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M7SY-3.MSG
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Text File
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2000-06-30
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3KB
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68 lines
; M7SY-3.ASM - SANYO MBC-1000 computer overlay file for MDM722+. 2/17/84
;
; You will want to look this file over carefully. There are a number of
; options that you can use to configure the program to suit your taste.
;
; This file adapts the Sanyo MBC-1000 computer to the modem program.
;
;
; THIS MODIFICATION MAKES USE OF TIMER 2 ON THE 8253 TIMER IC (IC4)
; OF THE SERIAL I/O BOARD OF THE SANYO MBC-1000.
;
; To use this program, the serial I/O board must be modified as follows:
;
; 1. Cut etch from IC18 Pin 1 to JP2 Pin 8.
; 2. Install jumper from IC18 Pin 1 to IC4 Pin 18.
; 3. Install jumper from IC4 Pin 17 to JP2 Pin 8.
; 4. Install jumper from IC4 Pin 16 to IC4 Pin 14.
; 5. Move jumper strap to JP2 Pin 8 for programmable baud rate, other
; pins (1-7) can still be used for standard baud rate selections.
; 6. Hardware modification is now complete.
;
; *** THIS VERSION SETS UP THE USART FOR 8 BITS, NO PARITY, 1 STOP BIT ***
;
; Edit this file for your preferences then follow the "TO USE:" example
; shown below.
;
; Use the "SET" command to change the baudrate when desired. It starts
; out at 1200 baud when the program is first called up. Because of tem-
; perature and component variations, you mave have to alter the timing
; parameters in OK300 and OK1200, plus or minus 1 or 2 numbers, if CRC
; errors occur to frequently during transmission and reception.
;
; = = = = = = = = = = = = = = = = = =
;
; 02/17/84 - Renamed M7SY-3.ASM with improvements on 3 bugs. (1) Use
; MDM722 or later to eliminate the problems with Contol X when
; dialing. (2) Altered the parameter for 300 baud set for 0240h
; to 0241h to eliminate overwhelming CRC errors during Send.
; (3) Irv Hoff et al take note. For some reason, the Sanyo's
; lock up after a connect. When the message "hit any key to
; stop the bell" occurs, there is a subsequent CALL STAT and
; CALL KEYIN that gets the Sanyo's in a tight loop. Change
; the CALL STAT to a JMP RETURN (goes directly to the Terminal
; mode without waiting for a keystroke) to avoid the problem
; while waiting for someone more astute than me to fix the bug.
; I even tried patching in my specific BIOS addresses in a num-
; ber of places, figuring the problem was in INITADR--but to no
; avail.
;
; Bob Sandel Canton, MI (leave msg with TCBBS 1-313-846-6127
; or Keith Peterson's Royal Oak CP/M 1-313-759-6569 )
;
;
; 02/01/84 - Blended MDM711SN w the top of MDM719.ASM
; - Made Default Baud Rate 1200; Added back LOADBD to update MSPEED
; - ^P back on at LSTTST;changed LOGON back to ^L;set TOUCHPULSE
; - back to P=Pulse;added cosmetic remarks;BUFSIZ=XFRSIZ=16K
; - Bob Sandel Canton, MI
;
; 08/01/83 - Altered MDM711NE for the Sanyo MBC-1000
; computer using an external modem - Dave Hardy
;
; 07/01/83 - Revised for use with MDM711 - Irv Hoff
; 06/22/83 - Revised for use with MDM710 - Irv Hoff
;
; = = = = = = = = = = = = = = = = = =