FDSZ.EXE  (Prototype)  FOSSIL flavor of DSZ.EXE

The title says it all.  More or less.

This version uses INT14h 0-3 subfunctions.  Unfortunately these
are the only standardized subfunctions.  Almost standardized.

The com port and its parameters should be set up before calling
FDSZ.  FDSZ will not initialize a Fossil driver.  Why?  Because
FDSZ is meant to be called from another program, and it must leave
the fossil port in the same mode FDSZ found it.  Unfortunately
there apparently is no way for FDSZ to check the status of the
FOSSIL port without losing the port's current settings.  So,
FDSZ must assume the port is already properly set up for FOSSIL
operation before it is called.

If testing FDSZ "stand alone", and you are using X00, use the XU
program to activate FOSSIL on the desired port.  Note that COM1
corresponds to port 0 on XU.
	xu port:1:on
	fdsz 2 d t
Note that XU does not have a command to set flow control.  Your
main program should set the com port parameters.

FDSZ can set the speed with the "speed" command, but this is not
too useful because the more interesting speeds are not standardized.
Since FDSZ is meant to be called from another program, you shouldn't
need to use the FDSZ speed command anyway.

Depending on the BIOS/FOSSIL version, FDSZ will not operate unless
Data Set Ready (DSR) is active.

FDSZ will not work well with the standard brain damaged BIOS support.
You need to have FOSSIL or something compatible running.

There is considerable overhead using the INT14h interface.  Why else
develop the Pentium?

DSZ commands related to direct serial port access are not
supported.  These include the F, D, handshake, and off commands,
(The d (lower case) command is supported.) P, S, and Y
parameters.  The port command takes a number only.

Otherwise, functionality is similar to DSZ.EXE.

Suggested FDSZ command line for Digiboard:

fdsz 5 t		-- for interactive operation
fdsz 5 sz foo.baz

The "5" is the port number.  5 is the first port on a two-port
Digiboard PC/2E.  Sending the FCC AM database from a Unix
machine with a 115kb Comtrol RocketPort port to a Pentium with
Digiboard I got about 220kb/sec throughput using ZMODEM
compression.  I guarantee you can't match this with an XT.

  Chuck Forsberg WA7KGX       caf@omen.COM      503-621-3406
Author of YMODEM, ZMODEM, Professional-YAM, ZCOMM, GSZ and DSZ
   Omen Technology Inc      "The High Reliability Software"
TeleGodzilla BBS: 503-621-3746     FAX:-3735    CIS:70007,2304
     Genie:CAF  17505-V NW Sauvie IS RD Portland OR 97231