DEC DECstation 5000 Model 100 Series, Руководство по обслуживанию

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Collision Test
The collision test checks the Ethernet’s collision detect circuitry
by forcing a collision on transmit. To run the collision test, type
t x05 P1 and press Return. When you use this test command,
Replace x with the unit number of the Ethernet controller
that you want to test.
Replace the optional P1 parameter with the Ethernet
address in which you want to set up structures.
Collision test parameters and error codes
Table F-41 describes the parameters used in collision test
commands and error messages.
Table F-42 lists the error codes used in collision test error
messages.
Table F-41. Collision Test Parameters
Parameter Description
P1 Ethernet address used for setting up structures
P2 Return status from any of the common subroutines
P3 Last value read from CSR0
Table F-42. Collision Test Error Codes
Error Code Description
1 Error occurred reading Ethernet station address ROM.
2 Error occurred transmitting packet.
3 Packet went normally when it should have failed.
4 Error other than retry error occurred during packet
transmission.
Test Commands and Messages Produced by Version PDE3 ROM Chips F–33