PEP9

利用循环语句

counter 是计数器 需要在后面输入个3才是3个数字之和

Set sum to 0

Set counter to 0

Set limit to number of values to sum

While(counter<limit)

Read num

Set sum to sum+num

Set counter to counter+1

Write sum

BR main

sum: .WORD 0x0000

counter: .WORD 0x0000

num: .BLOCK 2

limit: .BLOCK 2

main: DECI limit,d

loop: DECI num,d

LDWA sum,d

ADDA num,d

STWA sum,d

LDWA counter,d

ADDA 1,i

STWA counter,d

CPWA limit,d

BREQ finish

BR loop;

finish: DECO sum,d

STOP

.END