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
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