Digital Equipment DECstation 5000/100 Series, Maintenance Manual

Page: 314 / 392

CPU Module Tests
The following entries explain the commands, parameters, and
error messages for each CPU module test.
Cache Data Test
The cache data test writes data patterns to the cache and then
reads them. To run the cache data test, type t 3/cache/data
[ cache ] [ address ] and press Return.
When you type the cache data test command,
Replace cache with a value that specifies the cache you
want to test.
Specify I to test the instruction cache.
Specify D to test the data cache. D is the default
value.
Replace the optional address parameter with a specific
cache address where you want the test to start. Note that
using the optional address parameter requires familiarity
with the firmware specifications.
Cache data test error messages
Cache data test error messages have the form
?TFL:3 /cache/data ( code : [ address = actual , sb expected )
?TFL 3/cache/data indicates that the cache data test
reported an error.
code represents a number that identifies which portion of
the test failed.
The optional
address = actual , sb expected phrase indicates
the expected and actual values in the cache.
address
represents the address where the error
message occurred.
actual represents the actual value at that address.
expected represents the expected value for that
address.
D–22 Base System Test Commands and Messages