mirror of
https://github.com/holub/mame
synced 2025-04-21 07:52:35 +03:00
more Ncd notes etc. (nw)
This commit is contained in:
David Haywood
parent
a83d4b1718
commit
d1267abb57
@ -889,7 +889,7 @@ WRITE16_MEMBER(neogeo_state::system_control_w)
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neogeo_set_main_cpu_vector_table_source(machine(), 1);
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}
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#endif
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printf("NeoCD: write to regular address? %d\n", bit); // what IS going on with "neocdz doubledr" and why do games write here if it's hooked up to nothing?
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printf("NeoCD: write to regular vector change address? %d\n", bit); // what IS going on with "neocdz doubledr" and why do games write here if it's hooked up to nothing?
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}
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if (m_has_audio_banking) set_audio_cpu_rom_source(space, bit); /* this is a guess */
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break;
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@ -1161,6 +1161,7 @@ ADDRESS_MAP_END
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/*************************************
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*
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* Audio CPU memory handlers
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@ -1408,7 +1409,7 @@ DEVICE_IMAGE_LOAD( neo_cartridge )
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*
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*************************************/
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static MACHINE_CONFIG_START( neogeo, neogeo_state )
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MACHINE_CONFIG_START( neogeo_base, neogeo_state )
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/* basic machine hardware */
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MCFG_CPU_ADD("maincpu", M68000, NEOGEO_MAIN_CPU_CLOCK)
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@ -1417,12 +1418,7 @@ static MACHINE_CONFIG_START( neogeo, neogeo_state )
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MCFG_CPU_ADD("audiocpu", Z80, NEOGEO_AUDIO_CPU_CLOCK)
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MCFG_CPU_PROGRAM_MAP(audio_map)
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MCFG_CPU_IO_MAP(audio_io_map)
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MCFG_WATCHDOG_TIME_INIT(attotime::from_usec(128762))
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MCFG_NVRAM_ADD_0FILL("saveram")
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MCFG_MEMCARD_HANDLER(neogeo)
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/* video hardware */
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MCFG_DEFAULT_LAYOUT(layout_neogeo)
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@ -1444,10 +1440,14 @@ static MACHINE_CONFIG_START( neogeo, neogeo_state )
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MCFG_UPD4990A_ADD("upd4990a")
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( mvs, neogeo )
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static MACHINE_CONFIG_DERIVED( neogeo, neogeo_base )
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MCFG_WATCHDOG_TIME_INIT(attotime::from_usec(128762))
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MCFG_NVRAM_ADD_0FILL("saveram")
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MCFG_MEMCARD_HANDLER(neogeo)
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MACHINE_CONFIG_END
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static MACHINE_CONFIG_DERIVED( mvs, neogeo )
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MCFG_CARTSLOT_ADD("cart")
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MCFG_CARTSLOT_LOAD(neo_cartridge)
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MCFG_CARTSLOT_INTERFACE("neo_cart")
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@ -236,6 +236,7 @@ public:
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/*----------- defined in drivers/neogeo.c -----------*/
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MACHINE_CONFIG_EXTERN( neogeo_base );
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void neogeo_set_display_position_interrupt_control(running_machine &machine, UINT16 data);
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void neogeo_set_display_counter_msb(address_space &space, UINT16 data);
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void neogeo_set_display_counter_lsb(address_space &space, UINT16 data);
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@ -21,11 +21,33 @@
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Current status:
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- Cartridges run.
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- Riding Hero runs in slow-mo (probably related to comms HW / IO port handling)
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ToDo :
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- Change input code to allow selection of the mahjong panel in PORT_CATEGORY.
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- Clean up code, to reduce duplication of MAME source
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Neo-Geo CD hardware
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Thanks to:
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* The FBA team (Barry Harris) for much of the CDC / CDD code and system details.
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( http://www.barryharris.me.uk/ )
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* Mirko Buffoni for a commented disassembly of the NeoCD bios rom.
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Current status:
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- NeoCDZ runs, the original NeoCD does not
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- Might think the tray is open? (check)
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- CDDA doesn't play
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- Some unknown / unhandled CD commands, code is still a bit messy
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- Games using Raster Effects are broken, even non-IRQ based ones like mosyougi
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- Are we overloading the CPU with interrupts from the CDC, incorrect masking? or something else?
