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Zorro 2: Created page with "<pre> ********************************************************************** * * * COURS D'ASSEMB..."
2016-12-22T14:57:58Z
<p>Created page with "<pre> ********************************************************************** * * * COURS D'ASSEMB..."</p>
<p><b>New page</b></p><div><pre><br />
**********************************************************************<br />
* *<br />
* COURS D'ASSEMBLEUR 68000 SUR ATARI ST *<br />
* *<br />
* par Le F‚roce Lapin (from 44E) *<br />
* *<br />
* Seconde s‚rie *<br />
* *<br />
* Listing num‚ro 4 *<br />
**********************************************************************<br />
* Automodification de programme<br />
INCLUDE "B:\START.S" routine de d‚marrage<br />
MOVE.L #MESSAGE1,-(SP) on pr‚sente<br />
MOVE.W #9,-(SP) le programme<br />
TRAP #1<br />
ADDQ.L #6,SP<br />
DEBUT MOVE.W #7,-(SP) attend un appui touche<br />
TRAP #1<br />
ADDQ.L #2,SP<br />
CMP.W #" ",D0 espace ?<br />
BEQ FIN oui donc bye bye<br />
MOVE.W #$4E71,VARIANTE place un NOP (par d‚faut)<br />
CMP.W #"A",D0 appui sur 'A'?<br />
BNE ICI non<br />
BSR ROUTINE oui donc sub-routine longue<br />
BRA DEBUT et on recommence<br />
ICI MOVE.W #$4E75,VARIANTE place un RTS … la place<br />
BSR ROUTINE du NOP et va … sub-routine<br />
BRA DEBUT puis recommence<br />
<br />
FIN MOVE.W #0,-(SP)<br />
TRAP #1<br />
*--------------------------------------------*<br />
ROUTINE MOVE.L #MESSAGE2,-(SP)<br />
MOVE.W #9,-(SP)<br />
TRAP #1<br />
ADDQ.L #6,SP<br />
VARIANTE NOP<br />
MOVE.L #MESSAGE3,-(SP)<br />
MOVE.W #9,-(SP)<br />
TRAP #1<br />
ADDQ.L #6,SP<br />
RTS<br />
*--------------------------------------------*<br />
SECTION DATA<br />
MESSAGE1 DC.B 27,"E","A pour un grand message,",13,10<br />
DC.B "espace pour sortir, autre touche",13,10<br />
DC.B "pour un message plus court",13,10,0<br />
EVEN<br />
MESSAGE2 DC.B 13,10,"Voila le petit message...",0<br />
EVEN<br />
MESSAGE3 DC.B "Oups, non, c'est le long!!!",0<br />
EVEN<br />
SECTION BSS<br />
DS.L 100<br />
PILE DS.L 1<br />
END<br />
</pre><br />
Back to [[ASM_Tutorial]]<br />
[[Category: ASSEMBLEUR 68000 sur ATARI ST Part 1 ]]</div>
Zorro 2