This is a document about XMODEM.FOR and associated files for the VAX. By J. James (Jim) Belonis II Physics Hall FM-15 University of Washington Seattle, Washington 98195 The files in the package are: XMODEM.FQR sqeezed XMODEM.FOR, equivalent to XMODEM 5.0: binary files, with checksum or CRC, most timeouts, no BATCH, in VAX Fortran (special I/O dependency encapsulated in two subroutines so it should be translatable to other Fortrans). works up to 9600 baud on a moderately loaded VAX 11/780 running VMS version 2.0 (commented out portions allow cleaner program for version 3.0 and up) TOXMOD.FQR squeezed TOXMOD.FOR converts VAX text file (variable length records with no CRLF) into CP/M compatible file for transfer by XMODEM (fixed length 128 byte records with CRLF at ends of lines). FROMXMOD.FQR sqeezed FROMXMOD.FOR similarly converts CP/M file from the form received by XMODEM.FOR to a VAX text file. XMODEM.HQP a VAX HELP file about the three programs. CPM.CQM a VAX command procedure file defining XMODEM,TOXMOD,FROMXMOD as foreign commands. QIO.DCK an INCLUDE file for XMODEM.FOR defining a COMMON area. The file format produced by XMODEM is 128 character fixed length records. These files may PRINT and TYPE reasonably, but to edit them on your VAX they must be converted to ordinary VAX text files by FROMXMOD. If you forget which files have been converted by TOXMOD or FORMXMOD, just do a DIRECTORY/FULL to see the file format on the VAX. Similarly XMODEM will only send text files reasonably if they have been converted to CP/M form by TOXMOD, otherwise the FORTRAN input statements in XMODEM will append lots of blanks to each line of text and no carriage returns will be sent. A version of MODEM7 for the VAX is also in the works. Watch for it in the late spring of 1983. XMODEM is also available from the LOCKE COMPUTER CENTER at the UNIVERSITY OF WASHINGTON for the PDP-10. If anyone hears of XMODEM or MODEM7 available for other MAINFRAMES especially Control Data CYBER or Digital Equipment Company PDP-10, PDP-11, VAX I would like to hear about them. Send mail to me at the above address.
