Sinclair ZX80 / ZX81 / Z88 Forums

OK so after burning a new rom and swapping the PIC chip out with the one from my ZX80 ZXPand I have identified the PIC chip as faulty.

Can this just be replaced or does it need to be programmed first?

Thanks

Well thanks to a faulty monitor my ZXPand+AY has bitten the dust after it put 96vac down the audio lead. Looks like the PIC, Gals and ROM at least are dead and possibly the AY chip. So basically every chip on it. I gather these are no longer available? (I have no way of programming a GAL chip or the...

Thanks Mark

Found them

https://www.ebay.co.uk/itm/ACORN-BBC-MA ... SwmQxfaP3Y

Hi

Anyone know of a replacement for the key switches in the Memopak keyboard?
Thanks

Could it be Sea Mines?

http://zxspectrum.hal.varese.it/zx81.htm

I also think you need to enter the following before loading

Poke16389,103
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It was also a type in Your Computer Magazine

Could be Sea Mines which was a type in by Richard Taylor. Was published in Volume 3 issue 9 of Your Computer Magazine. Page 124 (got it in front of me) One of the games I always wanted to type in but never got around to at the time. Just recently got hold of a copy of the magazine but haven't typed ...

Found the instructions here http://www.neoncluster.com/projects-zx8 ... aplin.html

Thanks to Kevman3d on the forums at NZ vintage computer forums. And thanks to Mark as well.

Excellent thanks Mark

Hi,

Would anyone happen to have a parts list for the Maplin Keyboard GA83E?
I need to know which parts go where so I can assemble mine. (instructions of course are missing)

Thanks