*********************************************************************
* *
* README.XMT XMITR PROGRAM *
* *
* If you have any problems with or questions about XMT *
* please contact: *
* *
* Michael D. Lampi *
* McDonnell Douglas Corporation *
* mail location 35-44 *
* 3855 Lakewood Blvd. *
* Long Beach, Cal. 90846 *
* telephone (213) 593 - 2029 *
* *
*********************************************************************

XMTBLD.CMD Command file to assemble & task build XMT

ABREAK.FTN
ASCII8.FTN
BREAK.FTN
CLSFIL.FTN
COPYMD.FTN
CTLCHR.FTN
CTLSUB.FTN
DELAY.FTN
ECHO.FTN
ENQUE.FTN
FORMAT.FTN
HELP.FTN
INPFIL.FTN
OPNGET.FTN
OPNPUT.FTN
OUTFIL.FTN
PROMPT.FTN
READST.FTN
REDEF.FTN
SETUP.FTN
STATUS.FTN
STOPIT.FTN
XMITR.FTN
GETSQ.MAC (Just as written in the FORTRAN-IV User's Guide)
ICNT.MAC

The following MACRO-11 subroutines may have to be tailored
to correspond to your respective systems.

ITTOUR.MAC
TTYOUT.MAC
TWAIT.MAC

This version of XMT has been modified by Glenn Everhart to run on
IAS and to have lower CPU overhead. Its IAS code is (I hope
fully) conditioned by I$$AS, so it may work on 11M systems too
(where some considerable effort to reduce its overhead was
made), but no guarantees. Use the original submission if you
can't get this to work on 11M, or retailor stuff yourself.
All tests were done with the full duplex drivers. In IAS you
must set the terminal you'll communicate over as /FULLDUPLEX
and as /BINARY yourself, using commands like

PDS>>SET /UIC=[1,1]
PDS>>TER TTn:/FULLDUPLEX
PDS>>TER TTn:/BINARY
PDS>>TER TTn:/WIDTH:132
to get it set up. That terminal will NOT be logged in in normal
use. XMT will set your terminal fullduplex and binary, so be
prepared to set it back if you have a crash. You'll have to
experiment with prompted/promptless transmission, duplexing,
and other toggles a bit to get things working most likely.


For a bit more background, this program was originally designed
to run in an RT-11 environment using DL-11W's for communication.
It was then transported over to RSX-11M 3.1 using DZ-11's and
212 modems. No loss of information was found at speeds of 300
baud when talking with ANY system, but PDP-11/70's were able
to out-talk our poor 11/34 at 1200 baud and cause us to lose
information, but usually only when XMT was checkpointed for
extended lenghts of time. Under RSX-11M v3.2 a few features
were added to the ITTOUR.MAC and INPTT1.MAC subroutines to make
use of a few v3.2 TT: driver features, such as full-duplex
and 8-bit characters. This program has been successful in
receiving and transmitting at rates up to 4800 baud on an
11/34 system (under v3.1) with no data loss. Under v3.2
there should be no loss of data at any speed.