Sun Microsystems, Inc.   Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition
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Volume I: CPU

NVRAM and EEPROM

The IDPROM on Sun-3 and Sun-4 CPU boards contains the machine-type code, serial number, and ethernet address.

The machine-type code and serial number are combined to create the hostid. Some companies use the hostid to license software to a specific machine.

The hostid command displays the serial number in hexadecimal. The label on the IDPROM is decimal. The label on the NVRAM is alpha-numeric. The serial number displayed by the Power-On Self Test (POST) is decimal.

Follow the steps in the example below to verify an IDPROM.

    The label on a Sun-3/160 IDPROM is 31774.
    The serial number displayed by the POST is #1774.
    1. Convert 1774 decimal to 006ee hexadecimal.
    2. Combine the Sun-3/160 machine-type code 11 with 006ee for a hostid of 11006ee.
    3. Use the hostid command to display the hostid of 11006ee.

               HOSTID
               ------
               1100xxxx
               ||||||||
               //\\\\\\
              //  \\\\\\
   Machine-type    Hex Serial #
    (1 byte)         (3 bytes)

-------------------------------------------------------------
SYSTEM HOSTID LABEL TYPE PART # LOCATION -------------------------------------------------------------
3/75/140/150 1100xxxx 3xxxx IDPROM 520-1221 U1409 3/160/180 1100xxxx 3xxxx IDPROM 520-1221 U1409 3/50 1200xxxx 4xxxx IDPROM 520-1295 U0204 3/260/280 1300xxxx 5xxxx IDPROM 520-1322 U1907 3/110 1400xxxx 6xxxx IDPROM 520-1412 U1409 3/60 1700xxxx 0xxxx IDPROM 520-1559 U224 3E 1800xxxx 9xxxx IDPROM 520-8049 U224 ----------------------------------------------------------
3/460/470/480 4100xxxx xxxx IDPROM 525-1083 U1701 3/80 4200xxxx NVRAM 525-1031 U0205 ----------------------------------------------------------
Sun386i 31xxxxxx xxxx IDPROM 520-1811 U601 Sun386i None None NVRAM 100-1628 U603 ----------------------------------------------------------
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