ASYNC_GETMODEMINPUT (67h) - Modem Control Input Status

Modem Control Input Status

If a bit has a value of 1, the condition is on. If a bit has a value of 0, the condition is off.

Bit 0-3

Undefined
Bit 4
Clear To Send (CTS)
Bit 5
Data Set Ready (DSR)
Bit 6
Ring Indicator (RI)
Bit 7
Data Carrier Detect (DCD)

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