ZX Spectrum+ Resurrection

[Nick]

Oh, those dreaded ZTX500 series e-line transistors. Always went phuff at the drop of a hat.

One little trick with Speccys, to check the memory, enter the following command.

PRINT PEEK 23732+PEEK 23733*256

A 48k machine would reply with 65535, a 16k machine with 32767. From there, with a bit of extra peeking it was possible to identify which memory chip needed changing.

I have quite a lot of RAM chips for these - all kept nicely in conductive foam... SOld a lot on eBay last year, but still some left...

Nice to see another one resurrected. Got a Sinclair Scientific RPN calculator on my "Shelf of Shame"...