Search found 256 matches

by GCHarder
Tue Aug 11, 2020 9:06 pm
Forum: Software
Topic: 2001 - A ZX81 Odyssey
Replies: 0
Views: 95

2001 - A ZX81 Odyssey

2001 - A ZX81 Odyssey This "demo" kind of reminds me of the "Trip to Infinity" ending in 2001, well I said kind of. It's a never ending journey through the ZX81's various graphic capabilities. There are three versions, depending on your hardware. 2001-Z Standard version, ZX81+16K RAM pack, tested on...
by GCHarder
Sat Jul 25, 2020 7:11 pm
Forum: Development
Topic: What's the deal with EXX
Replies: 2
Views: 285

What's the deal with EXX

What's the deal with EXX, I'd love to use this instruction but every time I do it crashes my program. Must be something to do with the display system, similar, I suppose, to using the IX register. Toni Baker kind of implies that it can be used "quite safe(ly)". From MMC on the ZX81... "EXX As well a...
by GCHarder
Fri Jul 24, 2020 11:15 pm
Forum: GAMES
Topic: Nice Blackjack game & Matrix Rain
Replies: 3
Views: 605

Nice Blackjack game & Matrix Rain

Blackjack video

https://m.youtube.com/watch?v=-rBaJHEdNKk

Download site listed in comment.

The Matrix Rain video

https://m.youtube.com/watch?v=ytAl5UW1woY

Very impressive demo.

Enjoy;

Greg
by GCHarder
Tue Jun 16, 2020 10:09 pm
Forum: Software
Topic: ZigZags by Noice, colorized
Replies: 2
Views: 652

Re: ZigZags by Noice, colorized

Thanks, that's a neat trick, I'll have to remember it.

Regards;

Greg
by GCHarder
Mon Jun 15, 2020 9:53 pm
Forum: Software
Topic: ZigZags by Noice, colorized
Replies: 2
Views: 652

ZigZags by Noice, colorized

ZigZags by Noice, nice programs originally designed for 1K ZX81. The original programs are Noice-1.p (AKA Severely Limited v1) Noice-2.p (AKA Severely Limited v2) ZigZags is my full screen version. Can anyone explain to me how these programs, Noice-1 and 2, even LOAD and RUN. There is absolutely no ...
by GCHarder
Wed Mar 04, 2020 9:51 pm
Forum: ZX BASIC
Topic: [D_File] Relocated screen page in Basic.
Replies: 5
Views: 2398

Re: [D_File] Relocated screen page in Basic.

Wouldn't it be easier just to use your screen compress routines?

viewtopic.php?f=5&t=1587&p=19562&hilit= ... ess#p19562

But, I guess it's not strictly speaking BASIC then.

Regards;

Greg
by GCHarder
Sat Feb 15, 2020 9:42 pm
Forum: Sinclair Misc
Topic: Load programs via PC to TS1000
Replies: 3
Views: 4043

Load programs via PC to TS1000

https://www.youtube.com/watch?v=4IS2MbAGATo Short demo of OTLA 2.2 app. which is available here... https://code.google.com/archive/p/otla/downloads, Official version? http://retro.lisias.net/computing/misc/otla/, Unofficial version? I've never seen this app before, but it looks pretty useful. Regard...
by GCHarder
Mon Feb 10, 2020 8:31 pm
Forum: Software
Topic: Cellular Automata
Replies: 2
Views: 3819

Cellular Automata

"The Universe of Cellular Automata" by Hardin Brothers, PCResource 09/1989. This was another article I've had hidden in my archive for years, which I re- cently rediscovered. Some more interesting programs written in 8086 assembly, C and Quick Basic. I've included the scans for those interested, the...
by GCHarder
Mon Feb 10, 2020 8:25 pm
Forum: Sinclair Misc
Topic: ZX81 Wall
Replies: 4
Views: 3936

Re: Two new ZX81 walls

ZX81 specific wallpapers
Ode.jpg
Pratchett.jpg
by GCHarder
Tue Jan 14, 2020 11:02 pm
Forum: ZX BASIC
Topic: Resizing the screen (number of lines)
Replies: 7
Views: 3473

Re: Resizing the screen (number of lines)

Maybe you're thinking of...

POKE 16418,X where X is the number of lines in the bottom part of the screen. This is normally 2, 0 gives 24 lines to the top part of the screen, 10 would devote 10 lines to the bottom and 14 to the top.

Not sure if this works on a 1K ZX81 though.

Regards;

Greg