Improved the Bra$il driver,adding proper IRQ and some blitter hook-up.
(it does something if you toggle the "unknown trigger" that is mapped in the DIP-SW).
This commit is contained in:
Angelo Salese
parent
f2e1100810
commit
ec9e3d4c93
@ -1,9 +1,15 @@
|
||||
/* bra$il (me am) */
|
||||
/* bra$il */
|
||||
|
||||
/*
|
||||
|
||||
CPU 1x
|
||||
TODO:
|
||||
-understand how the blitter really works (commands/video registers etc.);
|
||||
-fix / locate input ports;
|
||||
-add the sound chip into MAME (OkiM6376),it's already in AGEMAME so it should be easy to merge it.
|
||||
|
||||
==================================================================================
|
||||
|
||||
CPUs
|
||||
N80C186XL25 (main)(u1)
|
||||
1x ispLSI2032-80LJ (u13)(not dumped)
|
||||
1x ispLSI1032E-70LJ (u18)(not dumped)
|
||||
@ -32,6 +38,8 @@ http://media.digikey.com/pdf/Data%20Sheets/Intel%20PDFs/80C186XL,%2080C188XL.pdf
|
||||
|
||||
#include "driver.h"
|
||||
|
||||
static UINT16 *blit_ram;
|
||||
|
||||
VIDEO_START(brasil)
|
||||
{
|
||||
|
||||
@ -39,34 +47,200 @@ VIDEO_START(brasil)
|
||||
|
||||
VIDEO_UPDATE(brasil)
|
||||
{
|
||||
int x,y,count;
|
||||
|
||||
count = (0/2);
|
||||
|
||||
// popmessage("%d %d",max_x,max_y);
|
||||
|
||||
for(y=0;y<200;y++)
|
||||
{
|
||||
for(x=0;x<800;x++)
|
||||
{
|
||||
UINT32 color;
|
||||
UINT32 b;
|
||||
UINT32 g;
|
||||
UINT32 r;
|
||||
|
||||
color = (blit_ram[count]) & 0xffff;
|
||||
|
||||
b = (color & 0x001f) << 3;
|
||||
g = (color & 0x07e0) >> 2;
|
||||
r = (color & 0xf800) >> 6;
|
||||
if(x<cliprect->max_x && y<cliprect->max_y)
|
||||
*BITMAP_ADDR32(bitmap, y, x) = b | (g<<8) | (r<<16);
|
||||
|
||||
count++;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*Some sort of status registers,probably blitter/vblank related.*/
|
||||
static UINT16 unk_latch;
|
||||
|
||||
static READ16_HANDLER( unk_status_r )
|
||||
{
|
||||
switch(offset*2)
|
||||
{
|
||||
case 0: return input_port_read(space->machine, "IN0"); //and 0x23 -> result = 3 at start-up
|
||||
case 2: return (unk_latch & 3); //and 0x3f
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*bankaddress might be wrong...*/
|
||||
static WRITE16_HANDLER( unk_status_w )
|
||||
{
|
||||
static UINT32 bankaddress;
|
||||
UINT8 *ROM = memory_region(space->machine, "user1");
|
||||
|
||||
switch(data & 3)
|
||||
{
|
||||
case 0: unk_latch = 1; break;
|
||||
case 1: unk_latch = 0; break;
|
||||
case 2: unk_latch = 2; break;
|
||||
}
|
||||
|
||||
bankaddress = (data & 0x0f) * 0x40000;
|
||||
|
||||
memory_set_bankptr(space->machine, 1, &ROM[bankaddress]);
|
||||
|
||||
// popmessage("%04x",data);
|
||||
}
|
||||
|
||||
static UINT16 t1,t2,t3;
|
||||
|
||||
static READ16_HANDLER( read1_r )
|
||||
{
|
||||
return t1;
|
||||
}
|
||||
|
||||
static READ16_HANDLER( read2_r )
|
||||
{
|
||||
return t2;
|
||||
}
|
||||
|
||||
static READ16_HANDLER( read3_r )
|
||||
{
|
||||
return t3;
|
||||
}
|
||||
|
||||
static WRITE16_HANDLER( write1_w )
|
||||
{
|
||||
t1 = data;
|
||||
}
|
||||
|
||||
static WRITE16_HANDLER( write2_w )
|
||||
{
|
||||
t2 = data;
|
||||
}
|
||||
|
||||
static WRITE16_HANDLER( write3_w )
|
||||
{
|
||||
t3 = data;
|
||||
}
|
||||
|
||||
static ADDRESS_MAP_START( brasil_map, ADDRESS_SPACE_PROGRAM, 16 )
|
||||
AM_RANGE(0x00000, 0x7ffff) AM_RAM // probably not
|
||||
AM_RANGE(0xe0000, 0xfffff) AM_ROMBANK(1)
|
||||
AM_RANGE(0x00000, 0x0ffff) AM_RAM /*irq vector area + work ram*/
|
||||
AM_RANGE(0x40000, 0x7ffff) AM_RAM AM_BASE(&blit_ram) /*blitter ram*/
|
||||
AM_RANGE(0x80000, 0xcffff) AM_ROMBANK(1)
|
||||
AM_RANGE(0xd0000, 0xfffff) AM_ROMBANK(2) //not a real rom bank,just for debug
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( brasil_io, ADDRESS_SPACE_IO, 16 )
|
||||
AM_RANGE(0x0030, 0x0033) AM_READ( unk_status_r )
|
||||
AM_RANGE(0x0030, 0x0031) AM_WRITE( unk_status_w )
|
||||
// AM_RANGE(0x0000, 0x0001) AM_WRITE //0-f I/O range,appears to be video registers related
|
||||
// AM_RANGE(0x0002, 0x0003) AM_WRITE //"map" register for the blitter?
