Method writeControl

nes/mapper1.go:121–137

Control (internal, $8000-$9FFF)

(value byte)

// Control (internal, $8000-$9FFF)
func (m *Mapper1) writeControl(value byte) {
	m.control = value
	m.chrMode = (value >> 4) & 1
	m.prgMode = (value >> 2) & 3
	mirror := value & 3
	switch mirror {
	case 0:
		m.Cartridge.Mirror = MirrorSingle0
	case 1:
		m.Cartridge.Mirror = MirrorSingle1
	case 2:
		m.Cartridge.Mirror = MirrorVertical
	case 3:
		m.Cartridge.Mirror = MirrorHorizontal
	}
	m.updateOffsets()
}

// CHR bank 0 (internal, $A000-$BFFF)
func (m *Mapper1) writeCHRBank0(value byte) {