Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 17:30:55 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

segas16b.cpp: Replace goldnaxe2 317-0122 i8751 bad dump with working redump from undamaged chip. Remove MCU HLE code. [anonymous, digshadow]

Browse Source
This commit is contained in:
Lord-Nightmare 2017-07-04 14:37:27 -04:00
parent b62aa7b1b7
commit d9530078dd
2 changed files with 2 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
src/mame/drivers/segas16b.cpp
View File

@ -1405,41 +1405,6 @@ void segas16b_state::ddux_i8751_sim()
}
}
//-------------------------------------------------
// goldnaxe_i8751_sim - simulate the I8751
// from Golden Axe
//-------------------------------------------------
void segas16b_state::goldnaxe_i8751_sim()
{
// signal a VBLANK to the main CPU
m_maincpu->set_input_line(4, HOLD_LINE);
// they periodically clear the data at 2cd8,2cda,2cdc,2cde and expect the MCU to fill it in
if (m_workram[0x2cd8/2] == 0 && m_workram[0x2cda/2] == 0 && m_workram[0x2cdc/2] == 0 && m_workram[0x2cde/2] == 0)
{
m_workram[0x2cd8/2] = 0x048c;
m_workram[0x2cda/2] = 0x159d;
m_workram[0x2cdc/2] = 0x26ae;
m_workram[0x2cde/2] = 0x37bf;
}
// process any new sound data
uint16_t temp = m_workram[0x2cfc/2];
if ((temp & 0xff00) != 0x0000)
{
address_space &space = m_maincpu->space(AS_PROGRAM);
m_mapper->write(space, 0x03, temp >> 8);
m_workram[0x2cfc/2] = temp & 0x00ff;
}
// read inputs
m_workram[0x2cd0/2] = (ioport("P1")->read() << 8) | ioport("P2")->read();
m_workram[0x2c96/2] = ioport("SERVICE")->read() << 8;
}
//-------------------------------------------------
// tturf_i8751_sim - simulate the I8751
// from Tough Turf
@ -6475,15 +6440,7 @@ ROM_START( goldnaxe2 )
ROM_LOAD( "mpr-12384.a11", 0x10000, 0x20000, CRC(6218d8e7) SHA1(5a745c750efb4a61716f99befb7ed14cc84e9973) )
ROM_REGION( 0x1000, "mcu", 0 ) // Intel i8751 protection MCU
/* NOT CURRENTLY USED
this chip was faulty, the internal checksum routine fails. actual code looks like it should be 99.99% the
same as the 'goldnaxe' set but unused areas have different garbage fill data, so finding the bad bits is
difficult.
Calculated checksum: 5F8F
 File checksum: 5E8F */
ROM_LOAD( "317-0112.c2", 0x00000, 0x1000, BAD_DUMP CRC(d8f2f1c0) SHA1(04594ed5558af63cde62de6cc4020b35b8a5889e) )
ROM_LOAD( "317-0112.c2", 0x00000, 0x1000, CRC(bda31044) SHA1(79ba41ac0768c1a55faad2f768120f15bcde4b90) )
ROM_END
//*************************************************************************************************************************
@ -8737,17 +8694,6 @@ DRIVER_INIT_MEMBER(segas16b_state,exctleag_5358)
m_custom_io_r = read16_delegate(FUNC(segas16b_state::sdi_custom_io_r), this);
}
DRIVER_INIT_MEMBER(segas16b_state,goldnaxe_5704)
{
DRIVER_INIT_CALL(generic_5704);
m_i8751_vblank_hook = i8751_sim_delegate(&segas16b_state::goldnaxe_i8751_sim, this);
static const uint8_t memory_control_5704[0x10] =
{ 0x02,0x00, 0x02,0x08, 0x00,0x1f, 0x00,0xff, 0x00,0x20, 0x01,0x10, 0x00,0x14, 0x00,0xc4 };
m_i8751_initial_config = memory_control_5704;
}
DRIVER_INIT_MEMBER(segas16b_state,hwchamp_5521)
{
DRIVER_INIT_CALL(generic_5521);
@ -8892,7 +8838,7 @@ GAME( 1989, goldnaxe, 0, system16b_i8751_5797,goldnaxe, segas16b_state,
GAME( 1989, goldnaxeu, goldnaxe, system16b_fd1094_5797,goldnaxe,segas16b_state,generic_5797, ROT0, "Sega", "Golden Axe (set 5, US) (FD1094 317-0122)", 0 )
GAME( 1989, goldnaxej, goldnaxe, system16b_fd1094, goldnaxe, segas16b_state,generic_5704, ROT0, "Sega", "Golden Axe (set 4, Japan) (FD1094 317-0121)", 0 )
GAME( 1989, goldnaxe3, goldnaxe, system16b_fd1094, goldnaxe, segas16b_state,generic_5704, ROT0, "Sega", "Golden Axe (set 3, World) (FD1094 317-0120)", 0)
GAME( 1989, goldnaxe2, goldnaxe, system16b_i8751, goldnaxe, segas16b_state,goldnaxe_5704, ROT0, "Sega", "Golden Axe (set 2, US) (8751 317-0112)", 0 )
GAME( 1989, goldnaxe2, goldnaxe, system16b_i8751, goldnaxe, segas16b_state,generic_5704, ROT0, "Sega", "Golden Axe (set 2, US) (8751 317-0112)", 0 )
GAME( 1989, goldnaxe1, goldnaxe, system16b_fd1094_5797,goldnaxe,segas16b_state,generic_5797, ROT0, "Sega", "Golden Axe (set 1, World) (FD1094 317-0110)", 0 )
GAME( 1987, hwchamp, 0, system16b, hwchamp, segas16b_state,hwchamp_5521, ROT0, "Sega", "Heavyweight Champ", 0 )

2
src/mame/includes/segas16b.h
View File

@ -115,7 +115,6 @@ public:
DECLARE_DRIVER_INIT(ddux_5704);
DECLARE_DRIVER_INIT(snapper);
DECLARE_DRIVER_INIT(shinobi4_5521);
DECLARE_DRIVER_INIT(goldnaxe_5704);
DECLARE_DRIVER_INIT(defense_5358_small);
DECLARE_DRIVER_INIT(sjryuko_5358_small);
DECLARE_DRIVER_INIT(exctleag_5358);
@ -175,7 +174,6 @@ protected:
void altbeasj_i8751_sim();
void altbeas5_i8751_sim();
void ddux_i8751_sim();
void goldnaxe_i8751_sim();
void tturf_i8751_sim();
void wb3_i8751_sim();