Search found 269 matches
- Mon Feb 10, 2020 8:31 pm
- Forum: Software
- Topic: Cellular Automata
- Replies: 2
- Views: 7088
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...
- Mon Feb 10, 2020 8:25 pm
- Forum: Sinclair Misc
- Topic: ZX81 Wall
- Replies: 4
- Views: 9037
Re: Two new ZX81 walls
ZX81 specific wallpapers
- Tue Jan 14, 2020 11:02 pm
- Forum: ZX BASIC
- Topic: Resizing the screen (number of lines)
- Replies: 7
- Views: 6432
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
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
- Sun Jan 05, 2020 9:55 pm
- Forum: Software
- Topic: OpArt for the ZX81 with Chroma
- Replies: 2
- Views: 3775
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
Unfortunately, there's no easy work around for this.
Regards;
Greg
- Thu Jan 02, 2020 8:19 pm
- Forum: Software
- Topic: OpArt for the ZX81 with Chroma
- Replies: 2
- Views: 3775
OpArt for the ZX81 with Chroma
Designed for Chroma but works without. Tested in emulation only.
Regards;
Greg
Regards;
Greg
- Sat Dec 28, 2019 8:08 pm
- Forum: Software
- Topic: New Year Fireworks, Colorized
- Replies: 0
- Views: 5630
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
Regards;
Greg
- Fri Dec 20, 2019 12:17 am
- Forum: Development
- Topic: New ZX80 cases
- Replies: 28
- Views: 18432
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
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
- Sun Dec 08, 2019 12:00 am
- Forum: GAMES
- Topic: Pac man on the ZX81
- Replies: 12
- Views: 8127
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.
viewtopic.php?f=4&t=1306&hilit=Bob+lewis
Regards;
Greg
PS this thread should probably be moved to the games section.
- Fri Dec 06, 2019 11:24 pm
- Forum: GAMES
- Topic: Pac man on the ZX81
- Replies: 12
- Views: 8127
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...
- Sat Nov 30, 2019 7:55 pm
- Forum: ZX BASIC
- Topic: HLIN & VLIN BASIC extensions
- Replies: 2
- Views: 2483
HLIN & VLIN BASIC extensions
Versions of Applesoft's HLIN and VLIN commands for the ZX81.
See enclosed .txt file for more info.
Regards;
Greg
See enclosed .txt file for more info.
Regards;
Greg