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Irv Hoff has added 1k packets and YMODEM transfers to the KMD and
IMP series programs, which replace the XMODEM and MODEM7/MDM7xx
series respectively. Overlays are available for a wide variety of
CP/M systems.
Many other programs, including MEX-PLUS and Crosstalk Mark IV also
support some of YMODEM's features.
Questions about YMODEM, the Professional-YAM communications program,
and requests for evaluation copies may be directed to:
Chuck Forsberg
Omen Technology Inc
17505-V Sauvie Island Road
Portland Oregon 97231
VOICE: 503-621-3406 :VOICE
Modem (TeleGodzilla): 503-621-3746
Usenet: ...!tektronix!reed!omen!caf
Compuserve: 70007,2304
Source: TCE022
22. AAAACCCCKKKKNNNNOOOOWWWWLLLLEEEEDDDDGGGGMMMMEEEENNNNTTTTSSSS
ZMODEM was developed _f_o_r _t_h_e _p_u_b_l_i_c _d_o_m_a_i_n under a Telenet contract.
The ZMODEM protocol descriptions and the Unix rz/sz program source
code are public domain. No licensing, trademark, or copyright
restrictions apply to the use of the protocol, the Unix rz/sz source
code and the _Z_M_O_D_E_M name.
Encouragement and suggestions by Thomas Buck, Ward Christensen, Earl
Hall, Irv Hoff, Stuart Mathison, and John Wales, are gratefully
acknowledged. 32 bit CRC code courtesy Gary S. Brown.
23. RRRREEEELLLLAAAATTTTEEEEDDDD FFFFIIIILLLLEEEESSSS
The following files may be useful while studying this document:
YYYYMMMMOOOODDDDEEEEMMMM....DDDDOOOOCCCC Describes the XMODEM, XMODEM-1k, and YMODEM batch file
transfer protocols. This file is available on TeleGodzilla
as YMODEM.DQC.
Chapter 23 Rev 10-27-87 Typeset 10-27-87 45
Chapter 23 ZMODEM Protocol 46
zzzzmmmmooooddddeeeemmmm....hhhh Definitions for ZMODEM manifest constants
rrrrzzzz....cccc,,,, sssszzzz....cccc,,,, rrrrbbbbssssbbbb....cccc Unix source code for operating ZMODEM programs.
rrrrzzzz....1111,,,, sssszzzz....1111 Manual pages for rz and sz (Troff sources).
zzzzmmmm....cccc Operating system independent low level ZMODEM subroutines.
mmmmiiiinnnniiiirrrrbbbb....cccc A YMODEM bootstrap program, 178 lines.
RRRRZZZZSSSSZZZZ....ZZZZOOOOOOOO,,,,rrrrzzzzsssszzzz....aaaarrrrcccc Contain the C source code and manual pages listed
above, plus a ZCOMM script to upload minirb.c to a Unix or
Xenix system, compile it, and use the program to upload the
ZMODEM source files with error checking.
DDDDSSSSZZZZ....ZZZZOOOOOOOO,,,,ddddsssszzzz....aaaarrrrcccc Contains DSZ.COM, a shareware X/Y/ZMODEM subprogram,
DESQview "pif" files for background operation in minimum
memory, and DSZ.DOC.
ZZZZCCCCOOOOMMMMMMMM****....AAAARRRRCCCC Archive files for ZCOMM, a powerful shareware
communications program.