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wine/dlls/krnl386.exe16/vga.c
Alexandre Julliard 26a42f8452 winedos: Merge all of winedos back into krnl386.
2010-01-05 16:25:34 +01:00

2002 lines
63 KiB
C
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/*
* VGA hardware emulation
*
* Copyright 1998 Ove Kåven (with some help from Marcus Meissner)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <string.h>
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "wincon.h"
#include "dosexe.h"
#include "vga.h"
#include "ddraw.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
static IDirectDraw *lpddraw = NULL;
static IDirectDrawSurface *lpddsurf;
static IDirectDrawPalette *lpddpal;
static DDSURFACEDESC sdesc;
static BOOL vga_retrace_vertical;
static BOOL vga_retrace_horizontal;
/*
* Size and location of VGA controller window to framebuffer.
*
* Note: We support only single window even though some
* controllers support two. This should not be changed unless
* there are programs that depend on having two windows.
*/
#define VGA_WINDOW_SIZE (64 * 1024)
#define VGA_WINDOW_START ((char *)0xa0000)
/*
* Size and location of CGA controller window to framebuffer.
*/
#define CGA_WINDOW_SIZE (32 * 1024)
#define CGA_WINDOW_START ((char *)0xb8000)
/*
* VGA controller memory is emulated using linear framebuffer.
* This frambuffer also acts as an interface
* between VGA controller emulation and DirectDraw.
*
* vga_fb_width: Display width in pixels. Can be modified when
* display mode is changed.
* vga_fb_height: Display height in pixels. Can be modified when
* display mode is changed.
* vga_fb_depth: Number of bits used to store single pixel color information.
* Each pixel uses (vga_fb_depth+7)/8 bytes because
* 1-16 color modes are mapped to 256 color mode.
* Can be modified when display mode is changed.
* vga_fb_pitch: How many bytes to add to pointer in order to move
* from one row to another. This is fixed in VGA modes,
* but can be modified in SVGA modes.
* vga_fb_offset: Offset added to framebuffer start address in order
* to find the display origin. Programs use this to do
* double buffering and to scroll display. The value can
* be modified in VGA and SVGA modes.
* vga_fb_size: How many bytes are allocated to framebuffer.
* VGA framebuffers are always larger than display size and
* SVGA framebuffers may also be.
* vga_fb_data: Pointer to framebuffer start.
* vga_fb_window: Offset of 64k window 0xa0000 in bytes from framebuffer start.
* This value is >= 0, if mode uses linear framebuffer and
* -1, if mode uses color planes. This value is fixed
* in all modes except 0x13 (256 color VGA) where
* 0 means normal mode and -1 means Mode-X (unchained mode).
*/
static int vga_fb_width;
static int vga_fb_height;
static int vga_fb_depth;
static int vga_fb_pitch;
static int vga_fb_offset;
static int vga_fb_size = 0;
static char *vga_fb_data = 0;
static int vga_fb_window = 0;
static int vga_fb_window_size;
static char *vga_fb_window_data;
static PALETTEENTRY *vga_fb_palette;
static unsigned vga_fb_palette_index;
static unsigned vga_fb_palette_size;
static BOOL vga_fb_bright;
static BOOL vga_fb_enabled;
/*
* VGA text mode data.
*
* vga_text_attr: Current active attribute.
* vga_text_old: Last data sent to console.
* This is used to optimize console updates.
* vga_text_width: Width of the text display in characters.
* vga_text_height: Height of the text display in characters.
* vga_text_x: Current cursor X-position. Starts from zero.
* vga_text_y: Current cursor Y-position. Starts from zero.
* vga_text_console: TRUE if stdout is console,
* FALSE if it is regular file.
*/
static BYTE vga_text_attr;
static char *vga_text_old = NULL;
static BYTE vga_text_width;
static BYTE vga_text_height;
static BYTE vga_text_x;
static BYTE vga_text_y;
static BOOL vga_text_console;
/*
* VGA controller ports 0x3c0, 0x3c4, 0x3ce and 0x3d4 are
* indexed registers. These ports are used to select VGA controller
* subregister that can be written to or read from using ports 0x3c1,
* 0x3c5, 0x3cf or 0x3d5. Selected subregister indexes are
* stored in variables vga_index_*.
*
* Port 0x3c0 is special because it is both index and
* data-write register. Flip-flop vga_address_3c0 tells whether
* the port acts currently as an address register. Reading from port
* 0x3da resets the flip-flop to address mode.
*/
static BYTE vga_index_3c0;
static BYTE vga_index_3c4;
static BYTE vga_index_3ce;
static BYTE vga_index_3d4;
static BOOL vga_address_3c0 = TRUE;
/*
* List of supported video modes.
*
* should be expanded to contain most or all information
* as required for SVGA VESA mode info block for VESA BIOS subsystem 1 (see _ModeInfoBlock)
* this will allow proper support for FIXME items in VGA/VESA mode configuration
*
* FIXME - verify and define support for VESA modes
* FIXME - add # bit planes, # video memory banks, & memory model
*/
static WORD VGA_CurrentMode;
static BOOL CGA_ColorComposite = FALSE; /* behave like composite monitor */
const VGA_MODE VGA_modelist[] =
{
/* Mode, ModeType, TextCols, TextRows, CharWidth, CharHeight, Width, Height, Depth, Colors, ScreenPages, Supported*/
/* VGA modes */
{0x0000, TEXT, 40, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 0 */
{0x0001, TEXT, 40, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 1 */
{0x0002, TEXT, 80, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 2 */
{0x0003, TEXT, 80, 25, 9, 16, 360, 400, 0, 16, 8, TRUE}, /* VGA/CGA text mode 3 */
{0x0004, GRAPHIC, 40, 25, 8, 8, 320, 200, 2, 4, 1, TRUE}, /* VGA/CGA graphics mode 4 */
{0x0005, GRAPHIC, 40, 25, 8, 8, 320, 200, 2, 4, 1, TRUE}, /* VGA/CGA graphics mode 5 */
{0x0006, GRAPHIC, 80, 25, 8, 8, 640, 200, 1, 2, 1, TRUE}, /* VGA/CGA graphics mode 6 */
{0x0007, TEXT, 80, 25, 9, 16, 720, 400, 0, 0, 8, FALSE}, /* VGA text mode 7 - FIXME bad default address */
{0x000d, GRAPHIC, 40, 25, 8, 8, 320, 200, 4, 16, 8, FALSE}, /* VGA graphics mode 13 */
{0x000e, GRAPHIC, 80, 25, 8, 8, 640, 200, 4, 16, 4, FALSE}, /* VGA graphics mode 14 */
{0x000f, GRAPHIC, 80, 25, 8, 14, 640, 350, 0, 0, 2, FALSE}, /* VGA graphics mode 15 */
{0x0010, GRAPHIC, 80, 25, 8, 14, 640, 350, 4, 16, 2, FALSE}, /* VGA graphics mode 16 */
{0x0012, GRAPHIC, 80, 30, 8, 16, 640, 480, 1, 2, 1, FALSE}, /* VGA graphics mode 17 */
{0x0012, GRAPHIC, 80, 30, 8, 16, 640, 480, 4, 16, 1, FALSE}, /* VGA graphics mode 18 */
{0x0013, GRAPHIC, 40, 25, 8, 8, 320, 200, 8, 256, 1, TRUE}, /* VGA graphics mode 19 */
/* VESA 7-bit modes */
{0x006a, GRAPHIC, 0, 0, 0, 0, 800, 600, 4, 16, 1, TRUE}, /* VESA graphics mode, same as 0x102 */
/* VESA 15-bit modes */
{0x0100, GRAPHIC, 0, 0, 0, 0, 640, 400, 8, 256, 1, TRUE}, /* VESA graphics mode */
{0x0101, GRAPHIC, 0, 0, 0, 0, 640, 480, 8, 256, 1, TRUE}, /* VESA graphics mode */
{0x0102, GRAPHIC, 0, 0, 0, 0, 800, 600, 4, 16, 1, TRUE}, /* VESA graphics mode */
{0x0103, GRAPHIC, 0, 0, 0, 0, 800, 600, 8, 256, 1, TRUE}, /* VESA graphics mode */
{0x0104, GRAPHIC, 0, 0, 0, 0, 1024, 768, 4, 16, 1, TRUE}, /* VESA graphics mode */
{0x0105, GRAPHIC, 0, 0, 0, 0, 1024, 768, 8, 256, 1, TRUE}, /* VESA graphics mode */
{0x0106, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 4, 16, 1, TRUE}, /* VESA graphics mode */
{0x0107, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 8, 256, 1, TRUE}, /* VESA graphics mode */
{0x0108, TEXT, 0, 0, 0, 0, 80, 60, 0, 0, 1, TRUE}, /* VESA text mode */
{0x0109, TEXT, 0, 0, 0, 0, 132, 25, 0, 0, 1, TRUE}, /* VESA text mode */
{0x010a, TEXT, 0, 0, 0, 0, 132, 43, 0, 0, 1, TRUE}, /* VESA text mode */
{0x010b, TEXT, 0, 0, 0, 0, 132, 50, 0, 0, 1, TRUE}, /* VESA text mode */
{0x010c, TEXT, 0, 0, 0, 0, 132, 60, 0, 0, 1, TRUE}, /* VESA text mode */
/* VESA 1.2 modes */
{0x010d, GRAPHIC, 0, 0, 0, 0, 320, 200, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
{0x010e, GRAPHIC, 0, 0, 0, 0, 320, 200, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
{0x010f, GRAPHIC, 0, 0, 0, 0, 320, 200, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
{0x0110, GRAPHIC, 0, 0, 0, 0, 640, 480, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
{0x0111, GRAPHIC, 0, 0, 0, 0, 640, 480, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
{0x0112, GRAPHIC, 0, 0, 0, 0, 640, 480, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
{0x0113, GRAPHIC, 0, 0, 0, 0, 800, 600, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
{0x0114, GRAPHIC, 0, 0, 0, 0, 800, 600, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
{0x0115, GRAPHIC, 0, 0, 0, 0, 800, 600, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
{0x0116, GRAPHIC, 0, 0, 0, 0, 1024, 768, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
{0x0117, GRAPHIC, 0, 0, 0, 0, 1024, 768, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
{0x0118, GRAPHIC, 0, 0, 0, 0, 1024, 768, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
{0x0119, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 15, 0, 1, TRUE}, /* VESA graphics mode, 32K colors */
{0x011a, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 16, 0, 1, TRUE}, /* VESA graphics mode, 64K colors */
{0x011b, GRAPHIC, 0, 0, 0, 0, 1280, 1024, 24, 0, 1, TRUE}, /* VESA graphics mode, 16.8 Million colors */
{0xffff, TEXT, 0, 0, 0, 0, 0, 0, 0, 0, 1, FALSE}
};
/*
* This mutex is used to protect VGA state during asynchronous
* screen updates (see VGA_Poll). It makes sure that VGA state changes
* are atomic and the user interface is protected from flicker and
* corruption.
