USR quad modems... (ontopic - really!)
ard at p850ug1.demon.co.uk
Sat Aug 19 17:51:00 CDT 2006
[CoCo 3 GIME]
> >> I would assume the controller would exploit page mode references
> >> (especially when dealing with sequential accesses like video).
> > I am not sure, and the service manual (which I have) doesn't make any
> > obvious reference to this.
> Any timing diagrams for DRAM access? You'd recognize the page mode
> cycles by the lack of a 1:1 pairing of RAS with CAS.
Sure. But I think the only timing diagram is a 'representative' one
showing a normal cycle. No idea if it does other types of cycle as well.
More information about the cctech