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namcos23: Varied stuff, isolate PIO, pcb test works on timecrs2c [O. Galibert]

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This commit is contained in:
Olivier Galibert 2010-04-25 10:51:14 +00:00
parent 4af9943d16
commit 62cac9a037
1 changed files with 42 additions and 17 deletions
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59
src/mame/drivers/namcos23.c
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@ -32,13 +32,6 @@
- Serial number data is at offset 0x201 in the BIOS. Until the games are running
and displaying it I'm not going to meddle with it though.
- Point roms are accessed for checksumming through a port at a200000x:
- reset the port by writing 0000 to a2000006
- write offset >> 16 to a2000004
- write offset & ffff to a2000004 (yes, same address, hence the reset)
- read 2 bytes from one rom at a200000a
- read 2 bytes from one rom at a200000c
- Add the sh2 in Gunmen Wars (no rom, controls the camera)
- Super System 23 tests irqs in the post. timecrs2c's code can
@ -1184,6 +1177,7 @@ static UINT8 ctl_led;
static UINT16 ctl_inp_buffer[2];
static UINT16 c417_ram[0x10000], c417_adr = 0;
static UINT32 c417_pointrom_adr = 0;
static UINT16 c412_sdram_a[0x100000]; // Framebuffers, probably
static UINT16 c412_sdram_b[0x100000];
@ -1285,11 +1279,34 @@ static WRITE32_HANDLER( namcos23_paletteram_w )
static READ16_HANDLER(s23_c417_r)
{
switch(offset) {
/* According to timecrs2c, +0 is the status word with bits being:
15: test mode flag (huh?)
10: fifo data ready
9: cmd ram data ready
8: matrix busy
7: output unit busy (inverted)
6: hokan/tenso unit busy
5: point unit busy
4: access unit busy
3: c403 busy (inverted)
2: 2nd c435 busy (inverted)
1: 1st c435 busy (inverted)
0: xcpreq
*/
case 0: return 0x8e | (video_screen_get_vblank(space->machine->primary_screen) ? 0x0000 : 0x8000);
case 1: return c417_adr;
case 4:
// logerror("c417_r %04x = %04x (%08x, %08x)\n", c417_adr, c417_ram[c417_adr], cpu_get_pc(space->cpu), (unsigned int)cpu_get_reg(space->cpu, MIPS3_R31));
return c417_ram[c417_adr];
case 5:
if(c417_pointrom_adr >= ptrom_limit)
return 0xffff;
return ptrom[c417_pointrom_adr] >> 16;
case 6:
if(c417_pointrom_adr >= ptrom_limit)
return 0xffff;
return ptrom[c417_pointrom_adr];
}
logerror("c417_r %x @ %04x (%08x, %08x)\n", offset, mem_mask, cpu_get_pc(space->cpu), (unsigned int)cpu_get_reg(space->cpu, MIPS3_R31));
@ -1300,16 +1317,17 @@ static WRITE16_HANDLER(s23_c417_w)
{
switch(offset) {
case 0:
if (data == 1)
{
logerror("c417_w: raise IRQ 2\n");
cputag_set_input_line(space->machine, "maincpu", MIPS3_IRQ2, ASSERT_LINE);
}
break;
logerror("p3d PIO %04x\n", data);
break;
case 1:
COMBINE_DATA(&c417_adr);
break;
case 2:
c417_pointrom_adr = (c417_pointrom_adr << 16) | data;
break;
case 3:
c417_pointrom_adr = 0;
break;
case 4:
// logerror("c417_w %04x = %04x (%08x, %08x)\n", c417_adr, data, cpu_get_pc(space->cpu), (unsigned int)cpu_get_reg(space->cpu, MIPS3_R31));
COMBINE_DATA(c417_ram + c417_adr);
@ -1355,6 +1373,9 @@ static WRITE16_HANDLER(s23_c412_ram_w)
static READ16_HANDLER(s23_c412_r)
{
switch(offset) {
case 3:
// 0001 = busy, 0002 = game uploads things
return 0x0002;
case 8: return c412_adr;
case 9: return c412_adr >> 16;
case 10: return s23_c412_ram_r(space, c412_adr, mem_mask);
@ -2601,13 +2622,17 @@ static INPUT_PORTS_START( ss23 )
PORT_START("H8PORT")
// No idea if start is actually there, but we need buttons to pass error screens
// You can go to the pcb test mode by pressing start, but it crashes...
// You can go to the pcb test mode by pressing start, and it doesn't crash anymore somehow
// Use start1 to select, start1+start2 to exit, up/down to navigate
PORT_START("P1")
PORT_BIT( 0x008, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0xff7, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x200, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x040, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )
PORT_BIT( 0x080, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )
PORT_BIT( 0xd07, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("P2")
PORT_BIT( 0xfff, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0xfff, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("TC2P0")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_COIN1 )