Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:30
You need slow, keepio and change keeper to float
Done that, made no odds.
exxos's Atari, Amiga & retro forum
We welcome retro users & hardware gurus alike! Come and join the party :)
https://www.exxosforum.co.uk/forum/
REV 3 - REV 5 - The beginning (ST536)
Page 23 of 110
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:37
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:39
Well dunno. i never had issues with ram on the ST... worked fine. :)
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:42
No hope for me then :) only works if I invert the RAM clock.. TTRAM does drop a bit in speed, 903% to 847% or something like that.terriblefire wrote: 06 Apr 2021 22:39 Well dunno. i never had issues with ram on the ST... worked fine. :)
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:46
is your ram clock set to 100Mhz, 50mhz or CPU clock speed...exxos wrote: 06 Apr 2021 22:42No hope for me then :) only works if I invert the RAM clock.. TTRAM does drop a bit in speed, 903% to 847% or something like that.terriblefire wrote: 06 Apr 2021 22:39 Well dunno. i never had issues with ram on the ST... worked fine. :)
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:50
CPU CLK50M, RAM ~CLK100M
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:51
Current scores...
- IMG_6393.JPG (406.95 KiB) Viewed 3167 times
Re: REV 3 - The beginning
Posted: 06 Apr 2021 22:58
Hmmm. Yeah leave it like that if its working then... i think later boards i have CPU and RAM at same clock rate.
Re: REV 3 - The beginning
Posted: 06 Apr 2021 23:04
Looks like 847% is the "proper" speed anyway... Mine must have been running too fast for some reason to get 903% originally.terriblefire wrote: 06 Apr 2021 22:58 Hmmm. Yeah leave it like that if its working then... i think later boards i have CPU and RAM at same clock rate.
https://www.exxosforum.co.uk/forum/viewt ... 975#p42329
Re: REV 3 - The beginning
Posted: 07 Apr 2021 10:48
Yes! That's *got* to be the tipping point.exxos wrote: 06 Apr 2021 22:04 Finally looking how things are supposed to be :thumbup:
When high it is either accessing ROM or TTRAM... If it is pulsing low, it is accessing the ST bus.. which is not all that often now :)
Should not have been seeing all those AS30s on the ST side.
:dualthumbup:
BW