Search found 250 matches

by GCHarder
Sat Feb 15, 2020 9:42 pm
Forum: Sinclair Misc
Topic: Load programs via PC to TS1000
Replies: 2
Views: 226

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: 1
Views: 387

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: 1604

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: 1393

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
by GCHarder
Sun Jan 05, 2020 9:55 pm
Forum: Software
Topic: OpArt for the ZX81 with Chroma
Replies: 2
Views: 952

Re: OpArt for the ZX81 with Chroma

It has to do with differences in the "expression evaluator" between the two ROMs, at 0F55 in edition 2. Any app using the evaluator, such as Hot Z, will crash. Try this on both ROMs PRINT +1.

Unfortunately, there's no easy work around for this.

Regards;

Greg
by GCHarder
Thu Jan 02, 2020 8:19 pm
Forum: Software
Topic: OpArt for the ZX81 with Chroma
Replies: 2
Views: 952

OpArt for the ZX81 with Chroma

Designed for Chroma but works without. Tested in emulation only.

Regards;

Greg
OpArt.zip
Program and docs
(997.74 KiB) Downloaded 34 times
by GCHarder
Sat Dec 28, 2019 8:08 pm
Forum: Software
Topic: New Year Fireworks, Colorized
Replies: 0
Views: 653

New Year Fireworks, Colorized

I don't know who wrote this, I just colorized it for Chroma. I assume it was posted here somewhere before, but a search didn't find anything. Anyway, kudos to the original author, it's quite a nice display.

Regards;

Greg
Fireworks.gif
Fireworks.gif (1.78 KiB) Viewed 653 times
by GCHarder
Fri Dec 20, 2019 12:17 am
Forum: Development
Topic: New ZX80 cases
Replies: 19
Views: 1903

Re: New ZX80 cases

https://m.facebook.com/groups/sinclairc ... view=group

This is "public" Facebook group. You don't have to be a member, I'm not. I've been able to read it without any problems. However, you do get a persistant NAG screen though.

Regards;

Greg
by GCHarder
Sun Dec 08, 2019 12:00 am
Forum: GAMES
Topic: Pac man on the ZX81
Replies: 12
Views: 1901

Re: Pac man on the ZX81

Maybe the most ambitious Pacman was posted by Brian Lewis, pseudo-hires and the behavior of the ghosts was supposed to mimic the the original.

viewtopic.php?f=4&t=1306&hilit=Bob+lewis

Regards;

Greg

PS this thread should probably be moved to the games section.
by GCHarder
Fri Dec 06, 2019 11:24 pm
Forum: GAMES
Topic: Pac man on the ZX81
Replies: 12
Views: 1901

Re: Pac man on the ZX81

There are literally dozens of versions, commercial and mag type-ins. All the early 80's arcade hits had ZX81 versions, Defender, Scramble...etc. There are probably 20 or more versions of Space Invaders. Of course the quality varies greatly. Most of these are available in the ZX81 software collection...