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- ; M7AD-4.ASM -- Coleco Adam Sydmodem overlay file for MDM7xx. 03/06/87
- ;
- ; 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 places particular emphasis on using the Coleco Adam equip-
- ; ment with 8250 serial I/O. Much of the information contained here is
- ; not in the main file. If not using the Coleco Adam Sydmodem equipment
- ; some of the routines here will illustrate what you could do with your
- ; unit.
- ;
- ; Use the "SET" command to change baudrate when desired.
- ;
- ; Edit this file for your preferences then follow the "TO USE:" example
- ; shown below.
- ;
- ;
- ; TO USE: First edit this file filling in answers for your own
- ; equipment. Then assemble with ASM.COM or equivalent
- ; assembler. Then use DDT to overlay the the results
- ; of this program to the original .COM file:
- ;
- ; A>DDT MDM7xx.COM
- ; DDT VERS 2.2
- ; NEXT PC
- ; 4A00 0100
- ; -IM7AD-2.HEX (note the "I" command)
- ; -R ("R" loads in the .HEX file)
- ; NEXT PC
- ; 4A00 0000
- ; -G0 (return to CP/M)
- ; A>SAVE 73 MODEM7xx.COM (now have a modified .COM file)
- ;
- ; NOTE: If the MDM7XX file gets bigger the SAVE XX will be
- ; larger. Be sure to check the hex number under NEXT..
- ; = = = = = = = = = = = = = = = = = =
- ;
- ; 22/06/87 - fixed disconnect bug..................Syd Carter
- ; 12/05/87 - Somewhere around this date added a buffer for Adams slow screen
- ; scroll problem at 1200 baud speed.
- ; Syd Carter
- ; SAME GUY
- ; 06/03/87 - Converted H8-4A to M7AD-2 for the Adam Sydmodem..Syd Carter
- ; 03/16/84 - Added SMARTMODEM EQU so IF/ENDIF statements would work
- ; M7H8-4A work corectly. - Mike Allen
- ; 02/26/84 - Corrected to allow SMARTMODEM YES without overrunning
- ; M7H8-4 0400H in assembly. - Bill Wood
- ;
- ; 02/15/84 - Made default baud-rate follow the MSPEED equate.
- ; M7H8-3 - Rich Berg
- ;
- ; 12/11/83 - Restricted baud-rate selection for Hayes users.
- ; M7H8-2 changed signon for Hayes, tells default modem
- ; speed at signon. - Tom Bering
- ;
- ; 11/11/83 - Renamed to M7H8-1.ASM, no changes - Irv Hoff
- ; 10/03/82 - First version of this file
- ;
- ; = = = = = = = = = = = = = = = = =
- ;
- BDOS EQU 0005
- BUFLEN EQU 01fh
- WRITEPOS EQU 0FF20H
- READPOS EQU 0FF21H
- CBUFFER EQU 0FF22H
- BELL: EQU 07H ;bell
- CR: EQU 0DH ;carriage return
- ESC: EQU 1BH ;escape
- LF: EQU 0AH ;linefeed
- ;
- YES: EQU 0FFH
- NO: EQU 0
- ;
- ;
- ; Change the value at MODDATP if it does not match what you are using.
- ;
- MODDATP: EQU 050H ;data port for Sydmodem
- MODCTL1: EQU MODDATP+5 ;status port for Sydmodem
- MODRCVB: EQU 1 ;bit to test for received data
- MODRCFE: EQU 8 ;MODEM FRAMING ERROR
- MODRCVR: EQU 1 ;modem receive ready
- MODSNDB: EQU 20H ;bit to test for ready to send
- MODSNDR: EQU 20H ;modem send ready bit
- ;
- SMARTMODEM: EQU YES ;yes=HAYES SmartModem, no=non-Hayes
- ;put here to make 'IF-ENDIF' happy
- ;
- ORG 100H
- ;
- ; Change the clock speed if needed, to match your system
- ;
- DS 3 ;(for "JMP START" instruction)
- ;
- PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
- SMODEM: DB SMARTMODEM ;now prog & 'IF-ENDIF' happy 104H
- TOUCHPULSE: DB 'T' ;T=touch, P=pulse (Smartmodem-only) 105H
- CLOCK: DB 37 ;clock speed in MHz x .1, 25.5 MHz max. 106H
- ;20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc.
