scummvm/engines/glk/magnetic/emu.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "glk/magnetic/magnetic_defs.h"
#include "glk/magnetic/magnetic.h"
#include "common/file.h"
#include "common/textconsole.h"

namespace Glk {
namespace Magnetic {

const char *const no_hints = "[Hints are not available.]\n";
const char *const not_supported = "[This function is not supported.]\n";
const char *const undo_ok = "\n[Previous turn undone.]";
const char *const undo_fail = "\n[You can't \"undo\" what hasn't been done!]";

#define ms_fatal error

#if defined(LOGEMU) || defined(LOGGFX) || defined(LOGHNT)
FILE *dbg_log;
#ifndef LOG_FILE
#error LOG_FILE must be defined to be the name of the log file.
#endif
#endif

#ifdef LOGEMU
void out(char *format, ...) {
	va_list a;

	va_start(a, format);
	vfprintf(dbg_log, format, a);
	va_end(a);
}
#endif
#if defined(LOGGFX) || defined(LOGHNT)
void out2(char *format, ...) {
	va_list a;

	va_start(a, format);
	vfprintf(dbg_log, format, a);
	va_end(a);
	fflush(dbg_log);
}
#endif

/* Convert virtual pointer to effective pointer */
type8 *Magnetic::effective(type32 ptr) {
	if ((version < 4) && (mem_size == 0x10000))
		return &(code[ptr & 0xffff]);
	if (ptr >= mem_size) {
		ms_fatal("Outside memory experience");
		return code;
	}

	return &(code[ptr]);
}

void Magnetic::write_l(type8 *ptr, type32 val) {
	ptr[3] = (type8) val;
	val >>= 8;
	ptr[2] = (type8) val;
	val >>= 8;
	ptr[1] = (type8) val;
	val >>= 8;
	ptr[0] = (type8) val;
}

void Magnetic::write_w(type8 *ptr, type16 val) {
	ptr[1] = (type8) val;
	val >>= 8;
	ptr[0] = (type8) val;
}

type32 Magnetic::rand_emu() {
	rseed = 1103515245L * rseed + 12345L;
	return rseed & 0x7fffffffL;
}

void Magnetic::ms_freemem() {
	if (code)
		free(code);
	if (string)
		free(string);
	if (string2)
		free(string2);
	if (string3)
		free(string3);
	if (dict)
		free(dict);
	if (undo[0])
		free(undo[0]);
	if (undo[1])
		free(undo[1]);
	if (restart)
		free(restart);
	code = string = string2 = string3 = dict = undo[0] = undo[1] = restart = nullptr;
	if (gfx_data)
		free(gfx_data);
	if (gfx_buf)
		free(gfx_buf);
	if (gfx2_hdr)
		free(gfx2_hdr);
	if (gfx2_buf)
		free(gfx2_buf);
	delete gfx_fp;

	gfx_data = gfx_buf = gfx2_hdr = gfx2_buf = nullptr;
	gfx2_name = nullptr;
	gfx_fp = nullptr;
	gfx_ver = 0;
	gfxtable = table_dist = 0;
#ifndef NO_ANIMATION
	pos_table_size = 0;
	command_index = 0;
	anim_repeat = 0;
	pos_table_index = -1;
	pos_table_max = -1;
#endif
	lastchar = 0;
	if (hints)
		free(hints);
	if (hint_contents)
		free(hint_contents);
	hints = nullptr;
	hint_contents = nullptr;
	if (snd_hdr)
		free(snd_hdr);
	if (snd_buf)
		free(snd_buf);
	snd_hdr = nullptr;
	snd_hsize = 0;
	snd_buf = nullptr;
}

type8 Magnetic::init_gfx1(type8 *header) {
#ifdef SAVEMEM
	type32 i;
#endif

	if (!(gfx_buf = (type8 *)malloc(MAX_PICTURE_SIZE))) {
		delete gfx_fp;
		gfx_fp = nullptr;
		return 1;
	}
#ifdef SAVEMEM
	if (!(gfx_data = (type8 *)malloc(128))) {
#else
	size_t dataSize = read_l(header + 4) - 8;
	if (!(gfx_data = (type8 *)malloc(dataSize))) {
#endif
		free(gfx_buf);
		delete gfx_fp;
		gfx_buf = nullptr;
		gfx_fp = nullptr;
		return 1;
	}
#ifdef SAVEMEM
	if (!fp.read(gfx_data, 128, 1, gfx_fp)) {
#else
	if (gfx_fp->read(gfx_data, dataSize) != dataSize) {
#endif
		free(gfx_data);
		free(gfx_buf);
		delete gfx_fp;
		gfx_data = gfx_buf = nullptr;
		gfx_fp = nullptr;
		return 1;
	}

#ifdef SAVEMEM
	for (i = 0; i < 128; i += 4)
		if (!read_l(gfx_data + i))
			write_l(gfx_data + i, read_l(header + 4));
#else
	delete gfx_fp;
	gfx_fp = nullptr;
#endif

	gfx_ver = 1;
	return 2;
}

type8 Magnetic::init_gfx2(type8 *header) {
	if (!(gfx_buf = (type8 *)malloc(MAX_PICTURE_SIZE))) {
		delete gfx_fp;
		gfx_fp = nullptr;
		return 1;
	}

	gfx2_hsize = read_w(header + 4);
	if (!(gfx2_hdr = (type8 *)malloc(gfx2_hsize))) {
		free(gfx_buf);
		delete gfx_fp;
		gfx_buf = nullptr;
		gfx_fp = nullptr;
		return 1;
	}

	gfx_fp->seek(6);
	if (gfx_fp->read(gfx2_hdr, gfx2_hsize) != gfx2_hsize) {
		free(gfx_buf);
		free(gfx2_hdr);
		delete gfx_fp;
		gfx_buf = nullptr;
		gfx2_hdr = nullptr;
		gfx_fp = nullptr;
		return 1;
	}

	gfx_ver = 2;
	return 2;
}

type8 Magnetic::init_snd(type8 *header) {
	if (!(snd_buf = (type8 *)malloc(MAX_MUSIC_SIZE))) {
		delete snd_fp;
		snd_fp = nullptr;
		return 1;
	}

	snd_hsize = read_w(header + 4);
	if (!(snd_hdr = (type8 *)malloc(snd_hsize))) {
		free(snd_buf);
		delete snd_fp;
		snd_buf = nullptr;
		snd_fp = nullptr;
		return 1;
	}

	snd_fp->seek(6);
	if (snd_fp->read(snd_hdr, snd_hsize) != snd_hsize) {
		free(snd_buf);
		free(snd_hdr);
		delete snd_fp;
		snd_buf = nullptr;
		snd_hdr = nullptr;
		snd_fp = nullptr;
		return 1;
	}

	return 2;
}

type8 Magnetic::ms_init(const char *name, const char *gfxname, const char *hntname, const char *sndname) {
	Common::File fp;
	type8 header[42], header2[8], header3[4];
	type32 i, dict_size, string2_size, code_size, dec;

#if defined(LOGEMU) || defined(LOGGFX) || defined(LOGHNT)
	dbg_log = fopen(LOG_FILE, "wt");
#endif
	ms_stop();
	if (!name) {
		if (!restart)
			return 0;
		else {
			memcpy(code, restart, undo_size);
			undo_stat[0] = undo_stat[1] = 0;
			ms_showpic(0, 0);
		}
	} else {
		undo_stat[0] = undo_stat[1] = 0;

		if (!fp.open(name))
			return 0;
		if ((fp.read(header, 42) != 42) || (read_l(header) != 0x4d615363))
			return 0;
		if (read_l(header + 8) != 42)
			return 0;

		ms_freemem();
		version = header[13];
		code_size = read_l(header + 14);
		string_size = read_l(header + 18);
		string2_size = read_l(header + 22);
		dict_size = read_l(header + 26);
		undo_size = read_l(header + 34);
		undo_pc = read_l(header + 38);

		if ((version < 4) && (code_size < 65536))
			mem_size = 65536;
		else
			mem_size = code_size;

		/* Some C libraries don't like malloc(0), so make
		   sure that undo_size is always positive. */
		if (undo_size == 0)
			undo_size = 8;

		sd = (type8)((dict_size != 0L) ? 1 : 0); /* if (sd) => separate dict */

		if (!(code = (type8 *)malloc(mem_size)) || !(string2 = (type8 *)malloc(string2_size)) ||
		        !(restart = (type8 *)malloc(undo_size)) || (sd &&
		                !(dict = (type8 *)malloc(dict_size)))) {
			ms_freemem();
			fp.close();
			return 0;
		}
		if (string_size > MAX_STRING_SIZE) {
			if (!(string = (type8 *)malloc(MAX_STRING_SIZE)) ||
			        !(string3 = (type8 *)malloc(string_size - MAX_STRING_SIZE))) {
				ms_freemem();
				fp.close();
				return 0;
			}
		} else {
			if (!(string = (type8 *)malloc(string_size))) {
				ms_freemem();
				fp.close();
				return 0;
			}
		}
		if (!(undo[0] = (type8 *)malloc(undo_size)) || !(undo[1] = (type8 *)malloc(undo_size))) {
			ms_freemem();
			fp.close();
			return 0;
		}
		if (fp.read(code, code_size) != code_size) {
			ms_freemem();
			fp.close();
			return 0;
		}
		memcpy(restart, code, undo_size);   /* fast restarts */
		if (string_size > MAX_STRING_SIZE) {
			if (fp.read(string, MAX_STRING_SIZE) != MAX_STRING_SIZE) {
				ms_freemem();
				fp.close();
				return 0;
			}
			if (fp.read(string3, string_size - MAX_STRING_SIZE) != string_size - MAX_STRING_SIZE) {
				ms_freemem();
				fp.close();
				return 0;
			}
		} else {
			if (fp.read(string, string_size) != string_size) {
				ms_freemem();
				fp.close();
				return 0;
			}
		}
		if (fp.read(string2, string2_size) != string2_size) {
			ms_freemem();
			fp.close();
			return 0;
		}
		if (sd && fp.read(dict, dict_size) != dict_size)  {
			ms_freemem();
			fp.close();
			return 0;
		}
		dec = read_l(header + 30);
		if (dec >= string_size)
			decode_table = string2 + dec - string_size;
		else {
			if (dec >= MAX_STRING_SIZE)
				decode_table = string3 + dec - MAX_STRING_SIZE;
			else
				decode_table = string + dec;
		}
		fp.close();
	}

	for (i = 0; i < 8; i++)
		dreg[i] = areg[i] = 0;
	write_reg(8 + 7, 2, 0xfffe);    /* Stack-pointer, -2 due to MS-DOS segments */
	pc = 0;
	zflag = nflag = cflag = vflag = 0;
	i_count = 0;
	running = 1;

	if (!name)
		return (type8)(gfx_buf ? 2 : 1);    /* Restarted */

	if (version == 4) {
		/* Try loading a hint file */
		Common::File hnt_fp;
		if (hntname && hnt_fp.open(hntname)) {
			if ((hnt_fp.read(&header3, 4) == 4) && (read_l(header3) == 0x4D614874)) {
				type8 buf[8];
				type16 j, blkcnt, elcnt, ntype, elsize, conidx;

				/* Allocate memory for hints */
				hints = (ms_hint *)malloc(MAX_HINTS * sizeof(struct ms_hint));
				hint_contents = (type8 *)malloc(MAX_HCONTENTS);
				if ((hints != nullptr) && (hint_contents != nullptr)) {
					/* Read number of blocks */
					if (hnt_fp.read(&buf, 2) != 2 && !hnt_fp.eos())
						return 0;
					blkcnt = read_w2(buf);
#ifdef LOGHNT
					out2("Blocks: %d\n", blkcnt);
#endif
					conidx = 0;
					for (i = 0; i < blkcnt; i++) {
#ifdef LOGHNT
						out2("\nBlock No. %d\n", i);
#endif
						/* Read number of elements */
						if (hnt_fp.read(&buf, 2) != 2 && !hnt_fp.eos()) return 0;
						elcnt = read_w2(buf);
#ifdef LOGHNT
						out2("Elements: %d\n", elcnt);
#endif
						hints[i].elcount = elcnt;

						/* Read node type */
						if (hnt_fp.read(&buf, 2) != 2 && !hnt_fp.eos()) return 0;
						ntype = read_w2(buf);
#ifdef LOGHNT
						if (ntype == 1)
							out2("Type: Node\n");
						else
							out2("Type: Leaf\n");
#endif
						hints[i].nodetype = ntype;
						hints[i].content = (const char *)hint_contents + conidx;
#ifdef LOGHNT
						out2("Elements:\n");
#endif
						for (j = 0; j < elcnt; j++) {
							if (hnt_fp.read(&buf, 2) != 2 && !hnt_fp.eos()) return 0;
							elsize = read_w2(buf);
							if (hnt_fp.read(hint_contents + conidx, elsize) != elsize && !hnt_fp.eos()) return 0;
							hint_contents[conidx + elsize - 1] = '\0';
#ifdef LOGHNT
							out2("%s\n", hint_contents + conidx);
#endif
							conidx += elsize;
						}

