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EAT2.ASM
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Assembly Source File
|
1993-02-26
|
3KB
|
89 lines
;---------------------------------------------------------------
; EAT2.ASM
; Backhanded advertising program, with procedures
;
; by Jeff Duntemann
; MASM/TASM
; Last update 12/27/89
;---------------------------------------------------------------
;----------------------------|
; BEGIN STACK SEGMENT |
;----------------------------|
MyStack SEGMENT STACK ; STACK word ensures loading of SS by DOS
DB 64 DUP ('STACK!!!') ; This reserves 512 bytes for the stack
MyStack ENDS
;----------------------------|
; END STACK SEGMENT |
;----------------------------|
;----------------------------|
; BEGIN DATA SEGMENT |
;----------------------------|
MyData SEGMENT
Eat1 DB "Eat at Joe's...",'$'
Eat2 DB "...ten million flies can't ALL be wrong!",'$'
CRLF DB 0DH,0AH,'$'
MyData ENDS
;----------------------------|
; END DATA SEGMENT |
;----------------------------|
;----------------------------|
; BEGIN CODE SEGMENT |
;----------------------------|
MyCode SEGMENT
assume CS:MyCode,DS:MyData
Main PROC
Start: ; This is where program execution begins:
mov AX,MyData ; Set up our own data segment address in DS
mov DS,AX ; Can't load segment reg. directly from memory
lea DX,Eat1 ; Load offset of Eat1 string into DX
call Writeln ; and display it
lea DX,Eat2 ; Load offset of Ear2 string into DX
call Writeln ; and display it
mov AH,4CH ; Terminate process DOS service
mov AL,0 ; Pass this value back to ERRORLEVEL
int 21H ; Control returns to DOS
;----------------------------------------|
; PROCEDURE SECTION |
;----------------------------------------|
Write PROC
mov AH,09H ; Select DOS service 9: Print String
int 21H ; Call DOS
ret ; Return to the caller
Write ENDP
Writeln PROC
call Write ; Display the string proper through Write
mov DX,OFFSET CRLF ; Load address of newline string to DS:DX
call Write ; Display the newline string through Write
ret ; Return to the caller
Writeln ENDP
;----------------------------------------|
; END PROCEDURE SECTION |
;----------------------------------------|
Main ENDP
MyCode ENDS
;----------------------------|
; END CODE SEGMENT |
;----------------------------|
END Start ; The procedure named Start becomes the main program