Mandelbrot Generator

Discussion about ZX80 / ZX81 Software
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GCHarder
Posts: 427
Joined: Sat Dec 14, 2013 7:46 pm

Mandelbrot Generator

Post by GCHarder »

Here's a new Mandelbrot generator based on an ASCII version I found at "Rosetta Code". See the enclosed Readme.txt for more details.

Regards;

Greg
Screenshots
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ZASCIIbrot.gif (26.17 KiB) Viewed 4263 times
Last edited by GCHarder on Fri Aug 19, 2016 9:15 pm, edited 1 time in total.
Fruitcake
Posts: 351
Joined: Wed Sep 01, 2010 10:53 pm

Re: Mandelbrot Generator

Post by Fruitcake »

Hi Greg

It's an interesting program and nice to see it supports Chroma colour! :D

When I run it without Chroma enabled, I need to select 64K RAM else it crashes. Chroma colour uses RAM at 48-64K and so presumably the program relies on having RAM paged here?
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GCHarder
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Re: Mandelbrot Generator

Post by GCHarder »

Looks like you found a bug...

In the "ZASCIIbrot" program change line 1020 to

1020 LET L=USR IREG

Then add line 1025

1025 IF CHROMA THEN LET L=USR 17146

Luckily, this bug is bypassed when LOADing the pre-rendered files so they work.

Regards;

Greg
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GCHarder
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Re: Mandelbrot Generator Update

Post by GCHarder »

Fixed a couple bugs and added a new Chroma specific animation key. During the animation the "S" key acts as a "solid color" switch, which as the name implies, displays all the characters in solid colors. This is a switch so you can switch back and forth from solid colors to white characters on the colored background.

Regards;

Greg
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ZASCIIbrot.zip
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Fruitcake
Posts: 351
Joined: Wed Sep 01, 2010 10:53 pm

Re: Mandelbrot Generator

Post by Fruitcake »

I've added a link to my website on the page that lists software known to directly drive the Chroma colour facilities:
http://www.fruitcake.plus.com/Sinclair/ ... Colour.htm
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