						/* Do we need a jump table? */
						if (ntype == 1) {
#ifdef LOGHNT
							out2("Jump to block:\n");
#endif
							for (j = 0; j < elcnt; j++) {
								if (hnt_fp.read(&buf, 2) != 2 && !hnt_fp.eos()) return 0;
								hints[i].links[j] = read_w2(buf);
#ifdef LOGHNT
								out2("%d\n", hints[i].links[j]);
#endif
							}
						}

						/* Read the parent block */
						if (hnt_fp.read(&buf, 2) != 2 && !hnt_fp.eos()) return 0;
						hints[i].parent = read_w2(buf);
#ifdef LOGHNT
						out2("Parent: %d\n", hints[i].parent);
#endif
					}
				} else {
					if (hints)
						free(hints);
					if (hint_contents)
						free(hint_contents);
					hints = nullptr;
					hint_contents = nullptr;
				}
			}
			hnt_fp.close();
		}

		/* Try loading a music file */
		snd_fp = new Common::File();
		if (sndname && snd_fp->open(sndname)) {
			if (snd_fp->read(&header2, 8) != 8) {
				delete snd_fp;
				snd_fp = nullptr;
			} else {
				if (read_l(header2) == 0x4D615364) { /* MaSd */
					init_snd(header2);
#ifdef LOGSND
					out2("Sound file loaded.\n");
#endif
				}
			}
		} else {
			delete snd_fp;
			snd_fp = nullptr;
		}
	}

	if (!gfxname)
		return 1;

	gfx_fp = new Common::File();
	if (!gfx_fp->open(gfxname) || gfx_fp->read(&header2, 8) != 8) {
		delete gfx_fp;
		gfx_fp = nullptr;
		return 1;
	}

	if (version < 4 && read_l(header2) == 0x4D615069) /* MaPi */
		return init_gfx1(header2);
	else if (version == 4 && read_l(header2) == 0x4D615032) /* MaP2 */
		return init_gfx2(header2);
	delete gfx_fp;
	gfx_fp = nullptr;
	return 1;
}

type8 Magnetic::is_blank(type16 line, type16 width) {
	type32s i;

	for (i = line * width; i < (line + 1) * width; i++)
		if (gfx_buf[i])
			return 0;
	return 1;
}

type8 *Magnetic::ms_extract1(type8 pic, type16 *w, type16 *h, type16 *pal) {
	type8 *decodeTable, *data, bit, val, *buf;
	type16 tablesize, count;
	type32 i, j, upsize, offset;

	offset = read_l(gfx_data + 4 * pic);
#ifdef SAVEMEM
	type32 datasize;

	if (fseek(gfx_fp, offset, SEEK_SET) < 0)
		return 0;
	datasize = read_l(gfx_data + 4 * (pic + 1)) - offset;
	if (!(buf = (type8 *)malloc(datasize)))
		return 0;
	if (fp.read(buf, 1, datasize, gfx_fp) != datasize)
		return 0;
#else
	buf = gfx_data + offset - 8;
#endif

	for (i = 0; i < 16; i++)
		pal[i] = read_w(buf + 0x1c + 2 * i);
	w[0] = (type16)(read_w(buf + 4) - read_w(buf + 2));
	h[0] = read_w(buf + 6);

	tablesize = read_w(buf + 0x3c);
	//datasize = read_l(buf + 0x3e);
	decodeTable = buf + 0x42;
	data = decodeTable + tablesize * 2 + 2;
	upsize = h[0] * w[0];

	for (i = 0, j = 0, count = 0, val = 0, bit = 7; i < upsize; i++, count--) {
		if (!count) {
			count = tablesize;
			while (count < 0x80) {
				if (data[j] & (1 << bit))
					count = decodeTable[2 * count];
				else
					count = decodeTable[2 * count + 1];
				if (!bit)
					j++;
				bit = (type8)(bit ? bit - 1 : 7);
			}
			count &= 0x7f;
			if (count >= 0x10)
				count -= 0x10;
			else {
				val = (type8)count;
				count = 1;
			}
		}
		gfx_buf[i] = val;
	}
	for (j = w[0]; j < upsize; j++)
		gfx_buf[j] ^= gfx_buf[j - w[0]];

#ifdef SAVEMEM
	free(buf);
#endif
	for (; h[0] > 0 && is_blank((type16)(h[0] - 1), w[0]); h[0]--);
	for (i = 0; h[0] > 0 && is_blank((type16)i, w[0]); h[0]--, i++);
	return gfx_buf + i * w[0];
}

type16s Magnetic::find_name_in_header(const char *name, type8 upper) {
	type16s header_pos = 0;
	char pic_name[8];
	type8 i;

	for (i = 0; i < 8; i++)
		pic_name[i] = 0;
	strncpy(pic_name, name, 6);
	if (upper) {
		for (i = 0; i < 8; i++)
			pic_name[i] = (char)toupper(pic_name[i]);
	}

	while (header_pos < gfx2_hsize) {
		const char *hname = (const char *)(gfx2_hdr + header_pos);
		if (strncmp(hname, pic_name, 6) == 0)
			return header_pos;
		header_pos += 16;
	}
	return -1;
}

void Magnetic::extract_frame(struct picture *pic) {
	type32 i, x, y, bit_x, mask, ywb, yw, value, values[4];

	if (pic->width * pic->height > MAX_PICTURE_SIZE) {
		ms_fatal("picture too large");
		return;
	}

	for (y = 0; y < pic->height; y++) {
		ywb = y * pic->wbytes;
		yw = y * pic->width;

		for (x = 0; x < pic->width; x++) {
			if ((x % 8) == 0) {
				for (i = 0; i < 4; i++)
					values[i] = pic->data[ywb + (x / 8) + (pic->plane_step * i)];
			}

			bit_x = 7 - (x & 7);
			mask = 1 << bit_x;
			value = ((values[0] & mask) >> bit_x) << 0 |
			        ((values[1] & mask) >> bit_x) << 1 |
			        ((values[2] & mask) >> bit_x) << 2 |
			        ((values[3] & mask) >> bit_x) << 3;
			value &= 15;

			gfx_buf[yw + x] = (type8)value;
		}
	}
}

type8 *Magnetic::ms_extract2(const char *name, type16 *w, type16 *h, type16 *pal, type8 *is_anim) {
	struct picture main_pic;
	type32 offset = 0, length = 0, i;
	type16s header_pos = -1;
#ifndef NO_ANIMATION
	type8 *anim_data;
	type32 j;
#endif

	if (is_anim != nullptr)
		*is_anim = 0;
	gfx2_name = name;

#ifndef NO_ANIMATION
	pos_table_size = 0;
#endif

#ifdef NO_ANIMATION
	/* Find the uppercase (no animation) version of the picture first. */
	header_pos = find_name_in_header(name, 1);
#endif
	if (header_pos < 0)
		header_pos = find_name_in_header(name, 0);
	if (header_pos < 0)
		return nullptr;

	offset = read_l(gfx2_hdr + header_pos + 8);
	length = read_l(gfx2_hdr + header_pos + 12);

	if (offset != 0) {
		if (gfx2_buf) {
			free(gfx2_buf);
			gfx2_buf = nullptr;
		}

		gfx2_buf = (type8 *)malloc(length);
		if (!gfx2_buf)
			return nullptr;

		if (!gfx_fp->seek(offset)) {
			free(gfx2_buf);
			gfx2_buf = nullptr;
			return nullptr;
		}

		if (gfx_fp->read(gfx2_buf, length) != length) {
			free(gfx2_buf);
			gfx2_buf = nullptr;
			return nullptr;
		}

		for (i = 0; i < 16; i++)
			pal[i] = read_w2(gfx2_buf + 4 + (2 * i));

		main_pic.data = gfx2_buf + 48;
		main_pic.data_size = read_l2(gfx2_buf + 38);
		main_pic.width = read_w2(gfx2_buf + 42);
		main_pic.height = read_w2(gfx2_buf + 44);
		main_pic.wbytes = (type16)(main_pic.data_size / main_pic.height);
		main_pic.plane_step = (type16)(main_pic.wbytes / 4);
		main_pic.mask = (type8 *)nullptr;
		extract_frame(&main_pic);

		*w = main_pic.width;
		*h = main_pic.height;

#ifndef NO_ANIMATION
		/* Check for an animation */
		anim_data = gfx2_buf + 48 + main_pic.data_size;
		if ((anim_data[0] != 0xD0) || (anim_data[1] != 0x5E)) {
			type8 *current;
			type16 frame_count;
			type16 value1, value2;

			if (is_anim != nullptr)
				*is_anim = 1;

			current = anim_data + 6;
			frame_count = read_w2(anim_data + 2);
			if (frame_count > MAX_ANIMS) {
				ms_fatal("animation frame array too short");
				return nullptr;
			}

			/* Loop through each animation frame */
			for (i = 0; i < frame_count; i++) {
				anim_frame_table[i].data = current + 10;
				anim_frame_table[i].data_size = read_l2(current);
				anim_frame_table[i].width = read_w2(current + 4);
				anim_frame_table[i].height = read_w2(current + 6);
				anim_frame_table[i].wbytes = (type16)(anim_frame_table[i].data_size / anim_frame_table[i].height);
				anim_frame_table[i].plane_step = (type16)(anim_frame_table[i].wbytes / 4);
				anim_frame_table[i].mask = (type8 *)nullptr;

				current += anim_frame_table[i].data_size + 12;
				value1 = read_w2(current - 2);
				value2 = read_w2(current);

				/* Get the mask */
				if ((value1 == anim_frame_table[i].width) && (value2 == anim_frame_table[i].height)) {
					type16 skip;

					anim_frame_table[i].mask = (type8 *)(current + 4);
					skip = read_w2(current + 2);
					current += skip + 6;
				}
			}

			/* Get the positioning tables */
			pos_table_size = read_w2(current - 2);
			if (pos_table_size > MAX_POSITIONS) {
				ms_fatal("animation position array too short");
				return nullptr;
			}

#ifdef LOGGFX_EXT
			out2("POSITION TABLE DUMP\n");
#endif
			for (i = 0; i < pos_table_size; i++) {
				pos_table_count[i] = read_w2(current + 2);
				current += 4;

				if (pos_table_count[i] > MAX_ANIMS) {
					ms_fatal("animation position array too short");
					return nullptr;
				}

				for (j = 0; j < pos_table_count[i]; j++) {
					pos_table[i][j].x = read_w2(current);
					pos_table[i][j].y = read_w2(current + 2);
					pos_table[i][j].number = read_w2(current + 4) - 1;
					current += 8;
#ifdef LOGGFX_EXT
					out2("Position entry: Table: %d  Entry: %d  X: %d Y: %d Frame: %d\n",
					     i, j, pos_table[i][j].x, pos_table[i][j].y, pos_table[i][j].number);
#endif
				}
			}

			/* Get the command sequence table */
			//command_count = read_w2(current);
			command_table = current + 2;

			for (i = 0; i < MAX_POSITIONS; i++) {
				anim_table[i].flag = -1;
				anim_table[i].count = -1;
			}
			command_index = 0;
			anim_repeat = 0;
			pos_table_index = -1;
			pos_table_max = -1;
		}
#endif
		return gfx_buf;
	}
	return nullptr;
}

type8 *Magnetic::ms_extract(type32 pic, type16 *w, type16 *h, type16 *pal, type8 *is_anim) {
	if (is_anim)
		*is_anim = 0;

	if (gfx_buf) {
		switch (gfx_ver) {
		case 1:
			return ms_extract1((type8)pic, w, h, pal);
		case 2:
			return ms_extract2((const char *)(code + pic), w, h, pal, is_anim);
		default:
			break;
		}
	}
	return nullptr;
}

type8 Magnetic::ms_animate(struct ms_position **positions, type16 *count) {
#ifndef NO_ANIMATION
	type8 got_anim = 0;
	type16 i, j, ttable;

	if ((gfx_buf == nullptr) || (gfx2_buf == nullptr) || (gfx_ver != 2))
		return 0;
	if ((pos_table_size == 0) || (command_index < 0))
		return 0;

