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Ben Eater's fantastic video series on building a breadboard 6502 based computer and an 8-bit breadboard computer from scratch might be appreciated in this threa

Ben Eater's fantastic video series on building a breadboard 6502 based computer and an 8-bit breadboard computer from scratch might be appreciated in this thread. 6502 playlist: https://www.youtube.com/watch?v=LnzuMJLZRdU&list=PLowKtXNTBypFbtuVMUVXNR0z1mu7dp7eH https://www.youtube.com/watch?v=LnzuMJLZRdU&list=PLowKtXNTBy... 8-bit build playlist: https://www.youtube.com/watch?v=HyznrdDSSGM&list=PLowKtXNTBypGqImE405J2565dvjafglHU https://www.youtube.com/watch?v=HyznrdDSSGM&list=PLowKtXNTBy... He also sells kits if one is interested in playing along.

AceJohnny2 4y ago
Highly recommend Ben Eater's video, which in this embedded developer's eyes has been the clearest, best explanation of the fundamentals of a CPU as I've ever seen.
snvzz 4y ago
Similarly, I have come to appreciate rehsd's[0] efforts in building a 80286 computer. 0. https://www.youtube.com/@rehsd/videos https://www.youtube.com/@rehsd/videos
- rep_lodsb 4y ago
  Wow, that series looks fascinating! Only watched the first video yet, after initializing itself the CPU actually runs this code (because D8-D15 is wired to zero): addr opcode FFFFF0 90 NOP FFFFF1 00 90 00 90 ADD [BX+SI+9000],DL FFFFF5 00 90 00 90 ADD [BX+SI+9000],DL FFFFF9 00 90 00 90 ADD [BX+SI+9000],DL FFFFFD 00 90 00 -- !! general protection fault You can see it read and write the same address three times, then fetch the interrupt 0Dh vector and push flags+CS+IP to the stack :)