Re: What's system does a ROM01 support?

[dalloff@gcfn.org (Dave Althoff Jr)]

Jeff Blakeney (CUTjefbla@bconnex.net) wrote:
: On Thu, 15 Feb 2001 20:38:20 GMT, "Mike Keppel"
: <lps_keppel@hotmail.com> wrote:

: >Thanks for the info.  Where are the jumpers for the ram located at?

: On the Apple made memory expansion card, there are two sets of pins
: near the front of the card.  One set points up, the other down.  They
: do have J1 and J2 labels on them.

: My memory may fail me here but I believe the valid memory
: configurations are:

:      Memory   Sockets    J1    J2
:      ------   --------   ---   ---
:      256KB    UA1-UA8    off   off
:      512KB    UA1-UA16   on    off
:      1024KB   UA1-UB16   on    on

: Note that 768KB is not a valid setting.  You must fill the top right
: bank of 8 sockets for 512KB and then fill the entire bottom row of 16
: sockets which will take you to 1024KB.

Wait a minute.  I thought sure I read someplace that 768k is indeed a
valid setting (logically it would be off...on) but that there are
perfectly valid reasons for not using that configuration.  I'm rummaging
around the office right now looking for that...I think I have a manual for
the card around here someplace.....

I dunno.  Maybe I'm remembering it wrong, but I could swear I read
someplace that 768k is a valid setting, but that it is impractical for
some reason...

--Dave Althoff, ][.
-- 
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