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HamCall (April 1991)
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HAMCALL CD-ROM (Buckmaster)(April 1991).BIN
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APPLS.DOC
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1989-07-09
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Application Support for G8BPQ Switch
Until now, the switch has supported connects to two sets of application
programs. The first is the BBS, obtained by connecting to the BBS call/alias,
or connecting to the switch end entering BBS. The second is the SYSOP,
obtained by entering the 'C' command without a callsign from the switch. The
commands CONOK ON or HOSTOK ON had to be sent by the program, to indicate
that the TNC port was available. From Version 3.20, up to 8 applications
are supported. The first two are as above, the third is reserved for remote
SYSOP access, and the other 5 are available for your own applications. The
list of application names is given in the APPLICATIONS= param in the config
file, and is a string of up to 8 names of up to 12 chars each, separated by
commas. The names will be listed to the user, along with the normal commands
in the 'available commands' prompt, obtained by entering ?. The user enters
the Application name to connect to it, in the same way as he can enter BBS to
connect to the BBS. Nothe that, for the moment at least, these additional
applications do not have there own callsign/alias, so must be accessed via
the switch. (but you could rename the first application if you really want
to!).
The application program must use the COMBIOS interface to a normal (ie not
host mode) TNC. If you want more than one concurrent user, you can either
run multiple copies, or write the program to support several users. The
program must send two commands to the virtual TNC:-
APPL $NN
Where NN has a bit set corresponding to the appl. number. eg $01 for BBS,
$08 for 4th appl. More than one can be set, allowing the port to support
more than one application, but as the program has no way of knowing which
one the user entered, it isn much help. Note the the default is $01, so
existing BBS applications will still work.
CONOK ON
To indicate port is ready to accept connects.
I hope to have the 'REMOTE SYSOP' system available in a few weeks, and will
write a skeleton example application program as soon as I find the time. In
the meantime I would appreciate and comments and suggestions for improvement
that you may have.