CEKBFD0

This program is designed to be run on a PDP-11/70 on which the CPU, cache, and memory management diagnostic programs have been run. The program will detect all errors that originate with the map box and provide looping capabilities so that the field service engineer can verify the failures. There may be some cases, such as the cache register data path, and cache memory data path, where interaction between modules prohibits close isolation, but the failing function will be called out so the field service engineer can complete the isolation process. This program also provides diagnostic coverage for the 'cache bypass' function on map page for KB11-CM and subsequent processors.

If the program catches an error in an early test and is allowed to continue running through the later tests the error indications from those later tests may be invalid. This is due to the structure of the program, which assumes that all areas tested prior to the current test are functioning properly.

The error type outs will be in table format, with a message indicating the class of error, a header identifying each column, and a report of all pertinent data. When the test can produce more than one error condition, a summary of errors will be given at the end of that test consisting of: the logical 'AND' and 'OR' of the data previously reported and the number of errors in this test. (See section 6.3 for an example of the error typeouts.)

The program loads 044 into the micro break register (17777770) so that a sync pulse is generated on pin #AE1 slot10 every time a NOP is executed. This should help in isolatingthe exact timing of bad or missing signals.