	*count = 0;
	*positions = (struct ms_position *)nullptr;

	while (got_anim == 0) {
		if (pos_table_max >= 0) {
			if (pos_table_index < pos_table_max) {
				for (i = 0; i < pos_table_size; i++) {
					if (anim_table[i].flag > -1) {
						if (*count >= MAX_FRAMES) {
							ms_fatal("returned animation array too short");
							return 0;
						}

						pos_array[*count] = pos_table[i][anim_table[i].flag];
#ifdef LOGGFX_EXT
						out2("Adding frame %d to buffer\n", pos_array[*count].number);
#endif
						(*count)++;

						if (anim_table[i].flag < (pos_table_count[i] - 1))
							anim_table[i].flag++;
						if (anim_table[i].count > 0)
							anim_table[i].count--;
						else
							anim_table[i].flag = -1;
					}
				}
				if (*count > 0) {
					*positions = pos_array;
					got_anim = 1;
				}
				pos_table_index++;
			}
		}

		if (got_anim == 0) {
			type8 command = command_table[command_index];
			command_index++;

			pos_table_max = -1;
			pos_table_index = -1;

			switch (command) {
			case 0x00:
				command_index = -1;
				return 0;
			case 0x01:
#ifdef LOGGFX_EXT
				out2("Load Frame Table: %d  Start at: %d  Count: %d\n",
				     command_table[command_index], command_table[command_index + 1],
				     command_table[command_index + 2]);
#endif
				ttable = command_table[command_index];
				command_index++;

				if (ttable - 1 >= MAX_POSITIONS) {
					ms_fatal("animation table too short");
					return 0;
				}

				anim_table[ttable - 1].flag = (type16s)(command_table[command_index] - 1);
				command_index++;
				anim_table[ttable - 1].count = (type16s)(command_table[command_index] - 1);
				command_index++;

				/* Workaround for Wonderland "catter" animation */
				if (v4_id == 0) {
					if (strcmp(gfx2_name, "catter") == 0) {
						if (command_index == 96)
							anim_table[ttable - 1].count = 9;
						if (command_index == 108)
							anim_table[ttable - 1].flag = -1;
						if (command_index == 156)
							anim_table[ttable - 1].flag = -1;
					}
				}
				break;
			case 0x02:
#ifdef LOGGFX_EXT
				out2("Animate: %d\n", command_table[command_index]);
#endif
				pos_table_max = command_table[command_index];
				pos_table_index = 0;
				command_index++;
				break;
			case 0x03:
#ifdef LOGGFX_EXT
				out2("Stop/Repeat Param: %d\n", command_table[command_index]);
				command_index = -1;
				return 0;
#else
				if (v4_id == 0) {
					command_index = -1;
					return 0;
				} else {
					command_index = 0;
					anim_repeat = 1;
					pos_table_index = -1;
					pos_table_max = -1;
					for (j = 0; j < MAX_POSITIONS; j++) {
						anim_table[j].flag = -1;
						anim_table[j].count = -1;
					}
				}
				break;
#endif
			case 0x04:
#ifdef LOGGFX_EXT
				out2("Unknown Command: %d Prop1: %d  Prop2: %d WARNING:not parsed\n", command,
				     command_table[command_index], command_table[command_index + 1]);
#endif
				command_index += 3;
				return 0;
			case 0x05:
				ttable = next_table;
				command_index++;

				anim_table[ttable - 1].flag = 0;
				anim_table[ttable - 1].count = command_table[command_index];

				pos_table_max = command_table[command_index];
				pos_table_index = 0;
				command_index++;
				command_index++;
				next_table++;
				break;
			default:
				ms_fatal("unknown animation command");
				command_index = -1;
				return 0;
			}
		}
	}
#ifdef LOGGFX_EXT
	out2("ms_animate() returning %d frames\n", *count);
#endif
	return got_anim;
#else
	return 0;
#endif
}

type8 *Magnetic::ms_get_anim_frame(type16s number, type16 *width, type16 *height, type8 **mask) {
#ifndef NO_ANIMATION
	if (number >= 0) {
		extract_frame(anim_frame_table + number);
		*width = anim_frame_table[number].width;
		*height = anim_frame_table[number].height;
		*mask = anim_frame_table[number].mask;
		return gfx_buf;
	}
#endif
	return nullptr;
}

type8 Magnetic::ms_anim_is_repeating() const {
#ifndef NO_ANIMATION
	return anim_repeat;
#else
	return 0;
#endif
}

type16s Magnetic::find_name_in_sndheader(const char *name) {
	type16s header_pos = 0;

	while (header_pos < snd_hsize) {
		const char *hname = (const char *)(snd_hdr + header_pos);
		if (strcmp(hname, name) == 0)
			return header_pos;
		header_pos += 18;
	}

	return -1;
}

type8 *Magnetic::sound_extract(const char *name, type32 *length, type16 *tempo) {
	type32 offset = 0;
	type16s header_pos = -1;

	if (header_pos < 0)
		header_pos = find_name_in_sndheader(name);
	if (header_pos < 0)
		return nullptr;

	*tempo = read_w(snd_hdr + header_pos + 8);
	offset = read_l(snd_hdr + header_pos + 10);
	*length = read_l(snd_hdr + header_pos + 14);

	if (offset != 0) {
		if (!snd_buf)
			return nullptr;
		if (!snd_fp->seek(offset) || snd_fp->read(snd_buf, *length) != *length)
			return nullptr;

		return snd_buf;
	}

	return nullptr;
}

void Magnetic::save_undo() {
	type8 *tmp, i;
	type32 tmp32;

	tmp = undo[0];  /* swap buffers */
	undo[0] = undo[1];
	undo[1] = tmp;

	for (i = 0; i < 18; i++) {
		tmp32 = undo_regs[0][i];
		undo_regs[0][i] = undo_regs[1][i];
		undo_regs[1][i] = tmp32;
	}

	memcpy(undo[1], code, undo_size);
	for (i = 0; i < 8; i++) {
		undo_regs[1][i] = dreg[i];
		undo_regs[1][8 + i] = areg[i];
	}
	undo_regs[1][16] = i_count;
	undo_regs[1][17] = pc;  /* status flags intentionally omitted */

	undo_stat[0] = undo_stat[1];
	undo_stat[1] = 1;
}

type8 Magnetic::ms_undo() {
	type8 i;

	ms_flush();
	if (!undo_stat[0])
		return 0;

	undo_stat[0] = undo_stat[1] = 0;
	memcpy(code, undo[0], undo_size);
	for (i = 0; i < 8; i++) {
		dreg[i] = undo_regs[0][i];
		areg[i] = undo_regs[0][8 + i];
	}
	i_count = undo_regs[0][16];
	pc = undo_regs[0][17];  /* status flags intentionally omitted */
	return 1;
}

#ifdef LOGEMU
void Magnetic::log_status() {
	int j;

	fprintf(dbg_log, "\nD0:");
	for (j = 0; j < 8; j++)
		fprintf(dbg_log, " %8.8x", read_reg(j, 3));
	fprintf(dbg_log, "\nA0:");
	for (j = 0; j < 8; j++)
		fprintf(dbg_log, " %8.8x", read_reg(8 + j, 3));
	fprintf(dbg_log, "\nPC=%5.5x (%8.8x) ZCNV=%d%d%d%d - %d instructions\n\n",
	        pc, code, zflag & 1, cflag & 1, nflag & 1, vflag & 1, i_count);
}
#endif

void Magnetic::ms_status() {
	int j;

	Common::String s = "D0:";
	for (j = 0; j < 8; j++)
		s += Common::String::format(" %8.8lx", (long) read_reg(j, 3));
	s += "\nA0:";

	for (j = 0; j < 8; j++)
		s += Common::String::format(" %8.8lx", (long) read_reg(8 + j, 3));
	s += Common::String::format("\nPC=%5.5lx ZCNV=%d%d%d%d - %ld instructions\n",
	                            (long) pc, zflag & 1, cflag & 1, nflag & 1, vflag & 1, (long) i_count);
	warning("%s", s.c_str());
}

type8 *Magnetic::reg_align(type8 *ptr, type8 size) {
	if (size == 1)
		ptr += 2;
	if (size == 0)
		ptr += 3;
	return ptr;
}

type32 Magnetic::read_reg(int i, int s) {
	type8 *ptr;

	if (i > 15) {
		ms_fatal("invalid register in read_reg");
		return 0;
	}
	if (i < 8)
		ptr = (type8 *) & dreg[i];
	else
		ptr = (type8 *) & areg[i - 8];

	switch (s) {
	case 0:
		return reg_align(ptr, 0)[0];
	case 1:
		return read_w(reg_align(ptr, 1));
	default:
		return read_l(ptr);
	}
}

void Magnetic::write_reg(int i, int s, type32 val) {
	type8 *ptr;

	if (i > 15) {
		ms_fatal("invalid register in write_reg");
		return;
	}
	if (i < 8)
		ptr = (type8 *) & dreg[i];
	else
		ptr = (type8 *) & areg[i - 8];

	switch (s) {
	case 0:
		reg_align(ptr, 0)[0] = (type8)val;
		break;
	case 1:
		write_w(reg_align(ptr, 1), (type16)val);
		break;
	default:
		write_l(ptr, val);
		break;
	}
}

void Magnetic::char_out(type8 c) {
	static type8 big = 0, period = 0, pipe = 0;

	if (c == 0xff) {
		big = 1;
		return;
	}
	c &= 0x7f;
	if (read_reg(3, 0)) {
		if (c == 0x5f || c == 0x40)
			c = 0x20;
		if ((c >= 'a') && (c <= 'z'))
			c &= 0xdf;
		if (version < 4)
			ms_statuschar(c);
		return;
	}
	if (c == 0x5e)
		c = 0x0a;
	if (c == 0x40) {
		if (read_reg(2, 0))
			return;
		else
			c = 0x73;
	}
	if (version < 3 && c == 0x7e) {
		lastchar = 0x7e;
		c = 0x0a;
	}
	if (((c > 0x40) && (c < 0x5b)) || ((c > 0x60) && (c < 0x7b))) {
		if (big) {
			c &= 0xdf;
			big = 0;
		}
		if (period)
			char_out(0x20);
	}
	period = 0;
	if (version < 4) {
		if ((c == 0x2e) || (c == 0x3f) || (c == 0x21) || (c == 0x0a))
			big = 1;
		else if (c == 0x22)
			big = 0;
	} else {
		if ((c == 0x20) && (lastchar == 0x0a))
			return;
		if ((c == 0x2e) || (c == 0x3f) || (c == 0x21) || (c == 0x0a))
			big = 1;
		else if (c == 0x22)
			big = 0;
	}
	if (((c == 0x20) || (c == 0x0a)) && (c == lastchar))
		return;
	if (version < 3) {
		if (pipe) {
			pipe = 0;
			return;
		}
		if (c == 0x7c) {
			pipe = 1;
			return;
		}
	} else {
		if (c == 0x7e) {
			c = 0x0a;
			if (lastchar != 0x0a)
				char_out(0x0a);
		}
	}
	lastchar = c;
	if (c == 0x5f)
		c = 0x20;
	if ((c == 0x2e) || (c == 0x2c) || (c == 0x3b) || (c == 0x3a) || (c == 0x21) || (c == 0x3f))
		period = 1;
	ms_putchar(c);
}

void Magnetic::set_info(type8 b) {
	regnr = (type8)(b & 0x07);
	admode = (type8)((b >> 3) & 0x07);
	opsize = (type8)(b >> 6);
}

void Magnetic::read_word() {
	type8 *epc;

	epc = effective(pc);
	byte1 = epc[0];
	byte2 = epc[1];
	pc += 2;
}

void Magnetic::set_arg1() {
	type8 tmp[2], l1c;

