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Mini6502 Simulator/Asm!

Posted: Mon Nov 14, 2016 11:52 am
by divsalv
As the title, I created a simple simulator of 6502 cpu with HollyWood, I put the project on GitHub, I hope will be of help to someone.
The management of the part of the screen graphic, reduces the speed of execution, I wanted to ask if there is a way to speed up the execution.
Tested on Win10 with Pentium G3460 3.5 ghz.

Re: Mini6502 Simulator/Asm!

Posted: Mon Nov 14, 2016 6:31 pm
by Allanon
Very interesting work!
Thank you for sharing :)

Re: Mini6502 Simulator/Asm!

Posted: Tue Nov 15, 2016 3:59 pm
by airsoftsoftwair
That's cool! You can try to use DisableLineHook() to make it faster.

Re: Mini6502 Simulator/Asm!

Posted: Wed Nov 16, 2016 2:56 pm
by divsalv
In fact with DisableLineHook () the execution speed increases twice, I made an example, and reaches more than 2 million calculations per second, compared to 1 million without DisableLineHook (), but just add a print, and instructions per second cascade just 300,000 per second, always with DisableLineHook ().

The problem is the management of the graphics, and the print of the register, and then if I put the break too low with waittimer, often the video is not properly done, with a few pixels that is not drawn, because the main loop is too fast .

I rewrote the management of OpCode using indicizate functions, instead of always doing the whole switch cycle, but there is always the problem of the graphics.

I tried to use GlGalore, but the result does not change.

Allanon thank for suggesting the indicizate functions.