编写的伪代码算法:

将输入的三个值求和

input num1

input num2

input num3

set sum to num1+num2+num3

write sum

输出结果

用pep9机器指令实现:

12 00 0B 00 00 00 00 00 00 00 00 C1 00 03 31 00

05 61 00 05 31 00 07 61 00 07 31 00 09 61 00 09

E1 00 03 39 00 03 00 zz

Pep9 课下作业 20211314_机器指令

用pep9汇编语言实现:

BR main

sum:.WORD 0x0000

num1:.BLOCK 2

num2:.BLOCK 2

num3:.BLOCK 2

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

Pep9 课下作业 20211314_汇编语言_02