Allied Telesis AT-2973T User Manual

AT-2973SX, AT-2973T, and AT-2973T/4 NetExtreme II Family Adapters Installation and User’s Guide

161

The diagnostic tests are divided into four groups:



Basic Functional Tests (Group A)



Memory Tests (Group B)



Block Tests (Group C)



Ethernet Traffic Tests (Group D). 

The diagnostic tests are described in Table 9.

Table 9. Diagnostic Tests

A1 

Register

Verifies that registers accessible through the 
PCI/PCI-E interface implement the expected 
read-only or read/write attributes by 
attempting to modify those registers.

A2

PCI Configuration 

Checks the functionality of the PCI Base 
Address Register (BAR) by varying the 
amount of memory requested by the BAR and 
verifying that the BAR actually requests the 
correct amount of memory (without actually 
mapping the BAR into system memory). Refer 
to PCI or PCI-E specifications for details on 
the BAR and its addressing space. 

A3

Interrupt

Generates a PCI interrupt and verifies that the 
system receives the interrupt and invokes the 
correct ISR. A negative test is also performed 
to verify that a masked interrupt does not 
invoke the ISR. 

A5 

MSI 

Verifies that a Message Signaled Interrupt 
(MSI) causes an MSI message to be DMA'd to 
host memory. A negative test is also 
performed to verify that when an MSI is 
masked, it does not write an MSI message to 
host memory. 

A6 

Memory BIST

Invokes the internal chip Built-In Self Test 
(BIST) command to test internal memory.