*
* The mutex actually serializes VGA operations and the screen update.
* Which means that whenever VGA_Poll occurs, application stalls if it
* tries to modify VGA state. This is not how real VGA adapters work,
* but it makes timing and correctness issues much easier to deal with.
*/
static CRITICAL_SECTION vga_lock;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &vga_lock,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": vga_lock") }
};
static CRITICAL_SECTION vga_lock = { &critsect_debug, -1, 0, 0, 0, 0 };
static void CALLBACK VGA_Poll( LPVOID arg, DWORD low, DWORD high );
static HWND vga_hwnd = NULL;
/*
* CGA palette 1
*/
static PALETTEENTRY cga_palette1[] = {
{0x00, 0x00, 0x00}, /* 0 - Black */
{0x00, 0xAA, 0xAA}, /* 1 - Cyan */
{0xAA, 0x00, 0xAA}, /* 2 - Magenta */
{0xAA, 0xAA, 0xAA} /* 3 - White */
};
/*
* CGA palette 1 in the bright variant
* intensities, when signalled to do so
* in register 0x3d9
*/
static PALETTEENTRY cga_palette1_bright[] = {
{0x00, 0x00, 0x00}, /* 0 - Black */
{0x55, 0xFF, 0xFF}, /* 1 - Light cyan */
{0xFF, 0x55, 0xFF}, /* 2 - Light magenta */
{0xFF, 0xFF, 0xFF}, /* 3 - Bright White */
};
/*
* CGA palette 2
*/
static PALETTEENTRY cga_palette2[] = {
{0x00, 0x00, 0x00}, /* 0 - Black */
{0x00, 0xAA, 0x00}, /* 1 - Green */
{0xAA, 0x00, 0x00}, /* 2 - Red */
{0xAA, 0x55, 0x00} /* 3 - Brown */
};
/*
* CGA palette 2 in the bright variant
* intensities, when signalled to do so
* in register 0x3d9
*/
static PALETTEENTRY cga_palette2_bright[] = {
{0x00, 0x00, 0x00}, /* 0 - Black */
{0x55, 0xFF, 0x55}, /* 1 - Light green */
{0xFF, 0x55, 0x55}, /* 2 - Light red */
{0xFF, 0xFF, 0x55}, /* 3 - Yellow */
};
/*
* VGA Palette Registers, in actual 16 bit color
* port 3C0H - 6 bit rgbRGB format
*
* 16 color accesses will use these pointers and insert
* entries from the 64-color palette (mode 18) into the default
* palette. --Robert 'Admiral' Coeyman
*/
static char vga_16_palette[17]={
0x00, /* 0 - Black */
0x01, /* 1 - Blue */
0x02, /* 2 - Green */
0x03, /* 3 - Cyan */
0x04, /* 4 - Red */
0x05, /* 5 - Magenta */
0x14, /* 6 - Brown */
0x07, /* 7 - White (Light gray) */
0x38, /* 8 - Dark gray */
0x39, /* 9 - Light blue */
0x3a, /* A - Light green */
0x3b, /* B - Light cyan */
0x3c, /* C - Light red */
0x3d, /* D - Light magenta */
0x3e, /* E - Yellow */
0x3f, /* F - Bright White (White) */
0x00 /* Border Color */
};
/*
* Mode 19 Default Color Register Setting
* DAC palette registers, converted from actual 18 bit color to 24.
*/
static PALETTEENTRY vga_def_palette[256]={
/* red green blue */
/* 16 colors in IRGB values */
{0x00, 0x00, 0x00}, /* 0 (0) - Black */
{0x00, 0x00, 0xAA}, /* 1 (1) - Blue */
{0x00, 0xAA, 0x00}, /* 2 (2) - Green */
{0x00, 0xAA, 0xAA}, /* 3 (3) - Cyan */
{0xAA, 0x00, 0x00}, /* 4 (4) - Red */
{0xAA, 0x00, 0xAA}, /* 5 (5) - Magenta */
{0xAA, 0x55, 0x00}, /* 6 (6) - Brown */
{0xAA, 0xAA, 0xAA}, /* 7 (7) - White (Light gray) */
{0x55, 0x55, 0x55}, /* 8 (8) - Dark gray */
{0x55, 0x55, 0xFF}, /* 9 (9) - Light blue */
{0x55, 0xFF, 0x55}, /* 10 (A) - Light green */
{0x55, 0xFF, 0xFF}, /* 11 (B) - Light cyan */
{0xFF, 0x55, 0x55}, /* 12 (C) - Light red */
{0xFF, 0x55, 0xFF}, /* 13 (D) - Light magenta */
{0xFF, 0xFF, 0x55}, /* 14 (E) - Yellow */
{0xFF, 0xFF, 0xFF}, /* 15 (F) - Bright White (White) */
/* 16 shades of gray */
{0x00, 0x00, 0x00}, /* 16 (10) */
{0x10, 0x10, 0x10}, /* 17 (11) */
{0x20, 0x20, 0x20}, /* 18 (12) */
{0x35, 0x35, 0x35}, /* 19 (13) */
{0x45, 0x45, 0x45}, /* 20 (14) */
{0x55, 0x55, 0x55}, /* 21 (15) */
{0x65, 0x65, 0x65}, /* 22 (16) */
{0x75, 0x75, 0x75}, /* 23 (17) */
{0x8A, 0x8A, 0x8A}, /* 24 (18) */
{0x9A, 0x9A, 0x9A}, /* 25 (19) */
{0xAA, 0xAA, 0xAA}, /* 26 (1A) */
{0xBA, 0xBA, 0xBA}, /* 27 (1B) */
{0xCA, 0xCA, 0xCA}, /* 28 (1C) */
{0xDF, 0xDF, 0xDF}, /* 29 (1D) */
{0xEF, 0xEF, 0xEF}, /* 30 (1E) */
{0xFF, 0xFF, 0xFF}, /* 31 (1F) */
/* High Intensity group - 72 colors in 1/3 saturation groups (20H-37H high) */
{0x00, 0x00, 0xFF}, /* 32 (20) */
{0x41, 0x00, 0xFF}, /* 33 (21) */
{0x82, 0x00, 0xFF}, /* 34 (22) */
{0xBE, 0x00, 0xFF}, /* 35 (23) */
{0xFF, 0x00, 0xFF}, /* 36 (24) */
{0xFF, 0x00, 0xBE}, /* 37 (25) */
{0xFF, 0x00, 0x82}, /* 38 (26) */
{0xFF, 0x00, 0x41}, /* 39 (27) */
{0xFF, 0x00, 0x00}, /* 40 (28) */
{0xFF, 0x41, 0x00}, /* 41 (29) */
{0xFF, 0x82, 0x00}, /* 42 (2A) */
{0xFF, 0xBE, 0x00}, /* 43 (2B) */
{0xFF, 0xFF, 0x00}, /* 44 (2C) */
{0xBE, 0xFF, 0x00}, /* 45 (2D) */
{0x82, 0xFF, 0x00}, /* 46 (2E) */
{0x41, 0xFF, 0x00}, /* 47 (2F) */
{0x00, 0xFF, 0x00}, /* 48 (30) */
{0x00, 0xFF, 0x41}, /* 49 (31) */
{0x00, 0xFF, 0x82}, /* 50 (32) */
{0x00, 0xFF, 0xBE}, /* 51 (33) */
{0x00, 0xFF, 0xFF}, /* 52 (34) */
{0x00, 0xBE, 0xFF}, /* 53 (35) */
{0x00, 0x82, 0xFF}, /* 54 (36) */
{0x00, 0x41, 0xFF}, /* 55 (37) */
/* High Intensity group - 72 colors in 2/3 saturation groups (38H-4FH moderate) */
{0x82, 0x82, 0xFF}, /* 56 (38) */
{0x9E, 0x82, 0xFF}, /* 57 (39) */
{0xBE, 0x82, 0xFF}, /* 58 (3A) */
{0xDF, 0x82, 0xFF}, /* 59 (3B) */
{0xFF, 0x82, 0xFF}, /* 60 (3C) */
{0xFF, 0x82, 0xDF}, /* 61 (3D) */
{0xFF, 0x82, 0xBE}, /* 62 (3E) */
{0xFF, 0x82, 0x9E}, /* 63 (3F) */
{0xFF, 0x82, 0x82}, /* 64 (40) */
{0xFF, 0x9E, 0x82}, /* 65 (41) */
{0xFF, 0xBE, 0x82}, /* 66 (42) */
{0xFF, 0xDF, 0x82}, /* 67 (43) */
