Technical data

5-26 PROM Monitor
Error codes are displayed if a fatal error prevents the power-on tests from completing. The
LEDs will flash the error value until the system is powered down or reset. Error codes have
the prefix “FLED” (Flashing LED) attached to their descriptions. For IP19 systems, see
Section 5.7.2, “IP19 LED Error Codes.” For IP21 systems, see Section 5.7.4, “IP21 LED Error
Codes.”
5.7.1 IP19 LED Status Codes
These binary error codes apply to all of the microprocessors resident on the board. IP19
boards are configured with all four banks of LEDs, regardless of the number of
microprocessors installed. See Table 5-5.
.
LED Pattern Displayed
X=Lit
O=Unlit
Description
(Constant Value Displayed)
LSB X O O O O O MSB PLED_CLEARTAGS (1) - Clearing the primary data cache
tags.
LSB O X O O O O MSB PLED_CKCCLOCAL (2) - Testing CC chip local registers.
LSB X X O O O O MSB PLED_CCLFAILED_INITUART (3) - Failed the local test but
trying to initialize UART.
LSB O O X O O O MSB PLED _CCINIT1 (4) - Initializing the CC chip local registers.
LSB X O X O O O MSB PLED_CKCCCONFIG (5) - Testing the CC chip config
registers (requires usable bus to pass). If test hangs, usually
means bus has failed. Check oscillator.
LSB O X X O O O MSB PLED_CCLFAILED_INITUART (6) - Failed the config reg test
but trying to initialize UART.
LSB X X X O O O MSB PLED_NOCLK_INITUART (7) - CC clock not running. Init
UART anyway.
LSB O O O X O O MSB PLED_CCINIT2 (8) - Initializing the CC chip config registers.
LSB X O O X O O MSB PLED_UARTINIT (9) - Initializing the CC chip UART. If test
hangs, usually means bad UART clock. Check connections to
System Controller.
LSB O X O X O O MSB PLED_CCUARTDONE (10) - Finished initializing the CC chip
UART.
LSB X X O X O O MSB PLED_CKACHIP (11) - Testing the A chip registers.
LSB O O X X O O MSB PLED_AINIT (12) - Initializing the A chip.
LSB X O X X O O MSB PLED_CKEBUS1 (13) - Checking the Ebus with interrupts.
LSB O X X X O O MSB PLED_SCINIT (14) - Initializing the System Controller.
LSB X X X X O O MSB PLED_BMARB (15) - Arbitrating for a bootmaster.
Table 5-5 IP19 Board Test Status LED Codes