view lib/alib/is_space.a @ 2626:cff23b8fc512

DriveWire routines for Atari SIO
author Boisy Pitre <boisy.pitre@nuance.com>
date Sat, 25 Feb 2012 18:21:54 -0600
parents 7d70b7e1cb21
children aaba193af04f
line wrap: on
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*****************************************

* See if character in "B" is a space ($20)

* NOTE: This module is included for completeness only,
*       it is much more efficient to do an inline test.

* OTHER MODULES NEEDED: none

* ENTRY: B=character to test

* EXIT: CC zero=1 if space, 0 if not


 nam Is Char a Space?
 ttl Assembler Library Module


 psect IS_SPACE,0,0,0,0,0


IS_SPACE:
 cmpb #$20
 rts

 endsect