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o add custom chip for mmio

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This commit is contained in:
David Voswinkel
2009-05-17 08:48:44 -07:00
parent c66828729f
commit 1075795ef4
12 changed files with 541 additions and 280 deletions
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13
tools/bsnes/memory/memory.cpp
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@@ -14,12 +14,18 @@ namespace memory {
};
uint8 UnmappedMemory::read(unsigned) { return cpu.regs.mdr; }
void UnmappedMemory::write(unsigned, uint8) {}
void UnmappedMemory::write(unsigned addr, uint8 val) {
printf("UnmappedMemory::write 0x%x 0x%x\n",addr,val);
}
uint8 UnmappedMMIO::mmio_read(unsigned) { return cpu.regs.mdr; }
void UnmappedMMIO::mmio_write(unsigned, uint8) {}
void UnmappedMMIO::mmio_write(unsigned addr, uint8 val) {
printf("UnmappedMemory::write 0x%x 0x%x\n",addr,val);
}
void MMIOAccess::map(unsigned addr, MMIO &access) {
//printf("MMIOAccess::map 0x%x\n",addr);
//MMIO: $[00-3f]:[2000-5fff]
mmio[(addr - 0x2000) & 0x3fff] = &access;
}
@@ -34,7 +40,8 @@ uint8 MMIOAccess::read(unsigned addr) {
}
void MMIOAccess::write(unsigned addr, uint8 data) {
//printf("MMIOAccess::write 0x%x %x\n",addr,data);
printf("MMIOAccess::write 0x%x %x\n",addr,data);
mmio[(addr - 0x2000) & 0x3fff]->mmio_write(addr, data);
}