3 May
2001
3 May
'01
9:50 a.m.
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...
-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of Mike Ford
Sent: Thursday, May 03, 2001 11:24 AM
To: classiccmp(a)classiccmp.org
Subject: RE: 1mb x 1 memory chips for printers
Does it happen to say what printers the boards are
used in? I
have a Pacific
Data Products board from a Laserjet III that has 2
mb worth (16 chips)
soldered on and two banks of 8 blank sockets to add another 2mb.
The chips
are marked HY51C4256S-C and are 20 pin DIP
chips/sockets.
Only a handfull of them are in just static bags, and even those clearly
have the models identified so far. Most of them are in the new retail
package with a little booklet etc.
That memory looks like 4 bit x 256k, which seems also common. When I found
a board for my NEC Silentwriter 2 model 90, I started bidding in ernest,
and stopped reading the other boxes. I really have no interest in the rest
except to sell them, anybody wants a "ready to be filled
expansion card" $5
and shipping, 3/$10, 10/$22, etc.