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the better handling removes the need for this hack actually (nw)

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This commit is contained in:
mamehaze 2015-02-14 13:36:10 +00:00
parent 187102728f
commit ada12e8f06
1 changed files with 14 additions and 13 deletions
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27
src/mame/drivers/expro02.c
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@ -71,7 +71,7 @@ EXPRO-02
clock input on any of the pins of these chips. They're not ROMs either
because the pinout doesn't match any known EPROMs.
There are no markings on the chips other than 'GP-U27' & 'GP-U41'
If GP-U41 is removed, on bootup the PCB gives an error 'fg_ind8 ERROR' and
If GP-U41 is removed, on bootup the PCB gives an error 'BG ERROR' and
a memory address. If GP-U27 is removed, the PCB works but there are no
background graphics.
@ -255,7 +255,6 @@ public:
READ16_MEMBER(comad_timer_r);
READ8_MEMBER(comad_okim6295_r);
WRITE16_MEMBER(galpanica_6295_bankswitch_w);
WRITE16_MEMBER(clear_bg_w);
};
@ -286,7 +285,19 @@ UINT32 expro02_state::screen_update_backgrounds(screen_device &screen, bitmap_in
{
UINT16 dat = (m_expro02_bg_rgb555_pixram[count] & 0xfffe)>>1;
dat+=2048;
dest[x] = dat;
// never seen to test
//if (!(m_expro02_bg_rgb555_pixram[count] & 0x0001))
{
dest[x] = dat;
}
/*
else
{
dest[x] = 0x0000;
}
*/
count++;
}
}
@ -730,22 +741,12 @@ static ADDRESS_MAP_START( fantsia2_map, AS_PROGRAM, 16, expro02_state )
ADDRESS_MAP_END
WRITE16_MEMBER(expro02_state::clear_bg_w)
{
int i;
for(i = 0; i < 8; i++)
{
m_expro02_bg_rgb555_pixram[offset * 8 + i] = 0x0000;
}
}
static ADDRESS_MAP_START( galhustl_map, AS_PROGRAM, 16, expro02_state )
AM_RANGE(0x000000, 0x0fffff) AM_ROM
AM_RANGE(0x200000, 0x2fffff) AM_ROM AM_REGION("maincpudata", 0)
AM_RANGE(0x580000, 0x583fff) AM_RAM_WRITE(clear_bg_w) // I don't think this is correct, it would be associated with the unused VIEW02 tilemap, although this hardware could have implemented things differently as it's an original game, not a GP hack
AM_RANGE(0x800000, 0x800001) AM_READ_PORT("DSW1")
AM_RANGE(0x800002, 0x800003) AM_READ_PORT("DSW2")
AM_RANGE(0x800004, 0x800005) AM_READ_PORT("SYSTEM")