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Golden Axe: the FD1094 sets goldnaxb, goldnaxc and goldnaxj working (#2203)

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goldnaxb (317-0110), goldnaxc (317-0122) and goldnaxj (317-0121) are the
Golden Axe sets with the FD1094 encrypted 68000 (MAME goldnaxe1,
goldnaxeu, goldnaxej). They were marked not working.

- The decryption keys are added to the sets and the code is decrypted
  with the FD1094 module already used by Cotton (C 68000 core).
- They get their own memory maps: the ones of goldnaxa (171-5797 board)
  and goldnaxe (171-5704 board) without the handlers that stand in for
  the 8751 in the work RAM; these sets have no 8751, they read the I/O
  and send the sound commands themselves.
- The 315-5195 memory mapper, as far as these games use it: register 3 is
  the sound command, and every frame the program moves the sprite RAM to
  one of 8 bases (0x200000-0x900000), so the sprite RAM follows the base
  in register 0x19. The mapper registers are in the save states.


Claude-Session: https://claude.ai/code/session_013Vje3pEtpLHubqCGwCgoQX

Co-authored-by: Claude Opus 5.5 <[email protected]>
This commit is contained in:
zanacandClaude Opus 5.5 authored and GitHub committed 2026-11-03 20:16:15 -05:00
1 parent ab52620ee4
commit b974d670cc
2 files changed
+176 -8
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src/drivers/system16.c
+173 -5
View File
@@ -151,6 +151,8 @@ Notes:
#include "cpu/i8039/i8039.h"
#include "system16.h"
#include "machine/fd1089.h"
#include "machine/fd1094.h"
#include "state.h"
#include "ost_samples.h"
extern void mc8123_decrypt_0066(void);
@@ -3060,6 +3062,9 @@ ROM_START( goldnaxj )
ROM_LOAD16_BYTE( "epr12521.a8", 0x80000, 0x20000, CRC(5001d713) SHA1(68cf3f48d6e440e5b800503a211adda02107d956) )
ROM_LOAD16_BYTE( "epr12519.a6", 0x80001, 0x20000, CRC(4438ca8e) SHA1(0af53d64f06abf41f4c46540d28d5f008a4835a3) )
ROM_REGION( 0x2000, REGION_USER2, 0 ) /* FD1094 decryption key */
ROM_LOAD( "317-0121.key", 0x0000, 0x2000, CRC(72afed01) SHA1(3967390fde63fa5961e71ab49b6e71c4be2ac96f) )
ROM_REGION( 0x60000, REGION_GFX1, ROMREGION_DISPOSE ) /* tiles */
ROM_LOAD( "epr12385", 0x00000, 0x20000, CRC(b8a4e7e0) SHA1(9b36f50209d45a835ded53eb045f63c649b02fc9) )
ROM_LOAD( "epr12386", 0x20000, 0x20000, CRC(25d7d779) SHA1(2de14a76a5176d5abc7e7f7f723146c620927610) )
@@ -3174,7 +3179,7 @@ static MEMORY_WRITE16_START( goldnaxe_writemem )
{ 0x1f0000, 0x1f0003, SYS16_MWA16_EXTRAM, &sys16_extraram },
{ 0x200000, 0x200fff, SYS16_MWA16_SPRITERAM, &sys16_spriteram },
{ 0xc40000, 0xc40001, sys16_coinctrl_w },
{ 0xc43000, 0xc43001, MWA16_NOP }, /* ? */
{ 0xc43000, 0xc43fff, MWA16_NOP }, /* ? */
/* { 0xfe0006, 0xfe0007, MWA16_NOP }, I think this is the real sound out */
{ 0xffec1c, 0xffec1d, goldnaxe_prot_w },/* how does this really work? */
{ 0xffecfc, 0xffecfd, ga_sound_command_w },/* probably just a buffer */
@@ -3289,6 +3294,9 @@ ROM_START( goldnaxb )
ROM_LOAD16_BYTE( "epr12389.a2", 0x00000, 0x40000, CRC(35d5fa77) SHA1(b16b312eb1c91c412fee61002599812e30e321ee) )
ROM_LOAD16_BYTE( "epr12388.a1", 0x00001, 0x40000, CRC(72952a93) SHA1(b31888429ad81388a96333dc0b2c7e2223134834) )
