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- This is a short howto (get started, really) about the SparcStation PROM.
- The PROM has a FORTH interpreter in it that has oodles of functions.
- It has a set of environment variables that control things like
- your boot path and other system parameters.
-
- You can abort out of Sprite and enter the PROM, then return to Sprite
- and not loose your system. Honest. You might cause your workstation
- to recover with the file servers, but that should work. Typing:
-
- L1-a
-
- will abort to the monitor. Usually the PROM monitor prompt is:
-
- >
-
- You can type 'b', 'c', or 'n' to this prompt, to
- reboot, continue execution (i.e. return to Sprite), or enter the
- FORTH interpreter, respectively. If you type 'n', you get this prompt:
-
- ok
-
- There are a zillion commands defined by the FORTH system in the PROM.
-
- printenv
-
- will dump the environment variables.
- You will probably see that the default boot-from is "le()vmunix"
- You want to change that to "le()sun4c.md/sprite" or perhaps "le()sun4c.md/new"
- You can change it with:
-
- setenv boot-from le()sun4c.md/sprite
-
- You can now resume Sprite with the "go" command.
-
- go
-
- If you return to the PROM monitor from Sprite again, you'll go
- right into the FORTH interpreter and get the "ok " prompt in response to L1-a
-
- Type "help" and try it out.
-