Sinclair ZX80 / ZX81 Forums

So is mine.

I have done this with a ZX81 and can confirm it is the cheapest way to get a ZX80. I burned an EPROM with the ZX80 image then added the resistors to the CPU and all is good. Paul mentions a reset problem which I overcome by adding a reset switch across the reset capacitor. If I didn't get the "K" cu...

I would also add the double speed ROM to that list, which really does speed up some aspects of BASIC and is in use on two of my zeddies.

The thread and ROM image can be found here...

https://www.sinclairzxworld.com/viewtop ... f=5&t=2986

I always had a love for Andy's Tron Trails so many thanks for this Zsolt.

First one I dug of my scrap pile....

Just to concur with Mark I have had that pack on boards past and may still have one on a scrap board.

I have said it once before and will say it again Lardo your refurbs, expertly done then passed on at a good honest price with an equally honest listing, does you credit and it 's nice to know there are at least 40 odd people who are part of our world, hopefully, with a decent tooter to play with. As...

Excellent post. They are there to be used and abused imo. not polished or put in glass cabinets. The first thing I did to my 80 was fit a switching reg, then ripped the guts out of the modulator to fit a composite board then finally a new ROM for ZXpand use and ended up with a much better tooter. My...

It's weird how the ULA can partly fail. I had one that caused a white screen when certain keys were pressed but not others and was ok with a Memotech keyboard. A change of ULA curing this completely and testing the ULA on other systems which then exhibited the same fault confirmed a partially faulty...

Managed to get to the end screen but needed 20 lives to do it!

A great game with excellent use of the zeddies native chr set.