lower 8 bits of address), 4 for A8-A11 (output on port P2), ALE and PSEN.
An optional A12 is supported, which may be an arbitrary I/O pin driven by
software (use case is dumping ROM of an HP 3478A).
-
-The two groups D0-D7 and A8-A12 must be on consecutive channels, for
-example CH8..CH15 and CH0..CH4.
'''
from .pd import Decoder