processing row/column/bit 5/0/0: (unprintable square box symbol)
Incoming byte is 0/0/       0/00000000.  Test bitmask is 128/80/10000000/00110001.
processing row/column/bit 4/0/0: (unprintable square box symbol)
Incoming byte is 0/0/       0/00000000.  Test bitmask is 128/80/10000000/00110001.
processing row/column/bit 3/0/0: (unprintable square box symbol)
Incoming byte is 0/0/       0/00000000.  Test bitmask is 128/80/10000000/00110001.
processing row/column/bit 2/0/0: (unprintable square box symbol)
Incoming byte is 0/0/       0/00000000.  Test bitmask is 128/80/10000000/00110001.
processing row/column/bit 1/0/0: (unprintable square box symbol) 
Incoming byte is 0/0/       0/00000000.  Test bitmask is 128/80/10000000/00110001.
processing row/column/bit 0/0/0: ?
Incoming byte is 0/0/       0/10010000.  Test bitmask is 128/80/10000000/00110001.
...