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https://github.com/holub/mame
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* chinagat.diff:
- converted driver to be fully scanlines based using timers - hooked up interrupts - updated driver to new video screen raw parameters (based on ddragon.c driver)
This commit is contained in:
Aaron Giles
parent
27af046497
commit
1df287a875
@ -79,6 +79,9 @@ Dip locations and factory settings verified with China Gate US manual.
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#include "sound/okim6295.h"
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#include "sound/msm5205.h"
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#define MAIN_CLOCK XTAL_12MHz
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#define PIXEL_CLOCK MAIN_CLOCK / 2
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/**************** Video stuff ******************/
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WRITE8_HANDLER( ddragon_bgvideoram_w );
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@ -107,11 +110,87 @@ static int saiyugb1_m5205_clk;
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static MACHINE_RESET( chinagat )
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/*
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Based on the Solar Warrior schematics, vertical timing counts as follows:
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08,09,0A,0B,...,FC,FD,FE,FF,E8,E9,EA,EB,...,FC,FD,FE,FF,
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08,09,....
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Thus, it counts from 08 to FF, then resets to E8 and counts to FF again.
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This gives (256 - 8) + (256 - 232) = 248 + 24 = 272 total scanlines.
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VBLK is signalled starting when the counter hits F8, and continues through
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the reset to E8 and through until the next reset to 08 again.
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Since MAME's video timing is 0-based, we need to convert this.
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*/
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/* based on ddragon.c driver */
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INLINE int scanline_to_vcount(int scanline)
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{
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technos_video_hw = 1;
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sprite_irq = M6809_IRQ_LINE;
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sound_irq = INPUT_LINE_NMI;
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int vcount = scanline + 8;
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if (vcount < 0x100)
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return vcount;
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else
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return (vcount - 0x18) | 0x100;
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}
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static TIMER_DEVICE_CALLBACK( chinagat_scanline )
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{
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int scanline = param;
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int screen_height = video_screen_get_height(timer->machine->primary_screen);
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int vcount_old = scanline_to_vcount((scanline == 0) ? screen_height - 1 : scanline - 1);
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int vcount = scanline_to_vcount(scanline);
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/* update to the current point */
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if (scanline > 0)
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{
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video_screen_update_partial(timer->machine->primary_screen, scanline - 1);
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}
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/* on the rising edge of VBLK (vcount == F8), signal an NMI */
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if (vcount == 0xf8)
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{
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cpu_set_input_line(timer->machine->cpu[0], INPUT_LINE_NMI, ASSERT_LINE);
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}
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/* set 1ms signal on rising edge of vcount & 8 */
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if (!(vcount_old & 8) && (vcount & 8))
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{
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cpu_set_input_line(timer->machine->cpu[0], M6809_FIRQ_LINE, ASSERT_LINE);
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}
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/* adjust for next scanline */
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if (++scanline >= screen_height)
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{
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scanline = 0;
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}
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}
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static WRITE8_HANDLER( chinagat_interrupt_w )
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{
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switch (offset)
