System Administration Guide, Volume 1


Each SPARC based system has a PROM (programmable read-only memory) chip with a program called the monitor. The monitor controls the operation of the system before the kernel is available. When a system is turned on, the monitor runs a quick self-test procedure that checks things such as the hardware and memory on the system. If no errors are found, the system begins the automatic boot process.

SPARC only -

Some older systems might require PROM upgrades before they will work with the Solaris system software. Contact your local service provider for more information.