Teac fd problem, uPD77C25 data sheet/book & 30-pin SIMMs

From: Allison J Parent <allisonp_at_world.std.com>
Date: Tue Nov 17 21:07:18 1998

< The NEC uPD77C25 is some kind of DSP chip. I'm trying to find a data she
< data book for this. No luck on searching the NEC web site. Does anyone k
< where I can get this?
<

Likely you can't. It is a single chip 16 bit fixed point DSP DSP with
ROM code and the code is specified by the engineer that designed the
product it's in. The part is available as mask rom, OTP eprom and
UVeprom. A data sheet will help ypu understand the part but will tell
you little of it's programming in for whatever product it was in.

Allison
Received on Tue Nov 17 1998 - 21:07:18 GMT