Commodore modem 300 User Manual page 31

indicator for X-ON/X-OFF. PRESS: (HOME). Notice that a reversed @
^ now displays. This indicates that transmission is now inhibited.
X-ON (also known as CTRL-S) is used between computers to tempo­
rarily stop transmission. The HOME key sends this signal. Now
PRESS: (CURSOR DOWN). The ^ disappears. The CURSOR DOWN
key sends the signal to resume transmission. This signal to resume
transmission is called X-OFF (or CTRL-Q). This toggle will activate
automatically for various functions between your computer and the
remote computer. Check for a reversed X whenever your keyboard
does not appear to work. See page 44 on using CHANGE.MTS for
disabling these signals in the translate tables.
DISK/PRINTER STATUS
The next three indicators are used to display open status foryour
printer and disk. You activate these devices with the Disk I/O key
command (OO) and the Printer I/O key command (OP). PRESS:O0
or PRESS OP.
OO 1= w o
2 = WS
3 = WC
4 = RO
5 = RS
6 = RC
When you press OR only a P appears on the status line to indicate
the printer is open and ready to receive data. PRESS: OP again to
closethe printer.
The Open commands activate the I/O channel for the device speci­
fied as well as actually opening the device. The Suspend com­
mands forthe disk files leave the channel open, but toggle actual
data transfer on and off. This toggle action means that you can con­
trol data reading and writing without having to constantly open and
close the device. We will experiment with these actions later, so for
now just PRESS: (RUN/STOP) to abort the I/O Command.
ALPHA SHIFT/LOCK
PRESS: (SHIFT)<UP-ARROW>. An S appears on the bottom line to
indicate that letters will be shifted to upper case without using the
shift or shift/lock keys. PRESS: (SHIFT)<UP-ARROW> again to
return to normal typing mode.
OPEN DiskWrite Channel
SUSPEND DiskWrite
CLOSE DiskWrite Channel
OPEN Disk Read Channel
SUSPEND Disk Read
CLOSE Disk Read Channel
QNrite Open)
OWrite Suspend)
OA/rite Close)
(Read Open)
(Read Suspend)
(Read Close)
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