MEMORY.DIAG V02 RP AUTOMATION INC. 14FEB89

DESCRIPTION

This program allows the checking of memory damage in the user

areas of the VAL-II system. It should be run if a "STORAGE

FORMAT ERROR" results from executing a VAL-II FREE command.

PREPARATION

THIS PROGRAM IS NOT A VAL-II PROGRAM. It does not get loaded

into memory using the VAL-II LOAD command. This program is a

diagnostic program. To load and execute this program, insert

the correct diskette into the floppy disk drive, and type

"DIAG MEMORY.DIAG".

PROGRAM EXECUTION

This program will start to execute automatically once it has

finished loading into memory. Diagnostic programs do this.

The program will check the "boundary tags" in the user areas

of the memory. These boundary tags are the way that VAL-II

keeps track of which memory is available and which memory is

used. The program will either continue until all memory has

been checked and it is all good, or until the first error is

found. In both cases, a message will be displayed to the CRT

screen stating the results.

MESSAGES

Memory OK - Boundary tags match

This message will get displayed if all memory is found to be

correct.

Error: dddddd @ pppppp,aaaaaa

This message will get displayed if an error is found when the

boundary tags are checked.

The data, "dddddd", is the data that should have been at that

address.

The PAR contents, "pppppp", is part of the address.

The logical address, "aaaaaa", is part of the address also.

To calculate the physical address, multiply "pppppp" by ^100,

and then add that result to "aaaaaa". This is the physical

address that the data was incorrect at.