MPE/iX Intrinsics Reference Manual (32650-90905)

156 Chapter5
Command Definitions (FCONTROL - FLOCK)
FDEVICECONTROL
terminal immediately after the characters defined as the subsystem break
or EOR character are typed. The terminal user has to press
RETURN to
cause data to be transmitted, or wait for the data forwarding timer to
expire (if set). The host software recognizes and acts on the characters
defined in this call.
Disable transparent editing by passing NUL characters.
26 Device XON/XOFF:
Enable or disable XON/XOFF flow control between the
device and the DTC:
1
Enable device XON/XOFF
0
Disable device XON/XOFF
When enabled, the DTC stops sending data to the device
when XOFF is received and resumes when XON is
received. XON/XOFF characters are not sent to the host.
When disabled, the XON/XOFF characters are not treated
as control characters, but are passed to the host as data.
When disabled, data overruns can occur.
27 Set XOFF timer value:
Enable or disable the XOFF timer.
To enable the XOFF timer, pass a positive value,
representing time in seconds, in the
buffer parameter.
The XOFF timer causes a warning message to be sent to
the console if a device is XOFFed for a time exceeding the
set limit.
To disable the XOFF timer, pass a 0 or negative value in
the
buffer parameter.
If issued to a terminal connected through PAD, CCE (2) is
returned, but no terminal control action occurs.
28 Block mode types supported:
This is a read only request that returns a value
representing the type of block mode supported by the
driver. Valid values are:
6
DTC style page block mode
7
Line and DTC style page block mode
15