fjmilens3

3 ms·

1.
by fjmilens3 2y ago
> It shouldn't be too hard to replace the "custom" keyboard with a ps2 keyboard and do the ps2 driver on the propeller You might be surprised at the knock-on effects of that. You're not going to be able to drop in the
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by fjmilens3 2y ago
> I also wonder why use NTSC for outputting video. VGA is easy enough to bitbang and pretty ubiquitous. HDMI is probably more available at this point, but has unfriendly licensing issues. DisplayPort seems better in all aspects, but it’s
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by fjmilens3 2y ago
The Cody Computer doesn't use a PS/2 keyboard, it's actually using the 65C22 VIA and a CD4051 to scan the keyboard matrix. This is mentioned in the book and in the schematic up on Github, but for a quick version, it's co
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by fjmilens3 2y ago
He's the dog in the book. :-)
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by fjmilens3 2y ago
I would actually go so far as to say the Propeller is a good bridge into general electronics, certainly anything digital. It comes up in the context of video generation, but it can do so much more than that because of the multicore design;
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by fjmilens3 2y ago
Thank you. :-)
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by fjmilens3 2y ago
That's true. From a technical standpoint a closer example would be Jac Goudsmit's Propeddle project, or its predecessor, the Propeller-6502 hybrid made by Dennis Ferron. There's actually a long tradition of using the Propelle
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by fjmilens3 2y ago
My guess after building it would be that it would come in around $100 to $150 depending on what you have around for 3D printing and so on. Unfortunately, I recall there being a bit of a jump in component prices circa 2020 that really hasn&#
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by fjmilens3 2y ago
I'm the person behind the project (and I have a funny feeling I used your 8x8 text driver back when I was trying to learn how the Propeller worked). Anyway, there were actually a few reasons behind the 160x200 video mode: One was simpl