Asynchronous Terminals and Printer Processes Programming Manual

TERMINAL I/O
Line-Configuration Characteristics
Both TERMPROCESS and CSSASYNC support 200 baud operation.
However, to select 200 baud for a TERMPROCESS subdevice, you must
use the BAUD2000 SYSGEN modifier. The 6303/6304 controller does
not support 2000 baud. For CSSASYNC subdevices, BAUD200 selects
200 baud, and BAUD2000 selects 2000 baud. CSSASYNC running on an
LIU1 and TERMPROCESS support 3600 baud operation; CSSASYNC on an
LIU4 does not.
Communication speed is set at SYSGEN time. You can change the
SYSGEN default with SETMODE 22. For ATP6100 subdevices, you can
change the default by including the SPEED attribute in the CMI
ALTER SU command.
Character Size
The number of bits in each character depends on several charac-
teristics. The number of data bits can be 5, 6, 7, or 8. Use
SYSGEN, SETMODE, or CMI to select the number of data bits.
One or more stop bits are added after the last data bit. Use
SYSGEN or CMI to select 1, 1.5, or 2 stop bits.
The parity generation SYSGEN modifiers (ODD, EVEN, or NONE)
specify whether the system uses odd, even, or no parity with data
it sends to the terminal. You can change the SYSGEN default
with a SETMODE 24 call. For ATP6100 subdevices, you can change
the default by including the PARITY attribute in a CMI ALTER SU
command.
The CHECK and NOCHECK SYSGEN modifiers specify whether or not
the host performs parity checking on data it receives from the
terminal. With CHECK, the type of parity is the same as for
outgoing data. You can change the SYSGEN default with a SETMODE
10 call. For ATP6100 subdevices, you can change the default by
including the PARITYCHK attribute in a CMI ALTER SU command.
Connection Type
The HARD SYSGEN modifier indicates that the device is connected
directly to the LIM or patch panel (hard-wired). The MODEM
modifier indicates that the device is connected to the host
through a modem. The EIA modifier indicates that the device is
connected through an RS-232 interface. The EIA modifier can be
used with either hard-wired devices or devices attached through
a modem. The CL modifier indicates that the device is connected
through a 20-ma current loop interface. Current loop can be used
only for hard-wired devices.
2-14 November 1987