p2b (rev 1.12) slot-t tualatin woes

[Allan Young]

I just picked up a pair of upgradeware slot-t adapters and a couple of
1.3GHz celerons to upgrade an asus p2b (rev. 1.12) and an aopen ax6bc.

The good news is that I've confirmed both adapters (rev 1.1) and
celerons work on the ax6bc. Unfortunately, I'm experiencing some
grief with the p2b. Perhaps someone here can offer some
suggestions?

After the slot-t is installed as soon as I provide ac to my power
supply (an enermax EG 365P-VE) the system automatically powers on,
without me having to press the pc's on switch. This is unusual since
I've always had to press the pc's on switch to fire things up. If
only the system actually came up.

There are no visual or audible signs of an attempt to post. Drive
leds and fans turn on but that's it. Thankfully there's no smoke.
Pressing the pc's power switch does not shutdown the system. Turning
off the switch on the back of the power supply does.

This is very repeatable: Complete post with the old PII 400, shut the
system down, turn off the power supply, unplug ac, remove PII 400,
install slot-t with celeron/fan, plug in ac, turn on the power supply
and the symptoms above persist.

Here are the gory details on my p2b:

The revision 1.12 p2b's old PII 400 runs fine with bios 1014 beta 3,
which I installed several months ago when I put in a larger hard
drive.

I checked p2b upgrade faq
http://homepage.hispeed.ch/rscheidegger/p2b_procupgrade_faq.html (even
prior to getting the slot-t, imagine that) and gave myself the green
light when I saw my board had a US3007CW voltage regulator.

On the p2b the jumpers for bus frequency remain set to 100MHz, the
multiplier at 4x (although I understand tualatin shouldn't care about
the multiplier). I should mention the online manual I have shows 3
bus frequency jumpers and my board has 4 (FS0 through FS2 are have
pins 1-2 shorted and FS3 has pins 2-3 shorted).

The I've confirmed the slot-t's default settings of 100MHz bus and
1.5v.

Could I be missing some required bios setting(s)?

Thanks for any help or suggestions,
Allan

 

[Paul]

I just picked up a pair of upgradeware slot-t adapters and a couple of
1.3GHz celerons to upgrade an asus p2b (rev. 1.12) and an aopen ax6bc.

The good news is that I've confirmed both adapters (rev 1.1) and
celerons work on the ax6bc. Unfortunately, I'm experiencing some
grief with the p2b. Perhaps someone here can offer some
suggestions?

After the slot-t is installed as soon as I provide ac to my power
supply (an enermax EG 365P-VE) the system automatically powers on,
without me having to press the pc's on switch. This is unusual since
I've always had to press the pc's on switch to fire things up. If
only the system actually came up.

There are no visual or audible signs of an attempt to post. Drive
leds and fans turn on but that's it. Thankfully there's no smoke.
Pressing the pc's power switch does not shutdown the system. Turning
off the switch on the back of the power supply does.

This is very repeatable: Complete post with the old PII 400, shut the
system down, turn off the power supply, unplug ac, remove PII 400,
install slot-t with celeron/fan, plug in ac, turn on the power supply
and the symptoms above persist.

Here are the gory details on my p2b:

The revision 1.12 p2b's old PII 400 runs fine with bios 1014 beta 3,
which I installed several months ago when I put in a larger hard
drive.

I checked p2b upgrade faq
http://homepage.hispeed.ch/rscheidegger/p2b_procupgrade_faq.html (even
prior to getting the slot-t, imagine that) and gave myself the green
light when I saw my board had a US3007CW voltage regulator.

On the p2b the jumpers for bus frequency remain set to 100MHz, the
multiplier at 4x (although I understand tualatin shouldn't care about
the multiplier). I should mention the online manual I have shows 3
bus frequency jumpers and my board has 4 (FS0 through FS2 are have
pins 1-2 shorted and FS3 has pins 2-3 shorted).

The I've confirmed the slot-t's default settings of 100MHz bus and
1.5v.

Could I be missing some required bios setting(s)?

Thanks for any help or suggestions,
Allan

From this thread, experiences seem to be mixed.

http://groups.google.com/groups?hl=...ub%24ek4%2407%[email protected]&lr=&hl=en

Your symptoms are really puzzling... The only time my system did
that (turn on without pressing the case front button), was when one
of my IDE cables was only half inserted. I cannot imagine how the
processor affects the PS_ON# driving circuit, especially as the
processor shouldn't be getting any current when the computer is
off. Certainly +5VSB will be working, but I don't see the connection
between the choice of processor, and what happens to PS_ON#.

Try the FSB switches at 66MHz?

