mirror of
https://github.com/holub/mame
synced 2025-06-05 20:33:45 +03:00
Made MPU4Vid chips properly 8-bit where possible, still doesn't fix 6850 issues though, but does fix CHR regression (nw)
This commit is contained in:
James Wallace
parent
0159e86b73
commit
d206a635dc
@ -195,7 +195,7 @@ TODO:
|
||||
#include "crmaze2p.lh"
|
||||
#include "crmaze4p.lh"
|
||||
#include "includes/mpu4.h"
|
||||
#include "cpu/m68000/m68000.h"
|
||||
#include "cpu/m68000/m68000.h"
|
||||
|
||||
|
||||
struct ef9369_t
|
||||
@ -289,14 +289,12 @@ public:
|
||||
DECLARE_WRITE_LINE_MEMBER(update_mpu68_interrupts);
|
||||
DECLARE_READ16_MEMBER( mpu4_vid_vidram_r );
|
||||
DECLARE_WRITE16_MEMBER( mpu4_vid_vidram_w );
|
||||
DECLARE_WRITE16_MEMBER( ef9369_w );
|
||||
DECLARE_READ16_MEMBER( ef9369_r );
|
||||
DECLARE_WRITE16_MEMBER( bt471_w );
|
||||
DECLARE_READ16_MEMBER( bt471_r );
|
||||
DECLARE_WRITE16_MEMBER( characteriser16_w );
|
||||
DECLARE_READ16_MEMBER( characteriser16_r );
|
||||
DECLARE_WRITE16_MEMBER( bwb_characteriser16_w );
|
||||
DECLARE_READ16_MEMBER( bwb_characteriser16_r );
|
||||
DECLARE_WRITE8_MEMBER( ef9369_w );
|
||||
DECLARE_READ8_MEMBER( ef9369_r );
|
||||
DECLARE_WRITE8_MEMBER( bt471_w );
|
||||
DECLARE_READ8_MEMBER( bt471_r );
|
||||
DECLARE_WRITE8_MEMBER( vidcharacteriser_w );
|
||||
DECLARE_READ8_MEMBER( vidcharacteriser_r );
|
||||
DECLARE_WRITE_LINE_MEMBER(mpu_video_reset);
|
||||
};
|
||||
|
||||
@ -491,10 +489,9 @@ VIDEO_START_MEMBER(mpu4vid_state,mpu4_vid)
|
||||
|
||||
/* Non-multiplexed mode */
|
||||
|
||||
WRITE16_MEMBER(mpu4vid_state::ef9369_w )
|
||||
WRITE8_MEMBER(mpu4vid_state::ef9369_w )
|
||||
{
|
||||
struct ef9369_t &pal = m_pal;
|
||||
data &= 0x00ff;
|
||||
|
||||
/* Address register */
|
||||
if (offset & 1)
|
||||
@ -532,22 +529,25 @@ WRITE16_MEMBER(mpu4vid_state::ef9369_w )
|
||||
}
|
||||
|
||||
|
||||
READ16_MEMBER(mpu4vid_state::ef9369_r )
|
||||
READ8_MEMBER(mpu4vid_state::ef9369_r )
|
||||
{
|
||||
struct ef9369_t &pal = m_pal;
|
||||
if ((offset & 1) == 0)
|
||||
{
|
||||
UINT16 col = pal.clut[pal.addr >> 1];
|
||||
|
||||
if ((pal.addr & 1) == 0)
|
||||
/* if ((pal.addr & 1) == 0)
|
||||
return col & 0xff;
|
||||
else
|
||||
return col >> 8;
|
||||
*/
|
||||
|
||||
return col;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Address register is write only */
|
||||
return 0xffff;
|
||||
return 0xff;
|
||||
}
|
||||
}
|
||||
|
||||
@ -568,19 +568,15 @@ READ16_MEMBER(mpu4vid_state::ef9369_r )
|
||||
* 1 0 1 Overlay register
|
||||
*/
|
||||
|
||||
WRITE16_MEMBER(mpu4vid_state::bt471_w )
|
||||
WRITE8_MEMBER(mpu4vid_state::bt471_w )
|
||||
{
|
||||
struct bt471_t &bt471 = m_bt471;
|
||||
UINT8 val = data & 0xff;
|
||||
{
|
||||
popmessage("Bt471: Unhandled write access (offset:%x, data:%x)", offset, val);
|
||||
}
|
||||
|
||||
switch (offset)
|
||||
{
|
||||
case 0x0:
|
||||
{
|
||||
bt471.address = val;
|
||||
bt471.address = data;
|
||||
bt471.addr_cnt = 0;
|
||||
break;
|
||||
}
|
||||
@ -589,7 +585,7 @@ WRITE16_MEMBER(mpu4vid_state::bt471_w )
|
||||
UINT8 *addr_cnt = &bt471.addr_cnt;
|
||||
rgb_t *color = &bt471.color;
|
||||
|
||||
color[*addr_cnt] = val;
|
||||
