OBSERVATION: The HP 2100 MS device simulates the HP 7970 B/E magnetic tape
drives. The 7970B uses NRZI format, and its associated controller supports
returning the cyclic redundancy check character and longitudinal redundancy
check character (CRCC and LRCC) to the CPU. Typically, these are used only
by the controller diagnostic, but support is easy to add.
RESOLUTION: Modify "hp2100_ms.c" to add a function that calculates CRCC
and LRCC for reads and writes, and call that function when the CPU requests
that the controller deliver the values.
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