Approaches to projects (was: KM11 maintenance module

When I read that, my immediate thought was 'Skywave' :-). I believe they also did versions for other UK home micros (the idea of a BBC version is floating around my brain). You mean this Forth doesn't include the C@ and C? words? It's seriously broken if it doesn't! The former is the equivalent of Peek -- it's Character Fetch. It takes an address from the top of the parameter stack and replaces it with the 8 bit contents of that address. The latter is best explained by its definition : C? C@ . ; In other words (sic) it takes an address from the top of stack and prints the 8 bit contents of the location using the current number base. I suspect, therefore you do have a way of reading out that EPROM, although unless you've got a serial interface on your ZX81, it's not going to be a lot of use. -tony