current_nibble    519 src/dps8/dps8_crdrdr.c     for (int current_nibble = 0; current_nibble < NIBBLES_PER_CARD; current_nibble++)
current_nibble    521 src/dps8/dps8_crdrdr.c         int byte_offset = current_nibble / 2;
current_nibble    522 src/dps8/dps8_crdrdr.c         int nibble_offset = (2 - (current_nibble % 3)) * 4;
current_nibble    523 src/dps8/dps8_crdrdr.c         int col = current_nibble / 3;
current_nibble    525 src/dps8/dps8_crdrdr.c         word12 nibble = (current_nibble & 0x1) ? byte_buffer[byte_offset] : (byte_buffer[byte_offset] >> 4);