color[*addr_cnt] = data;
|
||||
|
||||
if (++*addr_cnt == 3)
|
||||
{
|
||||
@ -603,18 +599,18 @@ WRITE16_MEMBER(mpu4vid_state::bt471_w )
|
||||
}
|
||||
case 0x2:
|
||||
{
|
||||
bt471.pixmask = val;
|
||||
bt471.pixmask = data;
|
||||
break;
|
||||
}
|
||||
|
||||
// default:
|
||||
default:
|
||||
{
|
||||
popmessage("Bt471: Unhandled write access (offset:%x, data:%x)", offset, val);
|
||||
popmessage("Bt471: Unhandled write access (offset:%x, data:%x)", offset, data);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
READ16_MEMBER(mpu4vid_state::bt471_r )
|
||||
READ8_MEMBER(mpu4vid_state::bt471_r )
|
||||
{
|
||||
popmessage("Bt471: Unhandled read access (offset:%x)", offset);
|
||||
return 0;
|
||||
@ -1290,17 +1286,17 @@ static ADDRESS_MAP_START( mpu4_68k_map, AS_PROGRAM, 16, mpu4vid_state )
|
||||
// AM_RANGE(0x810000, 0x81ffff) AM_RAM /* ? */
|
||||
AM_RANGE(0x900000, 0x900001) AM_DEVWRITE8("saa", saa1099_device, saa1099_data_w, 0x00ff)
|
||||
AM_RANGE(0x900002, 0x900003) AM_DEVWRITE8("saa", saa1099_device, saa1099_control_w, 0x00ff)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE(ef9369_r, ef9369_w)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE8(ef9369_r, ef9369_w,0x00ff)
|
||||
/* AM_RANGE(0xa00004, 0xa0000f) AM_READWRITE(mpu4_vid_unmap_r, mpu4_vid_unmap_w) */
|
||||
|
||||
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w)
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE8("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w,0x00ff)
|
||||
|
||||
AM_RANGE(0xc00000, 0xc1ffff) AM_READWRITE(mpu4_vid_vidram_r, mpu4_vid_vidram_w) AM_SHARE("vid_vidram")
|
||||
AM_RANGE(0xff8000, 0xff8001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0xff)
|
||||
AM_RANGE(0xff8002, 0xff8003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0xff)
|
||||
AM_RANGE(0xff9000, 0xff900f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0xff)
|
||||
AM_RANGE(0xffd000, 0xffd00f) AM_READWRITE(characteriser16_r, characteriser16_w)
|
||||
AM_RANGE(0xff8000, 0xff8001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0x00ff)
|
||||
AM_RANGE(0xff8002, 0xff8003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0x00ff)
|
||||
AM_RANGE(0xff9000, 0xff900f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0x00ff)
|
||||
AM_RANGE(0xffd000, 0xffd00f) AM_READWRITE8(vidcharacteriser_r, vidcharacteriser_w,0x00ff)
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START( mpu4oki_68k_map, AS_PROGRAM, 16, mpu4vid_state )
|
||||
@ -1310,18 +1306,18 @@ static ADDRESS_MAP_START( mpu4oki_68k_map, AS_PROGRAM, 16, mpu4vid_state )
|
||||
AM_RANGE(0x800000, 0x80ffff) AM_RAM AM_SHARE("vid_mainram")
|
||||
AM_RANGE(0x900000, 0x900001) AM_DEVWRITE8("saa", saa1099_device, saa1099_data_w, 0x00ff)
|
||||
AM_RANGE(0x900002, 0x900003) AM_DEVWRITE8("saa", saa1099_device, saa1099_control_w, 0x00ff)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE(ef9369_r, ef9369_w)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE8(ef9369_r, ef9369_w,0x00ff)
|
||||
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w)
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE8("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w,0x00ff)
