| View previous topic :: View next topic |
| Author |
Message |
CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
|
 Posted: Sat Dec 29, 2007 8:19 pm Post subject: Mystery i960 |
 |
|
Just got a HP Laaserjet 4L for cheap ($2) at a thrift store.
Took it apart to get the CPU lol
its a custom marked HP chip, but the web says the printer has a 18.5MHz i960
Date codes are all early 1993
This isnt a normal speed at all.
a 31.3MHz Crystal is connected to the CPU
its a 160 pin QFP
the CA, CF, HA, HD, and HT i960's all came in a 168 pin package, so I would guess its one of them.
Any other clues?
_________________
New for 2025! The CPU Shack has a co-processor!
Visit The CPU Shack of microprocessor history and information. |
|
| Back to top |
|
 |
CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
|
|
| Back to top |
|
|
CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
|
|
| Back to top |
|
|
CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
|
|
| Back to top |
|
|
hugo929
Joined: 27 Oct 2006
Posts: 6163
Location: China
|
|
| Back to top |
|
|
CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
|
|
| Back to top |
|
|
Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
|
| Posted: Sun Dec 30, 2007 3:45 am Post subject: |
|
|
From HP service manual:
| Code: | CPU
The Formatter PCA incorporates the following microprocessors:
LaserJet 4L - Motorola 68000, 16 MHz.
LaserJet 4ML - Intel 80960KA, 18.5 MHz.
LaserJet 4P - Intel 80960SA, 16 MHz.
LaserJet 4MP - Intel 80960KA, 18.5 MHz, 32K instruction cache. |
|
|
| Back to top |
|
|
doccybrown
Joined: 03 Oct 2005
Posts: 1736
Location: Germany
|
| Posted: Sun Dec 30, 2007 11:04 am Post subject: |
|
|
My presumption is that the original processor-card
in your LaserJet 4L was exchanged by another card.
Looks like a newer and faster board and
HP-ASIC with integreated 68k or i960-core (likely) or
even a HP-brewed core.... P/N of that board?
_________________
Ordem e Progresso |
|
| Back to top |
|
|
CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
|
|
| Back to top |
|
|
|
![[ Hidden ]](https://cdn.cpu-world.com/forum/templates/CPUWorld/images/lang_english/icon_email.gif "[ Hidden ]"){kind=icon}