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Implemented flip screen support

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This commit is contained in:
Angelo Salese 2009-12-27 17:56:12 +00:00
parent 6f336fd7a6
commit 9fc457fa31
1 changed files with 30 additions and 6 deletions
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30
src/mame/drivers/cyclemb.c
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@ -112,6 +112,7 @@ static VIDEO_UPDATE( cyclemb )
{ {
int x,y,count; int x,y,count;
const gfx_element *gfx = screen->machine->gfx[0]; const gfx_element *gfx = screen->machine->gfx[0];
UINT8 flip_screen = flip_screen_get(screen->machine);
count = 0; count = 0;
@ -123,11 +124,21 @@ static VIDEO_UPDATE( cyclemb )
int tile = (cyclemb_vram[count]) | ((attr & 3)<<8); int tile = (cyclemb_vram[count]) | ((attr & 3)<<8);
int color = ((attr & 0xf8) >> 3) ^ 0x1f; int color = ((attr & 0xf8) >> 3) ^ 0x1f;
int odd_line = y & 1 ? 0x40 : 0x00; int odd_line = y & 1 ? 0x40 : 0x00;
// int sx_offs = flip_screen ? 512 : 0
int scrollx = ((cyclemb_vram[(y/2)+odd_line]) + (cyclemb_cram[(y/2)+odd_line]<<8) + 48) & 0x1ff; int scrollx = ((cyclemb_vram[(y/2)+odd_line]) + (cyclemb_cram[(y/2)+odd_line]<<8) + 48) & 0x1ff;
if(flip_screen)
{
drawgfx_opaque(bitmap,cliprect,gfx,tile,color,1,1,512-(x*8)-scrollx,256-(y*8));
/* wrap-around */
drawgfx_opaque(bitmap,cliprect,gfx,tile,color,1,1,512-(x*8)-scrollx+512,256-(y*8));
}
else
{
drawgfx_opaque(bitmap,cliprect,gfx,tile,color,0,0,(x*8)-scrollx,(y*8)); drawgfx_opaque(bitmap,cliprect,gfx,tile,color,0,0,(x*8)-scrollx,(y*8));
/* wrap-around */ /* wrap-around */
drawgfx_opaque(bitmap,cliprect,gfx,tile,color,0,0,(x*8)-scrollx+512,(y*8)); drawgfx_opaque(bitmap,cliprect,gfx,tile,color,0,0,(x*8)-scrollx+512,(y*8));
}
count++; count++;
} }
@ -175,8 +186,14 @@ static VIDEO_UPDATE( cyclemb )
x+=256; x+=256;
//if(cyclemb_obj3_ram[i+1] & 2) //if(cyclemb_obj3_ram[i+1] & 2)
// x-=256; // x-=256;
fx = cyclemb_obj3_ram[i+0] & 4; fx = (cyclemb_obj3_ram[i+0] & 4) >> 2;
fy = cyclemb_obj3_ram[i+0] & 8; fy = (cyclemb_obj3_ram[i+0] & 8) >> 3;
if(flip_screen)
{
fx = !fx;
fy = !fy;
}
drawgfx_transpen(bitmap,cliprect,screen->machine->gfx[region],spr_offs,col,fx,fy,x,y,0); drawgfx_transpen(bitmap,cliprect,screen->machine->gfx[region],spr_offs,col,fx,fy,x,y,0);
} }
} }
@ -211,6 +228,13 @@ static WRITE8_HANDLER( sound_cmd_w ) //actually ciom
} }
#endif #endif
static WRITE8_HANDLER( cyclemb_flip_w )
{
flip_screen_set(space->machine, data & 1);
// a bunch of other things are setted here
}
static ADDRESS_MAP_START( cyclemb_map, ADDRESS_SPACE_PROGRAM, 8 ) static ADDRESS_MAP_START( cyclemb_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0x0000, 0x7fff) AM_ROM AM_RANGE(0x0000, 0x7fff) AM_ROM
AM_RANGE(0x8000, 0x8fff) AM_ROMBANK("bank1") AM_RANGE(0x8000, 0x8fff) AM_ROMBANK("bank1")
@ -226,7 +250,7 @@ static ADDRESS_MAP_START( cyclemb_io, ADDRESS_SPACE_IO, 8 )
// ADDRESS_MAP_GLOBAL_MASK(0xff) // ADDRESS_MAP_GLOBAL_MASK(0xff)
AM_RANGE(0xc000, 0xc000) AM_WRITE(cyclemb_bankswitch_w) AM_RANGE(0xc000, 0xc000) AM_WRITE(cyclemb_bankswitch_w)
AM_RANGE(0xc09e, 0xc09f) AM_READWRITE(cyclemb_8741_0_r, cyclemb_8741_0_w) AM_RANGE(0xc09e, 0xc09f) AM_READWRITE(cyclemb_8741_0_r, cyclemb_8741_0_w)
AM_RANGE(0xc0bf, 0xc0bf) AM_WRITENOP //flip screen AM_RANGE(0xc0bf, 0xc0bf) AM_WRITE(cyclemb_flip_w) //flip screen
ADDRESS_MAP_END ADDRESS_MAP_END
static ADDRESS_MAP_START( cyclemb_sound_map, ADDRESS_SPACE_PROGRAM, 8 ) static ADDRESS_MAP_START( cyclemb_sound_map, ADDRESS_SPACE_PROGRAM, 8 )