{0xFF, 0xFF, 0x82}, /* 68 (44) */
{0xDF, 0xFF, 0x82}, /* 69 (45) */
{0xBE, 0xFF, 0x82}, /* 70 (46) */
{0x9E, 0xFF, 0x82}, /* 71 (47) */
{0x82, 0xFF, 0x82}, /* 72 (48) */
{0x82, 0xFF, 0x9E}, /* 73 (49) */
{0x82, 0xFF, 0xBE}, /* 74 (4A) */
{0x82, 0xFF, 0xDF}, /* 75 (4B) */
{0x82, 0xFF, 0xFF}, /* 76 (4C) */
{0x82, 0xDF, 0xFF}, /* 77 (4D) */
{0x82, 0xBE, 0xFF}, /* 78 (4E) */
{0x82, 0x9E, 0xFF}, /* 79 (4F) */
/* High Intensity group - 72 colors in 3/3 saturation groups (50H-67H low) */
{0xBA, 0xBA, 0xFF}, /* 80 (50) */
{0xCA, 0xBA, 0xFF}, /* 81 (51) */
{0xDF, 0xBA, 0xFF}, /* 82 (52) */
{0xEF, 0xBA, 0xFF}, /* 83 (53) */
{0xFF, 0xBA, 0xFF}, /* 84 (54) */
{0xFF, 0xBA, 0xEF}, /* 85 (55) */
{0xFF, 0xBA, 0xDF}, /* 86 (56) */
{0xFF, 0xBA, 0xCA}, /* 87 (57) */
{0xFF, 0xBA, 0xBA}, /* 88 (58) */
{0xFF, 0xCA, 0xBA}, /* 89 (59) */
{0xFF, 0xDF, 0xBA}, /* 90 (5A) */
{0xFF, 0xEF, 0xBA}, /* 91 (5B) */
{0xFF, 0xFF, 0xBA}, /* 92 (5C) */
{0xEF, 0xFF, 0xBA}, /* 93 (5D) */
{0xDF, 0xFF, 0xBA}, /* 94 (5E) */
{0xCA, 0xFF, 0xBA}, /* 95 (5F) */
{0xBA, 0xFF, 0xBA}, /* 96 (60) */
{0xBA, 0xFF, 0xCA}, /* 97 (61) */
{0xBA, 0xFF, 0xDF}, /* 98 (62) */
{0xBA, 0xFF, 0xEF}, /* 99 (63) */
{0xBA, 0xFF, 0xFF}, /* 100 (64) */
{0xBA, 0xEF, 0xFF}, /* 101 (65) */
{0xBA, 0xDF, 0xFF}, /* 102 (66) */
{0xBA, 0xCA, 0xFF}, /* 103 (67) */
/* Medium Intensity group - 72 colors in 1/3 saturation groups (68H-7FH high) */
{0x00, 0x00, 0x71}, /* 104 (68) */
{0x1C, 0x00, 0x71}, /* 105 (69) */
{0x39, 0x00, 0x71}, /* 106 (6A) */
{0x55, 0x00, 0x71}, /* 107 (6B) */
{0x71, 0x00, 0x71}, /* 108 (6C) */
{0x71, 0x00, 0x55}, /* 109 (6D) */
{0x71, 0x00, 0x39}, /* 110 (6E) */
{0x71, 0x00, 0x1C}, /* 111 (6F) */
{0x71, 0x00, 0x00}, /* 112 (70) */
{0x71, 0x1C, 0x00}, /* 113 (71) */
{0x71, 0x39, 0x00}, /* 114 (72) */
{0x71, 0x55, 0x00}, /* 115 (73) */
{0x71, 0x71, 0x00}, /* 116 (74) */
{0x55, 0x71, 0x00}, /* 117 (75) */
{0x39, 0x71, 0x00}, /* 118 (76) */
{0x1C, 0x71, 0x00}, /* 119 (77) */
{0x00, 0x71, 0x00}, /* 120 (78) */
{0x00, 0x71, 0x1C}, /* 121 (79) */
{0x00, 0x71, 0x39}, /* 122 (7A) */
{0x00, 0x71, 0x55}, /* 123 (7B) */
{0x00, 0x71, 0x71}, /* 124 (7C) */
{0x00, 0x55, 0x71}, /* 125 (7D) */
{0x00, 0x39, 0x71}, /* 126 (7E) */
{0x00, 0x1C, 0x71}, /* 127 (7F) */
/* Medium Intensity group - 72 colors in 2/3 saturation groups (80H-97H moderate) */
{0x39, 0x39, 0x71}, /* 128 (80) */
{0x45, 0x39, 0x71}, /* 129 (81) */
{0x55, 0x39, 0x71}, /* 130 (82) */
{0x61, 0x39, 0x71}, /* 131 (83) */
{0x71, 0x39, 0x71}, /* 132 (84) */
{0x71, 0x39, 0x61}, /* 133 (85) */
{0x71, 0x39, 0x55}, /* 134 (86) */
{0x71, 0x39, 0x45}, /* 135 (87) */
{0x71, 0x39, 0x39}, /* 136 (88) */
{0x71, 0x45, 0x39}, /* 137 (89) */
{0x71, 0x55, 0x39}, /* 138 (8A) */
{0x71, 0x61, 0x39}, /* 139 (8B) */
{0x71, 0x71, 0x39}, /* 140 (8C) */
{0x61, 0x71, 0x39}, /* 141 (8D) */
{0x55, 0x71, 0x39}, /* 142 (8E) */
{0x45, 0x71, 0x39}, /* 143 (8F) */
{0x39, 0x71, 0x39}, /* 144 (90) */
{0x39, 0x71, 0x45}, /* 145 (91) */
{0x39, 0x71, 0x55}, /* 146 (92) */
{0x39, 0x71, 0x61}, /* 147 (93) */
{0x39, 0x71, 0x71}, /* 148 (94) */
{0x39, 0x61, 0x71}, /* 149 (95) */
{0x39, 0x55, 0x71}, /* 150 (96) */
{0x39, 0x45, 0x71}, /* 151 (97) */
/* Medium Intensity group - 72 colors in 3/3 saturation groups (98H-AFH low) */
{0x51, 0x51, 0x71}, /* 152 (98) */
{0x59, 0x51, 0x71}, /* 153 (99) */
{0x61, 0x51, 0x71}, /* 154 (9A) */
{0x69, 0x51, 0x71}, /* 155 (9B) */
{0x71, 0x51, 0x71}, /* 156 (9C) */
{0x71, 0x51, 0x69}, /* 157 (9D) */
{0x71, 0x51, 0x61}, /* 158 (9E) */
{0x71, 0x51, 0x59}, /* 159 (9F) */
{0x71, 0x51, 0x51}, /* 160 (A0) */
{0x71, 0x59, 0x51}, /* 161 (A1) */
{0x71, 0x61, 0x51}, /* 162 (A2) */
{0x71, 0x69, 0x51}, /* 163 (A3) */
{0x71, 0x71, 0x51}, /* 164 (A4) */
{0x69, 0x71, 0x51}, /* 165 (A5) */
{0x61, 0x71, 0x51}, /* 166 (A6) */
{0x59, 0x71, 0x51}, /* 167 (A7) */
{0x51, 0x71, 0x51}, /* 168 (A8) */
{0x51, 0x71, 0x59}, /* 169 (A9) */
{0x51, 0x71, 0x61}, /* 170 (AA) */
{0x51, 0x71, 0x69}, /* 171 (AB) */
{0x51, 0x71, 0x71}, /* 172 (AC) */
{0x51, 0x69, 0x71}, /* 173 (AD) */
{0x51, 0x61, 0x71}, /* 174 (AE) */
{0x51, 0x59, 0x71}, /* 175 (AF) */
/* Low Intensity group - 72 colors in 1/3 saturation groups (B0H-C7H high) */
{0x00, 0x00, 0x41}, /* 176 (B0) */
{0x10, 0x00, 0x41}, /* 177 (B1) */
{0x20, 0x00, 0x41}, /* 178 (B2) */
{0x31, 0x00, 0x41}, /* 179 (B3) */
{0x41, 0x00, 0x41}, /* 180 (B4) */
{0x41, 0x00, 0x31}, /* 181 (B5) */
{0x41, 0x00, 0x20}, /* 182 (B6) */
{0x41, 0x00, 0x10}, /* 183 (B7) */
{0x41, 0x00, 0x00}, /* 184 (B8) */
{0x41, 0x10, 0x00}, /* 185 (B9) */
{0x41, 0x20, 0x00}, /* 186 (BA) */
{0x41, 0x31, 0x00}, /* 187 (BB) */
{0x41, 0x41, 0x00}, /* 188 (BC) */
{0x31, 0x41, 0x00}, /* 189 (BD) */
{0x20, 0x41, 0x00}, /* 190 (BE) */
{0x10, 0x41, 0x00}, /* 191 (BF) */
{0x00, 0x41, 0x00}, /* 192 (C0) */
{0x00, 0x41, 0x10}, /* 193 (C1) */
{0x00, 0x41, 0x20}, /* 194 (C2) */
{0x00, 0x41, 0x31}, /* 195 (C3) */
{0x00, 0x41, 0x41}, /* 196 (C4) */
{0x00, 0x31, 0x41}, /* 197 (C5) */
{0x00, 0x20, 0x41}, /* 198 (C6) */
{0x00, 0x10, 0x41}, /* 199 (C7) */
/* Low Intensity group - 72 colors in 2/3 saturation groups (C8H-DFH moderate) */
{0x20, 0x20, 0x41}, /* 200 (C8) */
{0x28, 0x20, 0x41}, /* 201 (C9) */
{0x31, 0x20, 0x41}, /* 202 (CA) */
{0x39, 0x20, 0x41}, /* 203 (CB) */
{0x41, 0x20, 0x41}, /* 204 (CC) */
