Flowcode Support Board

I posted a simple Brainf**k compiler a few days ago.

I had an idea for a major improvement - rather than a (rather large) jump table - I would compile the jumps into the program code. Now jumps add 4 bytes per loop rather than a fixed table of 40k

So - with a little fiddling I got the mandelbrot.bf program to run on an esp32. The code is from https://github.com/ErikDubbelboer/brain ... delbrot.bf
and all credit to Erik for this incredible achievement!

To run - it only outputs a newline at the end of each line - so set PuTTY or your chosen terminal program to output a carriage return on newline.

To avoid WDT errors - I add a 100ms pause every 100000 bf instructions executed - I didn't do any tests to see how many loops could be run - so this could possibly be made a bit faster.

The mandelbrot set is output (slowly!) as an ASCII image - with the letters indicating how may iterations are needed to go to infinity..
(Sorry might have had the wrong file before)


Martin

Changing the check on 'tim' in ExecuteBF to every 500000 loops gives a very nice speedup and still no wdt problems... and just tried 1000000 with a 50ms delay and all good too! - now up to 5000000 bf instructions before delay!

Compiling optimised for performance (idf.py menuconfig) gives a little extra whizz too

About 45mins!

Hi

Impressive stuff indeed.

I hope that's a screenshot from your Sinclair

Regards

From the esp 32 to PuTTY. The flowcode compiled and then runs the brainf**k program..

Cool considering the only instructions are +1, - 1, next cell, previous cell, loop and print!

Turing complete!