Owner`s manual

Appendix H
Console Error Messages (Model 400
and Higher)
Table H–1 lists Model 400/500/600 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 H–2 lists other console error messages that are common to Model 400
and higher systems. Table H–3 lists console error messages that apply only
to Models 500 and 600. Table H–4 lists console error messages unique to
Model 600.
On Model 400, system error messages and number codes appear as:
?nn <message>
Console Error Messages (Model 400 and Higher) H–1