diff options
Diffstat (limited to 'nes/bus.go')
| -rw-r--r-- | nes/bus.go | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/nes/bus.go b/nes/bus.go new file mode 100644 index 0000000..480d178 --- /dev/null +++ b/nes/bus.go @@ -0,0 +1,21 @@ +package nes + +func (n *Console) Read(addr uint16) uint8 { + switch { + case addr < 0x2000: + return n.RAM[addr&0x7FF] + case addr >= 0x4020: + return n.Cart.Mapper.CPURead(addr) + default: + return 0 + } +} + +func (n *Console) Write(addr uint16, v uint8) { + switch { + case addr < 0x2000: + n.RAM[addr&0x7FF] = v + case addr >= 0x4020: + n.Cart.Mapper.CPUWrite(addr, v) + } +}
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