DEC GTX5166M Service Quick Reference Manual page 94

Code Beeps POST Routine Description
A8 Erase F2 prompt
AA Scan for F2 key stroke
AC Enter SETUP
AE Clear in-POST flag
B0 Check for errors
B2 POST done-prepare to boot operating system
B4 One beep
B6 Check password (optional)
B8 Clear global descriptor table
BC Clear parity checkers
BE Clear screen (optional)
BF Check virus and backup reminders
C0 Try to boot with INT 19
DO Interrupt handler error
D2 Unknown interrupt error
D4 Pending interrupt error
D6 Initialize option ROM error
D8 Shutdown error
Troubleshooting
continued
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