diff menu.s68 @ 1215:cf69a179aeaf

Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
author Michael Pavone <pavone@retrodev.com>
date Wed, 01 Feb 2017 21:19:35 -0800
parents 8715174e9366
children 34798ad9c570
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