$DC0A/56330/CIA1+10:  Time-of-Day Clock: Minutes

   +----------+---------------------------------------------------+
   | Bit  7   |   Always 0                                        |
   | Bits 6-4 |   10 Minutes in BCD-Format                        |
   | Bits 3-0 |    1 Minutes in BCD-Format                        |
   +----------+---------------------------------------------------+