Captain Cozmos Posted December 18, 2022 Share Posted December 18, 2022 (edited) I think I already listed my resume somewhere around here but a brief mention: I took a Z80 advanced class while I was in Junior High, 1980. A couple years Later CP/M 2.2 was what we did the in depth study in operating system design. So I was applying the same principles that I learned but the reality is I had it Bass Ackwards.... Instead of loading everything at $0000 or $0100. What I should have been doing is maintaining EOS, The Stack and my DOS above $8000 and using the lower bank as all the memory I need. I can switch in as many 32k banks I have starting at $0000 all day. So, I will start off with OUT(7F), 2 which is Expansion Ram $0000-$7FFF/Normal Ram $8000-$FFFF Too easy. Edited December 18, 2022 by Captain Cozmos 1 Quote Link to comment Share on other sites More sharing options...
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