D-Bug & Automation Forum
D-Bug & Automation Forum >> Coding >> MegaSTE cache
https://d-bug.mooo.com/dbugforums/cgi-bin/yabb2/YaBB.pl?num=1179312820

Message started by tobe on 16.05.07 at 10:53:38

Title: Re: MegaSTE cache
Post by ggn on 29.07.07 at 11:54:02
I knew I read this somewhere, now I found a reference ;)

ZWF's Atari STE fanpage has Paranoid's excellent STE programmer's documents, and on page 6 I found the following:


Quote:
 ? How fast is the Mega STE at 16 MHz without the cache ?

 ! Unfortunately, not very much faster than an ordinary 8 MHz STE. The cache might seem small according to todays standard (16 KBytes), but for a system like the Mega STE, it reduces memory accesses dramatically. If you turn off the cache, the 68000 has to fetch everything directly over the 8 MHz bus. Only operations that completely work in the 68000's registers will gain performance.


So if you don't have bus write cycles during the blitter execution, then I guess you can use the cache like that :)

D-Bug & Automation Forum » Powered by YaBB 2.6.0!
YaBB Forum Software © 2000-2022. All Rights Reserved.