Need help identifying the following IC/CHIP - The next saga

From: Ram Meenakshisundaram <rmeenaks_at_olf.com>
Date: Thu Nov 30 13:10:50 2000

Hi,

Thanks for everyone who helped identify this EPROM chip. I just got yet
another BBK-S4 that works. What I want to do is get a replacement EPROM
so that I can fix the first board. Anyone know where I can get this
chip from???

Ram

Ram Meenakshisundaram wrote:
>
> Hi,
>
>
>
> As my transputer collection increases, I just received a broken BBK-S4
> (Sparc-based SBUS transputer link adapter). As far as I can tell, the
> only broken piece is the firmware IC. The IC actually was broken in
> half exposing the actual IC. I think someone was trying to extract it
> incorrectly and it opened up. The delicate wires are snapped as
> well. I hope that the firmware is downloaded to the chip each time it
> is fired up, but I am not sure. The chip is labelled as:
>
>
>
> TOSHIBA
>
> TC57H256D-70
>
> JAPAN 8906YAA
>
> VPP 12.5V
>
>
>
> Does anyone know what type of IC this is and where I can obtain one?
> I would love to install this on my IPX and connect my T805-30MHz
> Xplorer to it. Thanks
>
>
>
>
>
> Ram
>
Received on Thu Nov 30 2000 - 13:10:50 GMT