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View Code? Open in Web Editor NEWA recreation of the MOS KIM-1 microcomputer, the start of the Commodore-line of computers. Complete with hex keypad, six digit displays and a lot of 8-bit fun!
License: Other
A recreation of the MOS KIM-1 microcomputer, the start of the Commodore-line of computers. Complete with hex keypad, six digit displays and a lot of 8-bit fun!
License: Other
The value of C10 is not in the BOM for the UI. It is shown as 500nf on the schematic rev c but is difficult/ expensive to source. What alternatives are there?
First of all, great project, I'm having lots of fun with it.
Second, I'm struggling a bit with regards to saving to tape. I think something needs to be done to massage the signal coming out of PB7. The output of that signal, (according to my oscilloscope) seems to have a HIGH of 5v no problem, but the LOW only goes halfway to GND, and thus will not trigger the NAND gate.
Can you confirm if this issue is due to my RIOT, or perhaps something needs to be done to attenuate the signal?
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