{0x41, 0x20, 0x39}, /* 205 (CD) */
{0x41, 0x20, 0x31}, /* 206 (CE) */
{0x41, 0x20, 0x28}, /* 207 (CF) */
{0x41, 0x20, 0x20}, /* 208 (D0) */
{0x41, 0x28, 0x20}, /* 209 (D1) */
{0x41, 0x31, 0x20}, /* 210 (D2) */
{0x41, 0x39, 0x20}, /* 211 (D3) */
{0x41, 0x41, 0x20}, /* 212 (D4) */
{0x39, 0x41, 0x20}, /* 213 (D5) */
{0x31, 0x41, 0x20}, /* 214 (D6) */
{0x28, 0x41, 0x20}, /* 215 (D7) */
{0x20, 0x41, 0x20}, /* 216 (D8) */
{0x20, 0x41, 0x28}, /* 217 (D9) */
{0x20, 0x41, 0x31}, /* 218 (DA) */
{0x20, 0x41, 0x39}, /* 219 (DB) */
{0x20, 0x41, 0x41}, /* 220 (DC) */
{0x20, 0x39, 0x41}, /* 221 (DD) */
{0x20, 0x31, 0x41}, /* 222 (DE) */
{0x20, 0x28, 0x41}, /* 223 (DF) */
/* Low Intensity group - 72 colors in 3/3 saturation groups (E0H-F7H low) */
{0x2D, 0x2D, 0x41}, /* 223 (E0) */
{0x31, 0x2D, 0x41}, /* 224 (E1) */
{0x35, 0x2D, 0x41}, /* 225 (E2) */
{0x3D, 0x2D, 0x41}, /* 226 (E3) */
{0x41, 0x2D, 0x41}, /* 227 (E4) */
{0x41, 0x2D, 0x3D}, /* 228 (E5) */
{0x41, 0x2D, 0x35}, /* 229 (E6) */
{0x41, 0x2D, 0x31}, /* 230 (E7) */
{0x41, 0x2D, 0x2D}, /* 231 (E8) */
{0x41, 0x31, 0x2D}, /* 232 (E9) */
{0x41, 0x35, 0x2D}, /* 233 (EA) */
{0x41, 0x3D, 0x2D}, /* 234 (EB) */
{0x41, 0x41, 0x2D}, /* 235 (EC) */
{0x3D, 0x41, 0x2D}, /* 236 (ED) */
{0x35, 0x41, 0x2D}, /* 237 (EE) */
{0x31, 0x41, 0x2D}, /* 238 (EF) */
{0x2D, 0x41, 0x2D}, /* 239 (F0) */
{0x2D, 0x41, 0x31}, /* 240 (F1) */
{0x2D, 0x41, 0x35}, /* 241 (F2) */
{0x2D, 0x41, 0x3D}, /* 242 (F3) */
{0x2D, 0x41, 0x41}, /* 243 (F4) */
{0x2D, 0x3D, 0x41}, /* 244 (F5) */
{0x2D, 0x35, 0x41}, /* 245 (F6) */
{0x2D, 0x31, 0x41}, /* 246 (F7) */
/* Fill up remainder of palettes with black */
{0,0,0}
};
/*
* Mode 18 Default Color Register Setting
* DAC palette registers, converted from actual 18 bit color to 24.
*
* This palette is the dos default, converted from 18 bit color to 24.
* It contains only 64 entries of colors--all others are zeros.
* --Robert 'Admiral' Coeyman
*/
static PALETTEENTRY vga_def64_palette[256]={
/* red green blue */
{0x00, 0x00, 0x00}, /* 0x00 Black */
{0x00, 0x00, 0xaa}, /* 0x01 Blue */
{0x00, 0xaa, 0x00}, /* 0x02 Green */
{0x00, 0xaa, 0xaa}, /* 0x03 Cyan */
{0xaa, 0x00, 0x00}, /* 0x04 Red */
{0xaa, 0x00, 0xaa}, /* 0x05 Magenta */
{0xaa, 0xaa, 0x00}, /* 0x06 */
{0xaa, 0xaa, 0xaa}, /* 0x07 White (Light Gray) */
{0x00, 0x00, 0x55}, /* 0x08 */
{0x00, 0x00, 0xff}, /* 0x09 */
{0x00, 0xaa, 0x55}, /* 0x0a */
{0x00, 0xaa, 0xff}, /* 0x0b */
{0xaa, 0x00, 0x55}, /* 0x0c */
{0xaa, 0x00, 0xff}, /* 0x0d */
{0xaa, 0xaa, 0x55}, /* 0x0e */
{0xaa, 0xaa, 0xff}, /* 0x0f */
{0x00, 0x55, 0x00}, /* 0x10 */
{0x00, 0x55, 0xaa}, /* 0x11 */
{0x00, 0xff, 0x00}, /* 0x12 */
{0x00, 0xff, 0xaa}, /* 0x13 */
{0xaa, 0x55, 0x00}, /* 0x14 Brown */
{0xaa, 0x55, 0xaa}, /* 0x15 */
{0xaa, 0xff, 0x00}, /* 0x16 */
{0xaa, 0xff, 0xaa}, /* 0x17 */
{0x00, 0x55, 0x55}, /* 0x18 */
{0x00, 0x55, 0xff}, /* 0x19 */
{0x00, 0xff, 0x55}, /* 0x1a */
{0x00, 0xff, 0xff}, /* 0x1b */
{0xaa, 0x55, 0x55}, /* 0x1c */
{0xaa, 0x55, 0xff}, /* 0x1d */
{0xaa, 0xff, 0x55}, /* 0x1e */
{0xaa, 0xff, 0xff}, /* 0x1f */
{0x55, 0x00, 0x00}, /* 0x20 */
{0x55, 0x00, 0xaa}, /* 0x21 */
{0x55, 0xaa, 0x00}, /* 0x22 */
{0x55, 0xaa, 0xaa}, /* 0x23 */
{0xff, 0x00, 0x00}, /* 0x24 */
{0xff, 0x00, 0xaa}, /* 0x25 */
{0xff, 0xaa, 0x00}, /* 0x26 */
{0xff, 0xaa, 0xaa}, /* 0x27 */
{0x55, 0x00, 0x55}, /* 0x28 */
{0x55, 0x00, 0xff}, /* 0x29 */
{0x55, 0xaa, 0x55}, /* 0x2a */
{0x55, 0xaa, 0xff}, /* 0x2b */
{0xff, 0x00, 0x55}, /* 0x2c */
{0xff, 0x00, 0xff}, /* 0x2d */
{0xff, 0xaa, 0x55}, /* 0x2e */
{0xff, 0xaa, 0xff}, /* 0x2f */
{0x55, 0x55, 0x00}, /* 0x30 */
{0x55, 0x55, 0xaa}, /* 0x31 */
{0x55, 0xff, 0x00}, /* 0x32 */
{0x55, 0xff, 0xaa}, /* 0x33 */
{0xff, 0x55, 0x00}, /* 0x34 */
{0xff, 0x55, 0xaa}, /* 0x35 */
{0xff, 0xff, 0x00}, /* 0x36 */
{0xff, 0xff, 0xaa}, /* 0x37 */
{0x55, 0x55, 0x55}, /* 0x38 Dark Gray */
{0x55, 0x55, 0xff}, /* 0x39 Light Blue */
{0x55, 0xff, 0x55}, /* 0x3a Light Green */
{0x55, 0xff, 0xff}, /* 0x3b Light Cyan */
{0xff, 0x55, 0x55}, /* 0x3c Light Red */
{0xff, 0x55, 0xff}, /* 0x3d Light Magenta */
{0xff, 0xff, 0x55}, /* 0x3e Yellow */
{0xff, 0xff, 0xff}, /* 0x3f White */
{0,0,0} /* The next 192 entries are all zeros */
};
static HANDLE VGA_timer;
static HANDLE VGA_timer_thread;
/* set the timer rate; called in the polling thread context */
static void CALLBACK set_timer_rate( ULONG_PTR arg )
{
LARGE_INTEGER when;
when.u.LowPart = when.u.HighPart = 0;
SetWaitableTimer( VGA_timer, &when, arg, VGA_Poll, 0, FALSE );
}
static DWORD CALLBACK VGA_TimerThread( void *dummy )
{
for (;;) SleepEx( INFINITE, TRUE );
return 0;
}
static void VGA_DeinstallTimer(void)
{
if (VGA_timer_thread)
{
/*
* Make sure the update thread is not holding
* system resources when we kill it.
*
* Now, we only need to worry about update thread
* getting terminated while in EnterCriticalSection
* or WaitForMultipleObjectsEx.
*
* FIXME: Is this a problem?
*/
EnterCriticalSection(&vga_lock);
CancelWaitableTimer( VGA_timer );
CloseHandle( VGA_timer );
TerminateThread( VGA_timer_thread, 0 );
CloseHandle( VGA_timer_thread );
VGA_timer_thread = 0;
LeaveCriticalSection(&vga_lock);
/*
* Synchronize display. This makes sure that
* changes to display become visible even if program
* terminates before update thread had time to run.
