Serial Communication Chip (SCC) I/O Test
The serial communication chip (SCC) I/O test checks the ability
of the SCC to perform an I/O operation on a serial line. To run
the SCC I/O test, type
t 3/scc/io
[
line
] [
loopback
] and press
Return.
When you type the SCC I/O test command,
Replace the optional
line
parameter with a value that
specifies which line to test.
Specify 0 to test serial line 0. 0 is the default serial
line.
Specify 1 to test serial line 1.
Specify 2 to test serial line 2.
Specify 3 to test serial line 3.
Replace the optional
loopback
parameter with a value that
specifies the type of loopback operation the test performs.
Specify intl to run an internal loopback operation. Intl
is the default type of loopback that the test performs.
Specify extl to run an external loopback operation.
SCC I/O test error messages
SCC I/O test error messages have the form ?TFL: 3/scc/io (
code
:
Ln
N description
).
?TFL: 3/scc/io indicates that the SCC I/O test reported an
error.
code
represents a number that identifies which portion of
the test failed.
N
represents the number of the line in which the error
occurred.
description
represents additional information that describes
the error.
D–14
Base System Test Commands and Messages
Содержание DECstation 5000/100 Series
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