Compaq AlphaServer 1200 User Manual page 138

console
The console terminal can be either a graphics monitor or a serial terminal. The
console environment variable specifies which is used. The syntax is:
set console output_device
The options for output_device are:
graphics The console terminal is a graphics monitor or a device connected to the
(default) VGA or TGA module.
serial The console terminal is the device connected to the COM1 port.
Whenever you change the value of console, you must reset the system by pressing
the Reset button or issuing the initialize command.
cpu_enabled
Sets a bit mask that enables or disables specific CPUs on a multiprocessor system.
Disabled CPUs are prevented from running the console or the operating system. Bit
0 of the mask corresponds to CPU 0, and bit 1 to CPU 1. A zero in the bit mask
prevents the corresponding CPU from running; a one allows it to run. The bit mask
is expressed as a hexadecimal value.
NOTE: The primary CPU cannot be disabled.
The syntax is:
set cpu_enabled hex_digit
The options for hex_digit are 0 – 3 (hexadecimal).
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