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- Double Dragon doesn't load, it erases the IRQ table
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- might need better handling of the Vector Table Mapping, or better interrupts (see point above)
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- Softlist are based on an old Tosec set and should be updated to the TruRip set once we can convert CCD
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without throwing away gap data etc.
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- Backup RAM isn't saved?
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****************************************************************************/
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#include "emu.h"
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@ -93,7 +115,7 @@ public:
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void NeoCDDoDMA();
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void NeoCDDoDMA(address_space& curr_space);
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void set_DMA_regs(int offset, UINT16 wordValue);
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UINT8 *m_memcard_data;
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@ -131,29 +153,13 @@ public:
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INT32 NeoCDDMAValue2;
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INT32 NeoCDDMACount;
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INT32 NeoCDDMAMode;
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void SekWriteWord(UINT32 a, UINT16 d);
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void SekWriteByte(UINT32 a, UINT8 d);
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UINT32 SekReadByte(UINT32 a);
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UINT32 SekReadWord(UINT32 a);
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UINT8 nTransferWriteEnable;
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address_space* curr_space;
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};
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#define LOG_VIDEO_SYSTEM (0)
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#define LOG_CPU_COMM (0)
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#define LOG_MAIN_CPU_BANKING (1)
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#define LOG_AUDIO_CPU_BANKING (1)
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#define NEOCD_AREA_SPR 0
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#define NEOCD_AREA_PCM 1
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#define NEOCD_AREA_AUDIO 4
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#define NEOCD_AREA_FIX 5
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/*************************************
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*
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* Global variables
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@ -175,24 +181,6 @@ public:
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/*************************************
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*
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* Audio CPU interrupt generation
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*
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*************************************/
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static void audio_cpu_irq(device_t *device, int assert)
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{
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neogeo_state *state = device->machine().driver_data<neogeo_state>();
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state->m_audiocpu->set_input_line(0, assert ? ASSERT_LINE : CLEAR_LINE);
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}
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@ -251,7 +239,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_memcard_w)
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}
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}
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static MEMCARD_HANDLER( neogeo )
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static MEMCARD_HANDLER( neogeo_aes )
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{
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ng_aes_state *state = machine.driver_data<ng_aes_state>();
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switch (action)
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@ -372,7 +360,7 @@ READ16_MEMBER(ng_aes_state::neocd_control_r)
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// LC8951 registers
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case 0x0100:
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return m_tempcdc->segacd_cdc_mode_address_r(*curr_space, 0, 0xffff);
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return m_tempcdc->segacd_cdc_mode_address_r(space, 0, 0xffff);
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case 0x0102:
