RaySollium99/picodrive
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1.30 release

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@78 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-25 00:08:03 +00:00
parent 7a1f6e45c9
commit 89fa852dce
8 changed files with 63 additions and 16 deletions
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12
Pico/cd/Memory.c
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@ -34,7 +34,6 @@ typedef unsigned int u32;
// -----------------------------------------------------------------
// poller detection
#define USE_POLL_DETECT
#define POLL_LIMIT 16
#define POLL_CYCLES 124
// int m68k_poll_addr, m68k_poll_cnt;
@ -53,7 +52,7 @@ static u32 m68k_reg_read16(u32 a)
goto end;
case 2:
d = (Pico_mcd->s68k_regs[a]<<8) | (Pico_mcd->s68k_regs[a+1]&0xc7);
dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPcS68k);
dprintf("m68k_regs r3: %02x @%06x", (u8)d, SekPc);
goto end;
case 4:
d = Pico_mcd->s68k_regs[4]<<8;
@ -129,7 +128,14 @@ void m68k_reg_write8(u32 a, u32 d)
d ^= 2; // writing 0 to DMNA actually sets it, 1 does nothing
} else {
//dold &= ~2; // ??
#if 1
if ((d & 2) && !(dold & 2)) {
Pico_mcd->m.state_flags |= 2; // we must delay setting DMNA bit (needed for Silpheed)
d &= ~2;
}
#else
if (d & 2) dold &= ~1; // return word RAM to s68k in 2M mode
#endif
}
Pico_mcd->s68k_regs[3] = d | dold; // really use s68k side register
#ifdef USE_POLL_DETECT
@ -273,7 +279,7 @@ void s68k_reg_write8(u32 a, u32 d)
return; // only m68k can change WP
case 3: {
int dold = Pico_mcd->s68k_regs[3];
dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPc);
dprintf("s68k_regs w3: %02x @%06x", (u8)d, SekPcS68k);
d &= 0x1d;
d |= dold&0xc2;
if (d&4) {