Sharp MZ-80K museum-quality restoration, PART 8

Part 8 of my museum-quality (hopefully!) restoration of a Sharp MZ-80K home computer from Japan, 1978. In this part I test all DRAM chips, replace the defective ones, and then proceed to reassemble the machine in its minimal configuration and perform the very first integration tests. It was a very satisfying episode to make, and hopefully as satisfying to watch!

ERRATA: At 4:40 I say that the video memory is 4KB. That is incorrect; there is only 1KB of video memory (SRAM). The 36KB configuration is purely for DRAM, and is explained here: https://www.sharpmz.no/articles/the-mz-series/mz-80/mz-80-knowhow/mz-80k-hints-and-tips/ (see section "Fitting extra memory to your MZ-80K").

PART 7: https://youtu.be/5lPlBWovykE
PART 9: https://youtu.be/oeLxC1aGN0M

For more information, go to:
https://www.thebyteattic.com

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