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return m_tempcdc->CDC_Reg_r();
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@ -418,7 +406,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
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// DMA controller
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case 0x0060:
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if (byteValue & 0x40) {
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NeoCDDoDMA();
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NeoCDDoDMA(space);
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}
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break;
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@ -449,7 +437,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
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// LC8951 registers
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case 0x0100:
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m_tempcdc->segacd_cdc_mode_address_w(*curr_space, 0, byteValue, 0xffff);
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m_tempcdc->segacd_cdc_mode_address_w(space, 0, byteValue, 0xffff);
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break;
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case 0x0102:
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m_tempcdc->CDC_Reg_w(byteValue);
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@ -468,7 +456,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
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break;
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case 0x0126:
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// bprintf(PRINT_NORMAL, _T(" - NGCD Z80 BUSREQ -> 1 (PC: 0x%06X)\n"), SekGetPC(-1));
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curr_space->machine().scheduler().synchronize();
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space.machine().scheduler().synchronize();
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m_audiocpu->set_input_line(INPUT_LINE_HALT, ASSERT_LINE);
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break;
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case 0x0128:
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@ -484,7 +472,7 @@ WRITE16_MEMBER(ng_aes_state::neocd_control_w)
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break;
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case 0x0146:
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// bprintf(PRINT_NORMAL, _T(" - NGCD Z80 BUSREQ -> 0 (PC: 0x%06X)\n"), SekGetPC(-1));
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curr_space->machine().scheduler().synchronize();
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space.machine().scheduler().synchronize();
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m_audiocpu->set_input_line(INPUT_LINE_HALT, CLEAR_LINE);
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break;
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case 0x0148:
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@ -654,31 +642,6 @@ void ng_aes_state::set_DMA_regs(int offset, UINT16 wordValue)
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void ng_aes_state::SekWriteWord(UINT32 a, UINT16 d)
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{
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// printf("write word %08x %04x\n", a, d);
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curr_space->write_word(a,d);
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}
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void ng_aes_state::SekWriteByte(UINT32 a, UINT8 d)
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{
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// printf("write byte %08x %02x\n", a, d);
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curr_space->write_byte(a,d);
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}
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UINT32 ng_aes_state::SekReadByte(UINT32 a)
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{
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// printf("read byte %08x\n", a);
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return curr_space->read_byte(a);
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}
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UINT32 ng_aes_state::SekReadWord(UINT32 a)
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{
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// printf("read WORD %08x\n", a);
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return curr_space->read_word(a);
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}
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static INT32 SekIdle(INT32 nCycles)
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@ -734,7 +697,7 @@ static INT32 SekIdle(INT32 nCycles)
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*/
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void ng_aes_state::NeoCDDoDMA()
