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D.4 Cbox Read Register..............................................................................D-8

D.5 Exception Address Register (EXC_ADDR)........................................ D-10

D.6 Interrupt Enable and Current Processor Mode Register (IER_CM).. D-12

D.7 Interrupt Summary Register (ISUM) ................................................ D-14

D.8 PAL Base Register (PAL_BASE) ....................................................... D-16

D.9 Ibox Control Register (I_CTL)............................................................ D-18

D.10 Process Context Register (PCTX)....................................................... D-23

D.11 21272-CA Cchip Miscellaneous Register (MISC)............................... D-26

D.12 21272-CA Cchip CPU Device Interrupt Request Register

(DIRn, n=0,1,2,3)................................................................................ D-29

D.13 21272-CA Pchip Error Register (PERROR)....................................... D-31

D.14 21272-CA Array Address Registers (AAR0–AAR3) ........................... D-35

D.15 DPR Registers for 680 Correctable Machine Check Logout Frames . D-37

D.16 DPR Power Supply Status Registers ................................................. D-40

D.17 DPR 680 Fatal Registers.................................................................... D-41

D.18 CPU and System Uncorrectable Machine Check Logout Frame...... D-42

D.19 Console Data Log Event Environmental Error Logout Frame

(680 Uncorrectable)............................................................................ D-43

D.20 CPU and System Correctable Machine Check Logout Frame........... D-44

D.21 Environmental Error Logout Frame (680 Correctable)..................... D-45

D.22 Platform Logout Frame Register Translation ................................... D-46

Appendix E Isolating Failing DIMMs

E.1 Information for Isolating Failures ........................................................E-2

E.2 DIMM Isolation Procedure....................................................................E-3

E.3 EV6 Single-Bit Errors.........................................................................E-16

Index

Examples

3–1 Sample SROM Power-Up Display.........................................................3-8

3–2 SRM Power-Up Display ......................................................................3-10

3–3 Memory Resize Crash/Reboot Cycle....................................................3-15

3–4 Sample Console Event Log.................................................................. 3-19

3–5 AlphaBIOS Initialization Screen........................................................3-20

3–6 AlphaBIOS Boot Screen......................................................................3-21

3–7 Checksum Error and Fail-Safe Load ..................................................3-24

4–1 buildfru .................................................................................................4-4

4–2 more el...................................................................................................4-8

Compaq AlphaServer ES40 User Manual

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