*/
VGA_Poll( 0, 0, 0 );
}
}
static void VGA_InstallTimer(unsigned Rate)
{
if (!VGA_timer_thread)
{
VGA_timer = CreateWaitableTimerA( NULL, FALSE, NULL );
VGA_timer_thread = CreateThread( NULL, 0, VGA_TimerThread, NULL, 0, NULL );
}
QueueUserAPC( set_timer_rate, VGA_timer_thread, (ULONG_PTR)Rate );
}
static BOOL VGA_IsTimerRunning(void)
{
return VGA_timer_thread ? TRUE : FALSE;
}
static HANDLE VGA_AlphaConsole(void)
{
/* this assumes that no Win32 redirection has taken place, but then again,
* only 16-bit apps are likely to use this part of Wine... */
return GetStdHandle(STD_OUTPUT_HANDLE);
}
static char*VGA_AlphaBuffer(void)
{
return (char *)0xb8000;
}
/*** GRAPHICS MODE ***/
typedef struct {
unsigned Xres, Yres, Depth;
int ret;
} ModeSet;
/**********************************************************************
* VGA_SyncWindow
*
* Copy VGA window into framebuffer (if argument is TRUE) or
* part of framebuffer into VGA window (if argument is FALSE).
*/
static void VGA_SyncWindow( BOOL target_is_fb )
{
int size = vga_fb_window_size;
/* Window does not overlap framebuffer. */
if (vga_fb_window >= vga_fb_size)
return;
/* Check if window overlaps framebuffer only partially. */
if (vga_fb_size - vga_fb_window < vga_fb_window_size)
size = vga_fb_size - vga_fb_window;
if (target_is_fb)
memmove( vga_fb_data + vga_fb_window, vga_fb_window_data, size );
else
memmove( vga_fb_window_data, vga_fb_data + vga_fb_window, size );
}
static void WINAPI VGA_DoExit(ULONG_PTR arg)
{
VGA_DeinstallTimer();
IDirectDrawSurface_SetPalette(lpddsurf,NULL);
IDirectDrawSurface_Release(lpddsurf);
lpddsurf=NULL;
IDirectDrawPalette_Release(lpddpal);
lpddpal=NULL;
IDirectDraw_Release(lpddraw);
lpddraw=NULL;
}
static void WINAPI VGA_DoSetMode(ULONG_PTR arg)
{
HRESULT res;
ModeSet *par = (ModeSet *)arg;
par->ret=1;
if (lpddraw) VGA_DoExit(0);
if (!lpddraw) {
res = DirectDrawCreate(NULL,&lpddraw,NULL);
if (!lpddraw) {
ERR("DirectDraw is not available (res = 0x%x)\n",res);
return;
}
if (!vga_hwnd) {
vga_hwnd = CreateWindowExA(0,"STATIC","WINEDOS VGA",
WS_POPUP|WS_VISIBLE|SS_NOTIFY,0,0,
par->Xres,par->Yres,0,0,0,NULL);
if (!vga_hwnd) {
ERR("Failed to create user window.\n");
IDirectDraw_Release(lpddraw);
lpddraw=NULL;
return;
}
}
else
SetWindowPos(vga_hwnd,0,0,0,par->Xres,par->Yres,SWP_NOMOVE|SWP_NOZORDER);
res=IDirectDraw_SetCooperativeLevel(lpddraw,vga_hwnd,DDSCL_FULLSCREEN|DDSCL_EXCLUSIVE);
if (res != S_OK) {
ERR("Could not set cooperative level to exclusive (0x%x)\n",res);
}
res=IDirectDraw_SetDisplayMode(lpddraw,par->Xres,par->Yres,par->Depth);
if (res != S_OK) {
ERR("DirectDraw does not support requested display mode (%dx%dx%d), res = 0x%x!\n",par->Xres,par->Yres,par->Depth,res);
IDirectDraw_Release(lpddraw);
lpddraw=NULL;
return;
}
res=IDirectDraw_CreatePalette(lpddraw,DDPCAPS_8BIT,NULL,&lpddpal,NULL);
if (res != S_OK) {
ERR("Could not create palette (res = 0x%x)\n",res);
IDirectDraw_Release(lpddraw);
lpddraw=NULL;
return;
}
res=IDirectDrawPalette_SetEntries(lpddpal,0,0,vga_fb_palette_size,vga_fb_palette);
if (res != S_OK) {
ERR("Could not set default palette entries (res = 0x%x)\n", res);
}
memset(&sdesc,0,sizeof(sdesc));
sdesc.dwSize=sizeof(sdesc);
sdesc.dwFlags = DDSD_CAPS;
sdesc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE;
res=IDirectDraw_CreateSurface(lpddraw,&sdesc,&lpddsurf,NULL);
if (res != S_OK || !lpddsurf) {
ERR("DirectDraw surface is not available\n");
IDirectDraw_Release(lpddraw);
lpddraw=NULL;
return;
}
IDirectDrawSurface_SetPalette(lpddsurf,lpddpal);
vga_retrace_vertical = vga_retrace_horizontal = FALSE;
/* poll every 20ms (50fps should provide adequate responsiveness) */
VGA_InstallTimer(20);
}
par->ret=0;
return;
}
/**********************************************************************\
* VGA_GetModeInfo
*
* Returns mode information, given mode number
\**********************************************************************/
const VGA_MODE *VGA_GetModeInfo(WORD mode)
{
const VGA_MODE *ModeInfo = VGA_modelist;
/*
* Filter out flags.
*/
mode &= 0x17f;
while (ModeInfo->Mode != 0xffff)
{
if (ModeInfo->Mode == mode)
return ModeInfo;
ModeInfo++;
}
return NULL;
}
static int VGA_SetGraphicMode(WORD mode)
{
ModeSet par;
int newSize;
/* get info on VGA mode & set appropriately */
const VGA_MODE *ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
/* check if we're assuming composite display */
if ((mode == 6) && (CGA_ColorComposite))
{
vga_fb_width = (ModeInfo->Width / 4);
vga_fb_height = ModeInfo->Height;
vga_fb_depth = (ModeInfo->Depth * 4);
}
else
{
vga_fb_width = ModeInfo->Width;
vga_fb_height = ModeInfo->Height;
vga_fb_depth = ModeInfo->Depth;
}
vga_fb_offset = 0;
vga_fb_pitch = vga_fb_width * ((vga_fb_depth + 7) / 8);
newSize = vga_fb_width * vga_fb_height * ((vga_fb_depth + 7) / 8);
if(newSize < 256 * 1024)
newSize = 256 * 1024;
if(vga_fb_size < newSize) {
HeapFree(GetProcessHeap(), 0, vga_fb_data);
vga_fb_data = HeapAlloc(GetProcessHeap(), 0, newSize);
vga_fb_size = newSize;
}
if(vga_fb_width >= 640 || vga_fb_height >= 480) {
par.Xres = vga_fb_width;
par.Yres = vga_fb_height;
} else {
par.Xres = 640;
par.Yres = 480;
}
/* Setup window */
if(vga_fb_depth >= 8)
{
vga_fb_window_data = VGA_WINDOW_START;
vga_fb_window_size = VGA_WINDOW_SIZE;
vga_fb_palette = vga_def_palette;
vga_fb_palette_size = 256;
}
else
{
vga_fb_window_data = CGA_WINDOW_START;
vga_fb_window_size = CGA_WINDOW_SIZE;
if(vga_fb_depth == 2)
{
/* Select default 2 bit CGA palette */
vga_fb_palette = cga_palette1;
vga_fb_palette_size = 4;
}
else
{
/* Top of VGA palette is same as 4 bit CGA palette */
vga_fb_palette = vga_def_palette;
vga_fb_palette_size = 16;
}
vga_fb_palette_index = 0;
vga_fb_bright = 0;
}
/* Clean the HW buffer */
memset(vga_fb_window_data, 0x00, vga_fb_window_size);
/* Reset window start */
VGA_SetWindowStart(0);
par.Depth = (vga_fb_depth < 8) ? 8 : vga_fb_depth;
MZ_RunInThread(VGA_DoSetMode, (ULONG_PTR)&par);
return par.ret;
}
int VGA_SetMode(WORD mode)
{
const VGA_MODE *ModeInfo;
/* get info on VGA mode & set appropriately */
VGA_CurrentMode = mode;
ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
/* check if mode is supported */
if (ModeInfo->Supported)
{
FIXME("Setting VGA mode %i - Supported mode - Improve reporting of missing capabilities for modes & modetypes.\n", mode);
}
else
{
FIXME("Setting VGA mode %i - Unsupported mode - Will doubtfully work at all, but we'll try anyways.\n", mode);
}
/* set up graphic or text display */
if (ModeInfo->ModeType == TEXT)
{
VGA_SetAlphaMode(ModeInfo->TextCols, ModeInfo->TextRows);
}
else
{
return VGA_SetGraphicMode(mode);
}
return 0; /* assume all good & return zero */
}
int VGA_GetMode(unsigned*Height,unsigned*Width,unsigned*Depth)
{
if (!lpddraw) return 1;
if (!lpddsurf) return 1;
if (Height) *Height=sdesc.dwHeight;
if (Width) *Width=sdesc.dwWidth;
if (Depth) *Depth=sdesc.ddpfPixelFormat.u1.dwRGBBitCount;
return 0;
}
static void VGA_Exit(void)
{
if (lpddraw) MZ_RunInThread(VGA_DoExit, 0);
}
void VGA_SetPalette(PALETTEENTRY*pal,int start,int len)
{
if (!lpddraw) return;
IDirectDrawPalette_SetEntries(lpddpal,0,start,len,pal);
}
/* set a single [char wide] color in 16 color mode. */
void VGA_SetColor16(int reg,int color)
{
PALETTEENTRY *pal;
if (!lpddraw) return;
pal= &vga_def64_palette[color];
IDirectDrawPalette_SetEntries(lpddpal,0,reg,1,pal);
vga_16_palette[reg]=(char)color;
}
/* Get a single [char wide] color in 16 color mode. */
char VGA_GetColor16(int reg)
{
if (!lpddraw) return 0;
return vga_16_palette[reg];
}
/* set all 17 [char wide] colors at once in 16 color mode. */
void VGA_Set16Palette(char *Table)
{
PALETTEENTRY *pal;
int c;
if (!lpddraw) return; /* return if we're in text only mode */
memcpy( Table, vga_16_palette, 17 ); /* copy the entries into the table */
for (c=0; c<17; c++) { /* 17 entries */
pal= &vga_def64_palette[(int)vga_16_palette[c]]; /* get color */
IDirectDrawPalette_SetEntries(lpddpal,0,c,1,pal); /* set entry */
TRACE("Palette register %d set to %d\n",c,(int)vga_16_palette[c]);
} /* end of the counting loop */
}
/* Get all 17 [ char wide ] colors at once in 16 color mode. */
void VGA_Get16Palette(char *Table)
{
if (!lpddraw) return; /* return if we're in text only mode */
memcpy( vga_16_palette, Table, 17 ); /* copy the entries into the table */
}
static LPSTR VGA_Lock(unsigned*Pitch,unsigned*Height,unsigned*Width,unsigned*Depth)
{
if (!lpddraw) return NULL;
if (!lpddsurf) return NULL;
if (IDirectDrawSurface_Lock(lpddsurf,NULL,&sdesc,0,0) != S_OK) {
ERR("could not lock surface!\n");
return NULL;
}
if (Pitch) *Pitch=sdesc.u1.lPitch;
if (Height) *Height=sdesc.dwHeight;
if (Width) *Width=sdesc.dwWidth;
if (Depth) *Depth=sdesc.ddpfPixelFormat.u1.dwRGBBitCount;
return sdesc.lpSurface;
}
static void VGA_Unlock(void)
{
IDirectDrawSurface_Unlock(lpddsurf,sdesc.lpSurface);
}
/*
* Set start of 64k window at 0xa0000 in bytes.
