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Implement Bram for tennoko bank. 

When it first runs, press 1,2 and 3 and it will get a bit further. no idea what the fuck it's supposed to be however, but it seems to want a card inserted somewhere. Might need proper CD support.

Also, someone might need to clean up my mess a bit, I have forgotten how to do bitmasking.
This commit is contained in:
tmaul 2012-04-14 13:17:19 +00:00
parent 92439603d9
commit 4d8676b6f8
1 changed files with 53 additions and 5 deletions
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58
src/burn/drv/pce/pce.cpp
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@ -37,6 +37,8 @@ static UINT8 *RamEnd;
static UINT8 *PCECartROM;
static UINT8 *PCECartRAM;
static UINT8 *PCEUserRAM;
static UINT8 *PCECDBRAM;
static UINT32 *DrvPalette;
UINT8 PCEPaletteRecalc;
@ -59,6 +61,8 @@ UINT8 PCEDips[3];
static UINT8 system_identify;
static INT32 pce_sf2 = 0;
static INT32 pce_sf2_bank;
static UINT8 bram_locked = 1;
INT32 PceGetZipName(char** pszName, UINT32 i)
{
@ -165,9 +169,21 @@ static void pce_write(UINT32 address, UINT8 data)
if (pce_sf2) sf2_bankswitch(address & 3);
return;
}
if ((address >= 0x1ee000) && (address <= 0x1ee7ff)) {
// bprintf(0,_T("bram write %x:%x\n"), address & 0x7ff, data );
if (!bram_locked)
{
PCECDBRAM[address & 0x7FF] = data;
}
return;
}
switch (address & ~0x3ff)
{
case 0x1fe000:
vdc_write(0, address, data);
return;
@ -215,17 +231,39 @@ static void pce_write(UINT32 address, UINT8 data)
return;
case 0x1ff800:
switch( address & 0xf )
{
case 0x07: /* BRAM unlock / CD status */
if ( data & 0x80 )
{
bram_locked = 0;
}
break;
}
bprintf(0,_T("CD write %x:%x\n"), address, data );
// cd system
return;
}
bprintf(0,_T("unknown write %x:%x\n"), address, data );
}
static UINT8 pce_read(UINT32 address)
{
address &= 0x1fffff;
address &= 0x1fffff;
if ((address >= 0x1ee000) && (address <= 0x1ee7ff)) {
// bprintf(0,_T("bram read %x:%x\n"), address,address & 0x7ff );
return PCECDBRAM[address & 0x7ff];
}
switch (address & ~0x3ff)
{
case 0x1fe000:
return vdc_read(0, address);
@ -270,9 +308,16 @@ static UINT8 pce_read(UINT32 address)
return h6280_irq_status_r(address & 0x3ff);
case 0x1ff800:
switch( address & 0xf )
{
case 0x03: /* BRAM lock / CD status */
bram_locked = 1;
break;
}
bprintf(0,_T("CD read %x\n"), address );
return 0; // cd system
}
bprintf(0,_T("Unknown read %x\n"), address );
return 0;
}
@ -344,7 +389,7 @@ static INT32 MemIndex(UINT32 cart_size, INT32 type)
PCEUserRAM = Next; Next += (type == 2) ? 0x008000 : 0x002000; // pce/tg16 0x2000, sgx 0x8000
PCECartRAM = Next; Next += 0x008000; // populous
PCECDBRAM = Next; Next += 0x00800; // Bram thingy
vce_data = (UINT16*)Next; Next += 0x200 * sizeof(UINT16);
vdc_vidram[0] = Next; Next += 0x010000;
@ -470,7 +515,9 @@ static INT32 CommonInit(int type)
interrupt = sgx_interrupt;
system_identify = 0x40;
}
bram_locked = 1;
vce_palette_init(DrvPalette);
c6280_init(3579545, 0);
@ -629,6 +676,7 @@ INT32 PCEScan(INT32 nAction, INT32 *pnMin)
SCAN_VAR(joystick_6b_select[2]);
SCAN_VAR(joystick_6b_select[3]);
SCAN_VAR(joystick_6b_select[4]);
SCAN_VAR(bram_locked);
if (pce_sf2) {
SCAN_VAR(pce_sf2_bank);