Search found 46 matches

by Bukster
Wed Aug 07, 2019 10:07 am
Forum: Welcome Area
Topic: New to the ZX-81
Replies: 4
Views: 350

Re: New to the ZX-81

Get an MP3 player, download some ZX81 software and see what this little machine can do. They are a lot of fun and can do more than you might expect.
by Bukster
Sun Aug 04, 2019 6:10 am
Forum: FAQs
Topic: What does ULA stand for?
Replies: 1
Views: 303

Re: What does ULA stand for?

I think it's Uncommitted Logic Array. So your link was close to the mark.
by Bukster
Fri Jul 26, 2019 9:38 am
Forum: GAMES
Topic: New ZX81 Games
Replies: 141
Views: 96245

Re: New ZX81 Games

I've downloaded it and the source code. I'll check them out over the weekend.
by Bukster
Sun Jul 14, 2019 5:34 am
Forum: GAMES
Topic: 1K Sudoku Solver
Replies: 10
Views: 446

Re: 1K Sudoku Solver

dr beep wrote:
Sat Jul 13, 2019 9:06 pm
BTW: do you use the optimized base where the call to MC is fully placed over sysvar and so saving most bytes?
You bet I did. I just totally copied the code you'd put into the 1K Jewel game and used that. So this program does not ever use the Basic system.
by Bukster
Sun Jul 14, 2019 12:44 am
Forum: GAMES
Topic: 1K Sudoku Solver
Replies: 10
Views: 446

Re: 1K Sudoku Solver

@ Moggy I found the problem. The zero to indicate stop went missing in the change over to the new compiler from the other compiler I had written it on. If I input your clue numbers and hit solve, it goes around and around until it stops with no solution found. I tried your clues with an on line solv...
by Bukster
Sat Jul 13, 2019 10:29 pm
Forum: GAMES
Topic: 1K Sudoku Solver
Replies: 10
Views: 446

Re: 1K Sudoku Solver

@Bukster. Tried the following grid (see picture) on both emulator and real 81. It never seems to get beyond the third line, going into an endless loop as it were. Have run it on emulator speeded up X100 and still no solution after 2hrs run. Just a heads up nothing more as I still think it's great f...
by Bukster
Sat Jul 13, 2019 10:23 pm
Forum: GAMES
Topic: 1K Sudoku Solver
Replies: 10
Views: 446

Re: 1K Sudoku Solver

dr beep wrote:
Sat Jul 13, 2019 9:06 pm

I think you mean COMPILER.
Whoops, brain slip. I did mean to say compiler
by Bukster
Sat Jul 13, 2019 6:20 am
Forum: GAMES
Topic: 1K Sudoku Solver
Replies: 10
Views: 446

1K Sudoku Solver

Sudoku driving you nuts and all you have to help is a 1K ZX81? Don't panic, here's a 1K program that will solve your sudoku for you. Instructions are: N and M = Move cursor around to enter clues 1 - 9 = Enter clue number (zero if you make a mistake to clear a clue number). Clues appear in inverse te...
by Bukster
Mon Jul 01, 2019 10:26 am
Forum: GAMES
Topic: 1K Bejewelled style game
Replies: 3
Views: 336

1K Bejewelled style game

Here's a 1K game I wrote I call Chain Reaction. It's basically a bejewelled game where you swap two numbers to make a line and try to start a chain reaction. You get 1 point for every number removed, then 2,3,4 up to 7 times for a chain reaction. The controls are: Any key to start (gives the randomi...
by Bukster
Sat Jun 29, 2019 11:13 pm
Forum: Welcome Area
Topic: Hello from North-East England!
Replies: 7
Views: 576

Re: Hello from North-East England!

Early computers are still worth studying. Modern computers may seem different, but the underlying technology is essentially unchanged. A lot of people using computers today have no deep understanding of how they actually work. You can learn a lot here.