ULTRA SPARC 1 Boot Change Procedure

For XVideo, PowerVideo, and MultiVideo Cards

Here are the instructions for changing the eeprom in the UltraSPARC 1 to allow the system to boot from our frame buffer instead of the on-board frame buffer.

Please be EXTREMELY careful - you can render the system useless if you type the wrong thing!!

1. Perform your usual system shut-down procedures. At the system monitor prompt (>), press n for new. You should now be at the OpenBoot monitor prompt (ok).

2. Suppose that you have a PowerVideo card in the top SBus slot of the Ultra you want to use as the console instead of the Creator. From the OpenBoot monitor show the sbus devices.
   
   ok show-sbus
   
   Look at the list of devices and make sure you really have the PowerVideo board in SBus Slot 1. prompt (ok).

3. Find the device name needed for the PowerVideo board.
   
   ok cd /sbus@1f,0
   ok ls
   
   The device name should be similar to the following:
   
   PGI,tvtwo@1,0
   prompt (ok).

4. Create the devalias in the NVRAM and set use-nvramrc? to be true: (BE SURE TO USE THE DEVICE NAME RETURNED TO YOU IN STEP 3)
   
   ok nvalias my-screen /sbus@1f,0/PGI,tvtwo@1,0
   ok setenv use-nvramrc? true
   prompt (ok).

5. Change the output-device to the my-screen alias:
   
   ok setenv output-device my-screen
   prompt (ok).
   

6. Perform a reset, and the output will go to the PowerVideo board in the upper SBus slot:
   
   ok reset

   ---

   IMPORTANT

   If you ever want to delete the devalias my-screen, you can jump into the OpenBoot monitor and:

   ok nvunalias my-screen
   ok set-default output-device

   which will restore output-device to its default, screen.

   
   

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