debugging .asm file
When I want to debug my .asm file how do I do it line by line? Do I have to go into debug mode and enter the lines each one at a time? If that is the only way then how do I enter the labels in the code that I want to jump to at the debug prompt. When I enter labels it gives an error. for instance
Code:
; TESTQUAD.ASM: TEST MY PROGRAM
;
.MODEL SMALL
.DATA
X1 DB 4 ;TEST CASE FOR VALUE 4
Y1 DW 10 ; Y SHOULD BE 10
PASS DB 'Procedure passes.',0DH,0AH,'$'
FAIL DB 'Procedure fails.',0DH,0AH,'$'
.CODE
.STARTUP
MOV AL,X1 ;LOAD MY FIRST VALUE
CALL QUAD ;COMPUTE RESULTS
CMP AX,Y1 ;LOOK FOR MATCH
JNZ BAD
LEA DX,PASS ;SETUP POINTER
JMP SEND ;OUTPUT MESSAGE
BAD: LEA DX,FAIL ;SETUP POINTER TO FAIL MESSAGE
SEND: MOV AH,9 ;DISPLAY STRING FUNCTION
INT 21H ;DOS CALL
.EXIT
QUAD PROC NEAR
MOV BL,AL ;save a copy of input value
MOV CX,10 ;setting up 10x
MUL CX ;compute 10X
MOV AL,32 ; placing 50 dec into AL
SUB AX,CX ; perform y=50-10x
RET
QUAD ENDP
END
if I enter SEND: it will give an error and I am still trying to get this to work. |
