Technical data

VME3- Universe VME to PCI Bridge Tests
http://www.motorola.com/computer/literature 3-147
3
REGW - Register Write/Read
Command Input
PPCx-Diag>VME3 regw
Description
This test performs a “read / modify / read / restore / verify” sequence to
selected registers in the Universe chip. The registers are part of the 4
Kilobyte UCSR, and are accessed as PCI Memory space. The values
written are chosen in order to verify as many device address and data lines
as is safely possible. If the registers contain the expected value(s) at the
second read and the final verify step, then the test will pass. The test will
fail if either the modified value could not be subsequently read, or if the
restoration of the original value could not be accomplished.
Response/Messages
After the command has been issued, the following line is printed:
VME3 regw: Register Write/Read ............Running --->
If all parts of the test are completed correctly, then the test passes:
VME3 regw: Register Write/Read :......Running ---> PASSED
If any part of the test fails, then the display appears as follows:
VME3 regw: Register Write/Read :......Running ---> FAILED
VME3 regw Test Failure Data:
(error message)
Refer to the section VME3 Error Messages for a list of the error messages
and their meaning.