On Sat, 30 Sep 2000, Mark Weaver wrote:

> Jeffrey Ohlmann wrote:
> > 
> > --- Bob Nestor <rnestor@augustmail.com> wrote:
> > > Jeffrey Ohlmann wrote:
> > >
> > > >I have several (3) Quadra 840AVs. Today I noticed that one of them
> > > has
> > > >a slot at J24 (I think) on the motherboard, next to the four SIMM
> > > >slots. This slot is occupied by what appears to be a small RAM
> > > stick,
> > > >which has printed on it "2MB SIMM APPLE COMPUTER". What is this, and
> > > >why do the other two machines not have it? I'll add that this
> > > machine
> > > >has a CDROM drive while the others do not, if that's significant.
> > >
> > > Isn't that the Video RAM?
> > >
> > > -bob
> > 
> > Obviously I don't know, but I don't think so, for a few reasons: It
> > doesn't look like the usual Apple VRAM; the Apple Spec says the 840AV
> > has only 512k VRAM built in; and there are four explicitly labeled VRAM
> > slots elsewhere on the board.
> > 
> > Jeff
> > 
> Maybe it's system cache?

Two megs worth?  Not very likely.  Especially not with Apple's brand name. 
Seems like it has to be either video RAM or system RAM in one form or
another. It might have to do with the video input on the AV side or some
such.


David

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