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MP/8 V.34: Getting Started
Software Flow Control Template
—
&F2
This template is the same as &F1, except &F2 uses software flow
control.
Table 3.2 on the opposite page lists the configuration command
settings of the software flow control template. Settings different
from the default template are noted in bold.
The modem sends the computer or terminal the standard ASCII
Transmit OFF (XOFF) character, <Ctrl>-S, when its buffer nears
90% capacity. The modem sends the ASCII Transmit ON
character, <Ctrl>-Q, when the buffer is about half full. ASCII
definitions are as follows:
XON <Ctrl>-Q
(ASCII 17 Decimal, 11 Hex)
XOFF <Ctrl>-S
(ASCII 19 Decimal, 13 Hex)
Use of software flow control may prove satisfactory if you're
only transferring text files. However, if you're transferring non-
text (binary) files, or using an Xmodem-type protocol, there is a
risk that the XON/XOFF characters will be confused with
control characters in the files or protocol. You may wish to
disable flow control entirely (&R1, &I0). In addition, set the
modem to &B0 and &N0, so that the serial port and connection
rates are equal.
Recommended Uses
For use with software and hardware that doesn’t support
hardware flow control.
