3 May
2001
3 May
'01
4:31 p.m.
I thought they might be the same as the old 4256 (and possibly the 41256)
dram that we used to use in them. The chips soldered on don't have the speed
on them so I'm sure just testing some 70's and 80's will let me know if
they'll work. I'm almost into my old chip stashes in storage so maybe I'll
have an LJ III with 5 mb soon. Thanks
-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of Ethan Dicks
Sent: Thursday, May 03, 2001 9:52 PM
To: classiccmp(a)classiccmp.org
Subject: RE: 1mb x 1 memory chips for printers
--- Russ Blakeman <rhblake(a)bigfoot.com> wrote:
So am I to assume (since I haven't dealt with
loose DRAM in
years) that the
HY51C4256S-C printed on the 20 pin DIP chips are
4x256, and if so anyone
have a source? I need at least 16 to pop this Laserjet III up
to the full 4
mb. I don't imagine they are the same as the
old 256k DRAMs in the older
PC,XT and some AT class machines...
Depends on the machine. Some yes, some no. If you find an XT or AT or
video card with 20-pin DRAMs with 4256 in the middle of the number and
they are fast enough (don't know what yours requires, but my 3rd party
card has 60ns parts; probably only needs 80s) they should work.
-ethan
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