/*
Intersecti
No names on the pcb and the only ascii text is in the sound rom "Intersecti". Has a daughterboard with "Serai-Padova-1" on it
Having disassembled the 1911 code roms, I'd guess that there is a rom in the epoxy block.
I've not had a chance to wire up the board yet, but it might be possible to write a trojan to display the rom(s) at $8000
*/
#include "driver.h"
static READ8_HANDLER( unk_r )
{
return mame_rand(machine);
}
static UINT8 *intrscti_ram;
static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x1fff) AM_READ(SMH_ROM)
AM_RANGE(0x6000, 0x67ff) AM_READ(SMH_RAM)
AM_RANGE(0x7000, 0x77ff) AM_READ(SMH_RAM)
AM_RANGE(0x8000, 0x8fff) AM_READ(SMH_ROM)
ADDRESS_MAP_END
static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x1fff) AM_WRITE(SMH_ROM)
AM_RANGE(0x6000, 0x67ff) AM_WRITE(SMH_RAM)
AM_RANGE(0x7000, 0x77ff) AM_WRITE(SMH_RAM) AM_BASE(&intrscti_ram) // video ram
AM_RANGE(0x8000, 0x8fff) AM_WRITE(SMH_ROM)
ADDRESS_MAP_END
static ADDRESS_MAP_START( readport, ADDRESS_SPACE_IO, 8 )
ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0x00, 0x00) AM_READ( unk_r )
AM_RANGE(0x01, 0x01) AM_READ( unk_r )
ADDRESS_MAP_END
static INPUT_PORTS_START( intrscti )
INPUT_PORTS_END
static const gfx_layout tiles8x8_layout =
{
8,8,
RGN_FRAC(1,3),
3,
{ RGN_FRAC(0,3), RGN_FRAC(1,3),RGN_FRAC(2,3) },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
8*8
};
static GFXDECODE_START( intrscti )
GFXDECODE_ENTRY( "gfx1", 0, tiles8x8_layout, 0, 16 )
GFXDECODE_END
static VIDEO_START(intrscti)
{
}
static VIDEO_UPDATE(intrscti)
{
int y,x;
int count;
fillbitmap(bitmap, get_black_pen(screen->machine), cliprect);
count = 0;
for (y=0;y<64;y++)
{
for (x=0;x<32;x++)
{
int dat;
dat = intrscti_ram[count];
drawgfx(bitmap,screen->machine->gfx[0],dat/*+0x100*/,0,0,0,x*8,y*8,cliprect,TRANSPARENCY_PEN,0);
count++;
}
}
return 0;
}
static MACHINE_DRIVER_START( intrscti )
/* basic machine hardware */
MDRV_CPU_ADD("main", Z80,4000000) /* ? MHz */
MDRV_CPU_PROGRAM_MAP(readmem,writemem)
MDRV_CPU_IO_MAP(readport,0)
MDRV_CPU_VBLANK_INT("main", irq0_line_hold)
/* video hardware */
MDRV_SCREEN_ADD("main", RASTER)
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(256, 512)
MDRV_SCREEN_VISIBLE_AREA(0, 256-1, 0, 512-1)
MDRV_GFXDECODE(intrscti)
MDRV_PALETTE_LENGTH(0x100)
MDRV_VIDEO_START(intrscti)
MDRV_VIDEO_UPDATE(intrscti)
MACHINE_DRIVER_END
ROM_START( intrscti )
ROM_REGION( 0x10000, "main", 0 )
ROM_LOAD( "1911_1.7g", 0x0000, 0x1000, CRC(8940e6ee) SHA1(50da11a6fab8f31c72c08dbf374268fff18a74e3) )
ROM_LOAD( "1911_2.8g", 0x1000, 0x1000, CRC(a461031e) SHA1(338c8cd79b98c666edd204150dea65ce4b9ec288) )
ROM_LOAD( "epoxy_block", 0x8000,0x1000, NO_DUMP )
ROM_REGION( 0x10000, "cpu1", 0 )
ROM_LOAD( "ok.13b", 0x00000, 0x800, CRC(cbfa3eba) SHA1(b5a81a4535e7883a3ff8fb4021ddd7dbfaf3c7ae) )
ROM_REGION( 0x3000, "gfx1", 0 )
ROM_LOAD( "r.5c", 0x0000, 0x1000, CRC(092cc8f2) SHA1(f0c717128e0ac6adc032616a8cafaec88aa0fb90) )
ROM_LOAD( "g.5b", 0x1000, 0x1000, CRC(2d7cf465) SHA1(70fcb5818f2dfe499bb52501403449660837557d) )
ROM_LOAD( "b.5a", 0x2000, 0x1000, CRC(8951fb7e) SHA1(c423bf0536e3a09453814172e31b47f9c3c3324c) )
ROM_END
static DRIVER_INIT( intrscti )
{
UINT8 *cpu = memory_region( machine, "main" );
int i;
for (i=0x8000;i<0x8fff;i++)
{
cpu[i]=0xc9; // ret
}
}
GAME( 19??, intrscti, 0, intrscti, intrscti, intrscti, ROT0, "Unknown", "Intersecti", GAME_NO_SOUND|GAME_NOT_WORKING )