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{
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case 0: /* 3e00 - SND irq */
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soundlatch_w( space, 0, data );
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cpu_set_input_line(space->machine->cpu[2], sound_irq, (sound_irq == INPUT_LINE_NMI) ? PULSE_LINE : HOLD_LINE );
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break;
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case 1: /* 3e01 - NMI ack */
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cpu_set_input_line(space->machine->cpu[0], INPUT_LINE_NMI, CLEAR_LINE);
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break;
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case 2: /* 3e02 - FIRQ ack */
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cpu_set_input_line(space->machine->cpu[0], M6809_FIRQ_LINE, CLEAR_LINE);
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break;
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case 3: /* 3e03 - IRQ ack */
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cpu_set_input_line(space->machine->cpu[0], M6809_IRQ_LINE, CLEAR_LINE);
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break;
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case 4: /* 3e04 - sub CPU IRQ ack */
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cpu_set_input_line(space->machine->cpu[1], sprite_irq, (sprite_irq == INPUT_LINE_NMI) ? PULSE_LINE : HOLD_LINE );
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break;
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}
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}
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static WRITE8_HANDLER( chinagat_video_ctrl_w )
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@ -141,17 +220,6 @@ static WRITE8_HANDLER( chinagat_sub_bankswitch_w )
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memory_set_bankptr(space->machine, 4,&RAM[ 0x10000 + (0x4000 * (data & 7)) ] );
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}
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static WRITE8_HANDLER( chinagat_sub_IRQ_w )
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{
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cpu_set_input_line(space->machine->cpu[1], sprite_irq, (sprite_irq == INPUT_LINE_NMI) ? PULSE_LINE : HOLD_LINE );
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}
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static WRITE8_HANDLER( chinagat_cpu_sound_cmd_w )
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{
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soundlatch_w( space, offset, data );
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cpu_set_input_line(space->machine->cpu[2], sound_irq, (sound_irq == INPUT_LINE_NMI) ? PULSE_LINE : HOLD_LINE );
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}
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static READ8_HANDLER( saiyugb1_mcu_command_r )
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{
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#if 0
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@ -270,11 +338,7 @@ static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
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AM_RANGE(0x3000, 0x317f) AM_WRITE(paletteram_xxxxBBBBGGGGRRRR_split1_w) AM_BASE(&paletteram)
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AM_RANGE(0x3400, 0x357f) AM_WRITE(paletteram_xxxxBBBBGGGGRRRR_split2_w) AM_BASE(&paletteram_2)
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AM_RANGE(0x3800, 0x397f) AM_WRITE(SMH_BANK3) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
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AM_RANGE(0x3e00, 0x3e00) AM_WRITE(chinagat_cpu_sound_cmd_w)
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// AM_RANGE(0x3e01, 0x3e01) AM_WRITE(SMH_NOP)
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// AM_RANGE(0x3e02, 0x3e02) AM_WRITE(SMH_NOP)
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// AM_RANGE(0x3e03, 0x3e03) AM_WRITE(SMH_NOP)
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AM_RANGE(0x3e04, 0x3e04) AM_WRITE(chinagat_sub_IRQ_w)
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AM_RANGE(0x3e00, 0x3e04) AM_WRITE(chinagat_interrupt_w)
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AM_RANGE(0x3e06, 0x3e06) AM_WRITE(SMH_RAM) AM_BASE(&ddragon_scrolly_lo)
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AM_RANGE(0x3e07, 0x3e07) AM_WRITE(SMH_RAM) AM_BASE(&ddragon_scrollx_lo)
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AM_RANGE(0x3f00, 0x3f00) AM_WRITE(chinagat_video_ctrl_w)
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@ -458,6 +522,7 @@ static GFXDECODE_START( chinagat )
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GFXDECODE_ENTRY( "gfx3", 0, tilelayout, 256, 8 ) /* 16x16 background tiles */
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GFXDECODE_END
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static void chinagat_irq_handler(running_machine *machine, int irq)
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{
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cpu_set_input_line(machine->cpu[2], 0, irq ? ASSERT_LINE : CLEAR_LINE );
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@ -468,7 +533,6 @@ static const ym2151_interface ym2151_config =
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chinagat_irq_handler
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};
