6809 assembly language programming
by Lance A. Leventhal · first published 1981
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…shelves of science fiction, and none of the strange specialist material I buy today When did you start buying? I lived in a small town (roughly 40,000 people) and in 1981 I could buy Lance A. Leventhal's "6809 Assembly Language Programming" on order in less than a week. The 6502 version was in stock. The problem is that chain bookstores emerged right around this point in the local malls (Waldenbooks, for my local area) and killed the…
on “Amazon snubs French free delivery ban with one-cent charge” ↗Wait, what? William Barden's "TRS-80 Color Computer Assembly Language Programming" most certainly did cover the peripherals. Even Lance Leventhal's "6809 Assembly Language Programming" covered the 6820 PIA. The big problem was that Lance Leventhal's book wasn't strictly speaking compatible with the EDTASM assembly language disks and cartridges. That caused a lot of grief for me until…
on “Personal Stories about the TRS-80” ↗…had all but forgotten. The first ever assembly language program I got to run was a bubble sort implementation that sorted the text characters on the screen. I painstakingly typed it in from a book on 6809 assembly language programming. I didn't know what it was going to do, so I was blown away when I saw how it could actually manipulate and sort characters in video memory right before my eyes.
on “Sorting Algorithms Revisualized” ↗