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Added ClrScrn and CapsLock functionality for Atari VTIO
author Boisy Pitre <boisy.pitre@nuance.com>
date Mon, 10 Dec 2012 16:27:38 -0600
parents 7d70b7e1cb21
children aaba193af04f
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**********************************

* String Length: find length of sign-bit terminated string.
*          note: sign-bit set byte IS included in count.

* OTHER MODULES NEEDED: none


* ENTRY: X=start of string


* EXIT: D=length
*       all other regs (except cc) preserved


 nam Find sign-bit term. String Length
 ttl Assembler Library Module


 psect STRHLEN,0,0,0,0,0

STRHLEN:
 pshs x
 clra it'll be at least one byte long
 clrb

loop
 addd #1 bump count
 tst ,x+ end?
 bpl loop

 puls x,pc

 endsect