Technical data

L2CACHE - Level 2 Cache Tests
http://www.motorola.com/computer/literature 3-61
3
WBINV - Write Back w/Invalidate
Command Input
PPCx-Diag>l2cache wbinv
Description
This test performs a write/read test on the L2 Cache. This test verifies that
the device can be both accessed and that the L2 Cache Invalidate control
is working. The test flow is as follows:
Turn off the cache. Write an incrementing pattern to memory. Turn on the
cache with WriteBack. Write a decrementing pattern to cache while
invalidating the cache. Flush the cache, which should have no effect.
Verify that the incrementing pattern is still in memory.
Response/Messages
After the command has been issued, the following line is printed:
L2CACHE WBINV: L2-Cache WriteBack w/Invalidate... Running --->
If all parts of the test are completed correctly, then the test passes:
L2CACHE WBINV: L2-Cache WriteBack w/Invalidate... Running --->
PASSED
If any part of the test fails, then the display appears as follows:
L2CACHE WBINV: L2-Cache WriteBack w/Invalidate... Running --->
FAILED
L2CACHE/WBINV Test Failure Data:
(error message)
Refer to the section L2CACHE Error Messages for a list of the error
messages and their meaning.