This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
The assembly language interface to the mouse firmware is documented in the reference material that was supplied with the IIe AppleMouse card, the IIc Technical Reference Manual, and the IIgs Firmware Reference Manual. For a 'how to' discussion, see FAQs Resource file R034MOUSEPRG.TXT. By: David Empson Related FAQs Resource: R034MOUSEPRG.TXT (Text file)
 
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