1200 BPS Internal Modem  (250-1013D)  Registers        Faxback Doc. # 4917

BIT-MAPPED REGISTER

S13 is a bit-mapped register.  The supported register bits are defined in 
the table below.

A bit-mapped register provides some useful information and may be accessed
through your program.  However, do not use this register to control the 
modem. WRITING TO A BIT-MAPPED REGISTER MAY PRODUCE UNPREDICTABLE RESULTS.

              ┌───┬─────────┬──────────────────────────────────┐
              │BIT│CONDITION│     FUNCTION                     │
              ├───┼─────────┼──────────────────────────────────┤
              │ 0 │         │ Undefined                        │
              ├───┼─────────┼──────────────────────────────────┤
              │ 1 │         │ Undefined                        │
              ├───┼─────────┼──────────────────────────────────┤
              │ 2 │    0    │ Parity disabled                  │
              │   │    1    │ Parity enabled                   │
              ├───┼─────────┼──────────────────────────────────┤
              │ 3 │    0    │ Odd parity                       │
              │   │    1    │ Even parity                      │
              ├───┼─────────┼──────────────────────────────────┤
              │ 4 │    0    │ 7 data bits                      │
              │   │    1    │ 8 data bits                      │
              ├───┼─────────┼──────────────────────────────────┤
              │ 5 │         │ Undefined                        │
              ├───┼─────────┼──────────────────────────────────┤
              │ 6 │         │ Undefined                        │
              ├───┼─────────┼──────────────────────────────────┤
              │ 7 │         │ Undefined                        │
              └───┴─────────┴──────────────────────────────────┘

(css 07/28/93)