Sinclair ZX80 / ZX81 / Z88 Forums

You have conflict in the address space. I'm not an electronics expert, but I believe two different signal is comming to the bus at the same time, which makes it a coincident who is winning the signal competition. At best the Zeddy wont work. At worst you destoy one of the chips. Anyone please correc...

That's a good resource you've gathered. Maybe you should add a link to it in your signature. You can simply add a signature to all your post in you profile here at the forum. This would make it easy for us to find the link, because we just need to find one of your posts.

We also have a Spectrum section on this forum. Feel free to ask there.

That's a brilliant job. And it looks gorgeous with the expensive keycaps.

I've received your book with 81 games for Christmas. I believe you also worked on a book with programming examples for 1k games. Has that been released as a physical book yet?

So you have changed the famale jack on the board to a 3 signal connector?

I thought the SZ81's homepage was here: https://www.weggetjes.nl/sz81/

I just saw a cheap Lambda 8300 for sale on eBay, so I thought to share. This sale is not connected to me. Just sharing.

https://www.ebay.de/itm/315071989986

My "model" program contains a routine called FLASHOUT, which copies in its entirety the normal 16-32K program area to the higher one. Why? : A NEW command does not clear the upper memory area. So if, while working on a still dangerous program, I FLASHOUT the code and the computer subsequently crash...

We talked about it back in 2018.

https://www.sinclairzxworld.com/viewtop ... =10&t=3013