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Removed weird, address bit swapping shared RAM r/w functions with AM_SHARE

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This commit is contained in:
Zsolt Vasvari 2008-01-21 03:15:57 +00:00
parent 81a8efe80e
commit 6f14cdf61a
1 changed files with 12 additions and 24 deletions
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36
src/mame/drivers/ninjakun.c
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@ -41,20 +41,6 @@ WRITE8_HANDLER( ninjakun_flipscreen_w );
WRITE8_HANDLER( ninjakun_paletteram_w );
/******************************************************************************/
/* working RAM is shared, but an address line is inverted */
static UINT8 *shareram;
static WRITE8_HANDLER( shareram_w )
{
shareram[offset^0x400] = data;
}
static READ8_HANDLER( shareram_r )
{
return shareram[offset^0x400];
}
/*******************************************************************************
0xA000 Read / Write Handlers
*******************************************************************************/
@ -100,11 +86,12 @@ static ADDRESS_MAP_START( ninjakun_cpu1_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0xa001, 0xa001) AM_READ(input_port_1_r)
AM_RANGE(0xa002, 0xa002) AM_READWRITE(ninjakun_io_A002_r, ninjakun_cpu1_io_A002_w)
AM_RANGE(0xa003, 0xa003) AM_WRITE(ninjakun_flipscreen_w)
AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(MRA8_RAM, ninjakun_fg_videoram_w) AM_BASE(&ninjakun_fg_videoram) AM_SHARE(2)
AM_RANGE(0xc800, 0xcfff) AM_READWRITE(ninjakun_bg_videoram_r, ninjakun_bg_videoram_w) AM_BASE(&ninjakun_bg_videoram) AM_SHARE(3)
AM_RANGE(0xd000, 0xd7ff) AM_RAM AM_BASE(&spriteram) AM_SHARE(4)
AM_RANGE(0xd800, 0xd9ff) AM_READWRITE(MRA8_RAM, ninjakun_paletteram_w) AM_BASE(&paletteram) AM_SHARE(5)
AM_RANGE(0xe000, 0xe7ff) AM_RAM AM_BASE(&shareram) AM_SHARE(6)
AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(MRA8_RAM, ninjakun_fg_videoram_w) AM_BASE(&ninjakun_fg_videoram) AM_SHARE(1)
AM_RANGE(0xc800, 0xcfff) AM_READWRITE(ninjakun_bg_videoram_r, ninjakun_bg_videoram_w) AM_BASE(&ninjakun_bg_videoram) AM_SHARE(2)
AM_RANGE(0xd000, 0xd7ff) AM_RAM AM_BASE(&spriteram) AM_SHARE(3)
AM_RANGE(0xd800, 0xd9ff) AM_READWRITE(MRA8_RAM, ninjakun_paletteram_w) AM_BASE(&paletteram) AM_SHARE(4)
AM_RANGE(0xe000, 0xe3ff) AM_RAM AM_SHARE(5)
AM_RANGE(0xe400, 0xe7ff) AM_RAM AM_SHARE(6)
ADDRESS_MAP_END
static ADDRESS_MAP_START( ninjakun_cpu2_map, ADDRESS_SPACE_PROGRAM, 8 )
@ -115,11 +102,12 @@ static ADDRESS_MAP_START( ninjakun_cpu2_map, ADDRESS_SPACE_PROGRAM, 8 )
AM_RANGE(0xa001, 0xa001) AM_READ(input_port_1_r)
AM_RANGE(0xa002, 0xa002) AM_READWRITE(ninjakun_io_A002_r, ninjakun_cpu2_io_A002_w)
AM_RANGE(0xa003, 0xa003) AM_WRITE(ninjakun_flipscreen_w)
AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(MRA8_RAM, ninjakun_fg_videoram_w) AM_SHARE(2)
AM_RANGE(0xc800, 0xcfff) AM_READWRITE(ninjakun_bg_videoram_r, ninjakun_bg_videoram_w) AM_SHARE(3)
AM_RANGE(0xd000, 0xd7ff) AM_RAM AM_SHARE(4)
AM_RANGE(0xd800, 0xd9ff) AM_READWRITE(MRA8_RAM, ninjakun_paletteram_w) AM_SHARE(5)
AM_RANGE(0xe000, 0xe7ff) AM_READWRITE(shareram_r, shareram_w) AM_SHARE(6)
AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(MRA8_RAM, ninjakun_fg_videoram_w) AM_SHARE(1)
AM_RANGE(0xc800, 0xcfff) AM_READWRITE(ninjakun_bg_videoram_r, ninjakun_bg_videoram_w) AM_SHARE(2)
AM_RANGE(0xd000, 0xd7ff) AM_RAM AM_SHARE(3)
AM_RANGE(0xd800, 0xd9ff) AM_READWRITE(MRA8_RAM, ninjakun_paletteram_w) AM_SHARE(4)
AM_RANGE(0xe000, 0xe3ff) AM_RAM AM_SHARE(6) /* swapped wrt CPU1 */
AM_RANGE(0xe400, 0xe7ff) AM_RAM AM_SHARE(5) /* swapped wrt CPU1 */
ADDRESS_MAP_END
/*******************************************************************************