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32x, improve cartridge mapping, BIOS replication

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This commit is contained in:
kub 2021-11-28 22:02:11 +01:00
parent 44e4bf2b0f
commit 439cf7f850
2 changed files with 10 additions and 9 deletions
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12
pico/32x/32x.c
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@ -145,13 +145,13 @@ void p32x_reset_sh2s(void)
idl_src = CPU_BE2(*(u32 *)(Pico.rom + 0x3d4)) & ~0xf0000000;
idl_dst = CPU_BE2(*(u32 *)(Pico.rom + 0x3d8)) & ~0xf0000000;
idl_size= CPU_BE2(*(u32 *)(Pico.rom + 0x3dc));
if (idl_size > Pico.romsize || idl_src + idl_size > Pico.romsize ||
idl_size > 0x40000 || idl_dst + idl_size > 0x40000 || (idl_src & 3) || (idl_dst & 3)) {
elprintf(EL_STATUS|EL_ANOMALY, "32x: invalid initial data ptrs: %06x -> %06x, %06x",
idl_src, idl_dst, idl_size);
// copy in guest memory space
idl_src += 0x2000000;
idl_dst += 0x6000000;
while (idl_size >= 4) {
p32x_sh2_write32(idl_dst, p32x_sh2_read32(idl_src, &msh2), &msh2);
idl_src += 4, idl_dst += 4, idl_size -= 4;
}
else
memcpy(Pico32xMem->sdram + idl_dst, Pico.rom + idl_src, idl_size);
// VBR
vbr = CPU_BE2(*(u32 *)(Pico.rom + 0x3e8));