PLK@mit-mc.arpa (05/10/83)
From: Paul L. Kelley <PLK@mit-mc.arpa> A new version of Ward Christensen's MODEM program is contained in the library file MC:CPM;MODEM 901LBR. The files must be unloaded from the library with LU and the text files unsqueezed with USQ. The source files have been split into modules linkable with Christensen's LASM. LASM and MLOAD (an improved hex loader by Ron Fowler) are also included in the library. Documentation files are also provided including a 40 K user file. Support is provided for the following UARTs and micros: 8250 - Heath H89/90/8, Zenith Z89/90 8251 - Intertec SuperBrain, DEC VT180 Z80-SIO - Big Board, Xerox 820, Kaypro II, Micom 2001 The files are setup so the user can change baud rate, word length, parity, and number of stop bits. The exception this is the VT180 which does not have the capability of baud rate setting under CPU control. The following is from the history file. 05/05/83 Revised program as follows: 1. Corrected erroneous attempt to do multifile transfers from command line, 2. Put telephone number library in START.ASM and the tele- phone library display routines in MAIN.ASM, 3. Made minor changes in setup routine for H89, 4. Added support for several new systems. P.L.Kelley 04/25/83 Revised program as follows: 1. Combined MODEM796.ASM and MODEM796.LIB and divided the resulting file into linked modules for use with the public domain assembler, LASM. This has the following advantages: a. gives short, logically organized, easily edited modules, b. minimal changes to a single module prior to assembly should allow most users to generate a working program for their system, c. avoids use of MAC, which some users may not own, 2. Eliminated PMMI-only routines; this shortens the program considerably and results in most of the modules being system independent, 3. Introduced standard locations in low memory for user configurable tables and system dependent code, 4. Used many of the non-PMMI routines in MDM700-707 (see below), 5. Made the following enhancements, a. added toggle for sending/not sending end-of-file marker in terminal mode text file output, b. added toggle for sending/not sending linefeed after carriage return in terminal mode file output, this allows use with either a mainframe or a micro which is capturing the file, c. added toggle for waiting/not waiting until character echoed in terminal mode file output, d. added separate menu for terminal mode file output flow control commands, e. increased from 1 to 10 the number of user defined strings which can be transmitted in terminal mode, and added command for displaying list of strings (thanks to E. O. Stork for this idea), f. added routines to reset word length, stop bits, and parity to H89 baud rate resetting routine, and included information on settings in current parameter information screen; 7 bit text transfers are now possible. It should be relatively simple to modify these routines for another computer, g. added routine to disconnect modem from telephone line if computer and modem allow this, h. added routine to provide carrier detect status information, i. added message on returning to terminal mode after Q (quiet) file transfer. 6. Used LU to put the ASM, DOC and HIS files together with LASM and MLOAD into a LIB file with the name MODEM900.LBR. Skipped the 8.xx version number sequence as that sequence has already been used for a system specific version. P. L. Kelley