Tyan S1832DL (Tiger 100)

Don't ask how to over-clock.
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

Hi - problem

The above mobo is Intel BX/GX

Installed 512MB PC100 ECC Unbuff SDRAM (2 x 256 Double Sided DIMMs)
The last and latest BIOS v2.00.05 allows PIII up to 850Mhz (per Tyan)
Updated BIOS to v2.00.05.
Used a PIII Coppermine SL5QV 1000/256/100 on a slocket in CPU1.
The slocket is card type 370SPD. Cpu blank in CPU2.

BIOS reports Pentium III 1000Mhz but...
Board posts with microcode error.
Patched BIOS with 0686 microcode by way of CTMC - solved error.

With CPU1 populated as above and CPU2 a cpu blank -
the mobo will post and loads NT4 server where CPU is recognised
by NT4 Diags correctly.

No issues.

Install an identical SL5QV on an identical slocket - both known good
into CPU2 - removed cpu blank.

The mobo fails to POST and sits at reset. Voltage issue?
Used a POST Code diag board - reads 00 00.

Interestingly with a PIII SL3JM 600/512/100 2.05V in CPU2 will
POST but reports Pentium III 1000Mhz only.

With a PIII SL3XP 750/256/100 1.65V in CPU2 will
Power On but sit at RESET?!?

Any help?
Denniss
BIOS Guru
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Location: Near Hannover (CEBIT) Germany
Contact:

Does the second SL5QV if it is used to replace the known working first one ? (please try as it was installed in CPU2 with the second Slocket)

I'm not that expert in dual-PIII but the Slockets might need to set an additional jumper to be used for dual-CPU operations.
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

Deniss,

Vielen Dank

Yep,

I have physically swapped out the first SL5QV established to
work on its own with a CPU terminator in CPU2 and
placed in CPU1, the second SL5QV with exactly the same
slocket configuration.

The system will boot to NT 4.0 Server SP6 as installed on this system.
I should add when I installed NT4 - I did so with 2 Katmai 600Mhz
and the MPS v1.4 HAL was installed.

This is not the problem - suspect is BIOS

NT4 diags reports the CPU as CPU0 x86 Family 6, Model 8,
Stepping 10 Genuine Intel ~1002 Mhz

Cocnur - you may be correct with re - slocket
Recall some of these do require configuration for dualling etc.

Will investigate - again thx
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

Hi, Just a note to add re - this issue

The mobo support an Nat Semi LM79 monitor.
Reads as follows with 1 SL5QV up in CPU1;

IN0 1.79V
IN1 2.04V
IN2 3.29V
IN3 5.08V
IN4 11.67V
IN5 -11.25V
IN6 - 5.10V
FAN1 6617 rpm

Important values are IN0 and IN1 - IN0 is Vcore but...
SL5QV is 1.7V - no problem, mobo will support only 1.8V

The slockets have 370SPD v1.0 on them as ID marks - these
are generic. I suspect these may need a mod for dual
capability and/or further mod if i wish Vcore to be compatible
with SL5QV 1.7V

1st priority - get both CPUs to boot
Any help?
edwin
The Hardware Archivist
Posts: 6286
Joined: Wed Mar 20, 2002 7:11 pm
Location: Netherlands
Contact:

370SPD v1.0 looks like jamicon/fastfame. That is about as generic as they come. Might have better luck with Powerleap thingies.
edwin/evasive

Do not assume anything

System error, strike any user to continue...
cp
BIOS Guru
Posts: 1914
Joined: Mon Oct 21, 2002 9:07 pm
Location: Germany

http://www.hardware-one.com/reviews/dua ... 70-4.shtml

AN15 to B75 for old Celerons and AN15 and X2 to B75 for CuMine Celerons. That's BR1# if you want to take a look at the intel datasheets.

