User`s manual

4.4 Flash ROM (System ROM)
Changing TOY RAM Location 3F—Debug Monitor bootopt Command
Use the debug monitor bootopt command to change the value in location 3F.
In the example shown here, the bootopt command is used to change the value
in location 3F from 0 to 1:
AlphaPC64> bootopt
1
Predefined bootoptions are...
"0" "Alpha Evaluation Board Debug Monitor" "DBM"
"1" "The Windows NT Operating System" "NT"
"2" "OpenVMS" "VMS"
"3" "Digital UNIX" "UNIX"
O/S type selected: "Alpha Evaluation Board Debug Monitor"
....Firmware type: "DBM Firmware"
AlphaPC64> bootopt nt
2
O/S type selected: "The Windows NT Operating System"
....Firmware type: "Windows NT Firmware"
AlphaPC64> bootopt
3
Predefined bootoptions are...
"0" "Alpha Evaluation Board Debug Monitor" "DBM"
"1" "The Windows NT Operating System" "NT"
"2" "OpenVMS" "VMS"
"3" "Digital UNIX" "UNIX"
O/S type selected: "The Windows NT Operating System"
....Firmware type: "Windows NT Firmware"
AlphaPC64>
1
Use the debug monitor bootopt command to see the image choices and note
which image is selected.
2
Use the debug monitor bootopt nt command to change the selected image
from0to1.
3
Use the debug monitor bootopt command to verify that the selected image
has changed from 0 to 1.
Functional Elements 4–13