	is_reversible = 1;
	switch (admode) {
	case 0:
		arg1 = reg_align((type8 *) & dreg[regnr], opsize);  /* Dx */
		is_reversible = 0;
#ifdef LOGEMU
		out(" d%.1d", regnr);
#endif
		break;
	case 1:
		arg1 = reg_align((type8 *) & areg[regnr], opsize);  /* Ax */
		is_reversible = 0;
#ifdef LOGEMU
		out(" a%.1d", regnr);
#endif
		break;
	case 2:
		arg1i = read_reg(8 + regnr, 2);     /* (Ax) */
#ifdef LOGEMU
		out(" (a%.1d)", regnr);
#endif
		break;
	case 3:
		arg1i = read_reg(8 + regnr, 2);     /* (Ax)+ */
		write_reg(8 + regnr, 2, read_reg(8 + regnr, 2) + (1 << opsize));
#ifdef LOGEMU
		out(" (a%.1d)+", regnr);
#endif
		break;
	case 4:
		write_reg(8 + regnr, 2, read_reg(8 + regnr, 2) - (1 << opsize));
		arg1i = read_reg(8 + regnr, 2);     /* -(Ax) */
#ifdef LOGEMU
		out(" -(a%.1d)", regnr);
#endif
		break;
	case 5: {
		type16s i = (type16s) read_w(effective(pc));
		arg1i = read_reg(8 + regnr, 2) + i;
		pc += 2;    /* offset.w(Ax) */
#ifdef LOGEMU
		out(" %X(a%.1d)", i, regnr);
#endif
		}
		break;
	default:
		break;
	case 6:
		tmp[0] = byte1;
		tmp[1] = byte2;
		read_word();    /* offset.b(Ax, Dx/Ax) [1d1c] */
#ifdef LOGEMU
		out(" %.2X(a%.1d,", (int) byte2, regnr);
#endif
		arg1i = read_reg(regnr + 8, 2) + (type8s) byte2;
#ifdef LOGEMU
		if ((byte1 >> 4) > 8)
			out("a%.1d", (byte1 >> 4) - 8);
		else
			out("d%.1d", byte1 >> 4);
#endif
		if (byte1 & 0x08) {
#ifdef LOGEMU
			out(".l)");
#endif
			arg1i += (type32s) read_reg((byte1 >> 4), 2);
		} else {
#ifdef LOGEMU
			out(".w)");
#endif
			arg1i += (type16s) read_reg((byte1 >> 4), 1);
		}
		byte1 = tmp[0];
		byte2 = tmp[1];
		break;
	case 7:     /* specials */
		switch (regnr) {
		case 0:
			arg1i = read_w(effective(pc));  /* $xxxx.W */
			pc += 2;
#ifdef LOGEMU
			out(" %.4X.w", arg1i);
#endif
			break;
		case 1:
			arg1i = read_l(effective(pc));  /* $xxxx */
			pc += 4;
#ifdef LOGEMU
			out(" %.4X", arg1i);
#endif
			break;
		case 2:
			arg1i = (type16s) read_w(effective(pc)) + pc;   /* $xxxx(PC) */
			pc += 2;
#ifdef LOGEMU
			out(" %.4X(pc)", arg1i);
#endif
			break;
		case 3:
			l1c = effective(pc)[0];     /* $xx(PC,A/Dx) */
#ifdef LOGEMU
			out(" ???2", arg1i);
#endif
			if (l1c & 0x08)
				arg1i = pc + (type32s) read_reg((l1c >> 4), 2);
			else
				arg1i = pc + (type16s) read_reg((l1c >> 4), 1);
			l1c = effective(pc)[1];
			pc += 2;
			arg1i += (type8s) l1c;
			break;
		case 4:
			arg1i = pc; /* #$xxxx */
			if (opsize == 0)
				arg1i += 1;
			pc += 2;
			if (opsize == 2)
				pc += 2;
#ifdef LOGEMU
			out(" #%.4X", arg1i);
#endif
			break;
		default:
			break;
		}
		break;
	}
	if (is_reversible)
		arg1 = effective(arg1i);
}

void Magnetic::set_arg2_nosize(int use_dx, type8 b) {
	if (use_dx)
		arg2 = (type8 *) dreg;
	else
		arg2 = (type8 *) areg;
	arg2 += (b & 0x0e) << 1;
}

void Magnetic::set_arg2(int use_dx, type8 b) {
	set_arg2_nosize(use_dx, b);
	arg2 = reg_align(arg2, opsize);
}

void Magnetic::swap_args() {
	type8 *tmp;

	tmp = arg1;
	arg1 = arg2;
	arg2 = tmp;
}

void Magnetic::push(type32 c) {
	write_reg(15, 2, read_reg(15, 2) - 4);
	write_l(effective(read_reg(15, 2)), c);
}

type32 Magnetic::pop() {
	type32 c;

	c = read_l(effective(read_reg(15, 2)));
	write_reg(15, 2, read_reg(15, 2) + 4);
	return c;
}

void Magnetic::get_arg() {
#ifdef LOGEMU
	out(" %.4X", pc);
#endif
	set_info(byte2);
	arg2 = effective(pc);
	pc += 2;
	if (opsize == 2)
		pc += 2;
	if (opsize == 0)
		arg2 += 1;
	set_arg1();
}

void Magnetic::set_flags() {
	type16 i;
	type32 j;

	zflag = nflag = 0;
	switch (opsize) {
	case 0:
		if (arg1[0] > 127)
			nflag = 0xff;
		if (arg1[0] == 0)
			zflag = 0xff;
		break;
	case 1:
		i = read_w(arg1);
		if (i == 0)
			zflag = 0xff;
		if ((i >> 15) > 0)
			nflag = 0xff;
		break;
	case 2:
		j = read_l(arg1);
		if (j == 0)
			zflag = 0xff;
		if ((j >> 31) > 0)
			nflag = 0xff;
		break;
	default:
		break;
	}
}

int Magnetic::condition(type8 b) {
	switch (b & 0x0f) {
	case 0:
		return 0xff;
	case 1:
		return 0x00;
	case 2:
		return (zflag | cflag) ^ 0xff;
	case 3:
		return (zflag | cflag);
	case 4:
		return cflag ^ 0xff;
	case 5:
		return cflag;
	case 6:
		return zflag ^ 0xff;
	case 7:
		return zflag;
	case 8:
		return vflag ^ 0xff;
	case 9:
		return vflag;
	case 10:
	case 12:
		return nflag ^ 0xff;
	case 11:
	case 13:
		return nflag;
	case 14:
		return (zflag | nflag) ^ 0xff;
	case 15:
		return (zflag | nflag);
	default:
		break;
	}
	return 0x00;
}

void Magnetic::branch(type8 b) {
	if (b == 0)
		pc += (type16s) read_w(effective(pc));
	else
		pc += (type8s) b;
#ifdef LOGEMU
	out(" %.4X", pc);
#endif
}

void Magnetic::do_add(type8 adda) {
	if (adda) {
		if (opsize == 0)
			write_l(arg1, read_l(arg1) + (type8s) arg2[0]);
		if (opsize == 1)
			write_l(arg1, read_l(arg1) + (type16s) read_w(arg2));
		if (opsize == 2)
			write_l(arg1, read_l(arg1) + (type32s) read_l(arg2));
	} else {
		cflag = 0;
		if (opsize == 0) {
			arg1[0] += arg2[0];
			if (arg2[0] > arg1[0])
				cflag = 0xff;
		}
		if (opsize == 1) {
			write_w(arg1, (type16)(read_w(arg1) + read_w(arg2)));
			if (read_w(arg2) > read_w(arg1))
				cflag = 0xff;
		}
		if (opsize == 2) {
			write_l(arg1, read_l(arg1) + read_l(arg2));
			if (read_l(arg2) > read_l(arg1))
				cflag = 0xff;
		}
		if (version < 3 || !quick_flag) {
			/* Corruption onwards */
			vflag = 0;
			set_flags();
		}
	}
}

void Magnetic::do_sub(type8 suba) {
	if (suba) {
		if (opsize == 0)
			write_l(arg1, read_l(arg1) - (type8s) arg2[0]);
		if (opsize == 1)
			write_l(arg1, read_l(arg1) - (type16s) read_w(arg2));
		if (opsize == 2)
			write_l(arg1, read_l(arg1) - (type32s) read_l(arg2));
	} else {
		cflag = 0;
		if (opsize == 0) {
			if (arg2[0] > arg1[0])
				cflag = 0xff;
			arg1[0] -= arg2[0];
		}
		if (opsize == 1) {
			if (read_w(arg2) > read_w(arg1))
				cflag = 0xff;
			write_w(arg1, (type16)(read_w(arg1) - read_w(arg2)));
		}
		if (opsize == 2) {
			if (read_l(arg2) > read_l(arg1))
				cflag = 0xff;
			write_l(arg1, read_l(arg1) - read_l(arg2));
		}
		if (version < 3 || !quick_flag) {
			/* Corruption onwards */
			vflag = 0;
			set_flags();
		}
	}
}

void Magnetic::do_eor() {
	if (opsize == 0)
		arg1[0] ^= arg2[0];
	if (opsize == 1)
		write_w(arg1, (type16)(read_w(arg1) ^ read_w(arg2)));
	if (opsize == 2)
		write_l(arg1, read_l(arg1) ^ read_l(arg2));
	cflag = vflag = 0;
	set_flags();
}

void Magnetic::do_and() {
	if (opsize == 0)
		arg1[0] &= arg2[0];
	if (opsize == 1)
		write_w(arg1, (type16)(read_w(arg1) & read_w(arg2)));
	if (opsize == 2)
		write_l(arg1, read_l(arg1) & read_l(arg2));
	cflag = vflag = 0;
	set_flags();
}

void Magnetic::do_or() {
	if (opsize == 0)
		arg1[0] |= arg2[0];
	if (opsize == 1)
		write_w(arg1, (type16)(read_w(arg1) | read_w(arg2)));
	if (opsize == 2)
		write_l(arg1, read_l(arg1) | read_l(arg2));
	cflag = vflag = 0;
	set_flags();    /* [1c2b] */
}

void Magnetic::do_cmp() {
	type8 *tmp;

	tmp = arg1;
	tmparg[0] = arg1[0];
	tmparg[1] = arg1[1];
	tmparg[2] = arg1[2];
	tmparg[3] = arg1[3];
	arg1 = tmparg;
	quick_flag = 0;
	do_sub(0);
	arg1 = tmp;
}

void Magnetic::do_move() {

	if (opsize == 0)
		arg1[0] = arg2[0];
	if (opsize == 1)
		write_w(arg1, read_w(arg2));
	if (opsize == 2)
		write_l(arg1, read_l(arg2));
	if (version < 2 || admode != 1) {
		/* Jinxter: no flags if destination Ax */
		cflag = vflag = 0;
		set_flags();
	}
}

type8 Magnetic::do_btst(type8 a) {
	a &= admode ? 0x7 : 0x1f;
	while (admode == 0 && a >= 8) {
		a -= 8;
		arg1 -= 1;
	}
	zflag = 0;
	if ((arg1[0] & (1 << a)) == 0)
		zflag = 0xff;
	return a;
}

void Magnetic::do_bop(type8 b, type8 a) {
#ifdef LOGEMU
	out("bop (%.2x,%.2x) ", (int) b, (int) a);
#endif
	b = b & 0xc0;
	a = do_btst(a);
#ifdef LOGEMU
	if (b == 0x00)
		out("no bop???");
#endif
	if (b == 0x40) {
		arg1[0] ^= (1 << a);    /* bchg */
#ifdef LOGEMU
		out("bchg");
#endif
	}
	if (b == 0x80) {
		arg1[0] &= ((1 << a) ^ 0xff);   /* bclr */
#ifdef LOGEMU
		out("bclr");
#endif
	}
	if (b == 0xc0) {
		arg1[0] |= (1 << a);    /* bset */
#ifdef LOGEMU
		out("bset");
#endif
	}
}

void Magnetic::check_btst() {
#ifdef LOGEMU
	out("btst");
#endif
	set_info((type8)(byte2 & 0x3f));
	set_arg1();
	set_arg2(1, byte1);
	do_bop(byte2, arg2[0]);
}

void Magnetic::check_lea() {
#ifdef LOGEMU
	out("lea");
#endif
	if ((byte2 & 0xc0) == 0xc0) {
		set_info(byte2);
		opsize = 2;
		set_arg1();
		set_arg2(0, byte1);
		write_w(arg2, 0);
		if (is_reversible)
			write_l(arg2, arg1i);
		else
			ms_fatal("illegal addressing mode for LEA");
	} else {
		ms_fatal("unimplemented instruction CHK");
	}
}

void Magnetic::check_movem() {
	type8 l1c;

#ifdef LOGEMU
	out("movem");
#endif
	set_info((type8)(byte2 - 0x40));
	read_word();
	for (l1c = 0; l1c < 8; l1c++) {
		if (byte2 & 1 << l1c) {
			set_arg1();
			if (opsize == 2)
				write_l(arg1, read_reg(15 - l1c, 2));
			if (opsize == 1)
				write_w(arg1, (type16)read_reg(15 - l1c, 1));
		}
	}
	for (l1c = 0; l1c < 8; l1c++) {
		if (byte1 & 1 << l1c) {
			set_arg1();
			if (opsize == 2)
				write_l(arg1, read_reg(7 - l1c, 2));
			if (opsize == 1)
				write_w(arg1, (type16)read_reg(7 - l1c, 1));
		}
	}
}

void Magnetic::check_movem2() {
	type8 l1c;

