unix pc 7300, extneded ram problems, help please!
H. Reza Zarafshar
I also have a 1/2 a meg. on a ram card. After putting one of the combo
cards and populating all of the empty sockets which is supposed one and a
half meg's worth of space, the 7300 reports only 2 meg even though to my
calculations it should report 2.5 meg. Is there anyway I can fix it? or
am I a victim of an early version of the machine?
Reza Zarafshar
312-979-5104
ihnp4!ihreza!reza0
Jonathan Clark
know why he has 1/2 MB on the motherboard, 1/2 MB on a RAM card, and 1 1/2
MB on a combo card and his unix pc only sees 2 MB.
To the best of my knowledge, and contrary to what the manual says, you can
only put one memory expansion card on a unix pc and have the system see it.
The problem is not hardware, so I suppose that there is some hope that this
limit might change in future, but personally I am not holding my breath.
--
Jonathan Clark
[NAC,attmail]!mtune!jhc
My walk has become rather more silly lately.
Harvey S. Cohen
>know why he has 1/2 MB on the motherboard, 1/2 MB on a RAM card, and 1 1/2
>MB on a combo card and his unix pc only sees 2 MB.
>To the best of my knowledge, and contrary to what the manual says, you can
>only put one memory expansion card on a unix pc and have the system see it.
>The problem is not hardware, so I suppose that there is some hope that this
>limit might change in future, but personally I am not holding my breath.
I am writing this on a 7300 with .5MB on the motherboard and two
.5MB RAM cards. It has worked under R2.0, 3.0, and 3.5 of UNIX.
Harvey S. Cohen, mtuxo!hsc
Jonathan Clark
in article <21...@mtuxo.UUCP> h...@mtuxo.UUCP (Harvey S. Cohen) points
out that he has two 1/2MB memory boards and a 1/2MB motherboard and
the system correctly sees 1 1/2 MB of memory contradicting what I
wrote. The explanation is simple: a) I boobed and b) when I said
"memory expansion cards" I meant to say that memory expansion cards
don't count as memory expansion cards.
Never mind, let me try again.
You cannot mix combo card memory and memory expansion card memory and
have the system see all of it. Unless you can put memory expansion
cards in slot n and the combo card in slot m and fiddle it somehow
(but I don't think so). There. Now somebody else can correct me.
Spearman
> have the system see all of it. Unless you can put memory expansion
> cards in slot n and the combo card in slot m and fiddle it somehow
> (but I don't think so). There. Now somebody else can correct me.
I have both a combo card populated with 1 meg and a 512K ram board
running in addition to my 512 on board, for a total of 2 meg. The
problem with the original posting, I think, is that there is no
configuration of possible slots, etc. which allow more than 2 meg
of memory if you have only 512K on board. At least I could not
find anything in the installation guide which would provide this.
Steve Spearman ihnp4!ihop3!spear
Bamford
> only put one memory expansion card on a unix pc and have the system see it.
> Jonathan Clark
I have a pc7300 with 1/2 Meg motherboard. When I ordered it, I asked for
1 meg, so they sent me an additional 1/2 meg card. This works fine.
Later, I got a combo RAM/EIA board, with another 1/2 meg. I installed this
and the system DOES see 1 1/2 meg total. Perhaps there is something
strange about the combo board as compared to a regular RAM board...
On the other hand, perhaps there is some upper limit on the amount of RAM
on expansion boards.
--
Harold Bamford
AT&T Bell Labs
IE 2F-524 (312) 369-7397
Bob Hoffman
on the motherboard and 1/2mb on an add-on card. We bought a 2mb add-on
card, and it turned out that the 1/2mb card has to be removed first.
The configuration guide that comes with the 2mb card gives the various
possible configurations, and you cannot have any other RAM cards with
it. Therefore, the maximum memory you can have is 2mb plus whatever is
on your motherboard, which gives us 2.5mb.
--
Bob Hoffman, N3CVL {allegra, bellcore, cadre, idis, psuvax1}!pitt!hoffman
Pitt Computer Science hoffman%pitt@csnet-relay
Jim Webb
> I have not read the contract) offer options for the unix pc which AT&T
> does not. Now doesn't *that* sound intriguing?
Just ducky :-), I can see it now, CT brings out a piece of hardware that
the AT&T software doesn't know about, but the CT release does. I guess
we can expect CT-UNIX 3.0.5.1.4... To quote Bill The Cat, ACKKKKK!!!!!!!
--
Jim Webb "Out of phase--get help" ...!ihnp4!hropus!jrw
"Use the Force, Read the Source"
Jonathan Clark
this, I think that I'm going to shut up and I now claim that I know
nothing at all about the unix pc, much less this problem. :-)
The trouble is that I know what in general terms what the problem is
(and no I can't tell you), but I don't know enough about the rest of
the hardware to make a definitive pronouncement. I just wish that I'd
realized this before. Maybe I'll take apart the module and see. No,
that would require thinking.
Does anyone out there have a unix pc which correctly sees more than
1 1/2 MB of installed memory? If so, how much memory, in what
combination, which slots and so on. Answers by mail, kudos to the
winner. I'll summarize. Hardware hackers and people who have an
expansion box full of 1/2 MB memory cards are excluded.
An extra point about CT selling the unix pc - they may be able to (and
I have not read the contract) offer options for the unix pc which AT&T
does not. Now doesn't *that* sound intriguing?
--
Smith
%% know why he has 1/2 MB on the motherboard, 1/2 MB on a RAM card, and 1 1/2
%% MB on a combo card and his unix pc only sees 2 MB.
% you can only put one memory expansion card on a unix pc and have the
% system see it. Jonathan Clark [NAC,attmail]!mtune!jhc
You can get the combo board and .5M board both to be recongised. It makes
a diffrence which slots the bords are put in. If you look in the appendix
of the installation guide it tells where to put them. (NOTE they number
the slots diffrently then other people.)
-jim colsmith
--
J. S. Smith AT&T IW
There are lots of opinions around this place, but these
are mine and no one else's.
ihnp4!ihu1e!jss