RS232 interface with the 6551 UART
Added 2023-03-31 20:21:28 +0000 UTCAs promised in the last video, here's a look at the 6551 UART and how to interface it with the rest of the 6502 computer. This video only covers the hardware aspect. Perhaps I rambled a bit too much, but it was starting to get long and figured it would make sense to break out actually programming the 6551 into another video. As always, any feedback is appreciated before the video goes live.
And of course, thanks again for your continued support of these videos!
Thanks,
-Ben
Comments
Thanks for this Ben! I added a VIA with lots of web help just before your video and kit came out. Boy, your video and kit would have saved some time! I am so happy that others will be adding serial ports to their BE6502's. It really turns the project into a 'real' computer capable of doing fun things and having a real development and debug capability. I can't wait to see what else you have for us in the future! I've got working versions of: Microchess Apple 1 Woz Monitor Eh BASIC with Ben Eater VGA PLOT, CLS, and COLOR commands https://github.com/Fifty1Ford
NormalLuser
2023-04-05 12:36:36 +0000 UTCReferencing David Dawkins comment above - agree. In particular the VIA chip … we know the 6502 is the processor, the ROM is the ROM, and the RAM is memory - but the viewer might not remember what the VIA chip is (or not seen earlier videos).
mossygreen
2023-04-02 02:53:55 +0000 UTCGreat video Ben. Looking forward to see how you handle interrupts as this device will need to be able to alert the cpu when it receives data.
Jim Kelly
2023-04-01 16:14:53 +0000 UTCWhat software do you use for the schematics? Would you consider making the original files (or at least PDFs) available for patrons?
Tyler Arbogast
2023-04-01 15:43:18 +0000 UTCGreat stuff. The only thing I wanted was a very brief reminder of what all the chips were, perhaps with the block architecture. It gets covered bit by bit as we go through, but I couldn't quite remember what everything was upon first visit to the breadboard.
David Dawkins
2023-04-01 10:21:35 +0000 UTCAFAIK, the > "triangle thing" on a pin diagram means edge triggered, not active low. Usually seen on clock inputs.
David
2023-04-01 00:54:29 +0000 UTCWill be hard to transfer from still to working schematics. Was hoping to get from his site but can not find them.
Robert Brown
2023-03-31 22:02:47 +0000 UTC14:48 in the video
Christoffer Eide
2023-03-31 21:34:30 +0000 UTCHave the kits, where is the updated schematics. Thanks.
Robert Brown
2023-03-31 21:16:29 +0000 UTCLooks like fun. Can't wait to get started on this project.
Rob Bruno
2023-03-31 21:13:06 +0000 UTCThe title says "6251", I think it's a typo right?
Olivier HUBER
2023-03-31 21:03:19 +0000 UTC