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void ng_aes_state::NeoCDDoDMA(address_space& curr_space)
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{
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// The LC8953 chip has a programmable DMA controller, which is not properly emulated.
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@ -765,10 +728,10 @@ void ng_aes_state::NeoCDDoDMA()
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SekIdle(NeoCDDMACount * 4);
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while (NeoCDDMACount--) {
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SekWriteWord(NeoCDDMAAddress1 + 0, NeoCDDMAAddress1 >> 24);
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SekWriteWord(NeoCDDMAAddress1 + 2, NeoCDDMAAddress1 >> 16);
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SekWriteWord(NeoCDDMAAddress1 + 4, NeoCDDMAAddress1 >> 8);
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SekWriteWord(NeoCDDMAAddress1 + 6, NeoCDDMAAddress1 >> 0);
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curr_space.write_word(NeoCDDMAAddress1 + 0, NeoCDDMAAddress1 >> 24);
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curr_space.write_word(NeoCDDMAAddress1 + 2, NeoCDDMAAddress1 >> 16);
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curr_space.write_word(NeoCDDMAAddress1 + 4, NeoCDDMAAddress1 >> 8);
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curr_space.write_word(NeoCDDMAAddress1 + 6, NeoCDDMAAddress1 >> 0);
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NeoCDDMAAddress1 += 8;
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}
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@ -791,8 +754,8 @@ void ng_aes_state::NeoCDDoDMA()
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SekIdle(NeoCDDMACount * 1);
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while (NeoCDDMACount--) {
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SekWriteWord(NeoCDDMAAddress2 + 0, SekReadByte(NeoCDDMAAddress1 + 0));
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SekWriteWord(NeoCDDMAAddress2 + 2, SekReadByte(NeoCDDMAAddress1 + 1));
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curr_space.write_word(NeoCDDMAAddress2 + 0, curr_space.read_byte(NeoCDDMAAddress1 + 0));
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curr_space.write_word(NeoCDDMAAddress2 + 2, curr_space.read_byte(NeoCDDMAAddress1 + 1));
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NeoCDDMAAddress1 += 2;
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NeoCDDMAAddress2 += 4;
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}
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@ -821,8 +784,8 @@ void ng_aes_state::NeoCDDoDMA()
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SekIdle(NeoCDDMACount * 4);
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while (NeoCDDMACount--) {
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SekWriteByte(NeoCDDMAAddress1 + 0, data[0]);
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SekWriteByte(NeoCDDMAAddress1 + 2, data[1]);
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curr_space.write_byte(NeoCDDMAAddress1 + 0, data[0]);
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curr_space.write_byte(NeoCDDMAAddress1 + 2, data[1]);
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NeoCDDMAAddress1 += 4;
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data += 2;
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}
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@ -860,7 +823,7 @@ void ng_aes_state::NeoCDDoDMA()
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SekIdle(NeoCDDMACount * 1);
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while (NeoCDDMACount--) {
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SekWriteWord(NeoCDDMAAddress2, SekReadWord(NeoCDDMAAddress1));
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curr_space.write_word(NeoCDDMAAddress2, curr_space.read_word(NeoCDDMAAddress1));
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NeoCDDMAAddress1 += 2;
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NeoCDDMAAddress2 += 2;
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}
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@ -890,8 +853,8 @@ if (NeoCDDMAAddress2 == 0x0800) {
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SekIdle(NeoCDDMACount * 2);
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while (NeoCDDMACount--) {
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SekWriteWord(NeoCDDMAAddress1 + 0, NeoCDDMAAddress1 >> 16);
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SekWriteWord(NeoCDDMAAddress1 + 2, NeoCDDMAAddress1 >> 0);
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curr_space.write_word(NeoCDDMAAddress1 + 0, NeoCDDMAAddress1 >> 16);
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curr_space.write_word(NeoCDDMAAddress1 + 2, NeoCDDMAAddress1 >> 0);
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NeoCDDMAAddress1 += 4;
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}