#ifdef LOGEMU
	out("movem (2)");
#endif
	set_info((type8)(byte2 - 0x40));
	read_word();
	for (l1c = 0; l1c < 8; l1c++) {
		if (byte2 & 1 << l1c) {
			set_arg1();
			if (opsize == 2)
				write_reg(l1c, 2, read_l(arg1));
			if (opsize == 1)
				write_reg(l1c, 1, read_w(arg1));
		}
	}
	for (l1c = 0; l1c < 8; l1c++) {
		if (byte1 & 1 << l1c) {
			set_arg1();
			if (opsize == 2)
				write_reg(8 + l1c, 2, read_l(arg1));
			if (opsize == 1)
				write_reg(8 + l1c, 1, read_w(arg1));
		}
	}
}

void Magnetic::dict_lookup() {
	type16 dtab, doff, output, output_bak, bank, word, output2;
	type16 tmp16, i, obj_adj, adjlist, adjlist_bak;
	type8 c, c2, c3, flag, matchlen, longest, flag2;
	type8 restartFlag = 0, accept = 0;

	/*
	   dtab=A5.W                    ;dict_table offset <L22>
	   output=output_bak=A2.W       ;output <L24>
	   A5.W=A6.W                    ;input word
	   doff=A3.W                    ;lookup offset (doff) <L1C>
	   adjlist=A0.W ;adjlist <L1E>
	 */

	dtab = (type16)read_reg(8 + 5, 1);  /* used by version>0 */
	output = (type16)read_reg(8 + 2, 1);
	write_reg(8 + 5, 1, read_reg(8 + 6, 1));
	doff = (type16)read_reg(8 + 3, 1);
	adjlist = (type16)read_reg(8 + 0, 1);

	bank = (type16)read_reg(6, 0);  /* l2d */
	flag = 0;       /* l2c */
	word = 0;       /* l26 */
	matchlen = 0;       /* l2e */
	longest = 0;        /* 30e2 */
	write_reg(0, 1, 0); /* apostroph */

	while ((c = sd ? dict[doff] : effective(doff)[0]) != 0x81) {
		if (c >= 0x80) {
			if (c == 0x82) {
				flag = matchlen = 0;
				word = 0;
				write_reg(8 + 6, 1, read_reg(8 + 5, 1));
				bank++;
				doff++;
				continue;
			}
			c3 = c;
			c &= 0x5f;
			c2 = effective(read_reg(8 + 6, 1))[0] & 0x5f;
			if (c2 == c) {
				write_reg(8 + 6, 1, read_reg(8 + 6, 1) + 1);
				c = effective(read_reg(8 + 6, 1))[0];
				if ((!c) || (c == 0x20) || (c == 0x27) || (!version && (matchlen > 6))) {
					if (c == 0x27) {
						write_reg(8 + 6, 1, read_reg(8 + 6, 1) + 1);
						write_reg(0, 1, 0x200 + effective(read_reg(8 + 6, 1))[0]);
					}
					if ((version < 4) || (c3 != 0xa0))
						accept = 1;
				} else
					restartFlag = 1;
			} else if (!version && matchlen > 6 && !c2)
				accept = 1;
			else
				restartFlag = 1;
		} else {
			c &= 0x5f;
			c2 = effective(read_reg(8 + 6, 1))[0] & 0x5f;
			if ((c2 == c && c) || (version && !c2 && (c == 0x5f))) {
				if (version && !c2 && (c == 0x5f))
					flag = 0x80;
				matchlen++;
				write_reg(8 + 6, 1, read_reg(8 + 6, 1) + 1);
				doff++;
			} else if (!version && matchlen > 6 && !c2)
				accept = 1;
			else
				restartFlag = 1;
		}
		if (accept) {
			effective(read_reg(8 + 2, 1))[0] = (version) ? flag : 0;
			effective(read_reg(8 + 2, 1))[1] = (type8)bank;
			write_w(effective(read_reg(8 + 2, 1) + 2), word);
			write_reg(8 + 2, 1, read_reg(8 + 2, 1) + 4);
			if (matchlen >= longest)
				longest = matchlen;
			restartFlag = 1;
			accept = 0;
		}
		if (restartFlag) {
			write_reg(8 + 6, 1, read_reg(8 + 5, 1));
			flag = matchlen = 0;
			word++;
			if (sd)
				while (dict[doff++] < 0x80);
			else
				while (effective(doff++)[0] < 0x80);
			restartFlag = 0;
		}
	}
	write_w(effective(read_reg(8 + 2, 1)), 0xffff);

	if (version) {
		/* version > 0 */
		output_bak = output;    /* check synonyms */
		while ((c = effective(output)[1]) != 0xff) {
			if (c == 0x0b) {
				if (sd)
					tmp16 = read_w(&dict[dtab + read_w(effective(output + 2)) * 2]);
				else
					tmp16 = read_w(effective(dtab + read_w(effective(output + 2)) * 2));
				effective(output)[1] = tmp16 & 0x1f;
				write_w(effective(output + 2), (type16)(tmp16 >> 5));
			}
			output += 4;
		}
		output = output_bak;
	}

	/* l22 = output2,     l1e = adjlist, l20 = obj_adj, l26 = word, l2f = c2 */
	/* l1c = adjlist_bak, 333C = i,      l2d = bank,    l2c = flag, l30e3 = flag2 */

	write_reg(1, 1, 0); /* D1.W=0  [32B5] */
	flag2 = 0;
	output_bak = output;
	output2 = output;
	while ((bank = effective(output2)[1]) != 0xff) {
		obj_adj = (type16)read_reg(8 + 1, 1);   /* A1.W - obj_adj, ie. adjs for this word */
		write_reg(1, 0, 0); /* D1.B=0 */
		flag = effective(output2)[0];   /* flag */
		word = read_w(effective(output2 + 2));  /* wordnumber */
		output2 += 4;   /* next match */
		if ((read_w(effective(obj_adj))) && (bank == 6)) {
			/* Any adjectives? */
			if ((i = word) != 0) {
				/* Find list of valid adjs */
				do {
					while (effective(adjlist++)[0]);
				} while (--i > 0);
			}
			adjlist_bak = adjlist;
			do {
				adjlist = adjlist_bak;
				c2 = effective(obj_adj)[1]; /* given adjective */
				if ((tmp16 = read_w(effective(obj_adj))) != 0) {
					obj_adj += 2;
					while ((c = effective(adjlist++)[0]) && (c - 3 != c2));
					if (c - 3 != c2)
						write_reg(1, 0, 1); /* invalid adjective */
				}
			} while (tmp16 && !read_reg(1, 0));
			adjlist = (type16)read_reg(8 + 0, 1);
		}
		if (!read_reg(1, 0)) {
			/* invalid_flag */
			flag2 |= flag;
			effective(output)[0] = flag2;
			effective(output)[1] = (type8)bank;
			write_w(effective(output + 2), word);
			output += 4;
		}
	}
	write_reg(8 + 2, 1, output);
	output = output_bak;

	if (flag2 & 0x80) {
		tmp16 = output;
		output -= 4;
		do {
			output += 4;
			c = effective(output)[0];
		} while (!(c & 0x80));
		write_l(effective(tmp16), read_l(effective(output)) & 0x7fffffff);
		write_reg(8 + 2, 2, tmp16 + 4);
		if (longest > 1) {
			write_reg(8 + 5, 1, read_reg(8 + 5, 1) + longest - 2);
		}
	}
	write_reg(8 + 6, 1, read_reg(8 + 5, 1) + 1);
}

void Magnetic::do_findprop() {
	type16 tmp;

	if ((version > 2) && ((read_reg(0, 1) & 0x3fff) > fp_size)) {
		tmp = (type16)(((fp_size - (read_reg(0, 1) & 0x3fff)) ^ 0xffff) << 1);
		tmp += fp_tab;
		tmp = read_w(effective(tmp));
	} else {
		if (version < 2)
			write_reg(0, 2, read_reg(0, 2) & 0x7fff);
		else
			write_reg(0, 1, read_reg(0, 1) & 0x7fff);
		tmp = (type16)read_reg(0, 1);
	}
	tmp &= 0x3fff;
	write_reg(8 + 0, 2, tmp * 14 + properties);
}

void Magnetic::write_string() {
	static type32 offset_bak;
	static type8 mask_bak;
	type8 c, b, mask;
	type16 ptr;
	type32 offset;

	if (!cflag) {
		/* new string */
		ptr = (type16)read_reg(0, 1);
		if (!ptr)
			offset = 0;
		else {
			offset = read_w(&decode_table[0x100 + 2 * ptr]);
			if (read_w(&decode_table[0x100])) {
				if (ptr >= read_w(&decode_table[0x100]))
					offset += string_size;
			}
		}
		mask = 1;
	} else {
		offset = offset_bak;
		mask = mask_bak;
	}
	do {
		c = 0;
		while (c < 0x80) {
			if (offset >= string_size)
				b = string2[offset - string_size];
			else {
				if (offset >= MAX_STRING_SIZE)
					b = string3[offset - MAX_STRING_SIZE];
				else
					b = string[offset];
			}
			if (b & mask)
				c = decode_table[0x80 + c];
			else
				c = decode_table[c];
			mask <<= 1;
			if (!mask) {
				mask = 1;
				offset++;
			}
		}
		c &= 0x7f;
		if (c && ((c != 0x40) || (lastchar != 0x20)))
			char_out(c);
	} while (c && ((c != 0x40) || (lastchar != 0x20)));
	cflag = c ? 0xff : 0;
	if (c) {
		offset_bak = offset;
		mask_bak = mask;
	}
}

void Magnetic::output_number(type16 number) {
	type16 tens = number / 10;

	if (tens > 0)
		ms_putchar('0' + tens);
	number -= (tens * 10);
	ms_putchar('0' + number);
}

type16 Magnetic::output_text(const char *text) {
	type16 i;

	for (i = 0; text[i] != 0; i++)
		ms_putchar(text[i]);
	return i;
}

type16s Magnetic::hint_input() {
	type8 c1, c2, c3;

	output_text(">>");
	ms_flush();

	do {
		c1 = ms_getchar(0);
	} while (c1 == '\n');
	if (c1 == 1)
		return -1; /* New game loaded, abort hints */

	c2 = ms_getchar(0);
	if (c2 == 1)
		return -1;

	/* Get and discard any remaining characters */
	c3 = c2;
	while (c3 != '\n') {
		c3 = ms_getchar(0);
		if (c3 == 1)
			return -1;
	}
	ms_putchar('\n');

	if ((c1 >= '0') && (c1 <= '9')) {
		type16 number = c1 - '0';
		if ((c2 >= '0') && (c2 <= '9')) {
			number *= 10;
			number += c2 - '0';
		}
		return number;
	}

	if ((c1 >= 'A') && (c1 <= 'Z'))
		c1 = 'a' + (c1 - 'A');
	if ((c1 >= 'a') && (c1 <= 'z')) {
		switch (c1) {
		case 'e':
			return -2; /* End hints */
		case 'n':
			return -3; /* Next hint */
		case 'p':
			return -4; /* Show parent hint list */
		default:
			break;
		}
	}
	return 0;
}

type16 Magnetic::show_hints_text(ms_hint *hintsData, type16 index) {
	type16 i = 0, j = 0;
	type16s input;
	ms_hint *hint = hintsData + index;

	while (1) {
		switch (hint->nodetype) {

		case 1: /* folders */
			output_text("Hint categories:\n");
			for (i = 0, j = 0; i < hint->elcount; i++) {
				output_number(i + 1);
				output_text(". ");
				j += output_text(hint->content + j) + 1;
				ms_putchar('\n');
			}
			output_text("Enter hint category number, ");
			if (hint->parent != 0xffff)
				output_text("P for the parent hint menu, ");
			output_text("or E to end hintsData.\n");

			input = hint_input();
			switch (input) {
			case -1: /* A new game is being loaded */
				return 1;
			case -2: /* End hintsData */
				return 1;
			case -4: /* Show parent hint list */
				if (hint->parent != 0xffff)
					return 0;
				// fallthrough
			default:
				if ((input > 0) && (input <= hint->elcount)) {
					if (show_hints_text(hintsData, hint->links[input - 1]) == 1)
						return 1;
				}
				break;
			}
			break;

		case 2: /* hintsData */
			if (i < hint->elcount) {
				output_number(i + 1);
				output_text(". ");
				j += output_text(hint->content + j) + 1;

				if (i == hint->elcount - 1) {
					output_text("\nNo more hintsData.\n");
					return 0; /* Last hint */
				} else {
					output_text("\nEnter N for the next hint, ");
					output_text("P for the parent hint menu, ");
					output_text("or E to end hintsData.\n");
				}

				input = hint_input();
				switch (input) {
				case -1: /* A new game is being loaded */
					return 1;
				case -2: /* End hintsData */
					return 1;
				case -3:
					i++;
					break;
				case -4: /* Show parent hint list */
					return 0;
				default:
					break;
				}
			} else
				return 0;
			break;

		default:
			break;
		}
	}
	return 0;
}

void Magnetic::do_line_a() {
	type8 l1c;
	char *str;
	type16 ptr, ptr2, tmp16, dtype;
	type32 a1reg, tmp32;

