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54 Chapter 7 Special Features: Modem Emulation
S21
General Bit Mapped Options Status
Indicates the status of command options.
Default:52 (34h) (00110100b)
Bit 0Set by &Jn command but ignored other-
wise.
0 =&J0 (Default.)
1 =&J1
Bit 1Reserved
Bit 2CTS behavior (&Rn)
0 =CTS tracks RTS (&R0)
1 =CTS always on (&R1) (Default.)
Bits 3-4DTR behavior (&Dn)
0 =&D0 selected
1 =&D1 selected
2 =&D2 selected (Default.)
3 =&D3 selected
Bit 5RLSD (DCD) behavior (&Cn)
0 =&C0 selected
1 =&C1 selected (Default.)
Bit 6DSR behavior (&Sn)
0 =&S0 selected (Default.)
1 =&S1 selected
Bit 7Long space disconnect (Yn)
0 =Y0 (Default.)
1 =Y1
- - * 52 (34h)
S22 Accepted but ignored. - - *
117
(75h)
Register Function Range Units Saved Default