|
||||
|
||||
AM_RANGE(0xc00000, 0xc1ffff) AM_READWRITE(mpu4_vid_vidram_r, mpu4_vid_vidram_w) AM_SHARE("vid_vidram")
|
||||
AM_RANGE(0xff8000, 0xff8001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0xff)
|
||||
AM_RANGE(0xff8002, 0xff8003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0xff)
|
||||
AM_RANGE(0xff9000, 0xff900f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0xff)
|
||||
AM_RANGE(0xffa040, 0xffa04f) AM_DEVREAD8("ptm_ic3ss", ptm6840_device, read,0xff) // 6840PTM on sampled sound board
|
||||
AM_RANGE(0xff8000, 0xff8001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0x00ff)
|
||||
AM_RANGE(0xff8002, 0xff8003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0x00ff)
|
||||
AM_RANGE(0xff9000, 0xff900f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0x00ff)
|
||||
AM_RANGE(0xffa040, 0xffa04f) AM_DEVREAD8("ptm_ic3ss", ptm6840_device, read,0x00ff) // 6840PTM on sampled sound board
|
||||
AM_RANGE(0xffa040, 0xffa04f) AM_WRITE8(ic3ss_w,0x00ff) // 6840PTM on sampled sound board
|
||||
AM_RANGE(0xffa060, 0xffa067) AM_DEVREADWRITE8("pia_ic4ss", pia6821_device, read, write,0x00ff) // PIA6821 on sampled sound board
|
||||
AM_RANGE(0xffd000, 0xffd00f) AM_READWRITE(characteriser16_r, characteriser16_w)
|
||||
AM_RANGE(0xffd000, 0xffd00f) AM_READWRITE8(vidcharacteriser_r, vidcharacteriser_w, 0x00ff)
|
||||
// AM_RANGE(0xfff000, 0xffffff) AM_NOP /* Possible bug, reads and writes here */
|
||||
ADDRESS_MAP_END
|
||||
|
||||
@ -1332,15 +1328,15 @@ static ADDRESS_MAP_START( bwbvid_68k_map, AS_PROGRAM, 16, mpu4vid_state )
|
||||
AM_RANGE(0x810000, 0x81ffff) AM_RAM /* ? */
|
||||
AM_RANGE(0x900000, 0x900001) AM_DEVWRITE8("saa", saa1099_device, saa1099_data_w, 0x00ff)
|
||||
AM_RANGE(0x900002, 0x900003) AM_DEVWRITE8("saa", saa1099_device, saa1099_control_w, 0x00ff)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE(ef9369_r, ef9369_w)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE8(ef9369_r, ef9369_w,0x00ff)
|
||||
// AM_RANGE(0xa00000, 0xa0000f) AM_READWRITE(bt471_r,bt471_w) //Some games use this
|
||||
/* AM_RANGE(0xa00004, 0xa0000f) AM_READWRITE(mpu4_vid_unmap_r, mpu4_vid_unmap_w) */
|
||||
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w)
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE8("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w,0x00ff)
|
||||
AM_RANGE(0xc00000, 0xc1ffff) AM_READWRITE(mpu4_vid_vidram_r, mpu4_vid_vidram_w) AM_SHARE("vid_vidram")
|
||||
AM_RANGE(0xe00000, 0xe00001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0xff)
|
||||
AM_RANGE(0xe00002, 0xe00003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0xff)
|
||||
AM_RANGE(0xe01000, 0xe0100f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0xff)
|
||||
AM_RANGE(0xe00000, 0xe00001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0x00ff)
|
||||
AM_RANGE(0xe00002, 0xe00003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0x00ff)
|
||||
AM_RANGE(0xe01000, 0xe0100f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0x00ff)
|
||||
//AM_RANGE(0xa00004, 0xa0000f) AM_READWRITE(bwb_characteriser16_r, bwb_characteriser16_w)//AM_READWRITE(adpcm_r, adpcm_w) CHR ?
