User guide

3 Operating the Digital Alpha VME 4 Computer
3.1 Controls and Indicators ........................... 3–1
3.2 Console Mode ................................... 3–3
3.2.1 Entering Console Mode . ....................... 3–3
3.2.2 Exiting Console Mode . . ....................... 3–3
3.3 Environment Variables............................ 3–3
3.4 Booting an Operating System ...................... 3–7
3.5 Updating Firmware .............................. 3–7
4 Diagnostics
4.1 Overview ...................................... 4–1
4.2 Operating Environments . . . ....................... 4–1
4.2.1 POST Diagnostics ............................ 4–1
4.2.2 Console Prompt Diagnostics ..................... 4–2
4.3 Diagnostic Test Descriptions ....................... 4–2
4.3.1 Available Console Diagnostics ................... 4–2
4.3.2 SROM Initialization Countdown . . ............... 4–4
4.3.3 Console POST Descriptions ..................... 4–5
POST Non-Volatile RAM Diagnostic . . ............... 4–6
POST Memory Diagnostic . . ....................... 4–7
4.3.4 Console Diagnostic Test Descriptions .............. 4–8
Heartbeat Timer Test ............................. 4–9
Interval Timer Tests ............................. 4–10
DECchip 21040 Ethernet Controller Tests ............. 4–16
DALLAS DS1386 RAMified Watchdog Timekeeper
Tests. . . ....................................... 4–18
Local Area Network Address ROM Test ............... 4–22
NCR 53C810 PCI-SCSI I/O Processor Tests ............ 4–24
Watchdog Timer Interrupt Test ..................... 4–27
VME Interface Tests ............................. 4–28
4.4 Initialization Sequence ............................ 4–30
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