Search found 2060 matches

by dr beep
Mon Jun 05, 2017 7:40 pm
Forum: Development
Topic: Lode Runner on the ZX81?
Replies: 54
Views: 22711

Re: Lode Runner on the ZX81?

Well, "Calculus Mazximus" is ready, time to pick up LODERUNNER again.
First movement bug solved. Setting back background of ladder went wrong.
by dr beep
Mon Jun 05, 2017 9:28 am
Forum: Development
Topic: Calculator language
Replies: 21
Views: 8375

Re: Calculator language

My latest game "Calculus Mazximus" is calculating a lot, but since the RST-routine is rather slow I programmed all routines in MC self. I once altered a Mandelbrot that used ZX Spectrum calculator into as much machinecode and as less possible RST-code. I was able to double the speed only by replacin...
by dr beep
Sun Jun 04, 2017 10:42 pm
Forum: Development
Topic: Calculator language
Replies: 21
Views: 8375

Re: Calculator language

I don't get the question.

I have used i.e. the calculator RST on the ZX Spectrum to perform some calculation, but is that what you want to know??
by dr beep
Sat Jun 03, 2017 10:29 pm
Forum: Development
Topic: 1K hires: calculation game
Replies: 33
Views: 9597

Re: 1K hires: calculation game

Calculus Mazximus, the making of Intro: I always wanted to code the numbergame of "cijfers en letters". With the rolling of FRUITMACHINESIMULATOR I thought it would make a nice appearance on the ZX81. The game should have a solvingroutine as well. However.... To calculate all solutions you would nee...
by dr beep
Mon May 29, 2017 5:18 pm
Forum: GAMES
Topic: New ZX81 Games
Replies: 363
Views: 682755

New ZX81 Games

Name of Software: Calculus Mazximus Author: Johan "Dr Beep" Koelman Release Date: 29/05/2017 Requirements (eg. 1K, 16K, AY Card, Hi-Res Scheme): 1K, LOW res Description: Beat the computer by calculating the number. Screen.png Download link (if available for download): calcmax.p Commercial / Public D...
by dr beep
Mon May 29, 2017 4:23 pm
Forum: Development
Topic: 1K hires: calculation game
Replies: 33
Views: 9597

Re: 1K hires: calculation game

Pfeeeehhh,


I managed to fit the game in 1K and show a computersolution.
Found a calculationbug, repaired it and added display and then worked my way out of saving bytes to make it fit 1K.
Now I will releasing the lowres game soon.......
by dr beep
Sat May 27, 2017 4:35 pm
Forum: Development
Topic: 1K hires: calculation game
Replies: 33
Views: 9597

Re: 1K hires: calculation game

Lost a few days now I found out that the bruteforcemethod isn't calculating enough combinations for good results.
So I need to find a way to use first method, but in less memory....

This is a tough one to fit 1K with solutiondisplay and proper solutions.
by dr beep
Fri May 26, 2017 9:11 pm
Forum: Development
Topic: 1K hires: calculation game
Replies: 33
Views: 9597

Re: 1K hires: calculation game

I altered my initial idea, also due to a slower ZX81 than the ZX Spectrum. I had a routine that should end in app. 20 sec, but 1) it didn't 2) it costed too much memory. Now I made the routine to just bruteforce do all calculations and get interrupted by a timer after 20 sec. This made the program f...
by dr beep
Thu May 25, 2017 9:53 pm
Forum: Development
Topic: 1K hires: calculation game
Replies: 33
Views: 9597

Re: 1K hires: calculation game

I am struggling to fit the display in 1K lowres version.
I think I am at the right track, but some alterations are still needed to fit 1K.
by dr beep
Wed May 17, 2017 10:06 pm
Forum: Welcome Area
Topic: Hi ZX Community
Replies: 14
Views: 7777

Re: Hi ZX Community

Hello and welcome.

You can convert .P-files on a PC to WAV-files which you can play and load into real ZX81 with the cassettecable.
No tapedeck needed.

As for development... do it on a PC and load into real machine to see how it works out.