NOTE: This program currently assumes that the momentum lookup proms are
being addressed with 3 bits selecting the page and 8 bits selecting the
input. If it is going to be addressed with 2 bits selecting the page and 9
bits selecting the input, then code needs to be changed in the routine
MOMENTUM_PROM_ADDRESS to get the address bit assignments correct, and the
parameter declarations for PAGE_LENGTH in GEN_ALL_PROMS and GEN_ONE_PROM
need to be changed from 256 to 512.