Path: utzoo!utgpu!watmath!clyde!att!osu-cis!killer!mjbtn!raider!dana.holt
From: dana.holt@raider.MFEE.TN.US
Newsgroups: comp.sys.amiga
Subject: ST PROGRAMMING
Message-ID: <36@raider.MFEE.TN.US>
Date: 25 Nov 88 12:51:00 GMT
References: <3009@sugar.uu.net>
Sender: bbs@raider.MFEE.TN.US
Organization: RaiderNet Public Access (#2), Murfreesboro, TN
Lines: 49


        This reply is directed toward the cooment you made about the Atari ST 
inability to survive a ^C in any of the built-in input functions. Well, this 
message is to set that straight. I do assembly,Pascal,and 'C' on an ST and 
there are built-in functions (in the OS) to allow for input which will ignore 
the ^C keys. If you are stupid enough to write a trap handler to fix the ^C 
problem I feel sorry for you. I can write a piece of assembler off the top of 
my head to do that:
 
        
        m 


start:
        move.w  #$ff,-(sp)      ; Function value to test keyboard
        move.w  #6,-(sp)        ; function number
        trap    #1              ; call GEMDOS
        addq.l  #4,sp           ; correct stack
        tst.w   d0              ; char arrived?
        beq     start           ; not yet
        cmp.b   #3,d0           ; is it a ^C
        beq     END             ; if so then end if not go on
        move    d0,-(sp)        character for putput on the stack
        move    #6,-(sp)        ; function
        trap    #1              ; call GEMDOS
        addq.l  #4,sp
        bra     start           ; get new char
end:
        clr.w   -(sp)           ; clear stack
        trap    #1              ; call GEMDOS $00 (TERM) to exit
(end assembly)
 
        That is off the top of my head. I magine what you could do with some 
time and planning. That was using GEMDOS function $06 which is not the best but
it is the first that comes to mind as I do not have a list at this time..
 
               |||
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              //|\\
            ---------
            % ATARI %
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          Dana Holt
        Rt.5 Box 119
       M'boro, Tn 37130
VOICE: 615-896-5668
DATA : 615-896-6254
                       ' Amiga? What the hell is an Amiga? '
                                - ME