Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 09:20:02 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

Checkpoint

Browse Source
This commit is contained in:
Angelo Salese 2011-05-04 19:10:43 +00:00
parent 415f52befb
commit 8974eada98
1 changed files with 22 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
src/mame/drivers/overdriv.c
View File

@ -5,6 +5,7 @@
driver by Nicola Salmoria
Notes:
- irq source for main CPU aren't understood, needs HW tests.
- Missing road (two unemulated K053250)
- Visible area and relative placement of sprites and tiles is most likely wrong.
- Test mode doesn't work well with 3 IRQ5 per frame, the ROM check doesn't work
@ -20,7 +21,6 @@
#include "emu.h"
#include "cpu/m68000/m68000.h"
#include "deprecat.h"
#include "video/konicdev.h"
#include "machine/eeprom.h"
#include "cpu/m6809/m6809.h"
@ -72,13 +72,16 @@ static WRITE16_HANDLER( eeprom_w )
}
}
static INTERRUPT_GEN( cpuA_interrupt )
static TIMER_DEVICE_CALLBACK( overdriv_cpuA_scanline )
{
if (cpu_getiloops(device))
device_set_input_line(device, 5, HOLD_LINE);
else
device_set_input_line(device, 4, HOLD_LINE);
int scanline = param;
/* TODO: irqs routines are TOO slow right now, it ends up firing spurious irqs for whatever reason (shared ram fighting?) */
/* this is a temporary solution to get rid of deprecat.h and the crashes, but also makes the game timer to be too slow */
if(scanline == 256 && timer.machine().primary_screen->frame_number() & 1) // vblank-out irq
cputag_set_input_line(timer.machine(), "maincpu", 4, HOLD_LINE);
else if((scanline % 128) == 0) // timer irq
cputag_set_input_line(timer.machine(), "maincpu", 5, HOLD_LINE);
}
static INTERRUPT_GEN( cpuB_interrupt )
@ -155,7 +158,6 @@ static WRITE16_HANDLER( overdriv_cpuB_irq6_w )
device_set_input_line(state->m_subcpu, 6, HOLD_LINE);
}
static ADDRESS_MAP_START( overdriv_master_map, AS_PROGRAM, 16 )
AM_RANGE(0x000000, 0x03ffff) AM_ROM
AM_RANGE(0x040000, 0x043fff) AM_RAM /* work RAM */
@ -164,7 +166,7 @@ static ADDRESS_MAP_START( overdriv_master_map, AS_PROGRAM, 16 )
AM_RANGE(0x0c0002, 0x0c0003) AM_READ_PORT("SYSTEM")
AM_RANGE(0x0e0000, 0x0e0001) AM_WRITENOP /* unknown (always 0x30) */
AM_RANGE(0x100000, 0x10001f) AM_WRITENOP /* 053252? (LSB) */
AM_RANGE(0x140000, 0x140001) AM_WRITE(watchdog_reset16_w)
AM_RANGE(0x140000, 0x140001) AM_WRITENOP //watchdog reset?
AM_RANGE(0x180000, 0x180001) AM_READ_PORT("PADDLE")
AM_RANGE(0x1c0000, 0x1c001f) AM_DEVWRITE8("k051316_1", k051316_ctrl_w, 0xff00)
AM_RANGE(0x1c8000, 0x1c801f) AM_DEVWRITE8("k051316_2", k051316_ctrl_w, 0xff00)
@ -329,22 +331,24 @@ static MACHINE_RESET( overdriv )
cputag_set_input_line(machine, "sub", INPUT_LINE_RESET, ASSERT_LINE);
}
static MACHINE_CONFIG_START( overdriv, overdriv_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", M68000,24000000/2) /* 12 MHz */
MCFG_CPU_PROGRAM_MAP(overdriv_master_map)
MCFG_CPU_VBLANK_INT_HACK(cpuA_interrupt,4) /* ??? IRQ 4 is vblank, IRQ 5 of unknown origin */
MCFG_TIMER_ADD_SCANLINE("scantimer", overdriv_cpuA_scanline, "screen", 0, 1)
MCFG_CPU_ADD("sub", M68000,24000000/2) /* 12 MHz */
MCFG_CPU_PROGRAM_MAP(overdriv_slave_map)
MCFG_CPU_VBLANK_INT("screen", cpuB_interrupt) /* IRQ 5 and 6 are generated by the main CPU. */
/* IRQ 5 is used only in test mode, to request the checksums of the gfx ROMs. */
MCFG_CPU_ADD("audiocpu", M6809,3579545/2) /* 1.789 MHz?? This might be the right speed, but ROM testing */
/* takes a little too much (the counter wraps from 0000 to 9999). */
/* This might just mean that the video refresh rate is less than */
/* 60 fps, that's how I fixed it for now. */
MCFG_CPU_PROGRAM_MAP(overdriv_sound_map)
/* IRQ 5 is used only in test mode, to request the checksums of the gfx ROMs. */
MCFG_CPU_ADD("audiocpu", M6809,3579545) /* 1.789 MHz?? This might be the right speed, but ROM testing */
MCFG_CPU_PROGRAM_MAP(overdriv_sound_map) /* takes a little too much (the counter wraps from 0000 to 9999). */
/* This might just mean that the video refresh rate is less than */
/* 60 fps, that's how I fixed it for now. */
MCFG_QUANTUM_TIME(attotime::from_hz(12000))
@ -359,9 +363,9 @@ static MACHINE_CONFIG_START( overdriv, overdriv_state )
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_REFRESH_RATE(59)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500))
MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MCFG_SCREEN_SIZE(64*8, 32*8)
MCFG_SCREEN_SIZE(64*8, 40*8)
MCFG_SCREEN_VISIBLE_AREA(13*8, (64-13)*8-1, 0*8, 32*8-1 )
MCFG_SCREEN_UPDATE(overdriv)