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Minor notes, nw

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This commit is contained in:
Angelo Salese 2011-08-21 19:39:33 +00:00
parent 4261da17d8
commit 6da815205e
3 changed files with 19 additions and 7 deletions
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8
src/emu/cpu/m68000/m68k_in.c
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@ -4365,8 +4365,8 @@ M68KMAKE_OP(cpbcc, 32, ., .)
{ {
if(CPU_TYPE_IS_EC020_PLUS(m68k->cpu_type)) if(CPU_TYPE_IS_EC020_PLUS(m68k->cpu_type))
{ {
//logerror("%s at %08x: called unimplemented instruction %04x (cpbcc)\n", logerror("%s at %08x: called unimplemented instruction %04x (cpbcc)\n",
// m68k->device->tag(), REG_PC - 2, m68k->ir); m68k->device->tag(), REG_PC - 2, m68k->ir);
return; return;
} }
m68ki_exception_1111(m68k); m68ki_exception_1111(m68k);
@ -4413,8 +4413,8 @@ M68KMAKE_OP(cptrapcc, 32, ., .)
{ {
if(CPU_TYPE_IS_EC020_PLUS(m68k->cpu_type)) if(CPU_TYPE_IS_EC020_PLUS(m68k->cpu_type))
{ {
//logerror("%s at %08x: called unimplemented instruction %04x (cptrapcc)\n", logerror("%s at %08x: called unimplemented instruction %04x (cptrapcc)\n",
// m68k->device->tag(), REG_PC - 2, m68k->ir); m68k->device->tag(), REG_PC - 2, m68k->ir);
return; return;
} }
m68ki_exception_1111(m68k); m68ki_exception_1111(m68k);

1
src/mame/drivers/taitojc.c
View File

@ -340,6 +340,7 @@ Notes:
TODO: TODO:
- dendeg2 hangs on init step 10. - dendeg2 hangs on init step 10.
- dendeg intro object RAM usage looks suspicious (needs reference)
- landgear has some weird crashes (after playing one round, after a couple of loops in attract mode) (needs testing -AS) - landgear has some weird crashes (after playing one round, after a couple of loops in attract mode) (needs testing -AS)
- landgear has huge 3d problems on gameplay (CPU comms?) - landgear has huge 3d problems on gameplay (CPU comms?)
- dendeg2x usually crashes when starting the game (lots of read and writes to invalid addresses). - dendeg2x usually crashes when starting the game (lots of read and writes to invalid addresses).

17
src/mame/video/taitojc.c
View File

@ -81,10 +81,19 @@ WRITE32_HANDLER(taitojc_char_w)
/* /*
Object RAM is grouped in three different banks (0-0x400 / 0x400-0x800 / 0x800-0xc00), Object RAM is grouped in three different banks (0-0x400 / 0x400-0x800 / 0x800-0xc00),
Initial 6 dwords of each bank aren't for object stuff (individual vregs for each bank?) Initial 6 dwords aren't surely for object stuff (setting global object flags?)
0xc00-0xfbf seems to be a clut, while 0xfc0-0xfff is global vregs. 0xfc6 bit 13 is used to swap between 0xd00-0xdff seems to be a per-bank vregister. Usage of this is mostly unknown, the only
bank 0 and bank 1 clue we have so far is this config change in dendeg:
0x2000db3f 0x3f3f3f3f 0xfec00090 0x403f00ff 0xd20-0xd2f on Taito logo
0x2000db3f 0x3f3f3f3f 0xff600090 0x207f00ff 0xd20-0xd2f on intro FMV
dword 0 bits 14-15 looks up to the object RAM for the given bank. (it's mostly fixed to 0,
1 and 2 for each bank). Then dwords 2 and 3 should presumably configure bank 1 to a bigger
(doubled?) height and width and a different x/y start point.
0xfc0-0xfff is global vregs. 0xfc6 bit 13 is used to swap between bank 0 and bank 1.
It's unknown at current time how bank 2 should show up. It's unknown at current time how bank 2 should show up.
*/ */
static void draw_object(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, UINT32 w1, UINT32 w2) static void draw_object(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, UINT32 w1, UINT32 w2)
@ -243,6 +252,8 @@ SCREEN_UPDATE( taitojc )
if((state->m_objlist[0xfc4/4] & 0x0000ffff) != 0x0000 && (state->m_objlist[0xfc4/4] & 0x0000ffff) != 0x2000 && (state->m_objlist[0xfc4/4] & 0x0000ffff) != 0xf000 ) if((state->m_objlist[0xfc4/4] & 0x0000ffff) != 0x0000 && (state->m_objlist[0xfc4/4] & 0x0000ffff) != 0x2000 && (state->m_objlist[0xfc4/4] & 0x0000ffff) != 0xf000 )
popmessage("%08x, contact MAMEdev",state->m_objlist[0xfc4/4]); popmessage("%08x, contact MAMEdev",state->m_objlist[0xfc4/4]);
popmessage("%08x %08x %08x %08x",state->m_objlist[0xd20/4],state->m_objlist[0xd24/4],state->m_objlist[0xd28/4],state->m_objlist[0xd2c/4]);
for (i=start_offs-2; i >= (start_offs-0x400/4); i-=2) for (i=start_offs-2; i >= (start_offs-0x400/4); i-=2)
{ {
UINT32 w1 = state->m_objlist[i + 0]; UINT32 w1 = state->m_objlist[i + 0];