Assembler Macro Libraries 11

One of the facilities that the use of macros offers is the creation of libraries, which are groups of macros which can be included in a program from a different file.

The creation of these libraries is very simple, we only have to write a file with all the macros which will be needed and save it as a text file.

To call these macros it is only necessary to use the following instruction Include NameOfTheFile, on the part of our program where we would normally write the macros, this is, at the beginning of our program, before the declaration of the memory model.

The macros file was saved with the name of MACROS.TXT, the instruction Include would be used the following way:

;Beginning of the program
Include MACROS.TXT
.MODEL SMALL
.DATA
;The data goes here
.CODE
Beginning:
;The code of the program is inserted here
.STACK
;The stack is defined
End beginning
;Our program ends


More debug program examples

In this section we provide you several assembler programs to run in the debug program. You can execute each assembler program using the "t" (trace) command, to see what each instruction does.

First example

-a0100
297D:0100 MOV AX,0006 ; Puts value 0006 at register AX
297D:0103 MOV BX,0004 ;Puts value 0004 at register BX
297D:0106 ADD AX,BX ;Adds BX to AX contents
297D:0108 INT 20 ;Causes end of the Program

The only thing that this program does is to save two values in two registers and add the value of one to the other.