HP 300

Message
5E
58
52
4C
46
40
3A
34
2E
28
22
1C
16
10
OA
04
FE
F8
F2
EC
E6
EO
Table 5-3b, Boot ROM Unexpected Failure Messages
Message: UNEXPECTED USE OF FFFFFFhh
What Unexpected Event Occurred
Trap 9
A
B
C
D
E
F
Pseudo vector 1 RESET from key board
Pseudo vector 2 Keyboard timeout (fast handshake)
Pseudo vector 3 Battery backup interrupt
Pseudo vector 4 Non-Maskable Interrupt from backplane
Spurious
interrupt
Vectored interrupt 0
1
2
3
4
5
6
7
Format Error, coprocessor violation, or unknown
MC68881 Coprocessor exception vectors
114 Troubleshooting
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