NIBBLES_PER_CARD  497 src/dps8/dps8_crdrdr.c #define BYTES_PER_CARD (NIBBLES_PER_CARD / 2)
NIBBLES_PER_CARD  519 src/dps8/dps8_crdrdr.c     for (int current_nibble = 0; current_nibble < NIBBLES_PER_CARD; current_nibble++)