Sinclair ZX80 / ZX81 / Z88 Forums

David G.

Thanks for the working example. I had been going through the Dr. Logan's ROM book for a number days trying to figure this out. So glad to get help getting it working. Others, thanks for chiming in. Better to get comments that are not perfect than get no comments at all.

Tim

Thanks for the replies. Stefano - $12C2 is STK-Store and stores registers A, B, C, D, & E to the calculator stack. Logan's book says "Although this subroutine could be used to transfer floating point numbers it is, however, only used to transfer the parameters of strings". It only stores 5 byte (and...

I've been looking into using the FP calculator and I've got it working, except for how to convert a decimal number as a string, into an FP number. The ROM has the "decimal to floating point" routine ($14d9) that seems to take a decimal as a string, convert it to FP and put it on the stack. I've trie...

I've have also heard that War in the East was published for the TS1000, but I've not seen a copy. It also came out for the QL. As for other wargames for the ZX81, "Admiral Graf Spee" looks to be the closest to a true wargame. There are others that look to be resource management-type games with some ...

For assembly, I use PASMO. Documentation is online. sudo apt install pasmo For BASIC, I use zxtext2p. Source is available and it was a quick compile. To convert a .p file to text, then zx81list (source code also available). I also concur with using sz81 as a great ZX81 emulator. It has lots of featu...

Rune,

I've fixed the errors on the page. ZXzine #3 did not have a zip (even though one was listed) and the other problems were just the wrong file names.

Tim

> Sniff....
> No review from Othello in 1K with hires graphics.
> [sad mode on]

There, there, now. I was aiming for the classic Othello programs. I'll look into your and see about doing a review the next issue.

Tim

issue #7 of ZXzine has been posted. I have moved my files over to a new site:

http://swensont.epizy.com/

Just scroll down to find Issue #7.

Tim

I faced two issues when I got my ZX81 in Nov. of 81. 1. Kept over heating and crashing I learn not to use the ZX81 on a shag carpet. Once I put it on a desk or such, it was fine. 2. Moving the ZX81 with the 16K pack would cause a crash When the ZX81 was picked up, the 16K pack was not secure enough ...

ZXzine #6 has been posted: https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxzdmVucWhqfGd4OjdmYTBjMWQ0OGYxZTkzZTQ Or you can find it on my Google Sites Page: https://sites.google.com/site/svenqhj/ This is a special T/S 2068 issue, but there are a few good articles on the ZX81. Th...