Method dec

nes/cpu.go:671–675

DEC - Decrement Memory

(info *stepInfo)

// DEC - Decrement Memory
func (cpu *CPU) dec(info *stepInfo) {
	value := cpu.Read(info.address) - 1
	cpu.Write(info.address, value)
	cpu.setZN(value)
}

// DEX - Decrement X Register
func (cpu *CPU) dex(info *stepInfo) {