Unidentified chip -- Spoiler for HP 1260-0339

geneb geneb at deltasoft.com
Thu Aug 6 14:17:58 CDT 2015

On Thu, 6 Aug 2015, Eric Smith wrote:

> On Thu, Aug 6, 2015 at 10:22 AM, tony duell <ard at p850ug1.demon.co.uk> wrote:
>> Amazingly there is nothing inside that 16pin DIL package. No silicon chip, no thick-film resistor
>> network, nothing. It is just a package with the pins.
> Are you sure? They might have gotten a really good deal on
> house-marked Signetics 25120 chips, with not all of the address lines
> bonded out.

It could also be a chip used to test an auto-insertion machine or wave 
solder machine.  If memory serves, they'll use correctly pinned but "fake" 
parts to test those processes before moving to the more expensive real 


Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.diy-cockpits.org/coll - Go Collimated or Go Home.
Some people collect things for a hobby.  Geeks collect hobbies.

ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://scarlet.deltasoft.com - Get it _today_!

More information about the cctech mailing list