User`s guide

4.5 Machine State on Power-Up. . ........................... 4–17

4.6 Main Memory Layout and State ......................... 4–17

4.6.1 Reserved Main Memory . . ........................... 4–18

4.6.1.1 PFN Bitmap ................................... 4–18

4.6.1.2 Scatter/Gather Map . . ........................... 4–19

4.6.1.3 Firmware "Scratch Memory" . . . ................... 4–19

4.6.2 Contents of Main Memory ........................... 4–19

4.6.3 Memory Controller Registers ......................... 4–20

4.6.4 On-Chip and Backup Caches ......................... 4–20

4.6.5 Translation Buffer ................................. 4–20

4.6.6 Halt-Protected Space ............................... 4–20

4.7 Operating System Bootstrap . ........................... 4–20

4.7.1 Preparing for the Bootstrap .......................... 4–21

4.7.2 Primary Bootstrap Procedures (VMB) .................. 4–23

4.7.3 Device Dependent Secondary Bootstrap Procedures ........ 4–26

4.7.3.1 Disk and Tape Bootstrap Procedure ................. 4–26

4.7.3.2 PROM Bootstrap Procedure ....................... 4–27

4.7.3.3 MOP Ethernet Functions and Network Bootstrap

Procedure . . ................................... 4–28

4.7.3.4 Network "Listening" . . ........................... 4–33

4.8 Operating System Restart . . . ........................... 4–34

4.8.1 Locating the RPB .................................. 4–35

5 System Troubleshooting and Diagnostics

5.1 Basic Troubleshooting Flow . . ........................... 5–1

5.2 Product Fault Management and Symptom-Directed Diagnosis. . . 5–3

5.2.1 General Exception and Interrupt Handling .............. 5–3

5.2.2 OpenVMS Error Handling ........................... 5–4

5.2.3 OpenVMS Error Logging and Event Log Entry Format . . . . . 5–6

5.2.4 OpenVMS Event Record Translation ................... 5–14

5.2.5 Interpreting CPU Faults Using ANALYZE/ERROR ........ 5–15

5.2.6 Interpreting Memory Faults Using ANALYZE/ERROR . . . . . 5–18

5.2.6.1 Uncorrectable ECC Errors ........................ 5–18

5.2.6.2 Correctable ECC Errors .......................... 5–22

5.2.7 Interpreting System Bus Faults Using ANALYZE/ERROR. . . 5–26

5.2.8 Interpreting DMA Host Transaction Faults Using

ANALYZE/ERROR ................................. 5–28

5.2.9 VAXsimPLUS and System-Initiated Call Logging (SICL)

Support ......................................... 5–32

5.2.9.1 Converting the SICL Service Request MEL File ....... 5–37

5.2.9.2 VAXsimPLUS Installation Tips . ................... 5–38

5.2.9.3 VAXsimPLUS Post-Installation Tips ................ 5–39