ROM_REGION( 0x2000, REGION_USER2, 0 ) /* FD1094 decryption key */
ROM_LOAD( "317-0110.key", 0x0000, 0x2000, CRC(cd517dc6) SHA1(db95adac8c089758832897854a9cb4d611974dee) )
ROM_REGION( 0x60000, REGION_GFX1, ROMREGION_DISPOSE ) /* tiles */
ROM_LOAD( "epr12385", 0x00000, 0x20000, CRC(b8a4e7e0) SHA1(9b36f50209d45a835ded53eb045f63c649b02fc9) )
ROM_LOAD( "epr12386", 0x20000, 0x20000, CRC(25d7d779) SHA1(2de14a76a5176d5abc7e7f7f723146c620927610) )
@@ -3313,6 +3321,9 @@ ROM_START( goldnaxc )
ROM_LOAD16_BYTE( "epr12543.a2", 0x00000, 0x40000, CRC(b0df9ca4) SHA1(240f3c2998f969569d992f796e006f5ea4434e55) )
ROM_LOAD16_BYTE( "epr12542.a1", 0x00001, 0x40000, CRC(b7994d3c) SHA1(87570f23826922fca465c69df6b892c59f14e103) )
ROM_REGION( 0x2000, REGION_USER2, 0 ) /* FD1094 decryption key */
ROM_LOAD( "317-0122.key", 0x0000, 0x2000, CRC(f123c2fb) SHA1(83463a6918afde0a6f7d919e00127ffdc563efd1) )
ROM_REGION( 0x60000, REGION_GFX1, ROMREGION_DISPOSE ) /* tiles */
ROM_LOAD( "epr12385", 0x00000, 0x20000, CRC(b8a4e7e0) SHA1(9b36f50209d45a835ded53eb045f63c649b02fc9) )
ROM_LOAD( "epr12386", 0x20000, 0x20000, CRC(25d7d779) SHA1(2de14a76a5176d5abc7e7f7f723146c620927610) )
@@ -3443,6 +3454,163 @@ static MACHINE_DRIVER_START( goldnaxa )
MDRV_MACHINE_INIT(goldnaxa)
MACHINE_DRIVER_END
/*
The FD1094 sets of the 171-5797 ROM board (goldnaxb, goldnaxc): no 8751,
the program reads the I/O and sends the sound commands itself, through
the 315-5195 memory mapper. Same memory map as goldnaxa, without the
handlers that stand in for the 8751 in the work RAM.
Every frame the program writes the mapper regions again from a table of
8 (0x36f6 in goldnaxb), which only differ in the base of the sprite RAM:
0x200000 to 0x900000 in turn, and the sprite list goes to the new base.
Writes that hit no device go to the mapper: register 3 is the sound
command, 0x19 the base of the sprite RAM (region 4).
*/
static UINT8 ga_mapper_regs[0x20];
static void ga_mapper_w( offs_t offset, data16_t data, data16_t mem_mask )
{
int reg = offset & 0x1f;
if( !ACCESSING_LSB )
return;
ga_mapper_regs[reg] = data & 0xff;
if( reg == 3 ){
soundlatch_w( 0, data & 0xff );
cpu_set_irq_line( 1, 0, HOLD_LINE );
}
}
static WRITE16_HANDLER( ga_fd1094_mapper_w )
{
ga_mapper_w( offset, data, mem_mask );
}
/* the sprite RAM (2KB, mirrored in its 64KB region) where the mapper puts it */
static int ga_sprite_window( offs_t address )
{
return ((address >> 16) & 0xff) == ga_mapper_regs[0x19];
}
static READ16_HANDLER( ga_fd1094_sprite_r )
{
offs_t address = 0x200000 + offset * 2;
if( ga_sprite_window( address ) )
return sys16_spriteram[(address & 0x7ff) / 2];
return 0xffff;
}
static WRITE16_HANDLER( ga_fd1094_sprite_w )
{
offs_t address = 0x200000 + offset * 2;
if( ga_sprite_window( address ) )
COMBINE_DATA( &sys16_spriteram[(address & 0x7ff) / 2] );
else
ga_mapper_w( offset, data, mem_mask );
}
static WRITE16_HANDLER( ga_fd1094_sprite2_w )
{
ga_fd1094_sprite_w( offset + 0x1000 / 2, data, mem_mask );
}
static MEMORY_READ16_START( goldnaxa_fd1094_readmem )
{ 0x000000, 0x07ffff, MRA16_ROM },
{ 0x100000, 0x10ffff, SYS16_MRA16_TILERAM },
