Search found 1156 matches

by dr beep
Sun Mar 24, 2019 11:58 am
Forum: ZX BASIC
Topic: What is so bad about using Floating Point math in a BASIC program
Replies: 3
Views: 119

Re: What is so bad about using Floating Point math in a BASIC program

It is slow, even in the display of a number. I recently coded USCII and ran the same program in pure ZX81 BASIC and with USCII which only does a different way of displaying a number. It only accepts a positive rounded number to be printed. Even with this change only the ZX81 BASIC is twice as fast a...
by dr beep
Fri Mar 22, 2019 9:03 pm
Forum: Development
Topic: "Extreme" 1k programs for ZX80 and ZX81: starter kit
Replies: 4
Views: 840

Re: "Extreme" 1k programs for ZX80 and ZX81: starter kit

I have optimized the base model further for coding machine code in 1K.

The whole BASIC-call to MC is set over sysvar and the repair after loading too.
This will give the maximum codeable bytes in 1K.
modelzx81.asm
(1.45 KiB) Downloaded 9 times
by dr beep
Mon Mar 18, 2019 8:31 pm
Forum: GAMES
Topic: New ZX81 Games
Replies: 133
Views: 76080

Re: New ZX81 Games : GAME 57 in 1K hires

Name of Software: Startrip Author: Johan "Dr Beep" Koelman Release Date: 18/03/2019 Requirements (eg. 1K, 16K, AY Card, Hi-Res Scheme): 1K hires Description: Navigate your spaceship through space avoiding targets Startrip.png Download link (if available for download): startrip.p Commercial / Public ...
by dr beep
Sat Mar 09, 2019 5:36 pm
Forum: Welcome Area
Topic: Hi from Brisbane.
Replies: 4
Views: 268

Re: Hi from Brisbane.

HI everyone, it's great to see a ZX community still exists when I thought these things went the way of the DoDo. I learned to program on a ZX81, originally with just 1k which taught me how to write code very efficiently. I had a huge library of games of which my fave was Mazogs. I went to school in...
by dr beep
Sun Mar 03, 2019 11:18 am
Forum: ZX Spectrum Lounge
Topic: Why did the sinclair QL fail?
Replies: 2
Views: 283

Re: Why did the sinclair QL fail?

Lack of software?
Compatability?
by dr beep
Sat Mar 02, 2019 2:29 pm
Forum: Welcome Area
Topic: Hello all!
Replies: 7
Views: 382

Re: Hello all!

To the new forummers! If you haven't played with a ZX81 since many moons..... then take a look in the games section. A lot has changed over the last years. With proper hardware you can even play laserdisc games on a ZX81 Or get stunned by all other games created after your ZX81 started gathering dust.
by dr beep
Fri Mar 01, 2019 11:07 pm
Forum: GAMES
Topic: New ZX81 Games
Replies: 133
Views: 76080

New ZX81 Games : GAME 56 in 1K hires

Name of Software: Solitaire Author: Johan "Dr Beep" Koelman Release Date: 01/03/2019 Requirements (eg. 1K, 16K, AY Card, Hi-Res Scheme): 1K hires Description: The classic game of Solitaire now in 1K hires Solitaire.png Download link (if available for download): solitaire.p Commercial / Public Domain...
by dr beep
Wed Feb 20, 2019 10:07 pm
Forum: Development
Topic: USCII, the User Specified Character Integrated Interpreter
Replies: 5
Views: 738

Re: USCII, the User Specified Character Integrated Interpreter

I can easliy add an option to print leading zero’s on a number.
You can also choose to not print leading zero’s

So score could be
Score=100
Or
Score=00100
by dr beep
Tue Feb 19, 2019 8:40 pm
Forum: Development
Topic: USCII, the User Specified Character Integrated Interpreter
Replies: 5
Views: 738

Re: USCII, the User Specified Character Integrated Interpreter

I coded DOGCATCH also in pure ZX81 BASIC.

That game is slower than the version in USCII.
This is possible due to a simpler numberprinting.

Both games run simultaneously (although bad resolution)
https://youtu.be/rwzcrSbIJkk