Sinclair ZX80 / ZX81 / Z88 Forums

yes, 16K or larger capacity RAM packs for the ZX81 should work fine with a TS1000. Also 2K, 3K and 4K made for ZX80 work fine on a ZX81 or TS1000 I Thought a track had to be cut in these ZX80 RAM packs for them to work rather than plug and play as your post suggests, apologies if I've misunderstood...

Unless it's usable on a real zeddy I can't see the point other than a proof of concept for emulator use, if it's just a see what's possible exercise for Eighty One then yes I get it but something for real kit would be more useful I would have thought.

Tried it on real zeddy with ZXpand and it just crashes to the cursor.
Some instruction on how you want it used, type of set up, real kit or emulator etc would be useful.

520 odd guests online not bad for a niche forum!

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Paul is correct in my opinion. The 80's edge connectors were terrible whereas the modern replacements are far better, one example is of those fitted to Charlie Robson's Zxpands. The white issue 6 I have from him has an edge connector that grips like a vice and like all my other spands suffers no wob...

Mentioned on a few other forums too, luckily I have about a dozen or so in my spares box mainly Zilogs including a few CMOS ones which should be enough to see my time out.

I can test but only on LCD monitor as I no longer have a CRT monitor, also is this to be tested with UDG4ZXpand or just plain zeddy?

The power supply is an unregulated one so off load anything up to 14v is normal and once under load it gets pulled down to something more reasonable like 10-11 v, the reg turns this into 5v for the chips and the rest into heat dissipated by the reg's heat sink. Fitting to a switching jobby removes a...

I doubt very much much the caps have anything to do with it, one's a filter and the other a reset cap and you're are positive that all the actives are OK having checked them all, the ROM socket however.

The 7805 should only produce only 5v or near enough not a mixture of 5v and 12v.

Thanks Dasteph, but the intro screen/menu chrs are still showing the snakes as "S" for example and need to be altered to the new chr codes or it looks odd. Speaking of snakes I'm not totally happy with them so may try to improve them and release another chr block so users have a choice. I was going ...