Sinclair ZX80 / ZX81 / Z88 Forums

I liked your paper and samples on the One Dimesional Cellular Automata on the ZX81.

Take a look at the ZX-LSYS which I just posted, you might find it interesting.

Regards;

Greg

Something new, a Lindenmayer Systems (L-SYS) program for the stock 16K ZX81/TS 1000.

Everything is explained by running the Readme.p file.

Give it a try, make some of your own definitions. Sample definitions are contained in the Parameters.txt file.

Regards;

Greg

Another of my old programs resurrected from the scanned pages.

An umpteenth version of Data, Read and Restore commands for ZX Basic. If nothing else, it's interesting in that it's a good example of manipulating string variables from within the machine code program.

Regards;

Greg

Hi Siggi; Yes, that would be me, those were fun times. Sad to hear about Fred's passing. I only go interested in the ZX81 again a couple months back, so I'm relearning everything. I was surprised to see much of my old stuff available on line, who would've though. Sadly, all my old hardware software ...

Here's a type-in I did from Your Computer 8305. It's a nice Basic Listing program. It comes in very handy when comparing a printed listing from a magazine to what you've typed in, to see if they match. The only problem is line numbers for 0 to 999 aren't padded with spaces, so there's not an exact m...

Hi All; Don't know if this is redundant but I found this at http://www1.cs.columbia.edu/~sedwards/classes/2006/w4115-fall/reports/zx81basic.pdf Looks like some kind of project to write a Java interpreter for ZX81 Basic. By eliminating Arrays and "slicing" he omits one of the most powerful features o...

Hi All;

Ah, the T/S 1500, the real orphan of the T/S clan. Did you know the T/S 1500 was high res capable right out of the box... well almost. Read the attached article.

Note, the routines won't work in EightyOne, the author probably didn't even know about this behavior.

Regards;

Greg

Hi All;

I tried uploading this yesterday but haven't seen it yet, so here's another try without the big explanation, which I don't want to retype as it might not work. The attached mag scans pretty much explain it anyway.

Regards;

Greg