VOGONS


First post, by Kahenraz

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A motherboard I bought came with what appeared to be a bent pin. I tapped on it gently and with the lightest of touch it lifted away from the processor base. I hadn't even attempt to straighten it yet; it may not have been fully attached. I didn't want to risk the pin coming off unexpectedly and falling into a slot slot or elsewhere so I removed it completely.

According to Intel's datasheet for this processor, this is pin A35 (PRDY#). Does anyone know if the processor can function without this pin?

Here is a link to the datasheet:

https://www.intel.com/content/dam/support/us/ … sb/29859604.pdf

I haven't tried using this chip yet because the board of my test bench isn't working. I also wanted to share the photos. 😀

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Reply 1 of 8, by Kahenraz

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I can at a minimum confirm that the board will POST and display BIOS options with this pin missing. There are other problems with this board that are preventing me from doing any further testing at the moment.

I also found that there is something wrong with the socket. The CPU I use for testing which has never had a bent pin was damaged in the same area as the other processor.

I'm not happy.

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Reply 2 of 8, by Kahenraz

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I popped the top off of the socket. It's busted. Someone must have not inserted the processor correctly and crushed the ZIF socket pin by clamping a heatsink on top of it.

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Here is a comparison of the damaged part of the socket with pins from an undamaged part.

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Last edited by Kahenraz on 2021-12-09, 12:46. Edited 3 times in total.

Reply 3 of 8, by Tiido

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!PRDY pin shouldn't be necessary for normal operation, it relates to debugging hardware functionality which I don't think any normal motherboard has.

T-04YBSC, a new YMF71x based sound card & Official VOGONS thread about it
Newly made 4MB 60ns 30pin SIMMs ~
mida sa loed ? nagunii aru ei saa 😜

Reply 4 of 8, by Kahenraz

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After confirming that the board would power up with a processor missing this pin I pulled out the bent over bits inside the slot and reassembled the socket. This was necessary to prevent damaging any more processors in the future.

Now it won't power on at all. It tries to start but then shuts off immediately like there is a short or possibly a poor connection from one of the other pins.

It looks like I'll have to try replacing whole socket.

Edit:

I reseated the CPU and now it boots. I'm guessing it's a poor connection on another pin.

Last edited by Kahenraz on 2021-12-09, 13:10. Edited 1 time in total.

Reply 5 of 8, by Gustl

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RTTCTR S35 ist ein Eingangssignal für die Kontrolle der korrekten AGTL+ Bus Terminierung. Die Pentium3 CPU sampled diesen Eingang, um festzustellen, ob die spezifiziert Terminierung gegeben ist. Der SLEWCTRL Eingang pin E27 der Pentium3 CPU erledigt eine entsprechende Überprüfung der Flankensteilheit der AGTL+ Signale, wenn die CPU einen Bus Agent treibt.

----- GOOGLE TRANSLATE -----

RTTCTR S35 is an input signal for checking the correct AGTL + bus termination. The Pentium3 CPU samples this input to determine whether the specified termination is given. The SLEWCTRL input pin E27 of the Pentium3 CPU performs a corresponding check of the edge steepness of the AGTL + signals when the CPU is driving a bus agent.

Last edited by Stiletto on 2021-12-10, 05:16. Edited 2 times in total.

Reply 6 of 8, by Gustl

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Hab natürlich die falsche Zeile gezählt also alles zurück

----- GOOGLE TRANSLATE -----

Of course I counted the wrong line so everything back

Last edited by Stiletto on 2021-12-10, 05:17. Edited 1 time in total.

Reply 7 of 8, by Gustl

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A35 Müsste intern D 60 sein was zu einem Boundary Scanner Pfad des Pentium gehört.
Das ID Code Register speichert im Pentium eine 32 Bit Identifizierung .
Diese ständige Prüfung ist transparent. Nur wenn die Fehlererfassungslogik
einen Paritätsfehler erfasst, gibt der Pentium ein aktives Signal ab.
Dann tritt der Pentium in den Shutdown Zustand ein.

----- GOOGLE TRANSLATE -----

A35 Should be internal D 60 which belongs to a Boundary Scanner path of the Pentium.
The ID code register stores a 32-bit identification in the Pentium.
This constant check is transparent. Only if the error detection logic
detects a parity error, the Pentium sends an active signal.
Then the Pentium enters the shutdown state.

Reply 8 of 8, by Stiletto

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Gustl wrote on 2021-12-09, 10:35:

RTTCTR S35 ist ein Eingangssignal...

I didn't think I needed to say this, but English is the native language for this forum. Please try to write in English, as all forum moderators and administrators do speak it, and most do not understand German.

If you need translation help, you can always try to use Google Translate - https://translate.google.com .

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