LISTING2.TXT
******************************************************************
* *
* ASSEMBLER COURSE 68000 ON ATARI ST *
* *
* by The Ferocious Rabbit (from 44E) *
* *
* Second series *
* *
* Listing number 2 *
* *
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INCLUDE "D:\START.S"
MOVE.L #MESSAGE,-(SP) introductory message
MOVE.W #9,-(SP)
TRAP #1
ADDQ.L #6,SP
TOUCHE MOVE.W #7,-(SP) waiting for a key press
TRAP #1
ADDQ.L #2,SP
SWAP D0 to get the scan code
CMP.W #1,D0 escape?
BEQ END yes so bye bye
CMP.W #$3B,D0 compared to F1
BCS TOUCHE below so not valid
CMP.W #$44,D0 compared to F10
BHI TOUCHE above so not valid
* The key is valid
ADD.W #6,D0 to get ASCII of A,B,C...
MOVE.W D0,-(SP) display
MOVE.W #2,-(SP)
TRAP #1
ADDQ.L #4,SP
BRA TOUCHE and we start over
END CLR.W -(SP)
TRAP #1
*--------------------------------------------------*
SECTION DATA
MESSAGE DC.B 27,"E","PRESS A FUNCTION KEY",13,10
DC.B "ESCAPE TO EXIT",13,10,0
SECTION BSS
DS.L 256
STACK DS.L 1
END
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