#ifdef LOGGFX
	/*
	    if (((byte2-0xdd) == 4) || ((byte2-0xdd) == 13))
	        out2("--> %d\n",byte2-0xdd);
	    else
	        out2("LINE A %d\n",byte2-0xdd);
	 */
#endif
	if ((byte2 < 0xdd) || (version < 4 && byte2 < 0xe4) || (version < 2 && byte2 < 0xed)) {
		ms_flush(); /* flush output-buffer */
		rand_emu(); /* Increase game randomness */
		l1c = ms_getchar(1);    /* 0 means UNDO */
		if (l1c == 1)
			return;
		if (l1c)
			write_reg(1, 2, l1c);   /* d1=getkey() */
		else {
			if ((l1c = ms_undo()) != 0)
				output_text(undo_ok);
			else
				output_text(undo_fail);
			if (!l1c)
				write_reg(1, 2, '\n');
		}
	} else
		switch (byte2 - 0xdd) {

		case 0: /* A0DD - Won't probably be needed at all */
			break;

		case 1: /* A0DE */
			write_reg(1, 0, 1); /* Should remove the manual check */
			break;

		case 2: /* A0DF */
			a1reg = (type32)read_reg(9, 2);
			dtype = (code + a1reg + 2)[0];

			switch (dtype) {
			case 7: /* Picture */
#ifdef LOGGFX
				out2("PICTURE IS %s\n", code + a1reg + 3);
#endif
				/* gfx mode = normal, df is not called if graphics are off */
				ms_showpic(a1reg + 3, 2);
				break;

			case 10: /* Open window commands */
				switch ((code + a1reg + 3)[0]) {
				case 4: /* Help/Hints */
					if (hints != nullptr) {
						if (ms_showhints(hints) == 0)
							show_hints_text(hints, 0);
					} else
						output_text(no_hints);
					break;
				case 0: /* Carried items */
				case 1: /* Room items */
				case 2: /* Map */
				case 3: /* Compass */
					output_text(not_supported);
					break;
				default:
					break;
				}
				break;

			case 13: /* Music */
				switch ((code + a1reg + 3)[0]) {
				case 0: /* stop music */
					ms_playmusic(nullptr, 0, 0);
					break;
				default: /* play music */
#ifdef LOGSND
					out2("MUSIC IS %s\n", code + a1reg + 3);
#endif
					{
						type32 length = 0;
						type16 tempo = 0;
						type8 *midi = sound_extract((const char *)(code + a1reg + 3), &length, &tempo);
						if (midi != nullptr)
							ms_playmusic(midi, length, tempo);
					}
					break;
				}
				break;

			default:
				break;
			}
			break;

		case 3: /* A0E0 */
			/* printf("A0E0 stubbed\n"); */
			break;

		case 4: /* A0E1 Read from keyboard to (A1), status in D1 (0 for ok) */
			ms_flush();
			rand_emu();
			tmp32 = read_reg(8 + 1, 2);
			str = (char *)effective(tmp32);
			tmp16 = 0;
			do {
				if (!(l1c = ms_getchar(1))) {
					if (g_vm->shouldQuit())
						return;
					if ((l1c = ms_undo()) != 0)
						output_text(undo_ok);
					else
						output_text(undo_fail);
					if (!l1c) {
						tmp16 = 0;
						str[tmp16++] = '\n';
						l1c = '\n';
						output_text("\n>");
					} else {
						ms_putchar('\n');
						return;
					}
				} else {
					if (l1c == 1)
						return;
					str[tmp16++] = l1c;
#ifdef LOGGFX
					out2("%c", l1c);
#endif
				}
			} while (l1c != '\n' && tmp16 < 256);
			write_reg(8 + 1, 2, tmp32 + tmp16 - 1);
			if (tmp16 != 256 && tmp16 != 1)
				write_reg(1, 1, 0);
			else
				write_reg(1, 1, 1);
			break;

		case 5: /* A0E2 */
			/* printf("A0E2 stubbed\n"); */
			break;

		case 6: /* A0E3 */
			if (read_reg(1, 2) == 0) {
				if ((version < 4) || (read_reg(6, 2) == 0))
					ms_showpic(0, 0);
			}
			/* printf("\nMoves: %u\n",read_reg(0,1)); */
			break;

		case 7: /* A0E4 sp+=4, RTS */
			write_reg(8 + 7, 1, read_reg(8 + 7, 1) + 4);
			pc = pop();
			break;

		case 8: /* A0E5 set z, RTS */
		case 9: /* A0E6 clear z, RTS */
			pc = pop();
			zflag = (byte2 == 0xe5) ? 0xff : 0;
			break;

		case 10: /* A0E7 set z */
			zflag = 0xff;
			break;

		case 11: /* A0E8 clear z */
			zflag = 0;
			break;

		case 12: /* A0E9 [3083 - j] */
			ptr = (type16)read_reg(8 + 0, 1);
			ptr2 = (type16)read_reg(8 + 1, 1);
			do {
				l1c = dict[ptr2++];
				effective(ptr++)[0] = l1c;
			} while ((l1c & 0x80) == 0);
			write_reg(8 + 0, 1, ptr);
			write_reg(8 + 1, 1, ptr2);
			break;

		case 13: /* A0EA A1=write_dictword(A1,D1=output_mode) */
			ptr = (type16)read_reg(8 + 1, 1);
			tmp32 = read_reg(3, 0);
			write_reg(3, 0, read_reg(1, 0));
			do {
				l1c = dict[ptr++];
				char_out(l1c);
			} while (l1c < 0x80);
			write_reg(8 + 1, 1, ptr);
			write_reg(3, 0, tmp32);
			break;

		case 14: /* A0EB [3037 - j] */
			dict[read_reg(8 + 1, 1)] = (type8)read_reg(1, 0);
			break;

		case 15: /* A0EC */
			write_reg(1, 0, dict[read_reg(8 + 1, 1)]);
			break;

		case 16:
			ms_stop();  /* infinite loop A0ED */
			break;
		case 17:
			if (!ms_init(nullptr, nullptr, nullptr, nullptr))
				ms_stop();  /* restart game ie. pc, sp etc. A0EE */
			break;
		case 18:    /* printer A0EF */
			break;
		case 19:
			ms_showpic(read_reg(0, 0), (type8)read_reg(1, 0));  /* Do_picture(D0) A0F0 */
			break;
		case 20:
			ptr = (type16)read_reg(8 + 1, 1);   /* A1=nth_string(A1,D0) A0F1 */
			tmp32 = read_reg(0, 1);
			while (tmp32-- > 0) {
				while (effective(ptr++)[0]);
			}
			write_reg(8 + 1, 1, ptr);
			break;

		case 21: /* [2a43] A0F2 */
			cflag = 0;
			write_reg(0, 1, read_reg(2, 1));
			do_findprop();
			ptr = (type16)read_reg(8 + 0, 1);
			while (read_reg(2, 1) > 0) {
				if (read_w(effective(ptr + 12)) & 0x3fff) {
					cflag = 0xff;
					break;
				}
				if (read_reg(2, 1) == (read_reg(4, 1) & 0x7fff)) {
					cflag = 0xff;
					break;
				}
				ptr -= 0x0e;
				write_reg(2, 1, read_reg(2, 1) - 1);
			}
			break;

		case 22:
			char_out((type8)read_reg(1, 0));    /* A0F3 */
			break;

		case 23: /* D7=Save_(filename A0) D1 bytes starting from A1  A0F4 */
			str = (version < 4) ? (char *)effective(read_reg(8 + 0, 1)) : nullptr;
			write_reg(7, 0, ms_save_file(str, effective(read_reg(8 + 1, 1)),
			                             (type16)read_reg(1, 1)));
			break;

		case 24: /* D7=Load_(filename A0) D1 bytes starting from A1  A0F5 */
			str = (version < 4) ? (char *)effective(read_reg(8 + 0, 1)) : nullptr;
			write_reg(7, 0, ms_load_file(str, effective(read_reg(8 + 1, 1)),
			                             (type16)read_reg(1, 1)));
			break;

		case 25: /* D1=Random(0..D1-1) [3748] A0F6 */
			l1c = (type8)read_reg(1, 0);
			write_reg(1, 1, rand_emu() % (l1c ? l1c : 1));
			break;

		case 26: /* D0=Random(0..255) [3742] A0F7 */
			tmp16 = (type16)rand_emu();
			write_reg(0, 0, tmp16 + (tmp16 >> 8));
			break;

		case 27: /* write string [D0] [2999] A0F8 */
			write_string();
			break;

		case 28: /* Z,D0=Get_inventory_item(D0) [2a9e] A0F9 */
			zflag = 0;
			ptr = (type16)read_reg(0, 1);
			do {
				write_reg(0, 1, ptr);
				do {
					do_findprop();
					ptr2 = (type16)read_reg(8 + 0, 1);  /* object properties */
					if ((effective(ptr2)[5]) & 1)
						break;  /* is_described or so */
					l1c = effective(ptr2)[6];   /* some_flags */
					tmp16 = read_w(effective(ptr2 + 8));    /* parent_object */
					if (!l1c) {
						/* ordinary object? */
						if (!tmp16)
							zflag = 0xff;   /* return if parent()=player */
						break;  /* otherwise try next */
					}
					if (l1c & 0xcc)
						break;  /* skip worn, bodypart, room, hidden */
					if (tmp16 == 0) {
						/* return if parent()=player? */
						zflag = 0xff;
						break;
					}
					write_reg(0, 1, tmp16); /* else look at parent() */
				} while (1);
				ptr--;
			} while ((!zflag) && ptr);
			write_reg(0, 1, ptr + 1);
			break;

		case 29: /* [2b18] A0FA */
			ptr = (type16)read_reg(8, 1);
			do {
				if (read_reg(5, 0)) {
					l1c = ((type32)((read_w(effective(ptr)) & 0x3fff)) == read_reg(2, 1));
				} else {
					l1c = (effective(ptr)[0] == read_reg(2, 0));
				}
				if (read_reg(3, 1) == read_reg(4, 1)) {
					cflag = 0;
					write_reg(8, 1, ptr);
				} else {
					write_reg(3, 1, read_reg(3, 1) + 1);
					ptr += 0x0e;
					if (l1c) {
						cflag = 0xff;
						write_reg(8, 1, ptr);
					}
				}
			} while ((!l1c) && (read_reg(3, 1) != read_reg(4, 1)));
			break;

		case 30: /* [2bd1] A0FB */
			ptr = (type16)read_reg(8 + 1, 1);
			do {
				if (dict)
					while (dict[ptr++] < 0x80);
				else
					while (effective(ptr++)[0] < 0x80);
				write_reg(2, 1, read_reg(2, 1) - 1);
			} while (read_reg(2, 1));
			write_reg(8 + 1, 1, ptr);
			break;

		case 31: /* [2c3b] A0FC */
			ptr = (type16)read_reg(8 + 0, 1);
			ptr2 = (type16)read_reg(8 + 1, 1);
			do {
				if (dict)
					while (dict[ptr++] < 0x80);
				else
					while (effective(ptr++)[0] < 0x80);
				while (effective(ptr2++)[0]);
				write_reg(0, 1, read_reg(0, 1) - 1);
			} while (read_reg(0, 1));
			write_reg(8 + 0, 1, ptr);
			write_reg(8 + 1, 1, ptr2);
			break;

		case 32: /* Set properties pointer from A0 [2b7b] A0FD */
			properties = (type16)read_reg(8 + 0, 1);
			if (version > 0)
				fl_sub = (type16)read_reg(8 + 3, 1);
			if (version > 1) {
				fl_tab = (type16)read_reg(8 + 5, 1);
				fl_size = (type16)read_reg(7, 1) + 1;
				/* A3 [routine], A5 [table] and D7 [table-size] */
			}
			if (version > 2) {
				fp_tab = (type16)read_reg(8 + 6, 1);
				fp_size = (type16)read_reg(6, 1);
			}
			break;

		case 33: /* A0FE */
			do_findprop();
			break;

		case 34: /* Dictionary_lookup A0FF */
			dict_lookup();
			break;

		default:
			break;
		}
}

type8 Magnetic::ms_rungame() {
	type8 l1c;
	type16 ptr;
	type32 tmp32;
#ifdef LOGEMU
	static int stat = 0;
#endif

	if (!running)
		return running;
	if (pc == undo_pc)
		save_undo();

