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makefile: Allow PORTS with level1/2 mix https://sourceforge.net/p/nitros9/feature-requests/10/
author Tormod Volden <debian.tormod@gmail.com>
date Tue, 19 Apr 2022 18:12:17 +0200
parents 03f26e88b809
children
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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


 section .text

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