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Wrote down some notes regarding Tatakae Big Fighter, not worth

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This commit is contained in:
Angelo Salese 2010-12-13 20:11:48 +00:00
parent e0d59cc8b0
commit 69a3d4e809
1 changed files with 111 additions and 11 deletions
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122
src/mame/drivers/bigfghtr.c
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@ -139,7 +139,8 @@ public:
/* misc */
int read_latch;
UINT8 mcu_enabled;
UINT8 mcu_input_snippet;
UINT8 mcu_jsr_snippet;
};
@ -335,7 +336,8 @@ static WRITE16_HANDLER( sharedram_w )
switch(offset)
{
case 0x40/2:
state->mcu_enabled = (data == 0x100); // state machine value, a 3 controls something regarding the gameplay, TODO
state->mcu_input_snippet = (data == 0x100);
state->mcu_jsr_snippet = (data == 0x300);
break;
}
}
@ -344,11 +346,11 @@ static READ16_HANDLER(sharedram_r)
{
bigfghtr_state *state = space->machine->driver_data<bigfghtr_state>();
if(state->mcu_enabled)
if(state->mcu_input_snippet)
{
switch(offset)
switch(offset+0x600/2)
{
case 0x40/2:
case 0x640/2:
if(state->read_latch)
{
state->read_latch = 0;
@ -356,20 +358,118 @@ static READ16_HANDLER(sharedram_r)
}
break;
case 0x42/2:
case 0x642/2:
return (input_port_read(space->machine, "DSW0") & 0xffff) ^ 0xffff;
case 0x44/2:
case 0x644/2:
return (input_port_read(space->machine, "DSW1") & 0xffff) ^ 0xffff;
case 0x46/2:
case 0x646/2:
return (input_port_read(space->machine, "P1") & 0xffff) ^ 0xffff;
case 0x48/2:
case 0x648/2:
return (input_port_read(space->machine, "P2") & 0xffff) ^ 0xffff;
}
}
if(state->mcu_jsr_snippet)
{
switch(offset+0x600/2)
{
case 0x640/2:
if(state->read_latch)
{
state->read_latch = 0;
return mame_rand(space->machine); // TODO
}
break;
case 0x642/2:
return (input_port_read(space->machine, "DSW0") & 0xffff) ^ 0xffff;
case 0x644/2:
return (input_port_read(space->machine, "DSW1") & 0xffff) ^ 0xffff;
case 0x646/2:
return (input_port_read(space->machine, "P1") & 0xffff) ^ 0xffff;
case 0x648/2:
return (input_port_read(space->machine, "P2") & 0xffff) ^ 0xffff;
/*
protection controls where the program code should jump to.
example snippet:
00DB2A: 41FA FE86 lea (-$17a,PC), A0; ($d9b2) ;base program vector
00DB2E: 4DF9 0008 0E2A lea $80e2a.l, A6 ;base RAM vector, used by the i8751 to send the value, this value is added to the above A0
00DB34: 3039 0008 0E62 move.w $80e62.l, D0 ;number of snippets to execute
00DB3A: 6100 00F0 bsr $dc2c
*/
/* bp daee, A0 = 0xdd02, A6 = 0x808ca, D0 = 0x80902 */
//case 0x902/2:
// return 0x0001;
//case (0x90a+0x24)/2:
// return 0x0001;
//case (0x902+8)/2:
// return 0x0004; // 0xf86a
/* bp db02, A0 = 0xdc2e, A6 = 0x80912, D0 = 0x8094a */
//case 0x94a/2:
// return 1;
//case (0x94a+8)/2:
// return 0x00dc; // 0xd62e
/* bp db16, A0 = 0xda86, A6 = 0x80c22, D0 = 0x80c5a */
//case 0xc5a/2:
// return 1;
//case (0xc5a+8)/2:
// return 0x0288; // 0x345f4
/* bp db2a, A0 = 0xd9b2, A6 = 0x80e2a, D0 = 0x80e62 */
/* bp db3e, A0 = 0xd8da, A6 = 0x81132, D0 = 0x8116a */
/* bp db52, A0 = 0xd806, A6 = 0x8133a, D0 = 0x81372 */
/* bp db66, A0 = 0xd7aa, A6 = 0x81742, D0 = 0x8177a */
/* bp db7a, A0 = 0xd746, A6 = 0x81b4a, D0 = 0x81b82 */
/* bp db8e, A0 = 0xd672, A6 = 0x81f52, D0 = 0x81f8a */
/* bp dba4, A0 = 0xd5ae, A6 = 0x8205a, D0 = 0x82092 */
/* bp dbba, A0 = 0xd5be, A6 = 0x82862, D0 = 0x8289a */
/* bp dbd0, A0 = 0xd512, A6 = 0x8296a, D0 = 0x829a2 */
/* bp dbe6, A0 = 0xd466, A6 = 0x82d72, D0 = 0x82daa */
/* bp dbfc, A0 = 0xd43e, A6 = 0x8357a, D0 = 0x835b2 */
/* following is separated from the others, dunno why ... */
/* bp dc14, A0 = 0xd3aa, A6 = 0x835a2, D0 = 0x835b2 */
/*case 0x
case 0x94a/2:
return 0x0002*4;
case (0x90a+2*0x40)/2:
case (0x90a+3*0x40)/2:
return 0x0003*4;
case (0x90a+4*0x40)/2:
return 0x000c*4; // 0x13d74
case (0x90a+5*0x40)/2:
return 0x000d*4; // 0x130f6
case (0x90a+6*0x40)/2:
return 0x000e*4; // 0x1817e
case (0x90a+7*0x40)/2:
return 0x0010*4; // 0x15924
//case (0x90a+0x25)/2:
// return 2;*/
}
}
return state->sharedram[offset];
}
@ -384,8 +484,8 @@ static READ16_HANDLER( latch_r )
static ADDRESS_MAP_START( mainmem, ADDRESS_SPACE_PROGRAM, 16 )
AM_RANGE(0x000000, 0x07ffff) AM_ROM
AM_RANGE(0x080000, 0x0805ff) AM_RAM AM_BASE_SIZE_GENERIC(spriteram)
AM_RANGE(0x080600, 0x080fff) AM_READWRITE(sharedram_r, sharedram_w) AM_BASE_MEMBER(bigfghtr_state, sharedram)
AM_RANGE(0x081000, 0x085fff) AM_RAM //??
AM_RANGE(0x080600, 0x083fff) AM_READWRITE(sharedram_r, sharedram_w) AM_BASE_MEMBER(bigfghtr_state, sharedram)
AM_RANGE(0x084000, 0x085fff) AM_RAM //??
AM_RANGE(0x086000, 0x086fff) AM_RAM_WRITE(bg_videoram_w) AM_BASE_MEMBER(bigfghtr_state, bg_videoram)
AM_RANGE(0x087000, 0x087fff) AM_RAM_WRITE(fg_videoram_w) AM_BASE_MEMBER(bigfghtr_state, fg_videoram)
AM_RANGE(0x088000, 0x089fff) AM_RAM_WRITE(text_videoram_w) AM_BASE_MEMBER(bigfghtr_state, text_videoram)