|
||||
ADDRESS_MAP_END
|
||||
|
||||
@ -1350,19 +1346,19 @@ static ADDRESS_MAP_START( bwbvid5_68k_map, AS_PROGRAM, 16, mpu4vid_state )
|
||||
AM_RANGE(0x810000, 0x81ffff) AM_RAM /* ? */
|
||||
AM_RANGE(0x900000, 0x900001) AM_DEVWRITE8("saa", saa1099_device, saa1099_data_w, 0x00ff)
|
||||
AM_RANGE(0x900002, 0x900003) AM_DEVWRITE8("saa", saa1099_device, saa1099_control_w, 0x00ff)
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE(ef9369_r, ef9369_w)
|
||||
//AM_RANGE(0xa00000, 0xa00003) AM_READWRITE(bt471_r,bt471_w) Some games use this
|
||||
AM_RANGE(0xa00000, 0xa00003) AM_READWRITE8(ef9369_r, ef9369_w,0x00ff)
|
||||
//AM_RANGE(0xa00000, 0xa00003) AM_READWRITE8(bt471_r,bt471_w,0x00ff) Some games use this
|
||||
/* AM_RANGE(0xa00004, 0xa0000f) AM_READWRITE(mpu4_vid_unmap_r, mpu4_vid_unmap_w) */
|
||||
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w)
|
||||
AM_RANGE(0xb00000, 0xb0000f) AM_DEVREADWRITE8("scn2674_vid", scn2674_device, mpu4_vid_scn2674_r, mpu4_vid_scn2674_w,0x00ff)
|
||||
AM_RANGE(0xc00000, 0xc1ffff) AM_READWRITE(mpu4_vid_vidram_r, mpu4_vid_vidram_w) AM_SHARE("vid_vidram")
|
||||
AM_RANGE(0xe00000, 0xe00001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0xff)
|
||||
AM_RANGE(0xe00002, 0xe00003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0xff)
|
||||
AM_RANGE(0xe00000, 0xe00001) AM_DEVREADWRITE8("acia6850_1", acia6850_device, status_r, control_w, 0x00ff)
|
||||
AM_RANGE(0xe00002, 0xe00003) AM_DEVREADWRITE8("acia6850_1", acia6850_device, data_r, data_w, 0x00ff)
|
||||
AM_RANGE(0xe01000, 0xe0100f) AM_DEVREADWRITE8("6840ptm_68k", ptm6840_device, read, write, 0x00ff)
|
||||
AM_RANGE(0xe02000, 0xe02007) AM_DEVREADWRITE8("pia_ic4ss", pia6821_device, read, write, 0xff00)
|
||||
AM_RANGE(0xe02000, 0xe02007) AM_DEVREADWRITE8("pia_ic4ss", pia6821_device, read, write, 0xff00) //Seems odd...
|
||||
AM_RANGE(0xe03000, 0xe0300f) AM_DEVREAD8("ptm_ic3ss", ptm6840_device, read,0xff00) // 6840PTM on sampled sound board
|
||||
AM_RANGE(0xe03000, 0xe0300f) AM_WRITE8(ic3ss_w,0xff00) // 6840PTM on sampled sound board
|
||||
AM_RANGE(0xe04000, 0xe0400f) AM_READWRITE(bwb_characteriser16_r, bwb_characteriser16_w)//AM_READWRITE(adpcm_r, adpcm_w) CHR ?
|
||||
AM_RANGE(0xe04000, 0xe0400f) AM_READWRITE8(bwb_characteriser_r, bwb_characteriser_w, 0x00ff)//AM_READWRITE(adpcm_r, adpcm_w) CHR ?
|
||||
ADDRESS_MAP_END
|
||||
|
||||
|
||||
@ -1504,7 +1500,7 @@ Characteriser (CHR)
|
||||
the 'challenge' part of the startup check is always the same
|
||||
*/
|
||||
|
||||
WRITE16_MEMBER(mpu4vid_state::characteriser16_w )
|
||||
WRITE8_MEMBER(mpu4vid_state::vidcharacteriser_w )
|
||||
{
|
||||
int x;
|
||||
int call=(data&0xff);
|
||||
@ -1535,7 +1531,7 @@ WRITE16_MEMBER(mpu4vid_state::characteriser16_w )
|
||||
}
|
||||
|
||||
|
||||
READ16_MEMBER(mpu4vid_state::characteriser16_r )
|
||||
READ8_MEMBER(mpu4vid_state::vidcharacteriser_r )
|
||||
{
|
||||
LOG_CHR_FULL(("%04x Characteriser read offset %02X,data %02X", space.device().safe_pcbase(),offset,m_current_chr_table[m_prot_col].response));
|
||||
LOG_CHR(("Characteriser read offset %02X \n",offset));
|
||||
@ -1558,99 +1554,6 @@ READ16_MEMBER(mpu4vid_state::characteriser16_r )
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
BwB Characteriser (CHR)
|
||||
|
||||
The BwB method of protection is considerably different to the Barcrest one, with any
|
||||
incorrect behaviour manifesting in ridiculously large payouts.
|
||||
|
||||
In fact, the software seems deliberately designed to mislead, but is (fortunately for
|
||||
us) prone to similar weaknesses that allow a per game solution.
|
||||
|
||||
See mpu4hw.c for more info
|
||||
|
||||
As BwB games aren't yet booting on the 16-bit board, we're duplicating the 8-bit program
|
||||
Precedent suggests this is not that dangerous an assumption to make.
