Boot Rom Self-Tests - HP 9000 Series 360 Service Handbook

In the above example, FFB is 1111111110(01) in binary. A RAM board
with switches set to 1111 1111 10 has its top address as FFBFFFFF.
FFB3A900 is below FFBFFFFF and above FF7FFFFF (next 4 Mbyte
RAM block down). Therefore, the switches on the defective RAM board
would be set to 1111 1111 10.
Boot ROM Self-Tests
Table 4-3a. LED State Codes In Numerical Order
LEDs Explanation
0000 0000
No failure
0000 000.
Failed CPU register test.
0000 00.0
Testing top 16 Kbytes of RAM.
0000 00 • •
Failure in top 16 Kbytes of RAM.
0000 0.00
Top 16 Kbytes of RAM missing or not found by CPU.
0000 0 . 0 .
Searching for user-supplied Extension ROM.
0000 0 • • 0
Start executing Extension ROM instructions.
0000 0 • • •
Starting Test Vector list.
0000 .000
Resetting all interfaces.
0000 . 0 0 .
Searching for alpha video circuits.
0000 . 0 . 0
Testing RAM for I/O on-board test code.
0000 . 0 • •
I/O on-board test code running.
0000 • • 00
Internal BMD checksum.
0000 • • 0 .
DIO-II console testing.
0000 • • • 0
Failed Boot ROM checksum.
0000 • • • •
Pre-loading RAM for main test.
000. 0000
RAM Testing
000. 000.
Failure: Not enough RAM.
000. 00.0
Failure: RO:r..1 system.
000. 00 • •
Failure: Boot error.
000. 0.00
Failure: OS tried to start loading at too high of an
address.
000. 0 . 0 .
Failure: 'Not enough RAM to load OS.
32 Troubleshooting