; 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 ; ; = = = = = = = = = = = = = = = = = =