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@ -919,8 +882,8 @@ if (NeoCDDMAAddress2 == 0x0800) {
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SekIdle(NeoCDDMACount * 4);
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while (NeoCDDMACount--) {
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SekWriteByte(NeoCDDMAAddress1 + 0, data[0]);
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SekWriteByte(NeoCDDMAAddress1 + 1, data[1]);
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curr_space.write_byte(NeoCDDMAAddress1 + 0, data[0]);
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curr_space.write_byte(NeoCDDMAAddress1 + 1, data[1]);
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NeoCDDMAAddress1 += 2;
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data += 2;
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}
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@ -958,7 +921,7 @@ if (NeoCDDMAAddress2 == 0x0800) {
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SekIdle(NeoCDDMACount * 1);
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while (NeoCDDMACount--) {
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SekWriteWord(NeoCDDMAAddress1, NeoCDDMAValue1);
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curr_space.write_word(NeoCDDMAAddress1, NeoCDDMAValue1);
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NeoCDDMAAddress1 += 2;
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}
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@ -1204,7 +1167,6 @@ MACHINE_RESET_MEMBER(ng_aes_state,neogeo)
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YM2610ADPCMAROM = memregion("ymsnd")->base();
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NeoZ80ROMActive = memregion("audiocpu")->base();
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NeoTextRAM = memregion("fixed")->base();
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curr_space = &machine().device("maincpu")->memory().space(AS_PROGRAM);
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}
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MACHINE_RESET_MEMBER(ng_aes_state,neocd)
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@ -1226,7 +1188,7 @@ MACHINE_RESET_MEMBER(ng_aes_state,neocd)
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*
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*************************************/
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static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, ng_aes_state )
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static ADDRESS_MAP_START( aes_main_map, AS_PROGRAM, 16, ng_aes_state )
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AM_RANGE(0x000000, 0x00007f) AM_ROMBANK(NEOGEO_BANK_VECTORS)
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AM_RANGE(0x000080, 0x0fffff) AM_ROM
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AM_RANGE(0x100000, 0x10ffff) AM_MIRROR(0x0f0000) AM_RAM
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@ -1282,20 +1244,6 @@ static ADDRESS_MAP_START( neocd_main_map, AS_PROGRAM, 16, ng_aes_state )
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ADDRESS_MAP_END
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/*************************************
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*
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* Audio CPU memory handlers
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*
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*************************************/
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static ADDRESS_MAP_START( audio_map, AS_PROGRAM, 8, ng_aes_state )
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AM_RANGE(0x0000, 0x7fff) AM_ROMBANK(NEOGEO_BANK_AUDIO_CPU_MAIN_BANK)
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AM_RANGE(0x8000, 0xbfff) AM_ROMBANK(NEOGEO_BANK_AUDIO_CPU_CART_BANK3)
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AM_RANGE(0xc000, 0xdfff) AM_ROMBANK(NEOGEO_BANK_AUDIO_CPU_CART_BANK2)
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AM_RANGE(0xe000, 0xefff) AM_ROMBANK(NEOGEO_BANK_AUDIO_CPU_CART_BANK1)
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AM_RANGE(0xf000, 0xf7ff) AM_ROMBANK(NEOGEO_BANK_AUDIO_CPU_CART_BANK0)
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AM_RANGE(0xf800, 0xffff) AM_RAM
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ADDRESS_MAP_END
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@ -1305,21 +1253,6 @@ ADDRESS_MAP_END
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*
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*************************************/
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static ADDRESS_MAP_START( audio_io_map, AS_IO, 8, ng_aes_state )
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/*AM_RANGE(0x00, 0x00) AM_MIRROR(0xff00) AM_READWRITE(audio_command_r, audio_cpu_clear_nmi_w);*/ /* may not and NMI clear */
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AM_RANGE(0x00, 0x00) AM_MIRROR(0xff00) AM_READ(audio_command_r)
