Sinclair ZX80 / ZX81 / Z88 Forums

I have added quite a few extensions in the extensions page of the CB2 micro. All of the presented extensions have been tested. More to come
http://cb2.qrp.gr/extensions

Very impressive. I can't find any info on your page, how to connect VGA or HDMI. The KIT output is SCART (PAL/NTSC). If your TV has not got SCART inputs you may use one of these https://www.ebay.com/sch/i.html?_from=R40&_nkw=SCART+TO+HDMI&_sacat=0&rt=nc&LH_BIN=1 They are very cheap. Same for VGA. O...

Here is my collection http://qrp.gr/zx80/ go to the "Software" link Nice site! Even if it-s still a pre-release (me too was absorbed in new work and other stuff) if you like you can add also the "1K Real Chess for ZX80" to it! This is the link to the sw in .o in case: https://sinclairzxworld.com/vi...

McKlaud wrote: ↑Thu Nov 07, 2019 5:30 pm Impressive work! I would be interested in bare PCB if possible.

Hi there, I've sent you a PM.

Hi, and excuse me, I know that this forum is mainly for sinclair machines, but I couldn't resist sharing this with you! You want to build your own BASIC color microcomputer within 30 minutes? You can do it with the CB2 micro KIT. It is easy, quick and cheap! What is it? The CB2 micro, is perhaps, th...

Neazoi: hm, you are probably right. I first imagined that it really WAS a true ZX80/81, but they probably mean it is possible to switch ROM from 4k to 8k. So silly and dishonest to claim ZX81-compatibility :) Oh well, then I really MUST build an NMI-solution for the Minstrel I already have. Might s...

Neazoi: I was thinking about the ZX81-compatibility mainly. I'm sure the ZX80-parts are just plain copied from the original, but the NMI-circuitry has a few different implementation variants. Also, the switching between the ZX80- and ZX81-mode can possibly differ too. For example, a ZX81 in FAST mo...

Great to hear that you have one Jens! I have all the original docs and pieces, it's just not built yet. Do you have any comments on the compatibility of the ready-built computer? Any other opinions about it? I am really tempted to build it and try it out! Without seeing a closer photo, I believe it...

McKlaud wrote: ↑Wed Feb 20, 2019 10:30 am Lol,

It is me, I’ve starter this thread dear @neazoi!

Oh I haven't noticed it thanks
So do you sell PCBs for the JA? I would be interested. Please PM.

Hi! recently I was able to assemble a Juppy replica provided by McKlaud. He also guides and help me in the process. I post some pictures into my FB https://www.facebook.com/pg/LeyendasDe8BitsEnLaArgentina/photos/?tab=album&album_id=2236862283038890 Who is McKlaud and how can we reach him to get a P...