MMODEM - Xmodem file transfer.

doc/_info_/mmodem.order

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+MMODEM is the ITS companion to the CP/M 'MODEM' file transfer program.
+ 
+Usage:
+:MMODEM xx filename
+ 
+where xx is one of:
+S - send file.  MMODEM figures out whether it is an ascii or a COM file
+SA - send ascii file
+SC - send COM file
+SH - send HEX file. The file is 'comified' in core before being sent
+SM - send MACN80 output file. The file is 'comified' in core before being sent
+R - receive file.  MMODEM guesses format (ascii/COM) by file type, or asks you
+RA - receive ascii file
+RC - receive COM file
+RZ - receive ascii file containing ^Z's. Normally ^Z is treated as end of file
+     With this option, only trailing ^Zs are ignored.
+RAC,RCC,RZC - like RA,RC,RZ but using CRC's instead of checksums.
+ 
+Also available:
+SB - send random binary file (4 8-bit bytes per PDP-10 word, left-justified).
+RB - receive random binary file.
+RBC - receive random binary file using CRC's instead of checksums.
+Note that the non-ascii files on the CPM; directory are *not* random binary
+files, they are COM files.  Use SC/RC for those.
+ 
+Mail bugs, questions, feature requests to BUG-MMODEM@MC.
+ 

doc/programs.md

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 - MINSKY TRON, display hack translated from the PDP-1.
 - MLDEV/MLSLV, allows access to remote systems as devices (e.g. DB:).
 - MLIFE, Mike Speciner's Conway Life.
+- MMODEM, Xmodem file transfer.
 - MODEMS, modems dragon.
 - MONIT, lightweight ATSIGN HACTRN replacement without debugging support.
 - MSEND, send to many users.