Installation guide

Switches and Indicators

July 12, 2006 11:12 am

chapter2.fm

2-13

Circuit Boards

Table 2-5 lists and describes the diagnostic display codes for the

UltraNet Service Monitor (USM) Application Processor.

Table 2-5 USM Diagnostic Display Codes

Display Code Description

boot USM Boot startup successful and ready for operator input

0000 Setup ROM controller registers

0001 i960 EPROM Checksum Compare

001A Read SDRAM serial EPROM using 12C engine

001B Setup V380 SDRAM controller registers

001C Setup SDRAM Banks, DRAM timing parameters, and SDC Bus Watch

001D Sending PreCharge, 2 AutoFresh cmds, and Mode Set cmd to SDRAM

0002 Walking ones test on the UART

0003 Walking ones test on a first memory location

0004 Write/read test on first 4 long word memory locations

0005 Write/read test on first 4 Megabytes of SDRAM.

0006 Performing a size check of memory

0007 Setup SDRAM parity enable

0008 Clearing all memory

0009 Clearing on-chip data RAM

000A Copying the .data area from EPROM, initializing the BSS area of RAM

000B Initializing the interrupt table

000C Initializing the fault table, copying PRCB to RAM

000D Re-initializing with the RAM-based PRCB

000E Jumping to Main

000F Connecting IOP to COM2