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

152 Chapter8
Intrinsics Reference
Intrinsics and Asynchronous Device Control
Intrinsics and Asynchronous Device
Control
Table 8-1 summarizesasynchronousdevicecharacteristics, settings and
communication modes that may be affected programmatically through
use of the intrinsics described in this chapter. It includes a brief
explanation of how initial settings are determined. Unless stated
otherwise, these settings remain in effect until the device is closed.
Table 8-1 Intrinsics and Device Control
Device
Control/Feature
Related Intrinsic(s) Notes
System Break FCONTROL(14, 15)
CAUSEBREAK
Enabled by default for terminal with active
session.
Subsystem Break FCONTROL(16, 17)
XCONTRAP
RESETCONTROL
FCONTROL(41)
Initially disabled;
reset at FCLOSE.
Carriage Control FCONTROL(1)
FWRITE
See Table 9-3, “Selected Carriage Control
Directives,” on page 255 for a list of selected
carriage control directives
EOR Characters FCONTROL(25)
FCONTROL(41)
Standard EOR character for HP terminals is
[Return] for character mode reads.
AEOR Characters FCONTROL(25)
FCONTROL(41)
The default is no AEOR.
Echo FCONTROL(12, 13)
FSETMODE(4)
Initially enabled for terminals at system
start-up.
Line Deletion Echo FCONTROL(34, 35) Initially enabled; reset a FCLOSE
Editing Mode FCONTROL(26, 27)
FCONTROL(41)
Standard editing enabled by default. Reset at
FCLOSE.
Transmission Mode FCONTROL(28, 29) Terminals operate in character mode by
default.
Parity FCONTROL(23, 24)
FCONTROL(36)
Initial parity type determined at port
configuration or sensed at logon. Parity
checking disabled by default.
Terminal Type FCONTROL(37)
FCONTROL(38)
FCONTROL(39)
Default set through port configuration