- MSPEED: DB 5 ;set to desired default. 1=300 2=450 107H
- ;4=600 5=1200 8=9600
- BYTDLY: DB 1 ;0=0 delay 1=10ms 5=50 ms - 9=90 ms 108H
- ;default time to send character in ter-
- ;minal mode file transfer for slow BBS.
- CRDLY: DB 1 ;0=0 delay 1=100 ms 5=500 ms - 9=900 ms 109H
- ;default time for extra wait after CRLF
- ;in terminal mode file transfer
- NOOFCOL: DB 2 ;number of DIR columns shown 10AH
- SETUPTST: DB YES ;yes=user-added Setup routine 10BH
- SCRNTEST: DB NO ;Cursor control routine 10CH
- ACKNAK: DB YES ;yes=resend a record after any non-ACK 10DH
- ;no=resend a record after a valid NAK
- BAKUPBYTE: DB NO ;yes=change any file same name to .BAK 10EH
- CRCDFLT: DB YES ;yes=default to CRC checking 10FH
- TOGGLECRC: DB YES ;yes=allow toggling of CRC to Checksum 110H
- CONVBKSP: DB YES ;yes=convert backspace to rub 111H
- TOGGLEBK: DB YES ;yes=allow toggling of bksp to rub 112H
- ADDLF: DB NO ;no=no LF after CR to send file in 113H
- ;terminal mode (added by remote echo)
- TOGGLELF: DB YES ;yes=allow toggling of LF after CR 114H
- TRANLOGON: DB YES ;yes=allow transmission of logon 115H
- ;write logon sequence at location LOGON
- SAVCCP: DB YES ;yes=do not overwrite CCP 116H
- LOCONEXTCHR: DB NO ;yes=local command if EXTCHR precedes 117H
- ;no=external command if EXTCHR precedes
- TOGGLELOC: DB YES ;yes=allow toggling of LOCONEXTCHR 118H
- LSTTST: DB YES ;yes=printer available on printer port 119H
- XOFFTST: DB YES ;yes=checks for XOFF from remote while 11AH
- ;sending a file in terminal mode
- XONWAIT: DB NO ;yes=wait for XON after CR while 11BH
- ;sending a file in terminal mode
- TOGXOFF: DB YES ;yes=allow toggling of XOFF checking 11CH
- IGNORCTL: DB YES ;yes=CTL-chars above ^M not displayed 11DH
- EXTRA1: DB 0 ;for future expansion 11EH
- EXTRA2: DB 0 ;for future expansion 11FH
- BRKCHR: DB '@'-40H ;^@ = Send a 300 ms. break tone 120H
- NOCONNCT: DB 'N'-40H ;^N = Disconnect from the phone line 121H
- LOGCHR: DB 'L'-40H ;^L = Send logon 122H
- LSTCHR: DB 'P'-40H ;^P = Toggle printer 123H
- UNSAVE: DB 'R'-40H ;^R = Close input text buffer 124H
- TRANCHR: DB 'T'-40H ;^T = Transmit file to remote 125H
- SAVECHR: DB 'Y'-40H ;^Y = Open input text buffer 126H
- EXTCHR: DB '^'-40H ;^^ = Send next character 127H
- ;
- ;
- DS 2 ; 128H
- ;
- IN$MODCTL1: JMP CHKBUF
- DS 7
- OUT$MODDATP: OUT MODDATP ! RET ;out modem data port 134H
- DS 7
- IN$MODDATP: JMP READBUF
- DS 7
- ANI$MODRCVB: ANI MODRCVB+MODRCFE ! RET ;bit to test for receive ready 148H
- CPI$MODRCVR: CPI MODRCVR ! RET ;value of rcv. bit when ready 14BH
- ANI$MODSNDB: ANI MODSNDB ! RET ;bit to test for send ready 14EH
- CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H
- DS 12 ;PMMI only calls 154H
- ;
- ;
- LOGONPTR: DW LOGON ;for user message. 160H
- DS 6 ; 162H
- JMP$GOODBYE: JMP GOODBYE ; 168H
- JMP$INITMOD: JMP INIT ;go to user written routine 16BH
- RET ! NOP ! NOP ;(by-passes PMMI routine) 16EH
- RET ! NOP ! NOP ;(by-passes PMMI routine) 171H
- RET ! NOP ! NOP ;(by-passes PMMI routine) 174H
- JMP$SETUPR: JMP SETUPR ; 177H
- JMP$SPCLMENU: JMP SPCLMENU ; 17AH
- JMP$SYSVER: JMP SYSVER ; 17DH
- JMP$BREAK: JMP SENDBRK ; 180H
- ;
- ;
- ; Do not change the following six lines.