{ 0x110000, 0x110fff, SYS16_MRA16_TEXTRAM },
{ 0x140000, 0x140fff, SYS16_MRA16_PALETTERAM },
{ 0x1e0008, 0x1e0009, ga_hardware_collision_r },
{ 0x1f0000, 0x1f0007, ga_hardware_multiplier_r },
{ 0x1f1008, 0x1f1009, ga_hardware_collision_r },
{ 0x1f2000, 0x1f2003, SYS16_MRA16_EXTRAM },
{ 0x200000, 0x9fffff, ga_fd1094_sprite_r },
{ 0xc41002, 0xc41003, input_port_0_word_r }, /* player1 */
{ 0xc41006, 0xc41007, input_port_1_word_r }, /* player2 */
{ 0xc41000, 0xc41001, input_port_2_word_r }, /* service */
{ 0xc42002, 0xc42003, input_port_3_word_r }, /* dip1 */
{ 0xc42000, 0xc42001, input_port_4_word_r }, /* dip2 */
{ 0xffc000, 0xffffff, SYS16_MRA16_WORKINGRAM },
MEMORY_END
static MEMORY_WRITE16_START( goldnaxa_fd1094_writemem )
{ 0x000000, 0x07ffff, MWA16_ROM },
{ 0x100000, 0x10ffff, SYS16_MWA16_TILERAM, &sys16_tileram },
{ 0x110000, 0x110fff, SYS16_MWA16_TEXTRAM, &sys16_textram },
{ 0x140000, 0x140fff, SYS16_MWA16_PALETTERAM, &paletteram16 },
{ 0x1e0000, 0x1e0009, ga_hardware_collision_w },
{ 0x1f0000, 0x1f0003, ga_hardware_multiplier_w },
{ 0x1f1000, 0x1f1009, ga_hardware_collision_w },
{ 0x1f2000, 0x1f2003, SYS16_MWA16_EXTRAM, &sys16_extraram },
{ 0x200000, 0x200fff, ga_fd1094_sprite_w, &sys16_spriteram },
{ 0x201000, 0x9fffff, ga_fd1094_sprite2_w },
{ 0xc40000, 0xc40001, sys16_coinctrl_w },
{ 0xc43000, 0xc43fff, MWA16_NOP },
{ 0xfe0000, 0xfeffff, ga_fd1094_mapper_w },
{ 0xffc000, 0xffffff, SYS16_MWA16_WORKINGRAM, &sys16_workingram },
MEMORY_END
static MACHINE_INIT( goldnaxa_fd1094 ){
static int bank[16] = {
0,1,4,5,
8,9,0,0,
2,3,6,7,
10,11,0,0
};
sys16_obj_bank = bank;
/* the tile banks: the program keeps them in the work RAM, as goldnaxa */
sys16_update_proc = goldnaxe_update_proc;
memset(ga_mapper_regs, 0, sizeof(ga_mapper_regs));
ga_mapper_regs[0x19] = 0x20;
fd1094_machine_init();
}
static DRIVER_INIT( goldnaxa_fd1094 ){
fd1094_driver_init(0, REGION_USER2);
state_save_register_UINT8("goldnaxa_fd1094", 0, "mapper", ga_mapper_regs, 0x20);
}
static MACHINE_DRIVER_START( goldnaxa_fd1094 )
MDRV_IMPORT_FROM(goldnaxa)
MDRV_CPU_MODIFY("main")
MDRV_CPU_MEMORY(goldnaxa_fd1094_readmem,goldnaxa_fd1094_writemem)
MDRV_MACHINE_INIT(goldnaxa_fd1094)
MACHINE_DRIVER_END
/* goldnaxj: the FD1094 set of the 171-5704 ROM board, the memory map of goldnaxe */
static MEMORY_READ16_START( goldnaxe_fd1094_readmem )
{ 0x000000, 0x0bffff, MRA16_ROM },
{ 0x100000, 0x10ffff, SYS16_MRA16_TILERAM },
{ 0x110000, 0x110fff, SYS16_MRA16_TEXTRAM },
{ 0x140000, 0x140fff, SYS16_MRA16_PALETTERAM },
{ 0x1f0000, 0x1f0003, SYS16_MRA16_EXTRAM },
{ 0x200000, 0x9fffff, ga_fd1094_sprite_r },
{ 0xc41002, 0xc41003, input_port_0_word_r }, /* player1 */
{ 0xc41006, 0xc41007, input_port_1_word_r }, /* player2 */
{ 0xc41000, 0xc41001, input_port_2_word_r }, /* service */
{ 0xc42002, 0xc42003, input_port_3_word_r }, /* dip1 */
{ 0xc42000, 0xc42001, input_port_4_word_r }, /* dip2 */
{ 0xffc000, 0xffffff, SYS16_MRA16_WORKINGRAM },
MEMORY_END
static MEMORY_WRITE16_START( goldnaxe_fd1094_writemem )
{ 0x000000, 0x0bffff, MWA16_ROM },
{ 0x100000, 0x10ffff, SYS16_MWA16_TILERAM, &sys16_tileram },
{ 0x110000, 0x110fff, SYS16_MWA16_TEXTRAM, &sys16_textram },
