| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 7439.1 | http://pcbu.ako.dec.com/ | PCBUOA::LIBKIND | Sam Libkind - PC Support Engineering 276-9465 | Mon May 12 1997 09:33 | 4 |
| See the http://pcbu.ako.dec.com/ site for the information.
Read "Venturis 5xxx README.TXT update (text)"
Sam.
|
| 7439.2 | Doesn't look promising | OZROCK::THOMAS | Forget the Rabbit, the Duck makes the show! | Mon May 12 1997 20:42 | 20 |
| Re: .-1
>>See the http://pcbu.ako.dec.com/ site for the information.
>> Read "Venturis 5xxx README.TXT update (text)"
>>
>> Sam.
Thanks for the pointer.
Unfortunately, after reading the readme file I still don't
have a definitive answer.
The readme lists processor speeds up to 166MHz and shows jumper settings
for each. Unfortunately it refers to J25 and J35, which aren't mentioned
in the manual for my PC, and I couldn't find them on the board.
The jumper settings for the jumpers I do have don't match what's in my
manual for the lower speeds (75-100MHz).
Looks like the readme doesn't cover PCs as old as mine. ;^(
Is there an archive of readme files for the old PCs?
|
| 7439.3 | 575 | NNTPD::"[email protected]" | Alfred Wilms | Tue May 13 1997 07:50 | 13 |
| I'm not technical but this is what I understood from one of our support
people:
Seems to me that you have the Venturis Classic
Open the box and you should see a sticker with board partnumber
54-24012-01.
To my knowledge, you can upgrade to a 133MHZ; to this
J21, J22, J27 should be jumpered.
I'm not sure you can use the 120MHZ as the 575 has a different CPU/Heatsink.
[Posted by WWW Notes gateway]
|
| 7439.4 | J21/J22 and J27 | PCBUOA::LIBKIND | Sam Libkind - PC Support Engineering 276-9465 | Tue May 13 1997 12:03 | 6 |
| For the 54-24012-0X MLB the 120MHZ CPU settings should be as following:
J21/J22 - ON/ON (60MHZ clock selected)
j27 ON - selects 2/1 CPU/ BUS ratio
Sam.
|
| 7439.5 | jumper settings | PCBUOA::GKELLEY | | Tue May 13 1997 12:34 | 21 |
| 66Mhz Clock
J21 - on
J22 - on
60 Mhz Clock
J21 - on
J22 - off
50 Mhz Clock
J21 - off
J22 - off
For 120Mhz Pentium, set for 60Mhz Clock and multiplier to 2x (J27 - on)
J27 - on = 2x
J27 - off = 1.5x
glen kelley
|
| 7439.6 | really ? | NNTPD::"[email protected]" | | Tue May 13 1997 12:37 | 8 |
| re : -1
J21/J22 - ON/ON (60MHZ clock selected)
really ?
My doc says J21 Jumpered; J22 Open
[Posted by WWW Notes gateway]
|
| 7439.7 | 7439.5 is correct | PCBUOA::GKELLEY | | Wed May 14 1997 16:00 | 1 |
| Note 7439.5 is the correct jumpering
|
| 7439.8 | 133MHZ | NNTPD::"[email protected]" | | Thu May 15 1997 06:28 | 5 |
| AHA; so what are the settings for a 133MHZ ?
(expecting the chip to upgrade my 575 classic next week)
thks
Alfred
[Posted by WWW Notes gateway]
|
| 7439.9 | re: .8 | PCBUOA::LIBKIND | Sam Libkind - PC Support Engineering 276-9465 | Thu May 15 1997 11:16 | 9 |
| Re: .8
>AHA; so what are the settings for a 133MHZ ?
Consider this 133/2 is ~66
Select 66MHZ bus (J21-on; J22-on)
Aslo select J27 - on (2x), i.e. 66MHZ * 2 = ~133MHZ.
Right Glen?
Sam.
|
| 7439.10 | 133 settins | PCBUOA::GKELLEY | | Fri May 16 1997 13:45 | 3 |
| All jumpers on for 133Mhz.
glen
|
| 7439.11 | What about the voltage regulator? | OZROCK::THOMAS | Forget the Rabbit, the Duck makes the show! | Mon May 19 1997 21:01 | 14 |
| OK, so the answer to my orginal questions is that it can be
upgraded to 120MHz, or even to 133Mhz.
The next question is.... do I need a different voltage regulator?
The manual says that for some CPU upgrades, a new voltage regulator
may be required. Of course it doesn't say which ones, it just
says that the new regulator will be included in the Digital CPU
upgrade kit if it is required.
So, which upgrades require a different voltage regulator - is it
any that require J27 ON?
Hugh.
|
| 7439.12 | Uses the same regulator | PCBUOA::GKELLEY | | Tue May 20 1997 11:36 | 7 |
| It uses the same regulator. This is for "Standard" chip version - there
will be an "S" on the both of the chip.
Just make sure that you increase the cooling for the new CPU (either a
cpu fan or something similar).
glen
|
| 7439.13 | 120MHz works fine.... 133MHz inconclusive | OZROCK::THOMAS | Forget the Rabbit, the Duck makes the show! | Mon May 26 1997 00:01 | 18 |
| Thanks for you help.
I borrowed a 120MHz Pentium chip over the weekend and tried out
the jumper settings recommended. The boot messages said it was
running at 120MHz, and it booted and ran OK.
I then tried setting the jumpers to 133MHz, expecting that it
would try run at 133MHz but would fail. What I found was that
it still reported that it was running at 120MHz, but Windows95
failed to boot. So I'm not sure if it was really running at 133
(despite what the boot messages said) but failed because the
chip's not reated that high, or whether it failed because that
jumper combination is unsupported.
Looks like I'll have to find a 133MHz chip to borrow to try it
out. ;^)
|
| 7439.14 | Whose 133 chip? | PCBUOA::GKELLEY | | Wed May 28 1997 12:28 | 4 |
| What "133" chip do you have? Get the numbers from the chip and post
them. Its possible that you may have a gray market relabled chip.
glen
|
| 7439.15 | 133MHz works | OZROCK::THOMAS | Forget the Rabbit, the Duck makes the show! | Tue Jun 03 1997 00:40 | 17 |
| >>What "133" chip do you have? Get the numbers from the chip and post
>>them. Its possible that you may have a gray market relabled chip.
>>
>>glen
I was using a 120MHz chip, and trying to clock it at 133. I wasn't surprised
that it didn't work, but I expected the boot messages to indicate that it
was running at 133MHz.
Since then I have managed to get hold of a 133MHz chip and tried it out.
It successfully booted and as far as I can tell it was running at ~133MHz
(the Quake installation utility said it was a 127MHz Pentium ;^)).
The boot messages, however, still said that it was running at 120MHz.
Maybe if I update the BIOS, it will correctly report 133MHz.
Hugh.
|
| 7439.16 | | QUARK::LIONEL | Free advice is worth every cent | Tue Jun 03 1997 09:37 | 7 |
| The boot message simply reads a type code from the "ROM" of the CPU chip - it
doesn't "test" the speed. The BIOS then looks up in a table of known values
to determine the appropriate display value. Older BIOSes may not have
entries for faster speeds, which is why my Celebris 590 with a 166 chip
calls itself a "5120".
Steve
|