Paul

 

[Ed Edelenbos]

From this thread, experiences seem to be mixed.

http://groups.google.com/groups?hl=...ub%24ek4%2407%[email protected]&lr=&hl=en

Your symptoms are really puzzling... The only time my system did
that (turn on without pressing the case front button), was when one
of my IDE cables was only half inserted. I cannot imagine how the
processor affects the PS_ON# driving circuit, especially as the
processor shouldn't be getting any current when the computer is
off. Certainly +5VSB will be working, but I don't see the connection
between the choice of processor, and what happens to PS_ON#.

Try the FSB switches at 66MHz?

Paul

My P2B-N has always (from day 1) powered on for a few seconds when the
power cable is inserted. My guess is that it does so long enough to see
if "AC PWR loss restart" is set in the bios. When I tried to put in a 1
Ghz. celeron (133fsb) it does the same as Allan's. All of the fans come
on (and stay on) but no beeps, no video, etc.

Ed

(The 133 cpu is a long story, I'm sure it works and I have it but the
machine it was in went up. I expected (or hoped) it to come up as a 750.)

 

[Stephan Grossklass]

When I tried to put in a 1
Ghz. celeron (133fsb)

Strange PIII-to-Celeron metamorphosis?

it does the same as Allan's. All of the fans come
on (and stay on) but no beeps, no video, etc.

Ed

(The 133 cpu is a long story, I'm sure it works and I have it but the
machine it was in went up. I expected (or hoped) it to come up as a 750.)

Which slot adapter were you using again? Make sure it's jumpered
correctly; Coppermine, automatic voltage and 100 MHz (or auto).

Stephan

 

[Ed Edelenbos]

Strange PIII-to-Celeron metamorphosis?

D'oh (in my best Homer Simpson voice)... PIII 1 Ghz (not Celeron).

Which slot adapter were you using again? Make sure it's jumpered
correctly; Coppermine, automatic voltage and 100 MHz (or auto).

Stephan

All jumpers set... unk. manufacturer... 370SPC CPU Card.

 

[Stephan Grossklass]

All jumpers set... unk. manufacturer... 370SPC CPU Card.

A-ha.

http://support.intel.com/support/processors/pentiumiii/sb/CS-007585.htm
| Table 2. Slot-to-Socket Adapters That DO NOT Meet Minimum Functional
| and Voltage Requirements of the Pentium® III Processor in the FC-PGA
| Package
[...]
| Fastfame 370SPC
| (rev 1.0)

There you got it, the thing is not really Coppermine compatible. You
should try a known-good adapter, Table 1 on the page mentioned above
gives some hints (be aware it's somewhat older and only lists the
S370-133 and not the S370-DL, for example).

Stephan

 

[Stephan Grossklass]

I just picked up a pair of upgradeware slot-t adapters and a couple of
1.3GHz celerons to upgrade an asus p2b (rev. 1.12) and an aopen ax6bc.

The good news is that I've confirmed both adapters (rev 1.1) and
celerons work on the ax6bc. Unfortunately, I'm experiencing some
grief with the p2b. Perhaps someone here can offer some
suggestions?
[snip]
The revision 1.12 p2b's old PII 400 runs fine with bios 1014 beta 3,

Well, IMHO you haven't done anything obviously wrong. It *should* work.

On the p2b the jumpers for bus frequency remain set to 100MHz, the
multiplier at 4x (although I understand tualatin shouldn't care about
the multiplier). I should mention the online manual I have shows 3
bus frequency jumpers and my board has 4 (FS0 through FS2 are have
pins 1-2 shorted and FS3 has pins 2-3 shorted).

You can find newer manual versions at

The I've confirmed the slot-t's default settings of 100MHz bus and
1.5v.

Are these the default settings? Should be OK then.

Could I be missing some required bios setting(s)?

No, don't think so. You've certainly confirmed that the P2B really shows
the BIOS version 1014.003 with the PII and that the Slot-T was firmly
seated? I guess you don't have any CuMines at hand?

Stephan

 

[Ed Edelenbos]

Thanks Stephan. Are you trying to tell me "you get what you pay for"?
(grin)

Ed

All jumpers set... unk. manufacturer... 370SPC CPU Card.

A-ha.

http://support.intel.com/support/processors/pentiumiii/sb/CS-007585.htm
| Table 2. Slot-to-Socket Adapters That DO NOT Meet Minimum Functional
| and Voltage Requirements of the Pentium® III Processor in the FC-PGA
| Package
[...]
| Fastfame 370SPC
| (rev 1.0)

There you got it, the thing is not really Coppermine compatible. You
should try a known-good adapter, Table 1 on the page mentioned above
gives some hints (be aware it's somewhat older and only lists the
S370-133 and not the S370-DL, for example).

