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32x: skip unnecessary bios work in cd mode

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This commit is contained in:
notaz 2017-08-19 00:38:03 +03:00
parent 6a5b1b362e
commit 61c4e5117a
1 changed files with 23 additions and 20 deletions
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43
pico/32x/32x.c
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@ -134,28 +134,31 @@ void p32x_reset_sh2s(void)
// if we don't have BIOS set, perform it's work here.
// MSH2
if (p32x_bios_m == NULL) {
unsigned int idl_src, idl_dst, idl_size; // initial data load
unsigned int vbr;
// initial data
idl_src = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d4)) & ~0xf0000000;
idl_dst = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d8)) & ~0xf0000000;
idl_size= HWSWAP(*(unsigned int *)(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);
}
else
memcpy(Pico32xMem->sdram + idl_dst, Pico.rom + idl_src, idl_size);
// GBR/VBR
vbr = HWSWAP(*(unsigned int *)(Pico.rom + 0x3e8));
sh2_set_gbr(0, 0x20004000);
sh2_set_vbr(0, vbr);
// checksum and M_OK
Pico32x.regs[0x28 / 2] = *(unsigned short *)(Pico.rom + 0x18e);
if (!(PicoAHW & PAHW_MCD)) {
unsigned int idl_src, idl_dst, idl_size; // initial data load
unsigned int vbr;
// initial data
idl_src = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d4)) & ~0xf0000000;
idl_dst = HWSWAP(*(unsigned int *)(Pico.rom + 0x3d8)) & ~0xf0000000;
idl_size= HWSWAP(*(unsigned int *)(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);
}
else
memcpy(Pico32xMem->sdram + idl_dst, Pico.rom + idl_src, idl_size);
// VBR
vbr = HWSWAP(*(unsigned int *)(Pico.rom + 0x3e8));
sh2_set_vbr(0, vbr);
// checksum and M_OK
Pico32x.regs[0x28 / 2] = *(unsigned short *)(Pico.rom + 0x18e);
}
// program will set M_OK
}