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Brian's entire ZX81 reproduction project is wonderful: https://chaos.social/@swetland/tagged/zx81 https://chaos.social/@swetland/tagged/zx81

• swetland 3y ago
  I've had a lot of fun with this project, but want to be clear that the actual "replicate the ZX81 using discrete 74xx logic (like the ZX80) instead of the ULA chip" PCB design is the work of Mahjongg2 who has shared their work here: https://github.com/mahjongg2/ZX81plus38 https://github.com/mahjongg2/ZX81plus38 https://forums.raspberrypi.com/viewtopic.php?t=254492 https://forums.raspberrypi.com/viewtopic.php?t=254492 https://revspace.nl/ZX81plus38_simple_to_build_ZX-81_clone https://revspace.nl/ZX81plus38_simple_to_build_ZX-81_clone