Technical data

CHALLENGE/Onyx Diagnostic Road Map 5-29
5.7.3 IP21 LED Status Codes
Table 5-7 lists the IP21 status codes:
LSB X X X O X X MSB FLED_BADCACHE (55) - CPU’s primary data cache test
failed.
LSB O O O X X X MSB FLED_BADIO4 (56) - IO4 board is bad (can’t get to console).
LSB X O O X X X MSB FLED_UTLBMISS (57) - Took a TLB refill exception.
LSB O X O X X X MSB FLED_XTLBMISS (58) - Took an extended TLB refill exception.
LSB X X O X X X MSB FLED_CACHE (59) - Unused.
LSB O O X X X X MSB FLED_GENERAL (60) - Took a general exception.
LSB X O X X X X MSB FLED_NOTIMPL (61) - Took an unimplemented exception.
LSB O X X X X X MSB FLED_ECC (62) - Took a cache error exception.
LED Pattern Displayed
X=Lit
O=Unlit
Description (Constant Value Displayed)
LSB X O O O O O MSB PLED_STARTUP 1 (1) - PROM has started execution
LSB O X O O O O MSB PLED_TESTICACHE (2) - test icache
LSB X X O O O O MSB PLED_CHKSCACHESIZE (3) - check scache size
LSB O O X O O O MSB PLED_INITCOP0 (4) - init cop0 registers
LSB X O X O O O MSB PLED_FLUSHTLB (5) - flush tlb
LSB O X X O O O MSB PLED_FLUSHSAQ (6) - flush store address queue
LSB X X X O O O MSB PLED_CLEARTAGS (7) - Clearing the pd tags
LSB O O O X O O MSB PLED_CKCCLOCAL (8) - Testing CC chip local registers
LSB X O O X O O MSB PLED_CCLFAILED_INITUART (9) - Failed the local test but
trying to initialize the UART anyway
LSB O X O X O O MSB
LSB X X O X O O MSB
PLED_CCINIT1(10), PLED_CKCCCONFIG (11) - Testing the CC
config registers requires a usable bus to pass) Hanging in this test
usually means that the bus has failed. Check the oscillator.
LSB O O X X O O MSB PLED_CCCFAILED_INITUART (12) - Failed the config reg test
but trying to initialize the UART anyway
Table 5-7 IP21 Board Test Status LED Codes
LED Pattern Displayed
X=Lit
O=Unlit
Description (Flashing Value Displayed)
Table 5-6 (continued) IP19 Board Power-on Test Failure LED Codes