Sinclair ZX80 / ZX81 / Z88 Forums

Mark, thanks for the suggestions. None of the chips are socketed, but having received a new batch of 2114's in today was planning on doing a little soldering this evening. Instead, I will follow your plan and see what happens, taking it one step at a time. Will first install the capacitors and the e...

Thanks for getting back to me Mark. Unless I just don't know what to look for ( a distinct possibility) there does not appear to be anything going to 23B on the Brenner design I am using. Take a look below and see if that is correct.

The 0.01" music wire has arrived, and have done the measurements of the stylus. Will hopefully get a couple of prototypes done this evening.

Hi Mike, I had to search a while. Would you be so kind to also list it in the ZX80 section?
And it extends the internal ram by up to 3 k giving a total of 2 to 4 k of RAM.

Will do, Paul, and thanks for the 4K reminder. The SMR listing has been updated.


Thanks,
Mike

The ZX80 3K memory pack reproduction has just been posted on the SMR site. Thanks to everyone here for your generous help and advice!

Man, that is great to see! And I thought I had your only stylus. Please send a close-up of how you attached them to the posts.

Without your generous help it couldn't have happened!


Mike

Great looking belt! I really like the way the teeth fit. Good to know that about cleaning.

Thanks for pitching in, Moggy. Since I have Francois' styli held captive for the moment we'll have to wait until I get them back to him before a real test can commence. I searched for hours to find the .016" music wire that came in and it is noticeably thicker than the wire used on the stylus. Not o...

Was that RAM pack actually available at the time of the ZX80?

That is great news, especially the fit of the teeth in the sprocket grooves. I couldn't have gotten them that close without the actual pieces you sent. As for not having the styli attached during your test, I would suspect that the printer doesn't know (or care) whether they are there or not. With t...