March Address Test (Mt E) - Motorola M68CPU32BUG User Manual

MT E
6.5.5 March Address Test
CPU32Diag>MT E
MT E performs a march address test from Start Address to Stop Address. The march address test
has been implemented in this manner:
1. All memory locations from Start Address up to Stop Address are cleared to 0.
2. Beginning at Stop Address and proceeding downward to Start Address, each memory
location is checked for bits that did not clear and then the contents are changed to all
F's (all the bits are set). This process reveals address lines that are stuck high.
3. Beginning at Start Address and proceeding upward to Stop Address, each memory
location is checked for bits that did not set and then the memory location is again
cleared to 0. This process reveals address lines that are stuck low.
EXAMPLE
After the command is entered, the display should appear as follows:
E MT March Addr. Test................Running ---------->
If an error is encountered, then the memory location and other related information are
displayed.
E MT March Addr. Test................Running ---------->..... FAILED
(error-related information)
If no errors are encountered, then the display appears as follows:
E MT March Addr. Test................Running ----------> PASSED
M68CPU32BUG/D REV 1
March Address Test
6-17
DIAGNOSTIC FIRMWARE GUIDE
MT E