DIGI_7.ASM Notes

This program is intended for use with a PIC-E which has the FRAM mod installed.
The steps from there are to edit, assemble and program the PIC-E.  Remember to 
disconnect the FRAM during programming.

Editing
This MUST be done.  The program comes with MYCALL as it's inserted call, so 
the whole network will see your boo-boo if you skip this step.
With a text editor, open the file RAMDIGI0.ASM and look for the following text
near the front of the program:

;------------------------------------------------------------
my_call_sign
        addwf   PCL,F
        dt      "MYCALL",0              ;must be 6 char long
;------------------------------------------------------------

Replace the MYCALL with the call or alias you wish to use.  Use capitol letters,
no more than 6 letters long and no SSID's.  There must be 6 characters in this
string, so short calls add spaces to make a total of 6 things between the "  ".
The zero afterwards is NOT the SSID.  It's for program use and can't be changed!

Example - chosen call is AF0W
        dt       "AF0W  ",0               ;must be 6 char long

Two spaces were added after the call to make a total of six characters.

The alias this program will respond to can be changed in the same manner.

;------------------------------------------------------------
my_aliases
        addwf   PCL,F
        dt      "WIDE  ",0              ;must be 6 char long
                                        ;and end w/0
;------------------------------------------------------------

The two modes of operation are selected by SW1 on the front panel.
Switch left is digipeater mode.  The unit will digi valid packets with an unused
WIDE in it's path.  The data in my_call_sign will be inserted in the outgoing
packet, replacing the WIDE in the path data.

Right is crossband repeat mode.  All packets will be rebroadcast as is. 
SW1 toggles the two modes Left=Digi Right=Repeater
Crossband repeat mode is mostly for testing purposes.  With the attached radio
set for tx disabled, you can judge reception / decoding by observing the ratio 
of packets heard to digis by the PIC-E.

After your done editing, assemble with MPASM and program with Picprog.
With Picprog, the front panel configuration settings are left empty because the
settings are in the program. 

After programming, reconnect the FRAM.  The "valid fix" LED should flash
briefly when power is first applied.  If it doesn't, recycle the power.  On rare
occasions, the PIC-E may have to be reprogrammed if the unit doesn't function.

As with all my software, this is beta testing.  However, because the PIC-E now
becomes an active part of the APRS network, I'd advise not to operate this
program unattended until your confident in it.  It's also important to have the
transmit deviation level set properly ( V1 ) for good copy.  Enjoy!

73 Mike  Berg  N0QBH