|
||||
// AM_RANGE(0x0006, 0x0007) AM_WRITE //"map" register for the blitter?
|
||||
AM_RANGE(0x0008, 0x0009) AM_READWRITE( read1_r,write1_w ) // commands?
|
||||
AM_RANGE(0x000a, 0x000b) AM_READWRITE( read2_r,write2_w ) // ""
|
||||
AM_RANGE(0x000e, 0x000f) AM_READWRITE( read3_r,write3_w ) // ""
|
||||
// AM_RANGE(0x000e, 0x000f) AM_WRITE
|
||||
// AM_RANGE(0xffa2, 0xffa3) AM_WRITE
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static INPUT_PORTS_START( brasil )
|
||||
PORT_START("IN0")
|
||||
PORT_DIPNAME( 0x0001, 0x0001, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0001, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0002, 0x0002, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0002, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0004, 0x0004, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0004, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0008, 0x0008, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0008, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0010, 0x0010, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0010, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0020, 0x0000, "unknown trigger" )
|
||||
PORT_DIPSETTING( 0x0020, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0040, 0x0040, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0040, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0080, 0x0080, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0080, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0100, 0x0100, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0100, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0200, 0x0200, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0200, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0400, 0x0400, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0400, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x0800, 0x0800, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x0800, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x1000, 0x1000, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x1000, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x2000, 0x2000, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x2000, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x4000, 0x4000, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x4000, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
PORT_DIPNAME( 0x8000, 0x8000, DEF_STR( Unknown ) )
|
||||
PORT_DIPSETTING( 0x8000, DEF_STR( Off ) )
|
||||
PORT_DIPSETTING( 0x0000, DEF_STR( On ) )
|
||||
INPUT_PORTS_END
|
||||
|
||||
static INTERRUPT_GEN( vblank_irq )
|
||||
{
|
||||
cpu_set_input_line_and_vector(device,0,HOLD_LINE,0x08/4);
|
||||
}
|
||||
|
||||
static MACHINE_DRIVER_START( brasil )
|
||||
MDRV_CPU_ADD("main", I80186, 25000000 ) // ?
|
||||
MDRV_CPU_PROGRAM_MAP(brasil_map,0)
|
||||
//MDRV_CPU_VBLANK_INT("main", irq0_line_hold)
|
||||
MDRV_CPU_IO_MAP(brasil_io,0)
|
||||
MDRV_CPU_VBLANK_INT("main", vblank_irq)
|
||||
|
||||
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(64*8, 32*8)
|
||||
MDRV_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0*8, 32*8-1)
|
||||
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
|
||||
// MDRV_SCREEN_SIZE(64*8, 32*8)
|
||||
// MDRV_SCREEN_VISIBLE_AREA(0*8, 64*8-1, 0*8, 32*8-1)
|
||||
MDRV_SCREEN_SIZE(512, 512)
|
||||
MDRV_SCREEN_VISIBLE_AREA(0, 400-1, 0, 160-1)
|
||||
|
||||
MDRV_PALETTE_LENGTH(0x200)
|
||||
|
||||
MDRV_VIDEO_START(brasil)
|
||||
MDRV_VIDEO_UPDATE(brasil)
|
||||
|
||||
//OkiM6376
|
||||
MACHINE_DRIVER_END
|
||||
|
||||
ROM_START( brasil )
|
||||
@ -80,8 +254,8 @@ ROM_END
|
||||
|
||||
DRIVER_INIT( brasil )
|
||||
{
|
||||
UINT8 *RAM = memory_region(machine, "user1");
|
||||
memory_set_bankptr(machine, 1, &RAM[0x1e0000]);
|
||||
UINT8 *ROM = memory_region(machine, "user1");
|
||||
memory_set_bankptr(machine, 2, &ROM[0x1d0000]);
|
||||
}
|
||||
|
||||
GAME( 2000, brasil, 0, brasil, brasil, brasil, ROT0, "unknown", "Bra$il", GAME_NOT_WORKING | GAME_NO_SOUND )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user