Dave Lamont zl2amd <dlamont@central.co.nz> and I have been experimenting
with the "PacComm TNC for DSP-93". We have discovered two improvements
that bring the "PacComm TNC for DSP-93" into a useable state.

These have been mentioned here before but I'll summarize again.


1.
To improve the throughput from the DSP-93 through the "PacComm TNC for
DSP-93" in PASSTHRU mode, you may wish to slow the DSP-93 serial I/O down
to 9600 bps. This is easily done by changing the crystal on the DSP-93
analog board (board 2) to half its original value. Just pull the original
crystal and install a 2.4576 MHz crystal (about $5).

Set the baud rates for the "PacComm TNC for DSP-93" to 9600 for both
Terminal and DSP Serial. You will also have to change DSPLOAD.CFG.


2.
To improve the throughput from the "PacComm TNC for DSP-93" to the DSP-93
in PASSTHRU mode using DSPLOAD, a pacing parameter has been added to the
DSPLOAD command line.

The command instructions are now DSPLOAD FILENAME DELAY
where DELAY is in milliseconds.

           i.e. dspload psk93r2w 100

The pacing parameter DELAY adds a delay after each .OBJ file line to allow
the 
"PacComm TNC for DSP-93" to catch up. Use the minimum value for DELAY that
works with your system.

A companion program TNC.EXE is also provided and may be found in the .ZIP
file. Execute TNC.EXE without parameters for syntax.



Please report all problems and successes to the dsp-93@tapr.org mailist.