Asynchronous Serial Communications Programmer's Reference Manual (32022-90052)

192 Chapter8

Intrinsics Reference

FCONTROL(36)

incoming data, the local terminal control that

determines whether or not parity is checked should be

set to check parity.

Parity cannot be used with 8-bit character sets.

This call is ignored for devices connected via PAD, DTC

Telnet, Telnet/iX, or VT. If issued against such a device

it will return a condition code of CCE, but no device

control action will occur.

Table 8-5 Parity Settings with FCONTROL(36)

Condition Codes

CCE Request granted.

CCG Not returned by this intrinsic.

CCL Failed because the ﬁle number speciﬁed did not belong

to this process, the device is not a terminal, or an

invalid value was used for param.

Additional Discussion

See also discussion of FCONTROL(23,24) in this manual.

Value of param Parity Type Results if Enabled

0 Zeros No parity checked on input

Eighth bit set to 0 on output

1 Ones No parity check on input

Eighth bit set to 1 on output

2 Even Even parity checked on input

Even parity generated on output

3 Odd Odd parity check on input

Odd parity generated on output

4 None No parity checked on input

No parity checked on output