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/* This on the bootleg board, instead of the m6295 */
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static const msm5205_interface msm5205_config =
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{
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@ -476,12 +540,6 @@ static const msm5205_interface msm5205_config =
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MSM5205_S64_4B /* vclk input mode (6030Hz, 4-bit) */
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};
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static INTERRUPT_GEN( chinagat_interrupt )
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{
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cpu_set_input_line(device, 1, HOLD_LINE); /* hold the FIRQ line */
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cpu_set_input_line(device, INPUT_LINE_NMI, PULSE_LINE); /* pulse the NMI line */
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}
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/* This is only on the second bootleg board */
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static const ym2203_interface ym2203_config =
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{
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@ -496,27 +554,22 @@ static const ym2203_interface ym2203_config =
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static MACHINE_DRIVER_START( chinagat )
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/* basic machine hardware */
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MDRV_CPU_ADD("main", HD6309,12000000/2) /* 1.5 MHz (12MHz oscillator ???) */
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MDRV_CPU_ADD("main", HD6309, MAIN_CLOCK / 2) /* 1.5 MHz (12MHz oscillator / 4 internally) */
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MDRV_CPU_PROGRAM_MAP(main_map,0)
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MDRV_CPU_VBLANK_INT("main", chinagat_interrupt)
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MDRV_TIMER_ADD_SCANLINE("scantimer", chinagat_scanline, "main", 0, 1)
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MDRV_CPU_ADD("sub", HD6309,12000000/2) /* 1.5 MHz (12MHz oscillator ???) */
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MDRV_CPU_ADD("sub", HD6309, MAIN_CLOCK / 2) /* 1.5 MHz (12MHz oscillator / 4 internally) */
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MDRV_CPU_PROGRAM_MAP(sub_map,0)
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MDRV_CPU_ADD("audio", Z80, 3579545) /* 3.579545 MHz */
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MDRV_CPU_ADD("audio", Z80, XTAL_3_579545MHz) /* 3.579545 MHz */
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MDRV_CPU_PROGRAM_MAP(sound_map,0)
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MDRV_QUANTUM_TIME(HZ(6000)) /* heavy interleaving to sync up sprite<->main cpu's */
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MDRV_MACHINE_RESET(chinagat)
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/* video hardware */
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MDRV_SCREEN_ADD("main", RASTER)
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MDRV_SCREEN_REFRESH_RATE(56)
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_SIZE(32*8, 32*8)
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MDRV_SCREEN_VISIBLE_AREA(1*8, 31*8-1, 1*8, 29*8-1)
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MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, 384, 0, 256, 272, 0, 240) /* based on ddragon driver */
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MDRV_GFXDECODE(chinagat)
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MDRV_PALETTE_LENGTH(384)
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@ -540,14 +593,14 @@ MACHINE_DRIVER_END
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static MACHINE_DRIVER_START( saiyugb1 )
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/* basic machine hardware */
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MDRV_CPU_ADD("main", M6809,12000000/8) /* 68B09EP 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_ADD("main", M6809, MAIN_CLOCK / 8) /* 68B09EP 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_PROGRAM_MAP(main_map,0)
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MDRV_CPU_VBLANK_INT("main", chinagat_interrupt)
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MDRV_TIMER_ADD_SCANLINE("scantimer", chinagat_scanline, "main", 0, 1)
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MDRV_CPU_ADD("sub", M6809,12000000/8) /* 68B09EP 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_ADD("sub", M6809, MAIN_CLOCK / 8) /* 68B09EP 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_PROGRAM_MAP(sub_map,0)
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MDRV_CPU_ADD("audio", Z80, 3579545) /* 3.579545 MHz oscillator */
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MDRV_CPU_ADD("audio", Z80, XTAL_3_579545MHz) /* 3.579545 MHz oscillator */
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MDRV_CPU_PROGRAM_MAP(saiyugb1_sound_map,0)
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MDRV_CPU_ADD("mcu", I8748, 9263750) /* 9.263750 MHz oscillator, divided by 3*5 internally */
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@ -556,15 +609,10 @@ static MACHINE_DRIVER_START( saiyugb1 )
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MDRV_QUANTUM_TIME(HZ(6000)) /* heavy interleaving to sync up sprite<->main cpu's */
