which bios chips are used in these motherboards?

On Fri, 18 May 2007 19:13:20 GMT, Nicolas Noiseux <nnoiseux.DeleteThis@tiac.net>
put finger to keyboard and composed:

>I received some motherboards without bios chips on them.
>Are they dead without them?
>Which bios chip is used in a supermicro p4dl6 mb?
>Which bios chip is used in a supermicro p4dp6 mb?
>Thanks in advance.

Measure the voltage at the corner pin. It should be either +5V or
3.3V.

The following pages suggest that the BIOS chip is a 4Mbit Flash
EEPROM:

http://www.supermicro.com/products/motherboard/Xeon/GC-LE/P4DL6.cfm
http://www.supermicro.com/products/motherboard/Xeon/E7500/P4DP6.cfm

Once you have the voltage, capacity and package style, then it
shouldn't be too hard to find a compatible part.

For example, the flash utility, phlash.exe, has a list of supported
parts which can be displayed by typing ...

phlash /dev

Look for those chips with a "part size" of 512.

These are what I managed to find:

L I S T O F S U P P O R T E D F L A S H D E V I C E S

MfgID PartID Algorithm Part Size Part Name

----- ------ --------- --------- -------------------

01h 77h 10 512 AMD 29F004BXT
01h 23h 15 512 AMD 29F400
01h d6h 15 512 AMD 29F800
01h b5h 2 512 AMD 29LV004
01h 4fh 2 512 AMD 29LV040B
01h a4h 2 512 AMD/TI-TMS 29F040
37h 86h 2 512 AMIC A29040
1fh a4h 8 512 ATMEL 29C040A
1fh c4h 8 512 ATMEL 29LV040A
1fh 13h 13 512 ATMEL 49F040
1fh 12h 13 512 ATMEL 49F040T
adh 40h 2 512 BMI BM29F040
dch 04h 2 512 BMI BM29FS040
7fh 7fh 2 512 EoN EN29F040
04h a4h 2 512 Fujitsu MBM29F040C
04h 23h 15 512 Fujitsu MBM29F400T
adh a4h 2 512 HYUNDAI HY29F040AC
89h d4h 4 512 Intel 28F004 B3
89h 79h 4 512 Intel 28F004 BX-B
89h 78h 4 512 Intel 28F004 BX-T
89h 64h 16 512 Intel 28F400 B3
89h 71h 4 512 Intel 28F400 BX-B
89h 70h 21 512 Intel 28F400 BX-T
89h 9ch 4 512 Intel 28F800 B5
89h adh 4 512 Intel FWH4
40h 03h 22 512 Mosel V29C51004T
c2h 45h 2 512 MX 29F004
c2h a4h 2 512 MX 29F040
20h e2h 2 512 SGS M29F040B
20h d5h 9 512 SGS M29F400T
bfh 04h 19 512 SST 28LF040
bfh 04h 6 512 SST 28SF040/28VF040A
bfh 77h 20 512 SST 39SF040P
bfh d7h 13 512 SST 39VF040
bfh 58h 20 512 SST 49LF004
bfh 60h 20 512 SST 49LF004A
40h 03h 22 512 Syncmos F29C51004T
dah 46h 8 512 Winbond W29C040

- Franc Zabkar
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