ZX Spectrum build, No ULA.

In this short series, I'm going to build a ZX spectrum using an EPROM instead of a ULA. In this video, much of the build is done and some bring-up. I'm planning to do a PAL version as well. Part 1: This video Part 2: Part 3: Part 4: Part 5: 16K ZX81 vs 16K ZX Spectrum VGA from an EPROM. Apple 2 wire-by-wire