1 Jun
2020
1 Jun
'20
3:15 p.m.
If it's only got 18 pins (per the subject line) then I don't think it
can be a 27S29. Based on the label my guess would have been a PAL/GAL
of some kind, but I can't immediately think of any standard parts that
would have had less than 20 pins there either...
p.
On Mon, Jun 01, 2020 at 02:55:03PM -0700, Ian Finder via cctalk wrote:
Thanks Bob- this is alongside the 27S29 parts- which
are labeled as such,
but this question is about a part labeled AM000076 (different than the
27S29 which are clearly labeled).
Are you saying they're identical?
On Mon, Jun 1, 2020 at 11:34 AM Bob Smith <bobsmithofd at gmail.com> wrote:
> 27S29
>
> Abstract: AM27S28 Am27S28/27S29
> Text: Am27S28/ 27S29 4,096-Bit (5 1 2 x 8 ) Bipolar PROM Am27S28/
> 27S29 DISTINCTIVE CHARACTERISTICS ? ? ? High Speed Highly reliable,
> ultra-fast programming Platinum-Silicide fuses High programming yield
> ? ? ? Low-current PNP inputs High-current open-collector and
> three-state outputs Fast chip select GENERAL DESCRIPTION The
> Am27S28/29 (512-words by 8-bits) is a Schottky TTL Programmable
> Read-Only Memory (PROM). This device is available in both open
> collector (Am27S28) and three-state (Am27S29) output
>
> On Sun, May 31, 2020 at 7:35 PM Ian Finder via cctalk
> <cctalk at classiccmp.org> wrote:
> >
> > Title says all,
> >
> > Backing up all the programmable parts in the Apollo DN100 and the CPU
> board
> > has a few of these ceramic DIPs with the same Apollo P/N labels as the
> > Am27S29 and similar programmable parts.
> >
> >
> > Thanks
>