* If value is -1, initialize color plane support.
* If value is >= 0, window contains direct copy of framebuffer.
*/
void VGA_SetWindowStart(int start)
{
if(start == vga_fb_window)
return;
EnterCriticalSection(&vga_lock);
if(vga_fb_window == -1)
FIXME("Remove VGA memory emulation.\n");
else
VGA_SyncWindow( TRUE );
vga_fb_window = start;
if(vga_fb_window == -1)
FIXME("Install VGA memory emulation.\n");
else
VGA_SyncWindow( FALSE );
LeaveCriticalSection(&vga_lock);
}
/*
* Get start of 64k window at 0xa0000 in bytes.
* Value is -1 in color plane modes.
*/
int VGA_GetWindowStart(void)
{
return vga_fb_window;
}
/**********************************************************************
* VGA_DoShowMouse
*
* Callback for VGA_ShowMouse.
*/
static void WINAPI VGA_DoShowMouse( ULONG_PTR show )
{
INT rv;
do
{
rv = ShowCursor( show );
}
while( show ? (rv < 0) : (rv >= 0) );
}
/**********************************************************************
* VGA_ShowMouse
*
* If argument is TRUE, unconditionally show mouse cursor.
* If argument is FALSE, unconditionally hide mouse cursor.
* This only works in graphics mode.
*/
void VGA_ShowMouse( BOOL show )
{
if (lpddraw)
MZ_RunInThread( VGA_DoShowMouse, (ULONG_PTR)show );
}
/**********************************************************************
* VGA_UpdatePalette
*
* Update the current palette
*
* Note: When updating the current CGA palette, palette index 0
* refers to palette2, and index 1 is palette1 (default palette)
*/
void VGA_UpdatePalette(void)
{
/* Figure out which palette is used now */
if(vga_fb_bright)
{
if(vga_fb_palette_index == 0)
{
vga_fb_palette = cga_palette2_bright;
}
else if(vga_fb_palette_index == 1)
{
vga_fb_palette = cga_palette1_bright;
}
}
else
{
if(vga_fb_palette_index == 0)
{
vga_fb_palette = cga_palette2;
}
else if(vga_fb_palette_index == 1)
{
vga_fb_palette = cga_palette1;
}
}
/* Now update the palette */
VGA_SetPalette(vga_fb_palette,0,4);
}
/**********************************************************************
* VGA_SetBright
*
* Select if using a "bright" palette or not.
* This is a property of the CGA controller
*/
void VGA_SetBright(BOOL bright)
{
TRACE("%i\n", bright);
/* Remember the "bright" value used by the CGA controller */
vga_fb_bright = bright;
}
/**********************************************************************
* VGA_SetEnabled
*
* Select if output is enabled or disabled
* This is a property of the CGA controller
*/
static void VGA_SetEnabled(BOOL enabled)
{
TRACE("%i\n", enabled);
/* Check if going from enabled to disabled */
if(vga_fb_enabled && !enabled)
{
/* Clear frame buffer */
memset(vga_fb_window_data, 0x00, vga_fb_window_size);
}
/* Remember the "enabled" value */
vga_fb_enabled = enabled;
}
/**********************************************************************
* VGA_SetPaletteIndex
*
* Select the index of the palette which is currently in use
* This is a property of the CGA controller
*/
void VGA_SetPaletteIndex(unsigned index)
{
TRACE("%i\n", index);
/* Remember the palette index, which is only used by CGA for now */
vga_fb_palette_index = index;
}
/**********************************************************************
* VGA_WritePixel
*
* Write data to the framebuffer
* This is a property of the CGA controller, but might be supported
* later by other framebuffer types
*/
void VGA_WritePixel(unsigned color, unsigned page, unsigned col, unsigned row)
{
int off;
int bits;
int pos;
/* Calculate CGA byte offset */
char *data = vga_fb_window_data;
off = row & 1 ? (8 * 1024) : 0;
off += (80 * (row/2));
off += col/4;
/* Calculate bits offset */
pos = 6 - (col%4 * 2);
/* Clear current data */
bits = 0x03 << pos;
data[off] &= ~bits;
/* Set new data */
bits = color << pos;
data[off] |= bits;
}
/*** TEXT MODE ***/
/* prepare the text mode video memory copy that is used to only
* update the video memory line that did get updated. */
static void VGA_PrepareVideoMemCopy(unsigned Xres, unsigned Yres)
{
char *p, *p2;
unsigned int i;
/*
* Allocate space for char + attr.
*/
if (vga_text_old)
vga_text_old = HeapReAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
vga_text_old, Xres * Yres * 2 );
else
vga_text_old = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY,
Xres * Yres * 2 );
p = VGA_AlphaBuffer();
p2 = vga_text_old;
/* make sure the video mem copy contains the exact opposite of our
* actual text mode memory area to make sure the screen
* does get updated fully initially */
for (i=0; i < Xres*Yres*2; i++)
*p2++ = *p++ ^ 0xff; /* XOR it */
}
/**********************************************************************
* VGA_SetAlphaMode
*
* Set VGA emulation to text mode.
*/
void VGA_SetAlphaMode(unsigned Xres,unsigned Yres)
{
VGA_Exit();
VGA_DeinstallTimer();
VGA_PrepareVideoMemCopy(Xres, Yres);
vga_text_width = Xres;
vga_text_height = Yres;
if (vga_text_x >= vga_text_width || vga_text_y >= vga_text_height)
VGA_SetCursorPos(0,0);
if(vga_text_console) {
COORD size;
size.X = Xres;
size.Y = Yres;
SetConsoleScreenBufferSize( VGA_AlphaConsole(), size );
/* poll every 30ms (33fps should provide adequate responsiveness) */
VGA_InstallTimer(30);
}
}
/**********************************************************************
* VGA_InitAlphaMode
*
* Initialize VGA text mode handling and return default text mode.
* This function does not set VGA emulation to text mode.
*/
void VGA_InitAlphaMode(unsigned*Xres,unsigned*Yres)
{
CONSOLE_SCREEN_BUFFER_INFO info;
if(GetConsoleScreenBufferInfo( VGA_AlphaConsole(), &info ))
{
vga_text_console = TRUE;
vga_text_x = info.dwCursorPosition.X;
vga_text_y = info.dwCursorPosition.Y;
vga_text_attr = info.wAttributes;
*Xres = info.dwSize.X;
*Yres = info.dwSize.Y;
}
else
{
vga_text_console = FALSE;
vga_text_x = 0;
vga_text_y = 0;
vga_text_attr = 0x0f;
*Xres = 80;
*Yres = 25;
}
}
/**********************************************************************
* VGA_GetAlphaMode
*
* Get current text mode. Returns TRUE and sets resolution if
* any VGA text mode has been initialized.
