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added rom/bus interaction

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This commit is contained in:
Lauchmelder 2021-10-20 23:23:16 +02:00
parent abb9b2e54a
commit 4b22287ad0
4 changed files with 48 additions and 7 deletions
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8
NES Emulator/bus.c
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@ -28,6 +28,8 @@ struct Bus* createBus()
// Create and insert cartridge
bus->cartridge = createCartridge(bus, "roms/nestest.nes");
printf("Reset vector: $%x\n", ((Word)readCartridge(bus->cartridge, 0xFFFD) << 8) | (readCartridge(bus->cartridge, 0xFFFC)));
return bus;
}
@ -40,7 +42,7 @@ void destroyBus(struct Bus* bus)
free(bus);
}
Byte Read(struct Bus* bus, Word addr)
Byte readBus(struct Bus* bus, Word addr)
{
Byte val = 0;
@ -62,9 +64,9 @@ Byte Read(struct Bus* bus, Word addr)
return val;
}
void Write(struct Bus* bus, Word addr, Byte val)
void writeBus(struct Bus* bus, Word addr, Byte val)
{
// Write to the appropriate memory or device
// writeCartridge to the appropriate memory or device
if (addr <= 0x1FFF) // RAM (or one of the mirrored addresses)
{
bus->ram[addr & 0x7FF] = val;