To help with your troubleshooting, you need to determine the version of the OBP. Which two commands will provide you with this information?

B: banner Displays power-on banner. The PROM displays the system banner. The following example shows a SPARCstation 2 banner. The banner for your SPARC system may be different. SPARCstation 2, Type 4 Keyboard ROM Rev. 2.0, 16MB memory installed, Serial # 289 Ethernet address 8:0:20:d:e2:7b, Host ID: 55000121 C: .version Displays version and date of the boot PROM.
Note: OBP-OpenBootProm is a firmware which is placed on the sun machine's prom chip. It is a os independent user interface to deal with the sun machine's hardware components. The user interface provides one or more commands to display system information.