*/
BOOL VGA_GetAlphaMode(unsigned*Xres,unsigned*Yres)
{
if (vga_text_width != 0 && vga_text_height != 0) {
*Xres = vga_text_width;
*Yres = vga_text_height;
return TRUE;
} else
return FALSE;
}
void VGA_SetCursorShape(unsigned char start_options, unsigned char end)
{
CONSOLE_CURSOR_INFO cci;
/* standard cursor settings:
* 0x0607 == CGA, 0x0b0c == monochrome, 0x0d0e == EGA/VGA */
/* calculate percentage from bottom - assuming VGA (bottom 0x0e) */
cci.dwSize = ((end & 0x1f) - (start_options & 0x1f))/0x0e * 100;
if (!cci.dwSize) cci.dwSize++; /* NULL cursor would make SCCI() fail ! */
cci.bVisible = ((start_options & 0x60) != 0x20); /* invisible ? */
SetConsoleCursorInfo(VGA_AlphaConsole(),&cci);
}
void VGA_SetCursorPos(unsigned X,unsigned Y)
{
vga_text_x = X;
vga_text_y = Y;
}
void VGA_GetCursorPos(unsigned*X,unsigned*Y)
{
if (X) *X = vga_text_x;
if (Y) *Y = vga_text_y;
}
static void VGA_PutCharAt(unsigned x, unsigned y, BYTE ascii, int attr)
{
const VGA_MODE *ModeInfo = VGA_GetModeInfo(VGA_CurrentMode);
if ( ModeInfo->ModeType == TEXT )
{
char *dat = VGA_AlphaBuffer() + ((vga_text_width * y + x) * 2);
dat[0] = ascii;
if (attr>=0)
dat[1] = attr;
}
else
{
FIXME("Write %c at (%i,%i) - not yet supported in graphic modes.\n", (char)ascii, x, y);
}
}
void VGA_WriteChars(unsigned X,unsigned Y,unsigned ch,int attr,int count)
{
EnterCriticalSection(&vga_lock);
while (count--)
VGA_PutCharAt(X + count, Y, ch, attr);
LeaveCriticalSection(&vga_lock);
}
void VGA_PutChar(BYTE ascii)
{
DWORD w;
EnterCriticalSection(&vga_lock);
switch(ascii) {
case '\b':
if (vga_text_x)
{
vga_text_x--;
VGA_PutCharAt(vga_text_x, vga_text_y, ' ', 0);
}
break;
case '\t':
vga_text_x += ((vga_text_x + 8) & ~7) - vga_text_x;
break;
case '\n':
vga_text_y++;
vga_text_x = 0;
break;
case '\a':
break;
case '\r':
vga_text_x = 0;
break;
default:
VGA_PutCharAt(vga_text_x, vga_text_y, ascii, vga_text_attr);
vga_text_x++;
}
if (vga_text_x >= vga_text_width)
{
vga_text_x = 0;
vga_text_y++;
}
if (vga_text_y >= vga_text_height)
{
vga_text_y = vga_text_height - 1;
VGA_ScrollUpText( 0, 0,
vga_text_height - 1, vga_text_width - 1,
1, vga_text_attr );
}
/*
* If we don't have a console, write directly to standard output.
*/
if(!vga_text_console)
WriteFile(VGA_AlphaConsole(), &ascii, 1, &w, NULL);
LeaveCriticalSection(&vga_lock);
}
void VGA_ClearText(unsigned row1, unsigned col1,
unsigned row2, unsigned col2,
BYTE attr)
{
unsigned x, y;
EnterCriticalSection(&vga_lock);
for(y=row1; y<=row2; y++)
for(x=col1; x<=col2; x++)
VGA_PutCharAt(x, y, 0x20, attr);
LeaveCriticalSection(&vga_lock);
}
void VGA_ScrollUpText(unsigned row1, unsigned col1,
unsigned row2, unsigned col2,
unsigned lines, BYTE attr)
{
char *buffer = VGA_AlphaBuffer();
unsigned y;
EnterCriticalSection(&vga_lock);
/*
* Scroll buffer.
*/
for (y = row1; y <= row2 - lines; y++)
memmove( buffer + col1 + y * vga_text_width * 2,
buffer + col1 + (y + lines) * vga_text_width * 2,
(col2 - col1 + 1) * 2 );
/*
* Fill exposed lines.
*/
for (y = max(row1, row2 - lines + 1); y <= row2; y++)
VGA_WriteChars( col1, y, ' ', attr, col2 - col1 + 1 );
LeaveCriticalSection(&vga_lock);
}
void VGA_ScrollDownText(unsigned row1, unsigned col1,
unsigned row2, unsigned col2,
unsigned lines, BYTE attr)
{
char *buffer = VGA_AlphaBuffer();
unsigned y;
EnterCriticalSection(&vga_lock);
/*
* Scroll buffer.
*/
for (y = row2; y >= row1 + lines; y--)
memmove( buffer + col1 + y * vga_text_width * 2,
buffer + col1 + (y - lines) * vga_text_width * 2,
(col2 - col1 + 1) * 2 );
/*
* Fill exposed lines.
*/
for (y = row1; y <= min(row1 + lines - 1, row2); y++)
VGA_WriteChars( col1, y, ' ', attr, col2 - col1 + 1 );
LeaveCriticalSection(&vga_lock);
}
void VGA_GetCharacterAtCursor(BYTE *ascii, BYTE *attr)
{
char *dat;
dat = VGA_AlphaBuffer() + ((vga_text_width * vga_text_y + vga_text_x) * 2);
*ascii = dat[0];
*attr = dat[1];
}
/*** CONTROL ***/
/* FIXME: optimize by doing this only if the data has actually changed
* (in a way similar to DIBSection, perhaps) */
static void VGA_Poll_Graphics(void)
{
unsigned int Pitch, Height, Width, X, Y;
char *surf;
char *dat = vga_fb_data + vga_fb_offset;
int bpp = (vga_fb_depth + 7) / 8;
surf = VGA_Lock(&Pitch,&Height,&Width,NULL);
if (!surf) return;
/*
* Synchronize framebuffer contents.
*/
if (vga_fb_window != -1)
VGA_SyncWindow( TRUE );
/*
* CGA framebuffer (160x200) - CGA_ColorComposite, special subtype of mode 6
* This buffer is encoded as following:
* - 4 bit pr. pixel, 2 pixels per byte
* - 80 bytes per row
* - Every second line has an offset of 8096
*/
if(vga_fb_depth == 4 && vga_fb_width == 160 && vga_fb_height == 200){
WORD off = 0;
BYTE bits = 4;
BYTE value;
for(Y=0; Y<vga_fb_height; Y++, surf+=(Pitch*2)){
for(X=0; X<vga_fb_width; X++){
off = Y & 1 ? (8 * 1024) : 0;
off += (80 * (Y/2));
off += X/2;
value = (dat[off] >> bits) & 0xF;
surf[(X*4)+0] = value;
surf[(X*4)+1] = value;
surf[(X*4)+2] = value;
surf[(X*4)+3] = value;
surf[(X*4)+Pitch+0] = value;
surf[(X*4)+Pitch+1] = value;
surf[(X*4)+Pitch+2] = value;
surf[(X*4)+Pitch+3] = value;
bits -= 4;
bits &= 7;
}
}
}
/*
* CGA framebuffer (320x200)
* This buffer is encoded as following:
* - 2 bits per color, 4 pixels per byte
* - 80 bytes per row
* - Every second line has an offset of 8096
*/
else if(vga_fb_depth == 2 && vga_fb_width == 320 && vga_fb_height == 200){
WORD off = 0;
BYTE bits = 6;
BYTE value;
/* Go thru rows */
for(Y=0; Y<vga_fb_height; Y++, surf+=(Pitch*2)){
for(X=0; X<vga_fb_width; X++){
off = Y & 1 ? (8 * 1024) : 0;
off += (80 * (Y/2));
off += X/4;
value = (dat[off] >> bits) & 0x3;
surf[(X*2)] = value;
surf[(X*2)+1] = value;
surf[(X*2)+Pitch] = value;
surf[(X*2)+Pitch+1] = value;
bits -= 2;
bits &= 7;
}
}
}
/*
* Double VGA framebuffer (320x200 -> 640x400), if needed.
*/
else if(Height >= 2 * vga_fb_height && Width >= 2 * vga_fb_width && bpp == 1)
for (Y=0; Y<vga_fb_height; Y++,surf+=Pitch*2,dat+=vga_fb_pitch)
for (X=0; X<vga_fb_width; X++) {
BYTE value = dat[X];
surf[X*2] = value;
surf[X*2+1] = value;
surf[X*2+Pitch] = value;
surf[X*2+Pitch+1] = value;
}
/*
* Linear Buffer, including mode 19
*/
else
for (Y=0; Y<vga_fb_height; Y++,surf+=Pitch,dat+=vga_fb_pitch)
memcpy(surf, dat, vga_fb_width * bpp);
VGA_Unlock();
}
static void VGA_Poll_Text(void)
{
char *dat, *old, *p_line;
unsigned int X, Y;
CHAR_INFO ch[256]; /* that should suffice for the largest text width */
COORD siz, off;
SMALL_RECT dest;
HANDLE con = VGA_AlphaConsole();
BOOL linechanged = FALSE; /* video memory area differs from stored copy? */
/* Synchronize cursor position. */
off.X = vga_text_x;
off.Y = vga_text_y;
SetConsoleCursorPosition(con,off);
dat = VGA_AlphaBuffer();
old = vga_text_old; /* pointer to stored video mem copy */
siz.X = vga_text_width; siz.Y = 1;
off.X = 0; off.Y = 0;
/* copy from virtual VGA frame buffer to console */
for (Y=0; Y<vga_text_height; Y++) {
linechanged = memcmp(dat, old, vga_text_width*2);
if (linechanged)
{
/*TRACE("line %d changed\n", Y);*/
p_line = dat;
for (X=0; X<vga_text_width; X++) {
ch[X].Char.AsciiChar = *p_line++;
/* WriteConsoleOutputA doesn't like "dead" chars */
if (ch[X].Char.AsciiChar == '\0')
ch[X].Char.AsciiChar = ' ';
ch[X].Attributes = *p_line++;
}
dest.Top=Y; dest.Bottom=Y;
dest.Left=0; dest.Right=vga_text_width+1;
WriteConsoleOutputA(con, ch, siz, off, &dest);
memcpy(old, dat, vga_text_width*2);
}
/* advance to next text line */
dat += vga_text_width*2;
old += vga_text_width*2;
}
}
static void CALLBACK VGA_Poll( LPVOID arg, DWORD low, DWORD high )
{
EnterCriticalSection(&vga_lock);
if (lpddraw)
VGA_Poll_Graphics();
else
VGA_Poll_Text();
/*
* Fake start of retrace.
