Specifications

138
by C2 to C0 contains a byte which shows the status of the counter.
The data format of the counter read/write register then becomes:
BASE+24/26/28(Dec) Status read-back mode
Bit D7 D6 D5 D4 D3 D2 D1 D0
Value OUT NC RW1 RW0 M2 M1 M0 BCD
OUT Current state of counter output
NC Null count is 1 when the last count written to the counter
register has been loaded into the counting element