Stephan

 

[Stephan Grossklass]

Thanks Stephan. Are you trying to tell me "you get what you pay for"?
(grin)

Actually, there are some newer el-cheapo adapters which will run CuMines
just fine. (Some "SuperSlocket III" - ? - comes to mind.)

Stephan

 

[P2B]

I just picked up a pair of upgradeware slot-t adapters and a couple of
1.3GHz celerons to upgrade an asus p2b (rev. 1.12) and an aopen ax6bc.

The good news is that I've confirmed both adapters (rev 1.1) and
celerons work on the ax6bc. Unfortunately, I'm experiencing some
grief with the p2b. Perhaps someone here can offer some
suggestions?

After the slot-t is installed as soon as I provide ac to my power
supply (an enermax EG 365P-VE) the system automatically powers on,
without me having to press the pc's on switch. This is unusual since
I've always had to press the pc's on switch to fire things up. If
only the system actually came up.

There are no visual or audible signs of an attempt to post. Drive
leds and fans turn on but that's it. Thankfully there's no smoke.
Pressing the pc's power switch does not shutdown the system. Turning
off the switch on the back of the power supply does.

This is very repeatable: Complete post with the old PII 400, shut the
system down, turn off the power supply, unplug ac, remove PII 400,
install slot-t with celeron/fan, plug in ac, turn on the power supply
and the symptoms above persist.

Here are the gory details on my p2b:

The revision 1.12 p2b's old PII 400 runs fine with bios 1014 beta 3,
which I installed several months ago when I put in a larger hard
drive.

I checked p2b upgrade faq
http://homepage.hispeed.ch/rscheidegger/p2b_procupgrade_faq.html (even
prior to getting the slot-t, imagine that) and gave myself the green
light when I saw my board had a US3007CW voltage regulator.

On the p2b the jumpers for bus frequency remain set to 100MHz, the
multiplier at 4x (although I understand tualatin shouldn't care about
the multiplier). I should mention the online manual I have shows 3
bus frequency jumpers and my board has 4 (FS0 through FS2 are have
pins 1-2 shorted and FS3 has pins 2-3 shorted).

The I've confirmed the slot-t's default settings of 100MHz bus and
1.5v.

Could I be missing some required bios setting(s)?

Thanks for any help or suggestions,
Allan

As Stephan said, you seem to have covered the bases and it really
*should* work! I hope Upgradeware haven't changed the Slot-T such that
it no longer works on a P2B - yours is the first mention I've seen of a
Rev. 1.1 Slot-T, all the ones I've used were Rev. 1.0

As you noted, a P2B should not automatically power up when you turn on
the power supply. This usually indicates a CPU seating problem, possibly
you should try temporarily removing the CPU retention mechanism to see
if that makes a difference.

P2B

 

[Allan Young]

Hurray!

I've got my slot-t + 1.3GHz Celeron up and running on my rev 1.12 p2b.
I basically stripped my system completely apart and reconnected all
cables (power and ribbon). Now it comes up fine. The bios shows the
expected 1.5 volts for vcore.

paul> The only time my system did that (turn on without pressing the
paul> case front button), was when one of my IDE cables was only half
paul> inserted.

Hmm, perhaps I may have had a marginal electrical connection with my
ide cable and switching to the slot-t/Celeron was enough of a change
(ps electrical load?) to cause the fault to occur. Now that I've
disconnected and reconnected all the cables it appears I'm up and
running.

BTW Thanks to Stephan G. for the pointer to more up to date manuals:
<ftp://ftp.asuscom.de/pub/ASUSCOM/HANDBUCH/Motherboard/>

Also, to follow up on the other information Paul pointed to:

http://groups.google.com/groups?hl=...ub%24ek4%2407%[email protected]&lr=&hl=en
(or tinyurl http://tinyurl.com/2qogq )

The above thread mentions problems someone had with a rev. 1.12 p2b
that happened to have a UC3007CW voltage regulator (UC not US). I
double checked and I do have the US3007CW which is blessed on the p2b
upgrade faq for supporting the lower voltages.
(http://homepage.hispeed.ch/rscheidegger/p2b_procupgrade_faq.html).

In short it appears that a p2b rev 1.12 with a US3007CW voltage
regulator is indeed happy with a slot-t rev 1.1 and 1.3GHz Celeron.
It's also apparent that I should have first tried the new cpu with a
minimal system, only memory and a video card installed.

Thanks to all that replied, your help was very much appreciated.

Later,
Allan