*/
vga_retrace_vertical = TRUE;
LeaveCriticalSection(&vga_lock);
}
static BYTE palreg,palcnt;
static PALETTEENTRY paldat;
void VGA_ioport_out( WORD port, BYTE val )
{
switch (port) {
/* General Register - Feature Control */
case 0x3ba:
FIXME("Unsupported VGA register: general register - feature control 0x%04x (value 0x%02x)\n", port, val);
break;
/* Attribute Controller - Address/Other */
case 0x3c0:
if (vga_address_3c0)
vga_index_3c0 = val;
else
FIXME("Unsupported index, VGA attribute controller register 0x3c0: 0x%02x (value 0x%02x)\n",
vga_index_3c0, val);
vga_address_3c0 = !vga_address_3c0;
break;
/* General Register - Misc output */
case 0x3c2:
FIXME("Unsupported VGA register: general register - misc output 0x%04x (value 0x%02x)\n", port, val);
break;
/* General Register - Video subsystem enable */
case 0x3c3:
FIXME("Unsupported VGA register: general register - video subsystem enable 0x%04x (value 0x%02x)\n", port, val);
break;
/* Sequencer Register - Address */
case 0x3c4:
vga_index_3c4 = val;
break;
/* Sequencer Register - Other */
case 0x3c5:
switch(vga_index_3c4) {
case 0x04: /* Sequencer: Memory Mode Register */
if(vga_fb_depth == 8)
VGA_SetWindowStart((val & 8) ? 0 : -1);
else
FIXME("Memory Mode Register not supported in this mode.\n");
break;
default:
FIXME("Unsupported index, VGA sequencer register 0x3c4: 0x%02x (value 0x%02x)\n",
vga_index_3c4, val);
}
break;
case 0x3c8:
palreg=val; palcnt=0; break;
case 0x3c9:
((BYTE*)&paldat)[palcnt++]=val << 2;
if (palcnt==3) {
VGA_SetPalette(&paldat,palreg++,1);
palcnt=0;
}
break;
/* Graphics Controller Register - Address */
case 0x3ce:
vga_index_3ce = val;
break;
/* Graphics Controller Register - Other */
case 0x3cf:
FIXME("Unsupported index, VGA graphics controller register - other 0x3ce: 0x%02x (value 0x%02x)\n",
vga_index_3ce, val);
break;
/* CRT Controller Register - Index (MDA) */
case 0x3b4:
/* CRT Controller Register - Index (CGA) */
case 0x3d4:
vga_index_3d4 = val;
break;
/* CRT Controller Register - Other (MDA) */
case 0x3b5:
/* CRT Controller Register - Other (CGA) */
case 0x3d5:
FIXME("Unsupported index, VGA crt controller register 0x3b4/0x3d4: 0x%02x (value 0x%02x)\n",
vga_index_3d4, val);
break;
/* Mode control register - 6845 Motorola (MDA) */
case 0x3b8:
/* Mode control register - 6845 Motorola (CGA) */
case 0x3d8:
/*
* xxxxxxx1 = 80x25 text
* xxxxxxx0 = 40x25 text (default)
* xxxxxx1x = graphics (320x200)
* xxxxxx0x = text
* xxxxx1xx = B/W
* xxxxx0xx = color
* xxxx1xxx = enable video signal
* xxx1xxxx = 640x200 B/W graphics
* xx1xxxxx = blink
*/
/* check bits 6 and 7 */
if (val & 0xC0)
{
FIXME("Unsupported value, VGA register 0x3d8: 0x%02x - bits 7 and 6 not supported.\n", val);
}
/* check bits 5 - blink on */
if (val & 0x20)
{
FIXME("Unsupported value, VGA register 0x3d8: 0x%02x (bit 5) - blink is not supported.\n", val);
}
/* Enable Video Signal (bit 3) - Set the enabled bit */
VGA_SetEnabled((val & 0x08) != 0);
/* xxx1x010 - Detect 160x200, 16 color mode (CGA composite) */
if( (val & 0x17) == 0x12 )
{
/* Switch to 160x200x4 composite mode - special case of mode 6 */
CGA_ColorComposite = TRUE;
VGA_SetMode(6);
}
else
{
/* turn off composite colors otherwise, including 320x200 (80x200 16 color) */
CGA_ColorComposite = FALSE;
}
/* xxx0x100 - Detect VGA mode 0 */
if( (val & 0x17) == 0x04 )
{
VGA_SetMode(0);
}
/* xxx0x000 - Detect VGA mode 1 */
else if( (val & 0x17) == 0x00 )
{
VGA_SetMode(1);
}
/* xxx0x101 - Detect VGA mode 2 */
else if( (val & 0x17) == 0x05 )
{
VGA_SetMode(2);
}
/* xxx0x001 - Detect VGA mode 3 */
else if( (val & 0x17) == 0x01 )
{
VGA_SetMode(3);
}
/* xxx0x010 - Detect VGA mode 4 */
else if( (val & 0x17) == 0x02 )
{
VGA_SetMode(4);
}
/* xxx0x110 - Detect VGA mode 5 */
else if( (val & 0x17) == 0x06 )
{
VGA_SetMode(5);
}
/* xxx1x110 - Detect VGA mode 6 */
else if( (val & 0x17) == 0x16 )
{
VGA_SetMode(6);
}
/* unsupported mode */
else
{
FIXME("Unsupported value, VGA register 0x3d8: 0x%02x - unrecognized MDA/CGA mode\n", val); /* Set the enabled bit */
}
break;
/* Colour control register (CGA) */
case 0x3d9:
/* Set bright */
VGA_SetBright((val & 0x10) != 0);
/* Set palette index */
VGA_SetPaletteIndex((val & 0x20) != 0);
/* Now update the palette */
VGA_UpdatePalette();
break;
default:
FIXME("Unsupported VGA register: 0x%04x (value 0x%02x)\n", port, val);
}
}
BYTE VGA_ioport_in( WORD port )
{
BYTE ret;
switch (port) {
/* Attribute Controller - Other */
case 0x3c1:
FIXME("Unsupported index, VGA attribute controller register 0x3c0: 0x%02x\n",
vga_index_3c0);
return 0xff;
/* General Register - Input status 0 */
case 0x3c2:
ret=0xff;
FIXME("Unsupported VGA register: general register - input status 0 0x%04x\n", port);
break;
/* General Register - Video subsystem enable */
case 0x3c3:
ret=0xff;
FIXME("Unsupported VGA register: general register - video subsystem enable 0x%04x\n", port);
break;
/* Sequencer Register - Other */
case 0x3c5:
switch(vga_index_3c4) {
case 0x04: /* Sequencer: Memory Mode Register */
return (VGA_GetWindowStart() == -1) ? 0xf7 : 0xff;
default:
FIXME("Unsupported index, register 0x3c4: 0x%02x\n",
vga_index_3c4);
return 0xff;
}
/* General Register - DAC State */
case 0x3c7:
ret=0xff;
FIXME("Unsupported VGA register: general register - DAC State 0x%04x\n", port);
break;
/* General Register - Feature control */
case 0x3ca:
ret=0xff;
FIXME("Unsupported VGA register: general register - Feature control 0x%04x\n", port);
break;
/* General Register - Misc output */
case 0x3cc:
ret=0xff;
FIXME("Unsupported VGA register: general register - Feature control 0x%04x\n", port);
break;
/* Graphics Controller Register - Other */
case 0x3cf:
FIXME("Unsupported index, register 0x3ce: 0x%02x\n",
vga_index_3ce);
return 0xff;
/* CRT Controller Register - Other (MDA) */
case 0x3b5:
/* CRT Controller Register - Other (CGA) */
case 0x3d5:
FIXME("Unsupported index, VGA crt controller register 0x3b4/0x3d4: 0x%02x\n",
vga_index_3d4);
return 0xff;
/* General Register - Input status 1 (MDA) */
case 0x3ba:
/* General Register - Input status 1 (CGA) */
case 0x3da:
/*
* Read from this register resets register 0x3c0 address flip-flop.
*/
vga_address_3c0 = TRUE;
/*
* Read from this register returns following bits:
* xxxx1xxx = Vertical retrace in progress if set.
* xxxxx1xx = Light pen switched on.
* xxxxxx1x = Light pen trigger set.
* xxxxxxx1 = Either vertical or horizontal retrace
* in progress if set.
*/
ret = 0;
if (vga_retrace_vertical)
ret |= 9;
if (vga_retrace_horizontal)
ret |= 3;
/*
* If VGA mode has been set, vertical retrace is
* turned on once a frame and cleared after each read.
* This might cause applications that synchronize with
* vertical retrace to actually skip one frame but that
* is probably not a problem.
*
* If no VGA mode has been set, vertical retrace is faked
* by toggling the value after every read.
*/
if (VGA_IsTimerRunning())
vga_retrace_vertical = FALSE;
else
vga_retrace_vertical = !vga_retrace_vertical;
/*
* Toggle horizontal retrace.
*/
vga_retrace_horizontal = !vga_retrace_horizontal;
break;
default:
ret=0xff;
FIXME("Unsupported VGA register: 0x%04x\n", port);
}
return ret;
}
void VGA_Clean(void)
{
VGA_Exit();
VGA_DeinstallTimer();
}
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