On: I made Ben Eater's 8-bit breadboard computer Emula...

[dangrie158]

Nice, I built a version in python with curses visualization of all states. It emulates all chips ob the hardware level (chips.py) and does not need any dependencies except py3.7: https://github.com/dangrie158/SAP-1/tree/master/Emulator

[scaramanga → dangrie158]

Cool!

I didn't go as far as implementing the CPU, but watching his vids inspired me to write a circuit emulator, also in python:

https://github.com/giannitedesco/primula

I used it to emulate all the various flip flops, but I was thinking of building a computer in it.

[lodovic → dangrie158]

That looks really nice, how is the speed? I did the same in C#, and implemented it up to bus and transistor level. I could execute a Fibionacci program in asm but it was horribly slow (less than 1M instructions/sec)

[sokoloff → lodovic]

Worth noting that the Apple ][ and C64 had a 1.023MHz clock rate with a minimum of 2 cycles per instruction, so your “horribly slow” system might be about real-time for the era.

(Atari 800 had a 1.77 or 1.79MHz clock, but wasn’t regarded as wildly different.)

[klelatti → dangrie158]

Thanks. This looks like an amazing (teaching / exploratory) resource.

Just one question - couldn't immediately see a license file?