Sun Microsystems SunFastEthernet Adapte User Manual page 19

1
The SunFastEthernet Adapter card is supported on most SBus based Sun-4c,
Sun-4m, and Sun-4d system architectures that run under the Solaris®
environment or other compatible operating systems.
To utilize the SunFastEthernet Adapter card, the system also needs to contain
OpenBoot™ PROM (OBP) level 2.3 or later. Verify your OBP version by typing
the banner command at the ok prompt. If the OBP version is earlier than 2.3
then the OBP must be upgraded.
An on-board FCode PROM provides configuration support that identifies the
SunFastEthernet Adapter card to the system and contains selftest routines.
Introducing the SunFastEthernet Adapter Card 1-5