diff options
| author | notaz | 2011-01-13 00:41:53 +0200 |
|---|---|---|
| committer | notaz | 2011-01-16 00:03:52 +0200 |
| commit | 7a481d40730f6de27b2daeed523d7162479f8ce5 (patch) | |
| tree | 746d4a84af23c5c9dd3e4bc9c99a9c14dfdeee22 /libpcsxcore | |
| parent | 560e4a12086100ab0cf513171e4160e86a80b604 (diff) | |
| download | pcsx_rearmed-7a481d40730f6de27b2daeed523d7162479f8ce5.tar.gz pcsx_rearmed-7a481d40730f6de27b2daeed523d7162479f8ce5.tar.bz2 pcsx_rearmed-7a481d40730f6de27b2daeed523d7162479f8ce5.zip | |
hack for bios write disable thing
Diffstat (limited to 'libpcsxcore')
| -rw-r--r-- | libpcsxcore/new_dynarec/pcsxmem.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/libpcsxcore/new_dynarec/pcsxmem.c b/libpcsxcore/new_dynarec/pcsxmem.c index a323c18..f5a78ff 100644 --- a/libpcsxcore/new_dynarec/pcsxmem.c +++ b/libpcsxcore/new_dynarec/pcsxmem.c @@ -15,6 +15,8 @@ //#define memprintf printf #define memprintf(...) +static int ram_is_ro; + static void read_mem8() { memprintf("ari64_read_mem8 %08x @%08x %u\n", address, psxRegs.pc, psxRegs.cycle); @@ -89,6 +91,32 @@ void (*writemem[0x10000])(); void (*writememb[0x10000])(); void (*writememh[0x10000])(); +static void write_mem_check_ro32() +{ + if (!ram_is_ro) + *(u32 *)(address | 0x80000000) = word; +} + +static void write_biu() +{ + memprintf("write_biu %08x, %08x @%08x %u\n", address, word, psxRegs.pc, psxRegs.cycle); + + if (address != 0xfffe0130) + return; + + switch (word) { + case 0x800: case 0x804: + ram_is_ro = 1; + break; + case 0: case 0x1e988: + ram_is_ro = 0; + break; + default: + memprintf("write_biu: unexpected val: %08x\n", word); + break; + } +} + /* IO handlers */ static u32 io_read_sio16() { @@ -313,6 +341,10 @@ void new_dyna_pcsx_mem_init(void) writemem[i] = writemem [0x8000|i] = writemem [0xa000|i] = ari_write_ram_mirror32; } + // stupid BIOS RAM check + writemem[0] = write_mem_check_ro32; + ram_is_ro = 0; + // RAM direct for (i = 0x8000; i < 0x8020; i++) { readmemb[i] = ari_read_ram8; @@ -338,7 +370,7 @@ void new_dyna_pcsx_mem_init(void) writememh[0x1f80] = ari_write_io16; writemem[0x1f80] = ari_write_io32; - writemem[0xfffe] = write_mem32; + writemem[0xfffe] = write_biu; #endif // fill IO tables |