While not the subject of the article, his My4TH reminds me:
Back in "the day", there was a replacement ROM for the ZX81/TS1000 that turned it into a FORTH machine. Was a cheap way to learn FORTH when the host machines were deep discounted near the end of their run.
Back in "the day", there was a replacement ROM for the ZX81/TS1000 that turned it into a FORTH machine. Was a cheap way to learn FORTH when the host machines were deep discounted near the end of their run.