pep/9

pep9课下作业

源代码

Set sum=0
Input num1
Read num1
Set sum to sum+num1
Input num2
Read num2
Set sum to sum + num2
Input num3
Read num3
Set sum to sum + num3
Print sum

用PEP/9 机器指令实现（1）中的算法

用汇编语言实现（1）中的算法

BR main
sum:.WORD 0x0000
num1:.BLOCK 2
num2:.BLOCK 3
num3:.BLOCK 4
main:LDWA sum,d
DECI num1,d
ADDA num1,d
DECI num2,d
ADDA num2,d
DECI num3,d
ADDA num3,d
STWA sum,d
DECO sum,d
STOP
.END