Silicon Graphics POWER CHALLENGE User Manual page 134

Appendix C: System Controller Messages
118
Table C-4 (continued)
Error Message
COP FAILURE
COP MONITOR FAILURE
DEBUG SWITCH ERROR
FP CONTROLLER FAULT
FP READ FAULT
FREE MSG NODE ERROR
FREE TCB NODE ERROR
ILLEGAL OPCODE TRAP
PULSE ACCU INPUT
PULSE ACCU OVERFLOW
SPI TRANSFER
Internal System Controller Error Messages
Error Meaning
The Computer Operating Properly (COP) timer
exceeded time limits. The System Controller
firmware must write to a COP timer port before it
times out. If the firmware exceeds the time allowed
between writes to a COP port, an interrupt is
generated. The System Controller firmware may
have entered an endless loop.
A Computer Operating Properly (COP) clock
monitor failure was detected. The System Controller
clock oscillator is operating at less than
10 KHz.
The System Controller detected data corruption in
the nonvolatile RAM debug switch location.
An error was detected in the front panel LCD screen
control process.
A read of the front panel status register did not
complete successfully.
The free message node queue overflowed.
The free timer control block queue overflowed.
The System Controller's microprocessor tried to
execute an illegal instruction, probably because of a
stack overrun followed by a process switch.
An interrupt was detected on the pulse accumulator
input port. The port is not used and an interrupt is
treated as an error.
The pulse accumulator overflow port received an
interrupt. This port is unused and the interrupt is
treated as an error.
An interrupt was detected on the synchronous serial
peripheral interface. This interface is not supported
and the interrupt is treated as an error.