控制器操作

ISZ X
t1: MAR <- (IRaddress)
t2: MBR <- (memory)
t3: MBR <- (MBR) +1
t4: memory <- (MBR)
if (MBR) == 0 then PC <- (PC) + 1

BSA X
t1: MAR <- (IRaddress)
MBR <- (PC)
t2: PC <- (IRaddress)
memory <- (MBR)
t3: PC <- (PC) + 1