The issue with the VCore is very common. There's no way to go below 1.8V because the voltage regulator on the mainboard doesn't support this. As you might know the voltage is defined by VIDx pins on the cpu. Intel updated their specs on the voltage requirements but some manufacturers still took the outdated switching regulators (they maybe never intended that someone would even try to use those new processors on those boards) or the boards were produced before Intel updated their specs (most likely!). Actually there is a way to fool the regulator anyways, but i doubt that you would want to try that at home ;) So you'd better stick with the 1.8v and make sure the switching regulator is cooled nicely, too.
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

cp, thx

Yes - thought about a p.d. of 1.7V across Vss (I believe) with a resistor.
I believe I have seen this before. Is it effective?

thx for the note
cp
BIOS Guru
Posts: 1914
Joined: Mon Oct 21, 2002 9:07 pm
Location: Germany

hmmm.. you might remember those vcore mods where they connect the error amplifier to gnd via a resistor. (http://www.ocworkbench.com/hardware/eli ... amodp2.htm for reference. and http://www.revistapcecia.com.br/downloa ... A7500B.pdf for pin description). this also works the other way around: connect the error amplifier to Vcc via a resistor and the voltage will drop. but keep in mind that those regulators were not build to handle such low voltages. they might not be able to supply a stable voltage at that level (i would mod it anyhow ;)).
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

E,

Thx. Yes - I appreciate this.

Have found lots of articles on Taulatin mods but not
specifcally to dual a slocket only. I have tried these slockets
in DELL 440BX - runs a 1.1GHz no problem, the Tyan S1832DL
with 1 CPU at 1GHz - so... I think it might just be to make
dual CPU work with these slockets
cp
BIOS Guru
Posts: 1914
Joined: Mon Oct 21, 2002 9:07 pm
Location: Germany

http://tipperlinne.com/slot-t.htm

i guess that's what you're looking for.

to summarize the position of BR1#:
SLOT1: B75
PPGA : AN15
FCPGA : X2
FCPGA2 : N33
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

Have checked if these generic slockets have any known provenance
as suggested by E re - Jamicon/Fastfame

Cannot find any slocket by Fastfame for a 370SPD v1.0
There are references to a Fastfame 370SPC v1.0. Intel
have tested the 370SPC but fails SSA test - hence the
requirement for mod obviously!
see http://support.intel.com/support/proces ... 007585.htm

Likewise cannot find any Jamicon 370SPD v1.0 but there
are references to a Jamicon 370SPC v1.0
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

cp,

Re - the p.d. required
I only want 0.1 drop of a volt to be reliable under heavy load
Will get a small HS from a MOSFET or similar

Re - s370 dual mod (as above) per
http://www.hardware-one.com/reviews/dua ... 70-4.shtml
finds (on this socket) pin AN15 and B75 connected!

So... will try the slot T mod instead
Thx again
cp
BIOS Guru
Posts: 1914
Joined: Mon Oct 21, 2002 9:07 pm
Location: Germany

yes...Intel moved the BR1# signal around with almost every cpu revision. on ppga celerons it was AN15, on fcpga celerons it went to X2 and on fcpga2 celerons it finally went to N33.
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

Upon further investigation, I consider this contradicts
my previous post (oops... read pinout incorrect),
I have found;

This slocket with no cpu and out of cct with a digital MM reads;

1. o/c across A15 - B75
2. 174R4 across X2 - B75 - continuity
3. o/c across N33 - B75

with a cpu in socket and out of cct (SLQ5V) reads;

1. o/c across A15 - B75
2. 22R5 across X2 - B75 - continuity
3. 56R2 across N33 - B75 - continuity

Make any sense??
JEWilson
Chip off the ol' block
Posts: 109
Joined: Wed Oct 11, 2006 12:51 am

This seems ridiculous
In fact,

with no cpu (out of cct)
A15 - B75 is 111R8
X2 - B75 o/c
N33 - B75 o/c

with cpu on socket (out of cct)
A15 - B75 is 56R2
X2 - B75 o/c
N33 - B75 o/c

Suspect I have found the correct pins! Linked X2 to B75.
With 1 SL5QV mod slocket in CPU1 with CPU terminator in CPU2.
Machine POSTs and boots as before.

With 2nd SL5QV in CPU2 with 1st SL5QV in CPU1.
No POST - system halts as reset.
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