已知256≤显示数<10000,存在R7、R6中,试将其转换为4位共阳顺序小数点暗字段码,存在以33H(高位)~30H的内RAM中。
STACK SEGMENT STACK
DW 32DUP()
STACK ENDS
DATA SEGMENT
BUF DB 50()
DATA ENDS
CODE SEGMENT
START PROC FAR
ASSUME CS:CODE,DS:DATA,SS:STACK
MOV AX,DATA
MOV DS,AX
LEA SI,BUF
(1)
CON:
INT 21H
MOV [SI],AL
INC SI
(2)
JNE CON
MOV AX,4C00H
INT 21H
START ENDP
CODE ENDS
END START
STACK SEGMENT STACK
DW 32 DUP()
STACK ENDS
DATA SEGMENT
BUF DB 50()
DATA ENDS
CODE SEGMENT
START PROC FAR
ASSUME CS: CODE, DS: DATA, SS: STACK
MOV AX, DATA
MOV DS, AX
LEA SI, BUF
[1]
CON:
INT 2IH
MOV [SI],AL
INC SI
[2]
JNE CON
MOV AX, 4COOH
INT 2IH
START ENDP
CODE ENDS
END START