29 Mar
2009
29 Mar
'09
8:31 p.m.
-------------- Original message from ard at p850ug1.demon.co.uk (Tony Duell):
--------------
For someone that is following this. The 1881-3449 is the device
number, not a part number with the data as far as I can tell. Each
of the Eproms has its own sticker and number on it. So instead of
x27xxA printed on the chip, they have 1881-3449.
Thanks, tony
- Jerry
I'm been working on a HP 3000-37 and I can't
find a list that gives the ROM size or industry std.
numbering for the ROMs.
These have the HP # 1818-3449. I would also
Good luck!. I'v eyet to see any HP equivalents
list that contains the
generic numbers for 'programmed' parts (except in a few cases). I guess
the argument is that you have to uy programmed bits from HP in order to
get the program.
How many pins do these ROMs have?
I have to Add these are Eproms, ADM logo and 28 pins with a date of
86-12. I would guess at 265 type since they hold the micro code for the
system. there is 4 of them.
I've found that HP were fond of a 24 pin 8K*8 masked ROM with the same
pinout as the 2364A (I can give you that one if you need it).
Yes, they have a few owner/operator type manuals. But very
little in the way of technical manuals
like to find some tech. manuals for the same,
but
I asusme there's nothing on hpmusuem.net. I'm probably dreaming again
-tony