Vax V-041HS Service Manual download pdf (Page 274)

Appendix B

Console Error Messages for Model 400

Table B–1 lists Model 400 messages that appear when the processor halts

and the console gains control. Most messages are followed by:

• PC = xxxxxxxx — program counter = address at which the processor

halted or the exception occurred

• PSL = xxxxxxxx — processor status longword = contents of the register

• –SP = xxxxxxxx — –SP is one of the following:

ESP executive stack pointer

ISP interrupt stack pointer

KSP kernel stack pointer

SSP supervisor stack pointer

USP user stack pointer

Table B–2 lists other console error messages.

Table B–1: Model 400 Console Error Messages Indicating Halt

Error Message Meaning

?02 External halt (CTRL/P, break, or exter-

nal halt).

CTRL/P

or STOP command.

?03 Power-up halt. System has powered up, had a system re-

set, or an XMI node reset.

?04 Interrupt stack not valid during excep-

tion processing.

Interrupt stack pointer contained an in-

valid address.

?05 Machine check occurred during excep-

tion processing.

A machine check occurred while han-

dling another error condition.

?06 Halt instruction executed in kernel mode. The CPU executed a Halt instruc-

tion.

?07 SCB vector bits <1:0> = 11. An interrupt or exception vector in the

System Control Block contained an in-

valid address.

Console Error Messages for Model 400 B–1

1 2 ... 269 270 271 272 273 274 275 276 277 278 279 ... 298 299

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Vax V-041HS Service Manual Page 274