用于在8085微处理器中从键盘输入2个数字的程序

我们使用键盘上的两个2位十六进制数字编写了一个8085汇编语言程序，该程序有两个输入，然后在地址字段中相加并输出结果。

FILE NAME ADD2NUM.ASM

ORG C000H

CURAD: EQU FFF7H

UPDAD: EQU 06BCH

CLEAR: EQU 044AH

GTHEX: EQU 052FH

MVI A, 0EH

SIM

EI ; Unmask RST5.5 and enable interrupts

MVI B, 01

CALL GTHEX ; Input a 2 digit number and display in data field

MOV A, E

STA C100H ; Store the 2-digit hex number in C100H

MVI B, 01

CALL GTHEX ; Input a 2 digit number and display in data field

LDA C100H

ADD E

STA CURAD ; Add the two numbers and store in CURAD

JNC SKIP

MVI A, 01

STA CURAD+1 ; If Carry =1, store 1 in CURAD+1

SKIP: CALL CLEAR ; Blank the entire display

CALL UPDAD ; Display sum in address field.

HLT