RC6502-Apple-1-Replica
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tebl
An expandable SBC-version of the Apple 1 computer, easy to get started with and lot of cool stuff that can be added to it!
In the readme file for https://github.com/tebl/RC6502-Apple-1-Replica/tree/master/RC6502%20Apple%201%20SBC You link the 8 KB binary file to https://github.com/tebl/RC6502-Apple-1-Replica/tree/master/RC6502%20ROM/firmware which no longer exists. I think its now under: https://github.com/tebl/RC6502-Apple-1-Replica/tree/master/software/firmware Link for PIA Communicator is...
The BOM on the readme you have listed for the RC6502 Apple 1 SBC is missing the LM555 timer. U6 LM555
Couldn't the Nano provide the 1-MHz CPU clock (running as a background task on the Nano)? Example code snippet; ``` /*************************************************************************** * output 1-MHz clock on OC2A (D11/PB3) for RC6502...
The 6502 has a φ2out pin (39) to allow access to the system clock when the internal oscillator is used. This doesn't seem necessary if an external oscillator is used...
This isn't really an issue, but I thought it may be of interest to people who follow this project. Previously I made a minesweeper clone in 6502 assembly for the...
Seeing as I may have broken my old PIA chip by turning my machine on while it was resting on a metal surface (see #23), I would like to make...
First of all, I'm not sure if this is an issue, or some problem of my build. Nonetheless, I hope someone can help me out (and in the process, maybe...
Pin D6 (9) of the Arduino Nano is reported to be connected to the CLOCK (which would be interesting, for those that don't have an available crystal, or to do...
I have built the RC6502 SBC Rev D plugged into the backplane. So far the arduino terminal coms works but no backslash. I was wondering what the RAM_EN and ROM_EN...
In [PDF schematic for the Debug board](https://github.com/tebl/RC6502-Apple-1-Replica/blob/master/RC6502%20Debug/export/RC6502%20Debug.pdf), the `SYNC` signal has a directional indication that it's an ouput from the clock input of the 74LS74 to the bus, but in...