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workaround for raster problems in neocdz, let's call it working for now, I only know of one game which fails to load, although the whole lot still needs some polish (nw)

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NeoGeo CDZ [FinalBurn Alpha / Barry Harris, David Haywood]
This commit is contained in:
David Haywood 2012-12-07 16:57:41 +00:00
parent bd6d92caa9
commit 5fabbe5209
2 changed files with 63 additions and 41 deletions
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103
src/mess/drivers/ng_aes.c
View File

@ -39,8 +39,9 @@
- NeoCDZ runs, the original NeoCD does not
- Might think the tray is open? (check)
- Some unknown / unhandled CD commands, code is still a bit messy
- Games using Raster Effects are broken, even non-IRQ based ones like mosyougi
- Are we overloading the CPU with interrupts from the CDC, incorrect masking? or something else?
- CDDA continues to play during loading, should stop it
- Games using Raster Effects are broken without a kludge
- CPU gets overloaded with IRQs from the timer callback...
- Double Dragon doesn't load, it erases the IRQ table
- might need better handling of the Vector Table Mapping, or better interrupts (see point above)
- Softlist are based on an old Tosec set and should be updated to the TruRip set once we can convert CCD
@ -133,7 +134,7 @@ public:
DECLARE_READ16_MEMBER(aes_in0_r);
DECLARE_READ16_MEMBER(aes_in1_r);
DECLARE_READ16_MEMBER(aes_in2_r);
DECLARE_DRIVER_INIT(neogeo);
DECLARE_MACHINE_START(neocd);
DECLARE_MACHINE_START(neogeo);
DECLARE_MACHINE_RESET(neogeo);
@ -171,7 +172,13 @@ public:
UINT8 nTransferWriteEnable;
address_space* curr_space;
bool prohibit_cdc_irq; // hack?
DECLARE_DRIVER_INIT(neogeo);
DECLARE_DRIVER_INIT(neocdz);
DECLARE_DRIVER_INIT(neocdzj);
};
@ -472,6 +479,14 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
{
// not a good idea, causes hangs
// m_tempcdc->NeoCDCommsReset();
// I doubt this is correct either, but we need something to stop
// the interrupts during gameplay and I'm not sure what...
prohibit_cdc_irq = true;
}
else
{
prohibit_cdc_irq = false;
}
}
break;
@ -1073,10 +1088,6 @@ MACHINE_START_MEMBER(ng_aes_state,neogeo)
MACHINE_START_MEMBER(ng_aes_state,neocd)
{
// UINT8* ROM = machine().root_device().memregion("mainbios")->base();
// UINT8* RAM = machine().root_device().memregion("maincpu")->base();
// UINT8* Z80bios = machine().root_device().memregion("audiobios")->base();
// int x;
m_has_audio_banking = false;
m_is_cartsys = false;
@ -1093,19 +1104,12 @@ MACHINE_START_MEMBER(ng_aes_state,neocd)
m_memcard_data = auto_alloc_array_clear(machine(), UINT8, 0x2000);
save_pointer(NAME(m_memcard_data), 0x2000);
// copy initial 68k vectors into RAM
// memcpy(RAM,ROM,0x80);
// for custom vectors
machine().device("maincpu")->execute().set_irq_acknowledge_callback(neocd_int_callback);
neogeo_set_main_cpu_vector_table_source(machine(), 0); // default to the BIOS vectors
m_tempcdc->reset_cd();
