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From: mmphosis <mmphosis@macgui.com>
Newsgroups: comp.sys.apple2.programmer
Subject: Re: Using ProDOS DOSCMD
Date: Sat, 21 May 2016 01:06:25 -0000 (UTC)
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I am not familiar with DOSCMD, but this is what I would do...



JSR save80toCA ; at the beginning of your program

; ... your code that disturbs 80 to CA

JSR swap80toCA ; before calling DOSCMD

; call DOSCMD

JSR swap80toCA ; after calling DOSCMD

; ... more of your code that uses 80 to CA

JSR swap80toCA ; might want to do this again before quitting your code.



I did something similar to this in "Apple-1 for Apple II" to save and
restore critical pages of memory that I clobber with my code.