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mc68hc11: Added SEC & SEV.

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Added some basic video emulation to Hit Poker, to let it show "9rror / 3hut 5own -achine"

=========================================================================================

http://mamedev.emulab.it/kale/fast/files/0013_1049739007.png
This commit is contained in:
Angelo Salese 2009-06-19 19:14:27 +00:00
parent 39a1c1804d
commit f6943c73e9
3 changed files with 75 additions and 7 deletions
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12
src/emu/cpu/mc68hc11/hc11ops.c
View File

@ -2103,6 +2103,12 @@ static void HC11OP(rts)(hc11_state *cpustate)
CYCLES(cpustate, 5);
}
/* SEC 0x0D */
static void HC11OP(sec)(hc11_state *cpustate)
{
cpustate->ccr |= CC_C;
CYCLES(cpustate, 2);
}
/* SEI 0x0F */
static void HC11OP(sei)(hc11_state *cpustate)
@ -2111,6 +2117,12 @@ static void HC11OP(sei)(hc11_state *cpustate)
CYCLES(cpustate, 2);
}
/* SEV 0x0B */
static void HC11OP(sev)(hc11_state *cpustate)
{
cpustate->ccr |= CC_V;
CYCLES(cpustate, 2);
}
/* STAA DIR 0x97 */
static void HC11OP(staa_dir)(hc11_state *cpustate)

2
src/emu/cpu/mc68hc11/hc11ops.h
View File

@ -176,7 +176,9 @@ static const hc11_opcode_list_struct hc11_opcode_list[] =
{ 0, 0x38, HC11OP(pulx) },
{ 0x18, 0x38, HC11OP(puly) },
{ 0, 0x39, HC11OP(rts) },
{ 0, 0x0d, HC11OP(sec) },
{ 0, 0x0f, HC11OP(sei) },
{ 0, 0x0b, HC11OP(sev) },
{ 0, 0x97, HC11OP(staa_dir) },
{ 0, 0xb7, HC11OP(staa_ext) },
{ 0, 0xa7, HC11OP(staa_indx) },

68
src/mame/drivers/hitpoker.c
View File

@ -20,12 +20,21 @@ Skeleton driver, just the main CPU has been identified (a MC68HC11). This one
requires some mods to the cpu core in order to start to work...
Many thanks to Olivier Galibert for the identify effort ;-)
How to initialize this:
- let it run then soft reset (it wants that ram at 0-0xff is equal to 0xff,
nvram maybe?);
- set a bp 10c5 then pc=10c8, it currently fails the rom checksum for
whatever reason (should be 0 and it returns 0x89), note that area
0xf00-0xfff isn't tested at all, maybe that belongs to somewhere else?
***************************************************************************/
#include "driver.h"
#include "cpu/mc68hc11/mc68hc11.h"
static UINT8 *work_ram;
VIDEO_START(hitpoker)
{
@ -33,25 +42,63 @@ VIDEO_START(hitpoker)
VIDEO_UPDATE(hitpoker)
{
UINT8 *VRAM = memory_region(screen->machine, "vram");
const gfx_element *gfx = screen->machine->gfx[0];
int count = 0;
int y,x;
bitmap_fill(bitmap, cliprect, 0);
for (x=0;x<64;x++)
{
for (y=0;y<42;y+=2)
{
int tile;
tile = ((VRAM[count]<<8)|(VRAM[count+1])) & 0x1fff;
drawgfx(bitmap,gfx,tile,0,0,0,x*16,(y+0)*8,cliprect,TRANSPARENCY_NONE,0);
tile = ((VRAM[count+2]<<8)|(VRAM[count+3])) & 0x1fff;
drawgfx(bitmap,gfx,tile,0,0,0,x*16,(y+1)*8,cliprect,TRANSPARENCY_NONE,0);
count+=4;
}
}
return 0;
}
/* It wants that the even/odd memory is equal for this, 8-bit vram on a 16-bit wide bus? */
static READ8_HANDLER( hitpoker_vram_r )
static READ8_HANDLER( hitpoker_work_ram_r )
{
return videoram[offset & ~1];
return work_ram[offset & ~1];
}
static WRITE8_HANDLER( hitpoker_work_ram_w )
{
work_ram[offset & ~1] = data;
}
static WRITE8_HANDLER( hitpoker_vram_w )
{
videoram[offset & ~1] = data;
UINT8 *VRAM = memory_region(space->machine, "vram");
VRAM[offset] = data;
}
static WRITE8_HANDLER( hitpoker_cram_w )
{
UINT8 *CRAM = memory_region(space->machine, "cram");
CRAM[offset] = data;
}
/* overlap empty rom addresses */
static ADDRESS_MAP_START( main_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x00ff) AM_RAM // stack ram
AM_RANGE(0x1000, 0x103f) AM_RAM // hw regs?
AM_RANGE(0xb600, 0xbeff) AM_READWRITE(hitpoker_vram_r,hitpoker_vram_w) AM_BASE(&videoram) // vram / paletteram?
AM_RANGE(0xb600, 0xbeff) AM_READWRITE(hitpoker_work_ram_r,hitpoker_work_ram_w) AM_BASE(&work_ram)
AM_RANGE(0x8000, 0x8fff) AM_WRITE(hitpoker_vram_w)
AM_RANGE(0xc000, 0xcfff) AM_WRITE(hitpoker_cram_w)
AM_RANGE(0x0000, 0xffff) AM_ROM
ADDRESS_MAP_END
@ -77,6 +124,7 @@ static const gfx_layout hitpoker_layout =
static PALETTE_INIT( hitpoker )
{
#if 0
int x,r,g,b;
for(x=0;x<0x100;x++)
@ -86,6 +134,7 @@ static PALETTE_INIT( hitpoker )
b = ((x & 0xf0)>>4)*0x10;
palette_set_color(machine,x,MAKE_RGB(r,g,b));
}
#endif
}
static GFXDECODE_START( hitpoker )
@ -95,15 +144,15 @@ GFXDECODE_END
static MACHINE_DRIVER_START( hitpoker )
MDRV_CPU_ADD("maincpu", MC68HC11,2000000)
MDRV_CPU_PROGRAM_MAP(main_map)
// MDRV_CPU_VBLANK_INT("main", irq0_line_hold)
MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
/* video hardware */
MDRV_SCREEN_ADD("screen", RASTER)
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(512, 256)
MDRV_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-1)
MDRV_SCREEN_SIZE(1024, 512)
MDRV_SCREEN_VISIBLE_AREA(0, 1024-1, 0, 512-1)
MDRV_GFXDECODE(hitpoker)
MDRV_PALETTE_LENGTH(0x100)
@ -118,6 +167,11 @@ ROM_START( hitpoker )
ROM_REGION( 0x10000, "maincpu", 0 )
ROM_LOAD( "u4.bin", 0x0000, 0x10000, CRC(0016497a) SHA1(017320bfe05fea8a48e26a66c0412415846cee7c) )
ROM_REGION( 0x1000, "vram", ROMREGION_ERASE00 )
ROM_REGION( 0x1000, "cram", ROMREGION_ERASE00 )
ROM_REGION( 0x100000, "gfx1", 0 ) // tile 0x4c8 seems to contain something non-gfx related, could be tilemap / colour data, check!
ROM_LOAD16_BYTE( "u42.bin", 0x00001, 0x40000, CRC(cbe56fec) SHA1(129bfd10243eaa7fb6a087f96de90228e6030353) )
ROM_LOAD16_BYTE( "u43.bin", 0x00000, 0x40000, CRC(6c0d4283) SHA1(04a4fd82f5cc0ed9f548e490ac67d287227073c3) )