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If you want to understand just how weird Apple II graphics were, a great introduction is Stephen Edwards's "Inside the Apple II" video: https://youtu.be/r1VlrJb
by tmoertel 5y ago
If you want to understand just how weird Apple II graphics were, a great introduction is Stephen Edwards's "Inside the Apple II" video: https://youtu.be/r1VlrJboDMw https://youtu.be/r1VlrJboDMw. It's just half an hour long but manages to explain the clever hacks that Woz employed to squeeze video and floppy-disk logic from inexpensive 1970s-era hardware. (It also explains the Apple II's switching power supply, which was novel at the time.)
- pvg 5y agoHeh yeah, I spent a silly amount of time writing my own bitblts for the thing as a kid. I think the //e version of one of the books mentioned in the video (Understanding the Apple ][) is where I first learned of vertical retrace/blank.