#ifdef LOGEMU
	if (pc == 0x0000)
		stat = 0;
	if (stat) {
		log_status();
		fflush(dbg_log);
	}

	fprintf(dbg_log, "%.8X: ", pc);
#endif
	i_count++;
	read_word();
	switch (byte1 >> 1) {

	/* 00-0F */
	case 0x00:
		if (byte1 == 0x00) {
			if (byte2 == 0x3c || byte2 == 0x7c) {
				/* OR immediate to CCR (30D9) */
				read_word();
#ifdef LOGEMU
				out("or_ccr #%.2x", byte2);
#endif
				if (byte2 & 0x01)
					cflag = 0xff;
				if (byte2 & 0x02)
					vflag = 0xff;
				if (byte2 & 0x04)
					zflag = 0xff;
				if (byte2 & 0x08)
					nflag = 0xff;
			} else {
				/* OR [27df] */
#ifdef LOGEMU
				out("or");
#endif
				get_arg();
				do_or();
			}
		} else
			check_btst();
		break;

	case 0x01:
		if (byte1 == 0x02) {
			if (byte2 == 0x3c || byte2 == 0x7c) {
				/* AND immediate to CCR */
				read_word();
#ifdef LOGEMU
				out("and_ccr #%.2x", byte2);
#endif
				if (!(byte2 & 0x01))
					cflag = 0;
				if (!(byte2 & 0x02))
					vflag = 0;
				if (!(byte2 & 0x04))
					zflag = 0;
				if (!(byte2 & 0x08))
					nflag = 0;
			} else {
				/* AND */
#ifdef LOGEMU
				out("and");
#endif
				get_arg();
				do_and();
			}
		} else
			check_btst();
		break;

	case 0x02:
		if (byte1 == 0x04) {
			/* SUB */
#ifdef LOGEMU
			out("sub");
#endif
			get_arg();
			do_sub(0);
		} else
			check_btst();
		break;

	case 0x03:
		if (byte1 == 0x06) {
			/* ADD */
#ifdef LOGEMU
			out("addi");
#endif
			get_arg();
			do_add(0);
		} else
			check_btst();
		break;

	case 0x04:
		if (byte1 == 0x08) {
			/* bit operations (immediate) */
			set_info((type8)(byte2 & 0x3f));
			l1c = (effective(pc))[1];
			pc += 2;
			set_arg1();
			do_bop(byte2, l1c);
		} else
			check_btst();
		break;

	case 0x05:
		if (byte1 == 0x0a) {
			if (byte2 == 0x3c || byte2 == 0x7c) {
				/* EOR immediate to CCR */
				read_word();
#ifdef LOGEMU
				out("eor_ccr #%.2X", byte2);
#endif
				if (byte2 & 0x01)
					cflag ^= 0xff;
				if (byte2 & 0x02)
					vflag ^= 0xff;
				if (byte2 & 0x04)
					zflag ^= 0xff;
				if (byte2 & 0x08)
					nflag ^= 0xff;
			} else {
				/* EOR */
#ifdef LOGEMU
				out("eor");
#endif
				get_arg();
				do_eor();
			}
		} else
			check_btst();
		break;

	case 0x06:
		if (byte1 == 0x0c) {
			/* CMP */
#ifdef LOGEMU
			out("cmp");
#endif
			get_arg();
			do_cmp();
		} else
			check_btst();
		break;

	case 0x07:
		check_btst();
		break;

	/* 10-1F [3327] MOVE.B */
	case 0x08:
	case 0x09:
	case 0x0a:
	case 0x0b:
	case 0x0c:
	case 0x0d:
	case 0x0e:
	case 0x0f:

#ifdef LOGEMU
		out("move.b");
#endif
		set_info((type8)(byte2 & 0x3f));
		set_arg1();
		swap_args();
		l1c = (byte1 >> 1 & 0x07) | (byte2 >> 3 & 0x18) | (byte1 << 5 & 0x20);
		set_info(l1c);
		set_arg1();
		do_move();
		break;

	/* 20-2F [32d1] MOVE.L */
	case 0x10:
	case 0x11:
	case 0x12:
	case 0x13:
	case 0x14:
	case 0x15:
	case 0x16:
	case 0x17:

#ifdef LOGEMU
		out("move.l");
#endif
		set_info((type8)((byte2 & 0x3f) | 0x80));
		set_arg1();
		swap_args();
		l1c = (byte1 >> 1 & 0x07) | (byte2 >> 3 & 0x18) | (byte1 << 5 & 0x20);
		set_info((type8)(l1c | 0x80));
		set_arg1();
		do_move();
		break;

	/* 30-3F [3327] MOVE.W */
	case 0x18:
	case 0x19:
	case 0x1a:
	case 0x1b:
	case 0x1c:
	case 0x1d:
	case 0x1e:
	case 0x1f:

#ifdef LOGEMU
		out("move.w");
#endif
		set_info((type8)((byte2 & 0x3f) | 0x40));
		set_arg1();
		swap_args();
		l1c = (byte1 >> 1 & 0x07) | (byte2 >> 3 & 0x18) | (byte1 << 5 & 0x20);
		set_info((type8)(l1c | 0x40));
		set_arg1();
		do_move();
		break;

	/* 40-4F various commands */

	case 0x20:
		if (byte1 == 0x40) {
			/* [31d5] */
			ms_fatal("unimplemented instructions NEGX and MOVE SR,xx");
		} else
			check_lea();
		break;

	case 0x21:
		if (byte1 == 0x42) {
			/* [3188] */
			if ((byte2 & 0xc0) == 0xc0) {
				ms_fatal("unimplemented instruction MOVE CCR,xx");
			} else {
				/* CLR */
#ifdef LOGEMU
				out("clr");
#endif
				set_info(byte2);
				set_arg1();
				if (opsize == 0)
					arg1[0] = 0;
				if (opsize == 1)
					write_w(arg1, 0);
				if (opsize == 2)
					write_l(arg1, 0);
				nflag = cflag = 0;
				zflag = 0xff;
			}
		} else
			check_lea();
		break;

	case 0x22:
		if (byte1 == 0x44) {
			/* [31a0] */
			if ((byte2 & 0xc0) == 0xc0) {
				/* MOVE to CCR */
#ifdef LOGEMU
				out("move_ccr");
#endif
				zflag = nflag = cflag = vflag = 0;
				set_info((type8)(byte2 & 0x7f));
				set_arg1();
				byte2 = arg1[1];
				if (byte2 & 0x01)
					cflag = 0xff;
				if (byte2 & 0x02)
					vflag = 0xff;
				if (byte2 & 0x04)
					zflag = 0xff;
				if (byte2 & 0x08)
					nflag = 0xff;
			} else {
#ifdef LOGEMU
				out("neg");
#endif
				set_info(byte2);    /* NEG */
				set_arg1();
				cflag = 0xff;
				if (opsize == 0) {
					arg1[0] = (-arg1[0]);
					cflag = arg1[0] ? 0xff : 0;
				}
				if (opsize == 1) {
					write_w(arg1, (type16)(-1 * read_w(arg1)));
					cflag = read_w(arg1) ? 0xff : 0;
				}
				if (opsize == 2) {
					write_l(arg1, -1 * read_l(arg1));
					cflag = read_l(arg1) ? 0xff : 0;
				}
				vflag = 0;
				set_flags();
			}
		} else
			check_lea();
		break;

	case 0x23:
		if (byte1 == 0x46) {
			if ((byte2 & 0xc0) == 0xc0) {
				ms_fatal("unimplemented instruction MOVE xx,SR");
			} else {
#ifdef LOGEMU
				out("not");
#endif
				set_info(byte2);    /* NOT */
				set_arg1();
				tmparg[0] = tmparg[1] = tmparg[2] = tmparg[3] = 0xff;
				arg2 = tmparg;
				do_eor();
			}
		} else
			check_lea();
		break;

	case 0x24:
		if (byte1 == 0x48) {
			if ((byte2 & 0xf8) == 0x40) {
#ifdef LOGEMU
				out("swap");
#endif
				opsize = 2; /* SWAP */
				admode = 0;
				regnr = byte2 & 0x07;
				set_arg1();
				tmp32 = read_w(arg1);
				write_w(arg1, read_w(arg1 + 2));
				write_w(arg1 + 2, (type16)tmp32);
				set_flags();
			} else if ((byte2 & 0xf8) == 0x80) {
#ifdef LOGEMU
				out("ext.w");
#endif
				opsize = 1; /* EXT.W */
				admode = 0;
				regnr = byte2 & 0x07;
				set_arg1();
				if (arg1[1] > 0x7f)
					arg1[0] = 0xff;
				else
					arg1[0] = 0;
				set_flags();
			} else if ((byte2 & 0xf8) == 0xc0) {
#ifdef LOGEMU
				out("ext.l");
#endif
				opsize = 2; /* EXT.L */
				admode = 0;
				regnr = byte2 & 0x07;
				set_arg1();
				if (read_w(arg1 + 2) > 0x7fff)
					write_w(arg1, 0xffff);
				else
					write_w(arg1, 0);
				set_flags();
			} else if ((byte2 & 0xc0) == 0x40) {
#ifdef LOGEMU
				out("pea");
#endif
				set_info((type8)((byte2 & 0x3f) | 0x80));   /* PEA */
				set_arg1();
				if (is_reversible)
					push(arg1i);
				else
					ms_fatal("illegal addressing mode for PEA");
			} else {
				check_movem();  /* MOVEM */
			}
		} else
			check_lea();
		break;

	case 0x25:
		if (byte1 == 0x4a) {
			/* [3219] TST */
			if ((byte2 & 0xc0) == 0xc0) {
				ms_fatal("unimplemented instruction TAS");
			} else {
#ifdef LOGEMU
				out("tst");
#endif
				set_info(byte2);
				set_arg1();
				cflag = vflag = 0;
				set_flags();
			}
		} else
			check_lea();
		break;

	case 0x26:
		if (byte1 == 0x4c)
			check_movem2();     /* [3350] MOVEM.L (Ax)+,A/Dx */
		else
			check_lea();    /* LEA */
		break;

	case 0x27:
		if (byte1 == 0x4e) {
			/* [3290] */
			if (byte2 == 0x75) {
				/* RTS */
#ifdef LOGEMU
				out("rts\n");
#endif
				pc = pop();
			} else if (byte2 == 0x71) {
				/* NOP */
#ifdef LOGEMU
				out("nop");
#endif
			} else if ((byte2 & 0xc0) == 0xc0) {
				/* indir JMP */
#ifdef LOGEMU
				out("jmp");
#endif
				set_info((type8)(byte2 | 0xc0));
				set_arg1();
				if (is_reversible)
					pc = arg1i;
				else
					ms_fatal("illegal addressing mode for JMP");
			} else if ((byte2 & 0xc0) == 0x80) {
#ifdef LOGEMU
				out("jsr");
#endif
				set_info((type8)(byte2 | 0xc0));        /* indir JSR */
				set_arg1();
				push(pc);
				if (is_reversible)
					pc = arg1i;
				else
					ms_fatal("illegal addressing mode for JSR");
			} else {
				ms_fatal("unimplemented instructions 0x4EXX");
			}
		} else
			check_lea();    /* LEA */
		break;

	/* 50-5F [2ed5] ADDQ/SUBQ/Scc/DBcc */
	case 0x28:
	case 0x29:
	case 0x2a:
	case 0x2b:
	case 0x2c:
	case 0x2d:
	case 0x2e:
	case 0x2f:

		if ((byte2 & 0xc0) == 0xc0) {
			set_info((type8)(byte2 & 0x3f));
			set_arg1();
			if (admode == 1) {
				/* DBcc */
#ifdef LOGEMU
				out("dbcc");
#endif
				if (condition(byte1) == 0) {
					arg1 = (arg1 - (type8 *) areg) + (type8 *) dreg - 1;
					write_w(arg1, (type16)(read_w(arg1) - 1));
					if (read_w(arg1) != 0xffff)
						branch(0);
					else
						pc += 2;
				} else
					pc += 2;
			} else {
				/* Scc */
#ifdef LOGEMU
				out("scc");
#endif
				arg1[0] = condition(byte1) ? 0xff : 0;
			}
		} else {
			set_info(byte2);
			set_arg1();
			quick_flag = (admode == 1) ? 0xff : 0;
			l1c = byte1 >> 1 & 0x07;
			tmparg[0] = tmparg[1] = tmparg[2] = 0;
			tmparg[3] = l1c ? l1c : 8;
			arg2 = reg_align(tmparg, opsize);
			{
#ifdef LOGEMU
				type32s outnum = 0;
				switch (opsize) {
				case 0:
					outnum = (type8s) arg2[0];
					break;
				case 1:
					outnum = (type16s) read_w(arg2);
					break;
				case 2:
					outnum = (type32s) read_l(arg2);
					break;
				}
#endif
				if ((byte1 & 0x01) == 1) {
#ifdef LOGEMU
					out("subq #%.8X", outnum);
#endif
					do_sub(0);  /* SUBQ */
				} else {
#ifdef LOGEMU
					out("addq #%.8X", outnum);
#endif
					do_add(0);  /* ADDQ */
				}
			}
		}
		break;