|
||||
*/
|
||||
|
||||
|
||||
WRITE16_MEMBER(mpu4vid_state::bwb_characteriser16_w )
|
||||
{
|
||||
int x;
|
||||
int call=(data &0xff);
|
||||
LOG_CHR_FULL(("%04x Characteriser write offset %02X data %02X \n", space.device().safe_pcbase(),offset,data));
|
||||
if (!m_current_chr_table)
|
||||
{
|
||||
logerror("No Characteriser Table @ %04x\n", space.device().safe_pcbase());
|
||||
return;
|
||||
}
|
||||
|
||||
if (offset == 0)
|
||||
{
|
||||
if (!m_chr_state)
|
||||
{
|
||||
m_chr_state=1;
|
||||
m_chr_counter=0;
|
||||
}
|
||||
if (call == 0)
|
||||
{
|
||||
m_init_col ++;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_init_col =0;
|
||||
}
|
||||
}
|
||||
m_chr_value = space.machine().rand();
|
||||
for (x = 0; x < 4; x++)
|
||||
{
|
||||
if (m_current_chr_table[(x)].call == call)
|
||||
{
|
||||
if (x == 0) // reinit
|
||||
{
|
||||
m_bwb_return = 0;
|
||||
}
|
||||
m_chr_value = bwb_chr_table_common[(m_bwb_return)];
|
||||
m_bwb_return++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
READ16_MEMBER(mpu4vid_state::bwb_characteriser16_r )
|
||||
{
|
||||
LOG_CHR(("Characteriser read offset %02X \n",offset));
|
||||
|
||||
|
||||
if (offset ==0)
|
||||
{
|
||||
switch (m_chr_counter)
|
||||
{
|
||||
case 6:
|
||||
case 13:
|
||||
case 20:
|
||||
case 27:
|
||||
case 34:
|
||||
{
|
||||
return m_bwb_chr_table1[(((m_chr_counter + 1) / 7) - 1)].response;
|
||||
}
|
||||
default:
|
||||
{
|
||||
if (m_chr_counter > 34)
|
||||
{
|
||||
m_chr_counter = 35;
|
||||
m_chr_state = 2;
|
||||
}
|
||||
m_chr_counter ++;
|
||||
return m_chr_value;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
return m_chr_value;
|
||||
}
|
||||
}
|
||||
|
||||
static mpu4_chr_table adders_data[64] = {
|
||||
{0x00, 0x00}, {0x1A, 0x8C}, {0x04, 0x64}, {0x10, 0x84}, {0x18, 0x84}, {0x0F, 0xC4}, {0x13, 0x84}, {0x1B, 0x84},
|
||||
|
||||
@ -496,7 +496,7 @@ void scn2674_device::scn2674_write_command(running_machine &machine, UINT8 data)
|
||||
}
|
||||
|
||||
|
||||
READ16_MEMBER( scn2674_device::mpu4_vid_scn2674_r )
|
||||
READ8_MEMBER( scn2674_device::mpu4_vid_scn2674_r )
|
||||
{
|
||||
/*
|
||||
Offset: Purpose
|
||||
@ -541,11 +541,11 @@ READ16_MEMBER( scn2674_device::mpu4_vid_scn2674_r )
|
||||
case 7: LOG2674(("Read Screen2_h Register %06x\n",space.device().safe_pc()));return m_scn2674_screen2_h;
|
||||
}
|
||||
|
||||
return 0xffff;
|
||||
return 0xff;
|
||||
}
|
||||
|
||||
|
||||
WRITE16_MEMBER( scn2674_device::mpu4_vid_scn2674_w )
|
||||
WRITE8_MEMBER( scn2674_device::mpu4_vid_scn2674_w )
|
||||
{
|
||||
/*
|
||||
Offset: Purpose
|
||||
@ -559,8 +559,6 @@ WRITE16_MEMBER( scn2674_device::mpu4_vid_scn2674_w )
|
||||
7 Screen Start 2 Upper Register
|
||||
*/
|
||||
|
||||
data &=0x00ff; /* it's an 8-bit chip on a 16-bit board, feel the cheapness. */
|
||||
|
||||
switch (offset)
|
||||
{
|
||||
case 0:
|
||||
|
||||
@ -31,8 +31,8 @@ public:
|
||||
}
|
||||
// int m_gfx_index;
|
||||
|
||||
DECLARE_READ16_MEMBER( mpu4_vid_scn2674_r );
|
||||
DECLARE_WRITE16_MEMBER( mpu4_vid_scn2674_w );
|
||||
DECLARE_READ8_MEMBER( mpu4_vid_scn2674_r );
|
||||
DECLARE_WRITE8_MEMBER( mpu4_vid_scn2674_w );
|
||||
|
||||
UINT8 get_irq_state( void )
|
||||
{
|
||||
|
||||
Loading…
Reference in New Issue
Block a user