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Amiga MA Magazine 1997 #3
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amigamamagazinepolishissue03-1
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polski_aminet
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michal_letowski
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debuglib
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src
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kgetchar.a
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1996-05-11
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; kgetchar.a - KGetChar implementation using ROM routines
; $VER: kgetchar.a 37.1 (10.5.96)
; Copyright © 1996 Michael Letowski
;
; 37.1 (10.5.96) - initial version
include "exec/funcdef.i"
include "exec/exec_lib.i"
xdef _KGetChar
xdef @KGetChar
; Some aliases
xdef _kgetc
xdef @kgetc
xdef KGetChar
section text,code
******* debug.lib/KGetChar **************************************************
*
* NAME
* KGetChar -- get a character from the debugging console. (V37)
*
* SYNOPSIS
* char = KGetChar()
* D0
*
* LONG KGetChar(VOID);
*
* FUNCTION
* Busy waits until a character arrives from the debugging console
* (defaults to the serial port at 9600 baud).
*
* RESULT
* char - a character that arrived from console.
*
* NOTES
* @KGetChar, @kgetc and KGetChar are identical assembly interfaces.
* _KGetChar, _kgetc are the C interfaces.
*
*****************************************************************************
*
* _KGetChar(void)
* @KGetChar(void)
*
_KGetChar:
_kgetc:
@KGetChar:
@kgetc:
KGetChar:
move.l a6,-(sp) ; Save a6
move.l (4).w,a6 ; Load a6 with SysBase
Loop:
jsr _LVORawMayGetChar(a6) ; Try to get char
tst.l d0 ; Got it?
bmi.b Loop ; No - loop
move.l (sp)+,a6 ; Restore a6
rts ; Return d0
end