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loading msgs, bugfixes

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@69 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-16 20:59:11 +00:00
parent 7336a99a49
commit 66fdc0f0d5
13 changed files with 93 additions and 49 deletions
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23
Pico/cd/Memory.c
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@ -27,6 +27,7 @@ typedef unsigned int u32;
//#define __debug_io
//#define __debug_io2
//#define rdprintf dprintf
#define rdprintf(...)
//#define wrdprintf dprintf
@ -106,18 +107,30 @@ static void m68k_reg_write8(u32 a, u32 d)
case 2:
Pico_mcd->s68k_regs[2] = d; // really use s68k side register
return;
case 3:
case 3: {
u32 dold = Pico_mcd->s68k_regs[3]&0x1f;
dprintf("m68k_regs w3: %02x @%06x", (u8)d, SekPc);
d &= 0xc2;
if ((Pico_mcd->s68k_regs[3]>>6) != ((d>>6)&3))
if ((dold>>6) != ((d>>6)&3))
dprintf("m68k: prg bank: %i -> %i", (Pico_mcd->s68k_regs[a]>>6), ((d>>6)&3));
//if ((Pico_mcd->s68k_regs[3]&4) != (d&4)) dprintf("m68k: ram mode %i mbit", (d&4) ? 1 : 2);
//if ((Pico_mcd->s68k_regs[3]&2) != (d&2)) dprintf("m68k: %s", (d&4) ? ((d&2) ? "word swap req" : "noop?") :
// ((d&2) ? "word ram to s68k" : "word ram to m68k"));
d |= Pico_mcd->s68k_regs[3]&0x1d;
if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode
Pico_mcd->s68k_regs[3] = d; // really use s68k side register
if (dold & 4) {
d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing
} else {
//dold &= ~2; // ??
if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode
}
Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register
/*
d |= Pico_mcd->s68k_regs[3]&0x1d;
if (!(d & 4) && (d & 2)) d &= ~1; // return word RAM to s68k in 2M mode
Pico_mcd->s68k_regs[3] = d; // really use s68k side register
*/
return;
}
case 6:
Pico_mcd->bios[0x72 + 1] = d; // simple hint vector changer
return;