	/* 60-6F [26ba] Bcc */

	case 0x30:
		if (byte1 == 0x61) {
			/* BRA, BSR */
#ifdef LOGEMU
			out("bsr");
#endif
			if (byte2 == 0)
				push(pc + 2);
			else
				push(pc);
		}
#ifdef LOGEMU
		else
			out("bra");
#endif
		if ((byte1 == 0x60) && (byte2 == 0xfe)) {
			ms_flush(); /* flush stdout */
			ms_stop();  /* infinite loop - just exit */
		}
		branch(byte2);
		break;

	case 0x31:
	case 0x32:
	case 0x33:
	case 0x34:
	case 0x35:
	case 0x36:
	case 0x37:

		if (condition(byte1) == 0) {
#ifdef LOGEMU
			out("beq.s");
#endif
			if (byte2 == 0)
				pc += 2;
		} else {
#ifdef LOGEMU
			out("bra");
#endif
			branch(byte2);
		}
		break;

	/* 70-7F [260a] MOVEQ */
	case 0x38:
	case 0x39:
	case 0x3a:
	case 0x3b:
	case 0x3c:
	case 0x3d:
	case 0x3e:
	case 0x3f:

#ifdef LOGEMU
		out("moveq");
#endif
		arg1 = (type8 *) & dreg[byte1 >> 1 & 0x07];
		if (byte2 > 127)
			nflag = arg1[0] = arg1[1] = arg1[2] = 0xff;
		else
			nflag = arg1[0] = arg1[1] = arg1[2] = 0;
		arg1[3] = byte2;
		zflag = byte2 ? 0 : 0xff;
		break;

	/* 80-8F [2f36] */
	case 0x40:
	case 0x41:
	case 0x42:
	case 0x43:
	case 0x44:
	case 0x45:
	case 0x46:
	case 0x47:

		if ((byte2 & 0xc0) == 0xc0) {
			ms_fatal("unimplemented instructions DIVS and DIVU");
		} else if (((byte2 & 0xf0) == 0) && ((byte1 & 0x01) != 0)) {
			ms_fatal("unimplemented instruction SBCD");
		} else {
#ifdef LOGEMU
			out("or?");
#endif
			set_info(byte2);
			set_arg1();
			set_arg2(1, byte1);
			if ((byte1 & 0x01) == 0)
				swap_args();
			do_or();
		}
		break;

	/* 90-9F [3005] SUB */
	case 0x48:
	case 0x49:
	case 0x4a:
	case 0x4b:
	case 0x4c:
	case 0x4d:
	case 0x4e:
	case 0x4f:

#ifdef LOGEMU
		out("sub");
#endif
		quick_flag = 0;
		if ((byte2 & 0xc0) == 0xc0) {
			if ((byte1 & 0x01) == 1)
				set_info((type8)(byte2 & 0xbf));
			else
				set_info((type8)(byte2 & 0x7f));
			set_arg1();
			set_arg2_nosize(0, byte1);
			swap_args();
			do_sub(1);
		} else {
			set_info(byte2);
			set_arg1();
			set_arg2(1, byte1);
			if ((byte1 & 0x01) == 0)
				swap_args();
			do_sub(0);
		}
		break;

	/* A0-AF various special commands [LINE_A] */

	case 0x50:
	case 0x56:
	case 0x57:        /* [2521] */
		do_line_a();
#ifdef LOGEMU
		out("LINE_A A0%.2X", byte2);
#endif
		break;

	case 0x51:
#ifdef LOGEMU
		out("rts\n");
#endif
		pc = pop(); /* RTS */
		break;

	case 0x52:
#ifdef LOGEMU
		out("bsr");
#endif
		if (byte2 == 0)
			push(pc + 2);   /* BSR */
		else
			push(pc);
		branch(byte2);
		break;

	case 0x53:
		if ((byte2 & 0xc0) == 0xc0) {
			/* TST [321d] */
			ms_fatal("unimplemented instructions LINE_A #$6C0-#$6FF");
		} else {
#ifdef LOGEMU
			out("tst");
#endif
			set_info(byte2);
			set_arg1();
			cflag = vflag = 0;
			set_flags();
		}
		break;

	case 0x54:
		check_movem();
		break;

	case 0x55:
		check_movem2();
		break;

	/* B0-BF [2fe4] */
	case 0x58:
	case 0x59:
	case 0x5a:
	case 0x5b:
	case 0x5c:
	case 0x5d:
	case 0x5e:
	case 0x5f:

		if ((byte2 & 0xc0) == 0xc0) {
#ifdef LOGEMU
			out("cmp");
#endif
			if ((byte1 & 0x01) == 1)
				set_info((type8)(byte2 & 0xbf));
			else
				set_info((type8)(byte2 & 0x7f));
			set_arg1();
			set_arg2(0, byte1);
			swap_args();
			do_cmp();   /* CMP */
		} else {
			if ((byte1 & 0x01) == 0) {
#ifdef LOGEMU
				out("cmp");
#endif
				set_info(byte2);
				set_arg1();
				set_arg2(1, byte1);
				swap_args();
				do_cmp();   /* CMP */
			} else {
#ifdef LOGEMU
				out("eor");
#endif
				set_info(byte2);
				set_arg1();
				set_arg2(1, byte1);
				do_eor();   /* EOR */
			}
		}
		break;

	/* C0-CF [2f52] EXG, AND */
	case 0x60:
	case 0x61:
	case 0x62:
	case 0x63:
	case 0x64:
	case 0x65:
	case 0x66:
	case 0x67:

		if ((byte1 & 0x01) == 0) {
			if ((byte2 & 0xc0) == 0xc0) {
				ms_fatal("unimplemented instruction MULU");
			} else {
				/* AND */
#ifdef LOGEMU
				out("and");
#endif
				set_info(byte2);
				set_arg1();
				set_arg2(1, byte1);
				if ((byte1 & 0x01) == 0)
					swap_args();
				do_and();
			}
		} else {
			if ((byte2 & 0xf8) == 0x40) {
#ifdef LOGEMU
				out("exg (dx)");
#endif
				opsize = 2; /* EXG Dx,Dx */
				set_arg2(1, (type8)(byte2 << 1));
				swap_args();
				set_arg2(1, byte1);
				tmp32 = read_l(arg1);
				write_l(arg1, read_l(arg2));
				write_l(arg2, tmp32);
			} else if ((byte2 & 0xf8) == 0x48) {
				opsize = 2; /* EXG Ax,Ax */
#ifdef LOGEMU
				out("exg (ax)");
#endif
				set_arg2(0, (type8)(byte2 << 1));
				swap_args();
				set_arg2(0, byte1);
				tmp32 = read_l(arg1);
				write_l(arg1, read_l(arg2));
				write_l(arg2, tmp32);
			} else if ((byte2 & 0xf8) == 0x88) {
				opsize = 2; /* EXG Dx,Ax */
#ifdef LOGEMU
				out("exg (dx,ax)");
#endif
				set_arg2(0, (type8)(byte2 << 1));
				swap_args();
				set_arg2(1, byte1);
				tmp32 = read_l(arg1);
				write_l(arg1, read_l(arg2));
				write_l(arg2, tmp32);
			} else {
				if ((byte2 & 0xc0) == 0xc0) {
					ms_fatal("unimplemented instruction MULS");
				} else {
					set_info(byte2);
					set_arg1();
					set_arg2(1, byte1);
					if ((byte1 & 0x01) == 0)
						swap_args();
					do_and();
				}
			}
		}
		break;

	/* D0-DF [2fc8] ADD */
	case 0x68:
	case 0x69:
	case 0x6a:
	case 0x6b:
	case 0x6c:
	case 0x6d:
	case 0x6e:
	case 0x6f:

#ifdef LOGEMU
		out("add");
#endif
		quick_flag = 0;
		if ((byte2 & 0xc0) == 0xc0) {
			if ((byte1 & 0x01) == 1)
				set_info((type8)(byte2 & 0xbf));
			else
				set_info((type8)(byte2 & 0x7f));
			set_arg1();
			set_arg2_nosize(0, byte1);
			swap_args();
			do_add(1);
		} else {
			set_info(byte2);
			set_arg1();
			set_arg2(1, byte1);
			if ((byte1 & 0x01) == 0)
				swap_args();
			do_add(0);
		}
		break;

	/* E0-EF [3479] LSR ASL ROR ROL */
	case 0x70:
	case 0x71:
	case 0x72:
	case 0x73:
	case 0x74:
	case 0x75:
	case 0x76:
	case 0x77:

#ifdef LOGEMU
		out("lsr,asl,ror,rol");
#endif
		if ((byte2 & 0xc0) == 0xc0) {
			set_info((type8)(byte2 & 0xbf));        /* OP Dx */
			set_arg1();
			l1c = 1;    /* steps=1 */
			byte2 = (byte1 >> 1) & 0x03;
		} else {
			set_info((type8)(byte2 & 0xc7));
			set_arg1();
			if ((byte2 & 0x20) == 0) {
				/* immediate */
				l1c = (byte1 >> 1) & 0x07;
				if (l1c == 0)
					l1c = 8;
			} else {
				l1c = (type8)read_reg(byte1 >> 1 & 0x07, 0);
			}
			byte2 = (byte2 >> 3) & 0x03;
		}
		if ((byte1 & 0x01) == 0) {
			/* right */
			while (l1c-- > 0) {
				if (opsize == 0) {
					cflag = arg1[0] & 0x01 ? 0xff : 0;
					arg1[0] >>= 1;
					if (cflag && (byte2 == 3))
						arg1[0] |= 0x80;
				}
				if (opsize == 1) {
					cflag = read_w(arg1) & 0x01 ? 0xff : 0;
					write_w(arg1, (type16)(read_w(arg1) >> 1));
					if (cflag && (byte2 == 3))
						write_w(arg1, (type16)(read_w(arg1) | ((type16) 1 << 15)));
				}
				if (opsize == 2) {
					cflag = read_l(arg1) & 0x01 ? 0xff : 0;
					write_l(arg1, read_l(arg1) >> 1);
					if (cflag && (byte2 == 3))
						write_l(arg1, read_l(arg1) | ((type32) 1 << 31));
				}
			}
		} else {
			/* left */
			while (l1c-- > 0) {
				if (opsize == 0) {
					cflag = arg1[0] & 0x80 ? 0xff : 0;  /* [3527] */
					arg1[0] <<= 1;
					if (cflag && (byte2 == 3))
						arg1[0] |= 0x01;
				}
				if (opsize == 1) {
					cflag = read_w(arg1) & ((type16) 1 << 15) ? 0xff : 0;
					write_w(arg1, (type16)(read_w(arg1) << 1));
					if (cflag && (byte2 == 3))
						write_w(arg1, (type16)(read_w(arg1) | 0x01));
				}
				if (opsize == 2) {
					cflag = read_l(arg1) & ((type32) 1 << 31) ? 0xff : 0;
					write_l(arg1, read_l(arg1) << 1);
					if (cflag && (byte2 == 3))
						write_l(arg1, read_l(arg1) | 0x01);
				}
			}
		}
		set_flags();
		break;

	/* F0-FF [24f3] LINE_F */
	case 0x78:
	case 0x79:
	case 0x7a:
	case 0x7b:
	case 0x7c:
	case 0x7d:
	case 0x7e:
	case 0x7f:

		if (version == 0) {
			/* hardcoded jump */
			char_out(l1c = (type8)read_reg(1, 0));
		} else if (version == 1) {
			/* single programmable shortcut */
			push(pc);
			pc = fl_sub;
		} else {
			/* programmable shortcuts from table */
#ifdef LOGEMU
			out("LINK: %.2X,%.2X", byte1, byte2);
#endif
			ptr = (byte1 & 7) << 8 | byte2;
			if (ptr >= fl_size) {
				if ((byte1 & 8) == 0)
					push(pc);
				ptr = byte1 << 8 | byte2 | 0x0800;
				ptr = fl_tab + 2 * (ptr ^ 0xffff);
				pc = (type32) ptr + (type16s) read_w(effective(ptr));
			} else {
				push(pc);
				pc = fl_sub;
			}
		}
		break;

	default:
		ms_fatal("Constants aren't and variables don't");
		break;
	}
#ifdef LOGEMU
	fprintf(dbg_log, "\n");
#endif
	return running;
}

} // End of namespace Magnetic
} // End of namespace Glk