"Memory Contents-Hex"
By Gary Moser
ARCADIAN 1, no. 6 (May. 4, 1979): 44.

From the Arcadian:

Memory Dump program by Gary Moser prints its answers in hexadecimal language.  See what you get for the answer to location 0006.  If it is 61, then your machine is like mine and if it is 66, it is like Tom Wood's.  Is something else, then we have more variants on the street.