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Swinging Singles cleanup:

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- hooked up crt6845
- converted to tilemaps
- simplified protection(?) emulation
This commit is contained in:
Tomasz Slanina 2008-01-12 00:39:57 +00:00
parent b7e3cf357c
commit 8c53445b6e
1 changed files with 52 additions and 65 deletions
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117
src/mame/drivers/ssingles.c
View file

@ -15,34 +15,38 @@
Unknown reads/writes:
- AY i/o ports (writes)
- mem $c000, $c001 = protection device ? if tests fails, game crashes (problems with stack - skipped code with "pop af")
- i/o port $8 = data read used for $e command arg for onr of AY chips (volume? - could be a sample player (based on volume changes?)
- i/o port $1a = 1 or 0, rarely accessed
- i/o ports $fe,$ff (pair, unknown device , $fe = register, $ff = data ?? sample player)
initialized with data:
0 34
1 24
2 2c
3 14
4 f
5 0
6 e
7 e
8 0
9 f
a 0
b 0
c 0
d 0
e 0
f 0
- i/o port $8 = data read used for $e command arg for one of AY chips (volume? - could be a sample player (based on volume changes?)
- i/o port $1a = 1 or 0, rarely accessed, related to crt writes
*/
#include "driver.h"
#include "sound/ay8910.h"
#include "video/crtc6845.h"
static UINT8* ssingles_vram;
static tilemap *ssingles_tilemap;
static UINT8 *ssingles_vram;
static UINT8 prot_data;
static const crtc6845_interface crtc6845_intf =
{
0,
1000000, /* the clock of the chip - guess */
8,
NULL,
NULL,
NULL,
NULL
};
static TILE_GET_INFO( get_tile_info )
{
int code = ssingles_vram[tile_index]+256*(ssingles_vram[tile_index+0x800]);
SET_TILE_INFO(
0,
code,
0,
0);
}
static WRITE8_HANDLER(ssingles_vram_w)
{
@ -51,53 +55,31 @@ static WRITE8_HANDLER(ssingles_vram_w)
static VIDEO_START(ssingles)
{
ssingles_tilemap = tilemap_create( get_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,16,16,18,113 ); //smaller than 113
crtc6845_config(0, &crtc6845_intf);
}
static VIDEO_UPDATE(ssingles)
{
int x,y;
int addr=0;
for(y=0;y<32;y++)
{
for(x=0;x<18;x++)
{
int code=ssingles_vram[addr]+256*(ssingles_vram[addr+0x800]&3);
addr++;
drawgfx(bitmap,machine->gfx[0],
code,
0,
0,0,
x<<4, y<<4,
0,TRANSPARENCY_NONE,0);
}
}
tilemap_mark_all_tiles_dirty(ssingles_tilemap);
tilemap_draw(bitmap,cliprect,ssingles_tilemap,TILEMAP_DRAW_OPAQUE,0);
return 0;
}
static READ8_HANDLER(prot_r)
static READ8_HANDLER(c000_r)
{
int address=activecpu_get_pc();
switch(address)
{
case 0x638c:
case 0x638e: return 0; // not used = device reset /clear ?
case 0x6392: return 0x80; //1st check
case 0x639c: return 0xc4; //2nd check
default: logerror("unk protection read @ %x\n",address);
}
return 0;
return prot_data;
}
static WRITE8_HANDLER(prot_w)
static READ8_HANDLER(c001_r)
{
int address=activecpu_get_pc();
switch(address)
{
case 0x6390:
case 0x639a: break;// do nothing
default: logerror("unk protection write %x @ %x\n",data,address);
}
prot_data=0xc4;
return 0;
}
static WRITE8_HANDLER(c001_w)
{
prot_data^=data^0x11;
}
static READ8_HANDLER(controls_r)
@ -118,7 +100,8 @@ static READ8_HANDLER(controls_r)
static ADDRESS_MAP_START( ssingles_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x1fff) AM_READ( MRA8_ROM ) AM_WRITE(ssingles_vram_w)
AM_RANGE(0xc000, 0xc001) AM_READWRITE( prot_r, prot_w ) //protection
AM_RANGE(0xc000, 0xc000) AM_READ( c000_r )
AM_RANGE(0xc001, 0xc001) AM_READWRITE( c001_r, c001_w )
AM_RANGE(0x6000, 0xbfff) AM_ROM
AM_RANGE(0xf800, 0xffff) AM_RAM
ADDRESS_MAP_END
@ -133,8 +116,10 @@ static ADDRESS_MAP_START( ssingles_io_map, ADDRESS_SPACE_IO, 8 )
AM_RANGE(0x16, 0x16) AM_READ(input_port_2_r)
AM_RANGE(0x18, 0x18) AM_READ(input_port_3_r)
AM_RANGE(0x1c, 0x1c) AM_READ(controls_r)
AM_RANGE(0x1a, 0x1a) AM_WRITENOP
AM_RANGE(0xfe, 0xff) AM_WRITENOP
AM_RANGE(0x1a, 0x1a) AM_WRITENOP //video related
AM_RANGE(0xfe, 0xfe) AM_WRITE(crtc6845_address_w)
AM_RANGE(0xff, 0xff) AM_WRITE(crtc6845_register_w)
ADDRESS_MAP_END
static INPUT_PORTS_START( ssingles )
@ -223,19 +208,21 @@ static GFXDECODE_START( ssingles )
GFXDECODE_ENTRY( REGION_GFX1, 0, charlayout, 0x0000, 1 )
GFXDECODE_END
static MACHINE_DRIVER_START( ssingles )
MDRV_CPU_ADD(Z80,4000000) /* ? MHz */
MDRV_CPU_PROGRAM_MAP(ssingles_map,0)
MDRV_CPU_IO_MAP(ssingles_io_map,0)
MDRV_CPU_VBLANK_INT(nmi_line_pulse,1)
MDRV_SCREEN_REFRESH_RATE(60)
MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER )
MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
MDRV_SCREEN_SIZE(288, 288)
MDRV_SCREEN_SIZE(512, 256)
MDRV_SCREEN_VISIBLE_AREA(0*8, 288-1, 0*8, 224-1)
MDRV_SCREEN_VISIBLE_AREA(0, 511, 0, 255)
MDRV_GFXDECODE(ssingles)
MDRV_PALETTE_LENGTH(16*4) //guess
@ -267,7 +254,7 @@ ROM_START( ssingles )
ROM_LOAD( "11.bin", 0x8000, 0x4000, CRC(f7107b29) SHA1(a405926fd3cb4b3d2a1c705dcde25d961dba5884) )
ROM_LOAD( "12.bin", 0xc000, 0x4000, CRC(e5585a93) SHA1(04d55699b56d869066f2be2c6ac48042aa6c3108) )
ROM_REGION( 0x08000, REGION_USER1, 0 ) /* samples ? */
ROM_REGION( 0x010000, REGION_USER1, 0) /* samples ? */
ROM_LOAD( "5.bin", 0x00000, 0x2000, CRC(242a8dda) SHA1(e140893cc05fb8cee75904d98b02626f2565ed1b) )
ROM_LOAD( "6.bin", 0x02000, 0x2000, CRC(85ab8aab) SHA1(566f034e1ba23382442f27457447133a0e0f1cfc) )
ROM_LOAD( "7.bin", 0x04000, 0x2000, CRC(57cc112d) SHA1(fc861c58ae39503497f04d302a9f16fca19b37fb) )