256k x 4 Re: finding old RAM

From: Teo Zenios <teoz_at_neo.rr.com>
Date: Wed Mar 24 07:37:53 2004

----- Original Message -----
From: "Joe R." <rigdonj_at_cfl.rr.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk_at_classiccmp.org>
Sent: Wednesday, March 24, 2004 7:46 AM
Subject: 256k x 4 Re: finding old RAM


> At 01:56 AM 3/24/04 -0500, you wrote:
> >
> >----- Original Message -----
>
> >>
> >
> >I need 16 of the following for my Amiga 2091 SCSI card (just got it with
a
> >2000HD system today):
> >
> > CMOS 256K x 4 DRAMs (44C256) rated at 120 ns or faster.
>
> Those are EASY to find. Just go to a surplus store and grab the old VGA
> type video cards. A lot of them used those chips and they're frequently
> socketed. You need to check the part numbers, the 4 x 256k chips are
> available with a number of different part numbers but the PNs are usually
> some variation of xxxx4256-xxx.
>
>
> >
> >Without memory on the card the SCSI controller can't do DMA transfers, so
> >its running as fast as a BIG floppy drive.
> >
> >Anybody have a box of these in their parts bins?
>
> Yeap :-) I use them in my HP Viper cards. I picked up over 200 of the
> ICs in video cards in one trip to a surplus store.
>
> Joe
> >
> >
> >
>

Any chance you could part with 16 of them?

I only had 2 here (from an old vga card) and those ended up in my Diamond
ISA video card (tseng et4000ax) used in my 386/40 old dos game rig.
99% of the computers I deal with use either proprietary memory SIMMs or
standard 30 pin SIMMs and up, so I haven't needed to source loose drams
before.

Teo
Received on Wed Mar 24 2004 - 07:37:53 GMT