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MDRV_MACHINE_RESET(chinagat)
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/* video hardware */
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MDRV_SCREEN_ADD("main", RASTER)
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MDRV_SCREEN_REFRESH_RATE(56)
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_SIZE(32*8, 32*8)
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MDRV_SCREEN_VISIBLE_AREA(1*8, 31*8-1, 1*8, 29*8-1)
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MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, 384, 0, 256, 272, 0, 240) /* based on ddragon driver */
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MDRV_GFXDECODE(chinagat)
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MDRV_PALETTE_LENGTH(384)
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@ -588,27 +636,22 @@ MACHINE_DRIVER_END
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static MACHINE_DRIVER_START( saiyugb2 )
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/* basic machine hardware */
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MDRV_CPU_ADD("main", M6809,12000000/8) /* 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_ADD("main", M6809, MAIN_CLOCK / 8) /* 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_PROGRAM_MAP(main_map,0)
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MDRV_CPU_VBLANK_INT("main", chinagat_interrupt)
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MDRV_TIMER_ADD_SCANLINE("scantimer", chinagat_scanline, "main", 0, 1)
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MDRV_CPU_ADD("sub", M6809,12000000/8) /* 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_ADD("sub", M6809, MAIN_CLOCK / 8) /* 1.5 MHz (12MHz oscillator) */
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MDRV_CPU_PROGRAM_MAP(sub_map,0)
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MDRV_CPU_ADD("audio", Z80, 3579545) /* 3.579545 MHz oscillator */
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MDRV_CPU_ADD("audio", Z80, XTAL_3_579545MHz) /* 3.579545 MHz oscillator */
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MDRV_CPU_PROGRAM_MAP(ym2203c_sound_map,0)
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MDRV_QUANTUM_TIME(HZ(6000)) /* heavy interleaving to sync up sprite<->main cpu's */
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MDRV_MACHINE_RESET(chinagat)
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/* video hardware */
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MDRV_SCREEN_ADD("main", RASTER)
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MDRV_SCREEN_REFRESH_RATE(56)
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MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
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MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
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MDRV_SCREEN_SIZE(32*8, 32*8)
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MDRV_SCREEN_VISIBLE_AREA(1*8, 31*8-1, 1*8, 29*8-1)
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MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, 384, 0, 256, 272, 0, 240) /* based on ddragon driver */
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MDRV_GFXDECODE(chinagat)
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MDRV_PALETTE_LENGTH(384)
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@ -844,9 +887,16 @@ ROM_START( saiyugb2 )
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ROM_END
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static DRIVER_INIT( chinagat )
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{
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technos_video_hw = 1;
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sprite_irq = M6809_IRQ_LINE;
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sound_irq = INPUT_LINE_NMI;
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}
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/* ( YEAR NAME PARENT MACHINE INPUT INIT MONITOR COMPANY FULLNAME FLAGS ) */
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GAME( 1988, chinagat, 0, chinagat, chinagat, 0 , ROT0, "[Technos] (Taito Romstar license)", "China Gate (US)", 0 )
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GAME( 1988, saiyugou, chinagat, chinagat, chinagat, 0 , ROT0, "Technos", "Sai Yu Gou Ma Roku (Japan)", 0 )
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GAME( 1988, saiyugb1, chinagat, saiyugb1, chinagat, 0 , ROT0, "bootleg", "Sai Yu Gou Ma Roku (Japan bootleg 1)", GAME_IMPERFECT_SOUND )
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GAME( 1988, saiyugb2, chinagat, saiyugb2, chinagat, 0 , ROT0, "bootleg", "Sai Yu Gou Ma Roku (Japan bootleg 2)", 0 )
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GAME( 1988, chinagat, 0, chinagat, chinagat, chinagat, ROT0, "[Technos] (Taito Romstar license)", "China Gate (US)", 0 )
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GAME( 1988, saiyugou, chinagat, chinagat, chinagat, chinagat, ROT0, "Technos", "Sai Yu Gou Ma Roku (Japan)", 0 )
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GAME( 1988, saiyugb1, chinagat, saiyugb1, chinagat, chinagat, ROT0, "bootleg", "Sai Yu Gou Ma Roku (Japan bootleg 1)", GAME_IMPERFECT_SOUND )
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GAME( 1988, saiyugb2, chinagat, saiyugb2, chinagat, chinagat, ROT0, "bootleg", "Sai Yu Gou Ma Roku (Japan bootleg 2)", 0 )
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