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AM_RANGE(0x04, 0x07) AM_MIRROR(0xff00) AM_DEVREADWRITE_LEGACY("ymsnd", ym2610_r, ym2610_w)
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AM_RANGE(0x08, 0x08) AM_MIRROR(0xff00) /* write - NMI enable / acknowledge? (the data written doesn't matter) */
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AM_RANGE(0x08, 0x08) AM_MIRROR(0xfff0) AM_MASK(0xfff0) AM_READ(audio_cpu_bank_select_f000_f7ff_r)
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AM_RANGE(0x09, 0x09) AM_MIRROR(0xfff0) AM_MASK(0xfff0) AM_READ(audio_cpu_bank_select_e000_efff_r)
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AM_RANGE(0x0a, 0x0a) AM_MIRROR(0xfff0) AM_MASK(0xfff0) AM_READ(audio_cpu_bank_select_c000_dfff_r)
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AM_RANGE(0x0b, 0x0b) AM_MIRROR(0xfff0) AM_MASK(0xfff0) AM_READ(audio_cpu_bank_select_8000_bfff_r)
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AM_RANGE(0x0c, 0x0c) AM_MIRROR(0xff00) AM_WRITE(audio_result_w)
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AM_RANGE(0x18, 0x18) AM_MIRROR(0xff00) /* write - NMI disable? (the data written doesn't matter) */
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||||
ADDRESS_MAP_END
|
||||
|
||||
|
||||
|
||||
|
||||
static ADDRESS_MAP_START( neocd_audio_map, AS_PROGRAM, 8, ng_aes_state )
|
||||
AM_RANGE(0x0000, 0xffff) AM_RAM AM_REGION("audiocpu", 0x00000)
|
||||
@ -1346,19 +1279,6 @@ static ADDRESS_MAP_START( neocd_audio_io_map, AS_IO, 8, ng_aes_state )
|
||||
ADDRESS_MAP_END
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Audio interface
|
||||
*
|
||||
*************************************/
|
||||
|
||||
static const ym2610_interface ym2610_config =
|
||||
{
|
||||
audio_cpu_irq
|
||||
};
|
||||
|
||||
|
||||
|
||||
/*************************************
|
||||
*
|
||||
* Standard Neo-Geo DIPs and
|
||||
@ -1599,48 +1519,16 @@ INPUT_PORTS_END
|
||||
*
|
||||
*************************************/
|
||||
|
||||
static MACHINE_CONFIG_START( neogeo, ng_aes_state )
|
||||
|
||||
/* basic machine hardware */
|
||||
MCFG_CPU_ADD("maincpu", M68000, NEOGEO_MAIN_CPU_CLOCK)
|
||||
MCFG_CPU_PROGRAM_MAP(main_map)
|
||||
|
||||
MCFG_CPU_ADD("audiocpu", Z80, NEOGEO_AUDIO_CPU_CLOCK)
|
||||
MCFG_CPU_PROGRAM_MAP(audio_map)
|
||||
MCFG_CPU_IO_MAP(audio_io_map)
|
||||
static MACHINE_CONFIG_DERIVED_CLASS( aes, neogeo_base, ng_aes_state )
|
||||
MCFG_CPU_MODIFY("maincpu")
|
||||
MCFG_CPU_PROGRAM_MAP(aes_main_map) // some different input handling, probably also responsible for Riding Hero not running properly
|
||||
|
||||
MCFG_MEMCARD_HANDLER(neogeo_aes)
|
||||
|
||||
MCFG_MACHINE_START_OVERRIDE(ng_aes_state, neogeo)
|
||||
MCFG_MACHINE_RESET_OVERRIDE(ng_aes_state, neogeo)
|
||||
|
||||
// temporary until things are cleaned up
|
||||
MCFG_DEVICE_ADD("tempcdc", LC89510_TEMP, 0) // cd controller
|
||||
MCFG_SEGACD_HACK_SET_NEOCD
|
||||
|
||||
/* video hardware */
|
||||
MCFG_DEFAULT_LAYOUT(layout_neogeo)
|
||||
|
||||
MCFG_SCREEN_ADD("screen", RASTER)
|
||||
MCFG_SCREEN_RAW_PARAMS(NEOGEO_PIXEL_CLOCK, NEOGEO_HTOTAL, NEOGEO_HBEND, NEOGEO_HBSTART, NEOGEO_VTOTAL, NEOGEO_VBEND, NEOGEO_VBSTART)
|
||||
MCFG_SCREEN_UPDATE_DRIVER(ng_aes_state, screen_update_neogeo)
|
||||
|
||||
/* audio hardware */
|
||||
MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker")
|
||||
|
||||
MCFG_SOUND_ADD("ymsnd", YM2610, NEOGEO_YM2610_CLOCK)
|
||||
MCFG_SOUND_CONFIG(ym2610_config)
|
||||
MCFG_SOUND_ROUTE(0, "lspeaker", 0.60)
|
||||
MCFG_SOUND_ROUTE(0, "rspeaker", 0.60)
|
||||
MCFG_SOUND_ROUTE(1, "lspeaker", 1.0)
|
||||
MCFG_SOUND_ROUTE(2, "rspeaker", 1.0)
|
||||
|
||||
/* NEC uPD4990A RTC */
|
||||
MCFG_UPD4990A_ADD("upd4990a")
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
static MACHINE_CONFIG_DERIVED( aes, neogeo )
|
||||
|
||||
MCFG_MEMCARD_HANDLER(neogeo)
|
||||
|
||||
MCFG_CARTSLOT_ADD("cart")
|
||||
MCFG_CARTSLOT_LOAD(neo_cartridge)
|
||||
MCFG_CARTSLOT_INTERFACE("neo_cart")
|
||||
@ -1651,7 +1539,6 @@ static MACHINE_CONFIG_DERIVED( aes, neogeo )
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
|
||||
|
||||
/* NeoCD uses custom vectors on IRQ4 to handle various events from the CDC */
|
||||
|
||||
static IRQ_CALLBACK(neocd_int_callback)
|
||||
@ -1677,7 +1564,7 @@ struct cdrom_interface neocd_cdrom =
|
||||
NULL
|
||||
};
|
||||
|
||||
static MACHINE_CONFIG_DERIVED( neocd, neogeo )
|
||||
static MACHINE_CONFIG_DERIVED_CLASS( neocd, neogeo_base, ng_aes_state )
|
||||
|
||||
MCFG_CPU_MODIFY("maincpu")
|
||||
MCFG_CPU_PROGRAM_MAP(neocd_main_map)
|
||||
@ -1686,6 +1573,11 @@ static MACHINE_CONFIG_DERIVED( neocd, neogeo )
|
||||
MCFG_CPU_PROGRAM_MAP(neocd_audio_map)
|
||||
MCFG_CPU_IO_MAP(neocd_audio_io_map)
|
||||
|
||||
// temporary until things are cleaned up
|
||||
MCFG_DEVICE_ADD("tempcdc", LC89510_TEMP, 0) // cd controller
|
||||
MCFG_SEGACD_HACK_SET_NEOCD
|
||||
|
||||
MCFG_MEMCARD_HANDLER(neogeo_aes)
|
||||
|
||||
MCFG_MACHINE_START_OVERRIDE(ng_aes_state,neocd)
|
||||
MCFG_MACHINE_RESET_OVERRIDE(ng_aes_state,neocd)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user