| View previous topic :: View next topic |
| Author |
Message |
Lupin_the_3rd
Apprentice
Joined: 03 Apr 2005
Posts: 168
|
 Posted: Wed Jul 04, 2012 8:39 pm Post subject: dec alpha 21264A processor revisions? |
 |
|
I've got two Compaq XP1000's here, both with Gentoo on them. A `sho dev` on each of them has two different things for the CPU. Both are 667 Mhz speed and both have 4 MB of cache.
XP1000 #1: 21264A-9
XP1000 #2: 21264A-8
I have the Compaq 21264A hardware reference manual even, and I cannot find anywhere what the -8 and -9 suffix means. I assume different revision levels of the CPU??
Any ideas?
_________________
Compaq XP1000 Alpha EV67 667Mhz w/ 2GB ECC
32bit PCI: ATI Radeon 9100 (DRI works!)
32bit PCI: Generic Firewire 400 card
64bit PCI: BCM5703 Gig-E (Compaq NC7771)
64bit PCI: Sil3124 SATA w/ mdadm RAID1 (pair of WD VelociRaptors) |
|
| Back to top |
|
 |
mattst88
Developer
Joined: 28 Oct 2004
Posts: 422
|
| Posted: Thu Jul 05, 2012 9:12 pm Post subject: |
|
|
Yeah, probably different hardware revision.
_________________
My Wiki page |
|
| Back to top |
|
|
Lupin_the_3rd
Apprentice
Joined: 03 Apr 2005
Posts: 168
|
| Posted: Fri Jul 06, 2012 2:39 am Post subject: |
|
|
| mattst88 wrote: | | Yeah, probably different hardware revision. |
Do you know of any document that explains the difference? Does the -9 fix some bug or errata of the -8 chip? Is the -9 "better" in some way? I'd love to know what is the difference between the two.
FWIW the system board of the -8 chip has some wires that have been soldered on between some components, like a factory fix for some defect. The -9 system board does not have these add-on wire traces. All of the identifying numbers and markings between the two boards are identical, the serial numbers are the only other unique thing.
_________________
Compaq XP1000 Alpha EV67 667Mhz w/ 2GB ECC
32bit PCI: ATI Radeon 9100 (DRI works!)
32bit PCI: Generic Firewire 400 card
64bit PCI: BCM5703 Gig-E (Compaq NC7771)
64bit PCI: Sil3124 SATA w/ mdadm RAID1 (pair of WD VelociRaptors) |
|
| Back to top |
|
|
mattst88
Developer
Joined: 28 Oct 2004
Posts: 422
|
| Posted: Fri Jul 06, 2012 2:10 pm Post subject: |
|
|
| Lupin_the_3rd wrote: | | mattst88 wrote: | | Yeah, probably different hardware revision. |
Do you know of any document that explains the difference? Does the -9 fix some bug or errata of the -8 chip? Is the -9 "better" in some way? I'd love to know what is the difference between the two.
FWIW the system board of the -8 chip has some wires that have been soldered on between some components, like a factory fix for some defect. The -9 system board does not have these add-on wire traces. All of the identifying numbers and markings between the two boards are identical, the serial numbers are the only other unique thing. |
No, I don't. I'd be surprised if this information was publicly available.
My guess is that -9 is a newer revision and fixes something in the -8 revision, like the need for the soldered-on wires you found on the -8 CPU.
_________________
My Wiki page |
|
| Back to top |
|
|
|
Gentoo on Alternative Architectures