}
@ -1564,23 +1568,26 @@ void ng_aes_state::NeoCDIRQUpdate(UINT8 byteValue)
nIRQAcknowledge |= (byteValue & 0x38);
if ((nIRQAcknowledge & 0x08) == 0) {
nNeoCDIRQVector = 0x17;
nNeoCDIRQVectorAck = 1;
machine().device("maincpu")->execute().set_input_line(4, HOLD_LINE);
return;
}
if ((nIRQAcknowledge & 0x10) == 0) {
nNeoCDIRQVector = 0x16;
nNeoCDIRQVectorAck = 1;
machine().device("maincpu")->execute().set_input_line(4, HOLD_LINE);
return;
}
if ((nIRQAcknowledge & 0x20) == 0) {
nNeoCDIRQVector = 0x15;
nNeoCDIRQVectorAck = 1;
machine().device("maincpu")->execute().set_input_line(4, HOLD_LINE);
return;
if (!prohibit_cdc_irq)
{
if ((nIRQAcknowledge & 0x08) == 0) {
nNeoCDIRQVector = 0x17;
nNeoCDIRQVectorAck = 1;
machine().device("maincpu")->execute().set_input_line(4, HOLD_LINE);
return;
}
if ((nIRQAcknowledge & 0x10) == 0) {
nNeoCDIRQVector = 0x16;
nNeoCDIRQVectorAck = 1;
machine().device("maincpu")->execute().set_input_line(4, HOLD_LINE);
return;
}
if ((nIRQAcknowledge & 0x20) == 0) {
nNeoCDIRQVector = 0x15;
nNeoCDIRQVectorAck = 1;
machine().device("maincpu")->execute().set_input_line(4, HOLD_LINE);
return;
}
}
}
@ -1622,10 +1629,6 @@ MACHINE_CONFIG_END
*
*************************************/
DRIVER_INIT_MEMBER(ng_aes_state,neogeo)
{
}
ROM_START( aes )
ROM_REGION16_BE( 0x80000, "mainbios", 0 )
@ -1707,9 +1710,6 @@ ROM_START( neocdz )
ROM_REGION( 0x20000, "fixed", ROMREGION_ERASEFF )
/* 128KB of Text Tile RAM */
ROM_REGION( 0x20000, "audiobios", ROMREGION_ERASEFF )
ROM_REGION( 0x20000, "fixedbios", ROMREGION_ERASEFF )
@ -1717,8 +1717,29 @@ ROM_START( neocdz )
ROM_LOAD( "000-lo.lo", 0x00000, 0x20000, CRC(5a86cff2) SHA1(5992277debadeb64d1c1c64b0a92d9293eaf7e4a) )
ROM_END
#define rom_neocdzj rom_neocdz
DRIVER_INIT_MEMBER(ng_aes_state,neogeo)
{
}
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
CONS( 1990, aes, 0, 0, aes, aes, ng_aes_state, neogeo, "SNK", "Neo-Geo AES", 0)
CONS( 1996, neocdz, 0, 0, neocd, aes, ng_aes_state, neogeo, "SNK", "Neo-Geo CDZ", GAME_NOT_WORKING ) // the CDZ is the newer slot-loading model, faster drive etc.
CONS( 1994, neocd, neocdz, 0, neocd, aes, ng_aes_state, neogeo, "SNK", "Neo-Geo CD", GAME_NOT_WORKING ) // older Top Loading model, ignores disc protections?
DRIVER_INIT_MEMBER(ng_aes_state,neocdz)
{
NeoSystem = NEOCD_REGION_US;
}
DRIVER_INIT_MEMBER(ng_aes_state,neocdzj)
{
NeoSystem = NEOCD_REGION_JAPAN;
}
CONS( 1996, neocdz, 0, 0, neocd, aes, ng_aes_state, neocdz, "SNK", "Neo-Geo CDZ (US)", 0 ) // the CDZ is the newer model
CONS( 1996, neocdzj, neocdz, 0, neocd, aes, ng_aes_state, neocdzj, "SNK", "Neo-Geo CDZ (Japan)", 0 )
CONS( 1994, neocd, neocdz, 0, neocd, aes, ng_aes_state, neogeo, "SNK", "Neo-Geo CD", GAME_NOT_WORKING ) // older model, ignores disc protections?

1
src/mess/mess.lst
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@ -328,6 +328,7 @@ ngpc // NeoGeo Pocket Color
aes // NeoGeo AES
neocd // NeoGeo CD
neocdz // NeoGeo CDZ
neocdzj //
// Philips
cdimono1 // Philips CD-i (Mono-I board)