looking for a good HP to industry std. part number list.

[Rik Bos]

In their early computer days, HP was giving every ROM a unique number, you
only could order 'firmware filled rom's' .
It's a part number for a specific component in a machine and includes the
software / firmware revision.
There is even some older HP equipment witch is able to list the installed
ROM's e.g. HP150 / HP125 /HP 262X terminals etc..
And you got a list of the numbers 1881-xxxx, different for every installed
rom because the number also represents the firmware.
Later firmware packs were numbered (they contained several roms with the
same number).
Device numbers  are mostly printed on the device, programmed devices have a
sticker with a number on it representing the device and firmware.

-Rik

PS when reading the HP-Journal article about the HP 3000/37 it says 'four
rom chips holding 128k bits each.......'
The article is on the hpmuseum.net 

> -----Oorspronkelijk bericht-----
> Van: cctalk-bounces at classiccmp.org 
> [mailto:cctalk-bounces at classiccmp.org] Namens g-wright at att.net
> Verzonden: maandag 30 maart 2009 5:32
> Aan: General Discussion: On-Topic and Off-Topic Posts
> Onderwerp: Re: looking for a good HP to industry std. part 
> number list.
> 
> 
>  
>   -------------- Original message from 
> ard at p850ug1.demon.co.uk (Tony Duell): --------------
> 
> 
> > > 
> > > 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
> > 
> 
> 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.
> 
> 
> > 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).
> > 
> > >  like to find some tech.   manuals for the same, but
> > 
> > I asusme there's nothing on hpmusuem.net.
> 
> Yes, they  have  a few owner/operator type manuals. But very 
> little in the way of  technical manuals
> > 
> > >  I'm probably dreaming again
> > 
> > -tony
> 
> Thanks, tony
> 
> - Jerry
>