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Report error to the
TNC
Request external
directory
Output selected file
December 2001
FE1 mode is set.
If an error occurs at a peripheral device, the following block must be sent to
the TNC:
<SOH><Error text><ETB>BCC
Peripheral to TNC
<SOH>"Error"<ETB>BCC
The received error message is displayed on the TNC. To continue
7 7 7 7
Press the CE key
FE1 mode is set.
This protocol is not available in FE2 and EXT mode. In FE1 mode the following
'Escape' sequence is sent to request the external directory:
<DC3><ESC><DC1><0><SP><D><CR><LF>
The TNC expects the following input to this request:
xxxxxx<Code letters><Sectors><Name><P
1)
P = Protected (optional)
The first four lines ending in <CR><LF> are ignored. In subsequent lines
ending with <CR><LF>, the program name and, after any number of blank
characters, the number of sectors are stored.
If the character combination <FREE:> is detected, only a number — the
number of free sectors — will be read in.
The TNC requests the complete directory. The directory is saved and the files
of the selected type are displayed.
The peripheral device ends transmission with <EXT>. The TNC sends an
<EOT>.
TNC to peripheral
<SOH><K>Name<A><ETB>BCC
<STX>"1st line"<ETB>BCC
...
<STX>"last line"<ETB>BCC <DC1> <ACK>
<ETX><EOT>
Data Transmission Protocols
TNC to peripheral
<ACK><EOT>
1)
><CR><LF>
Peripheral to TNC
<SOH><K>Name<A><ETB>BCC
<ACK>
...
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