The historical transcript below records one unexpected exception/interrupt through vector 420 during an OpenVMS boot. In that observation the firmware rebooted the guest automatically and the later boot reached OpenVMS V8.3. The event has not been reproduced across the 5.1.0 candidate guest matrix, is not evidence of universal physical-hardware parity, and does not guarantee an automatic reboot after every vector 420 exception. If the firmware does not restart, preserve the console diagnostics and use the normal console recovery procedure for the installed guest.

ff.fe.fd.fc.fb.fa.f9.f8.f7.f6.f5.
ef.df.ee.ed.ec.f4.eb.ea.e9.e8.e7.e6.....e5.
V7.0-9, built on Mar 18 1999 at 13:25:37
 
CPU 0 booting
 
(boot dka200.2.0.6.0 -flags 0)
block 0 of dka200.2.0.6.0 is a valid boot block
reading 1226 blocks from dka200.2.0.6.0
bootstrap code read in
base = 1f2000, image_start = 0, image_bytes = 99400
initializing HWRPB at 2000
initializing page table at 1e4000
initializing machine state
setting affinity to the primary CPU
jumping to bootstrap code
unexpected exception/interrupt through vector 420
process idle, pcb = 001159D0
 
pc: 00000000 00116A24  ps: 00000000 00001F04
r2: 00000000 001112A0  r5: 00000000 00001F04
r3: 00000000 00022650  r6: 00000000 00001259
r4: 00000000 000EE658  r7: 00000000 0000000A
 
exception context saved starting at 00116900
 
GPRs:
 0: 00000000 00000000  16: 00000000 00116A08
 1: 00000000 000001F4  17: 00000000 00006000
 2: 00000000 000ED330  18: 00000000 000384C0
 3: 00000000 00076CC0  19: 00000000 0012DD10
 4: 00000000 000EE658  20: 00000000 0012DD10
 5: 00000000 00038B88  21: 00000000 00000000
 6: 00000000 00001259  22: 00000000 00116A08
 7: 00000000 0000000A  23: 00000000 00000001
 8: 00000000 00110670  24: 00657174 00000000
 9: 00000000 00110678  25: 00000000 00000001
10: 00000000 000D0DE8  26: 00000000 00116A20
11: 00000000 00000001  27: 00000000 00111940
12: 00000000 001159D0  28: 00000000 00038BD8
13: 00000000 00000010  29: 00000000 00000000
14: 00000000 00000011  30: 00000000 00116A40
15: 00000000 00000000
 
dump of active call frames:
 
breakpoint at PC 1108e0 desired, XDELTA not loaded
ff.fe.fd.fc.fb.fa.f9.f8.f7.f6.f5.
ef.df.ee.ed.ec.f4.eb.ea.e9.e8.e7.e6.....e5.
V7.0-9, built on Mar 18 1999 at 13:25:37
 
CPU 0 booting
 
(boot dka200.2.0.6.0 -flags 0)
block 0 of dka200.2.0.6.0 is a valid boot block
reading 1226 blocks from dka200.2.0.6.0
bootstrap code read in
base = 1f2000, image_start = 0, image_bytes = 99400
initializing HWRPB at 2000
initializing page table at 1e4000
initializing machine state
setting affinity to the primary CPU
jumping to bootstrap code
 
 
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