Posted By
Litwr
on 2017-02-18
01:56:02
|  Re: A mathematical demo
4510 showed that it is possible to make 6502 up to 30% faster. They could also skip a lot of 65C02 poor extensions and add the second accumulator, multiplication, division, ... You mentioned unreleased Synertec 6509 which might be as fast as 4510...
[6509] Thank you for some work with my codes. However it is a bit off topic to discuss 6509 programming at Commodore+4 forum. There was a Commodore with 6809 but it is an impossible rarity.
Your notes about Y register are not correct. It is always used in a context where it is so fast as X in the main loop between labels 'loop2' and 'l4'.
You know that there are several programs mentioned at the Dragon forum that work right at 1.7 MHz. They demonstrate the self refreshing code. Pi-spigot maybe self refreshing too.
|
