Technical data

3-102 Computer Group Literature Center Web Site
Test Descriptions
3
PATS - Data Patterns
Command Input
PPCx-Diag>RAM PATS
Description
If the test address range (test range) is less than 8 bytes, the test
immediately returns pass status. The effective test range end address is
reduced to the next lower 8-byte boundary if necessary. Memory in the test
range is filled with all ones ($FFFFFFFF). For each location in the test
range, the following patterns are used:
$00000000
$01010101
$03030303
$07070707
$0F0F0F0F
$1F1F1F1F
$3F3F3F3F
$7F7F7F7F
Each location in the test range is, individually, written with the current
pattern and the 1’s complement of the current pattern. Each write is read
back and verified. This test is coded to use only 32-bit data entities.
Response/Messages
After the command has been issued, the following line is printed:
RAM PATS: Patterns................... Running --->
If all parts of the test are completed correctly, then the test passes:
RAM PATS: Patterns................... Running ---> PASSED
If the test fails, then the display appears as follows:
RAM PATS: Patterns................... Running ---> FAILED
RAM/PATS Test Failure Data:
Data Miscompare Error:
Address =________, Expected =________, Actual =_________