{ 0x140000, 0x140fff, SYS16_MWA16_PALETTERAM, &paletteram16 },
{ 0x1f0000, 0x1f0003, SYS16_MWA16_EXTRAM, &sys16_extraram },
{ 0x200000, 0x200fff, ga_fd1094_sprite_w, &sys16_spriteram },
{ 0x201000, 0x9fffff, ga_fd1094_sprite2_w },
{ 0xc40000, 0xc40001, sys16_coinctrl_w },
{ 0xc43000, 0xc43fff, MWA16_NOP },
{ 0xfe0000, 0xfeffff, ga_fd1094_mapper_w },
{ 0xffc000, 0xffffff, SYS16_MWA16_WORKINGRAM, &sys16_workingram },
MEMORY_END
static MACHINE_DRIVER_START( goldnaxe_fd1094 )
MDRV_IMPORT_FROM(goldnaxe)
MDRV_CPU_MODIFY("main")
MDRV_CPU_MEMORY(goldnaxe_fd1094_readmem,goldnaxe_fd1094_writemem)
MDRV_MACHINE_INIT(goldnaxa_fd1094)
MACHINE_DRIVER_END
/***************************************************************************/
/* sys16B */
ROM_START( hwchamp )
@@ -5124,7 +5292,7 @@ static MEMORY_WRITE16_START( shinobi_writemem )
{ 0x440000, 0x440fff, SYS16_MWA16_SPRITERAM, &sys16_spriteram },
{ 0x840000, 0x840fff, SYS16_MWA16_PALETTERAM, &paletteram16 },
{ 0xc40000, 0xc40001, sys16_coinctrl_w },
{ 0xc43000, 0xc43001, MWA16_NOP },
{ 0xc43000, 0xc43fff, MWA16_NOP },
{ 0xfe0006, 0xfe0007, sound_command_w },
{ 0xffc000, 0xffffff, SYS16_MWA16_WORKINGRAM, &sys16_workingram },
MEMORY_END
@@ -6906,11 +7074,11 @@ GAME( 1989, fpointbl, fpoint, fpointbl, fpoint, fpointbl, ROT0, "bootleg"
GAME( 1989, fpointbj, fpoint, fpointbl, fpointbj, fpointbl, ROT0, "bootleg", "Flash Point (Japan, bootleg)" )
GAME( 1989, goldnaxe, 0, goldnaxe, goldnaxe, 0, ROT0, "Sega", "Golden Axe (Version 1)" )
GAMEX(1989, goldnaxj, goldnaxe, goldnaxe, goldnaxe, 0, ROT0, "Sega", "Golden Axe (Version 1, Japan)", GAME_NOT_WORKING )
GAME( 1989, goldnaxj, goldnaxe, goldnaxe_fd1094, goldnaxe, goldnaxa_fd1094, ROT0, "Sega", "Golden Axe (set 4, Japan) (FD1094 317-0121)" )
GAMEX(1989, goldnabl, goldnaxe, goldnaxe, goldnaxe, goldnabl, ROT0, "bootleg", "Golden Axe (bootleg)", GAME_NOT_WORKING )
GAME( 1989, goldnaxa, goldnaxe, goldnaxa, goldnaxe, 0, ROT0, "Sega", "Golden Axe (set 6, US) (8751 317-123A)" )
GAMEX(1989, goldnaxb, goldnaxe, goldnaxa, goldnaxe, 0, ROT0, "Sega", "Golden Axe (Version 2 317-0110)", GAME_NOT_WORKING )
GAMEX(1989, goldnaxc, goldnaxe, goldnaxa, goldnaxe, 0, ROT0, "Sega", "Golden Axe (Version 2 317-0122)", GAME_NOT_WORKING )
GAME( 1989, goldnaxb, goldnaxe, goldnaxa_fd1094, goldnaxe, goldnaxa_fd1094, ROT0, "Sega", "Golden Axe (set 1, World) (FD1094 317-0110)" )
GAME( 1989, goldnaxc, goldnaxe, goldnaxa_fd1094, goldnaxe, goldnaxa_fd1094, ROT0, "Sega", "Golden Axe (set 5, US) (FD1094 317-0122)" )
GAME( 1987, hwchamp, 0, hwchamp, hwchamp, 0, ROT0, "Sega", "Heavyweight Champ" )
GAMEX(19??, mvp, 0, s16dummy, s16dummy, 0, ROT0, "Sega", "MVP", GAME_NOT_WORKING )
GAMEX(1988, passsht, 0, passsht, passsht, 0, ROT270, "Sega", "Passing Shot (2 Players)", GAME_NOT_WORKING )
src/mame2003/frontend_list.h
+3 -3
View File
@@ -782,10 +782,10 @@ struct fe_driver fe_drivers[] = {
{ "goldmedl", 3 },
{ "goldnabl", 1 },
{ "goldnaxa", 1 },
{ "goldnaxb", 1 },
{ "goldnaxc", 1 },
{ "goldnaxb", 0 },
{ "goldnaxc", 0 },
{ "goldnaxe", 1 },
{ "goldnaxj", 1 },
{ "goldnaxj", 0 },
{ "gondo", 3 },
{ "gorf", 1 },
{ "gorfpgm1", 1 },