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