- ;
- JMP$ILPRT: DS 3 ; 183H
- JMP$INBUF DS 3 ; 186H
- JMP$INLNCOMP: DS 3 ; 189H
- JMP$INMODEM DS 3 ; 18CH
- JMP$NXTSCRN: DS 3 ; 18FH
- JMP$TIMER DS 3 ; 192H
- ;
- ;
- ; The following clear the screen for the H19 or Sydmodem terminal
- ;
- CLREOS: CALL JMP$ILPRT ; 195H
- DB ESC,'J',0,0,0 ; 198H
- RET ; 19DH
- ;
- CLRSCRN: CALL JMP$ILPRT ; 19EH
- DB ESC,'E',0,0,0 ; 1A1H
- RET ; 1A6H
- ;
- ;
- SYSVER: CALL JMP$ILPRT ; 1A7H
- IF SMARTMODEM
- DB 'Version for Coleco Adam + Sydmodem 1200'
- ENDIF
- IF NOT SMARTMODEM
- DB 'Version for Sydmodem with 8250 I/O'
- ENDIF
- DB CR,LF,LF,'DEFAULT ',0
- CALL BAUD
- CALL JMP$ILPRT
- DB ' BAUD'
- DB CR,LF,0
- RET
- ;
- ;.....
- ;
- ;
- ;-----------------------------------------------------------------------
- ;
- ; NOTE: You can change the SYSVER message to be longer or shorter. The
- ; end of your last routine should terminate by 0400H (601 bytes
- ; available after start of SYSVER) if using the Hayes Smartmodem
- ; or by address 0C00H (2659 bytes) otherwise.
- ;
- ;-----------------------------------------------------------------------
- ;
- ; You can put in a message at this location which can be called up with
- ; CTL-O if TRANLOGON has been set TRUE. You can put in several lines if
- ; desired. End with a 0.
- ;
- LOGON: DB 'A content Adam user',CR,0
- ;.....
- ;
- ;
- ; This routine sends a 300 ms. break tone to reset some time-share
- ; computers.
- ;
- SENDBRK: MVI A,40H ;SET BREAK TONE
- OUT MODDATP+3
- JMP GOODBYE1 ;SEND A 300 MS. BREAK TONE
- ;
- ;.....
- ;
- ;
- ; This routine sends a 300 ms. break tone and sets DTR low for the same
- ; length of time to disconnect some modems such as the Bell 212A, etc.
- ;
- GOODBYE:
- DI
- XRA A
- OUT MODDATP+4 ;SET DTR AND RTS LOW
- MVI A,40H ;SET BREAK TONE
- OUT MODDATP+3
- ;
- GOODBYE1: MVI B,3 ;WAIT 300 MS.
- CALL JMP$TIMER
- MVI A,03H ;RESET TO NORMAL 8 BITS
- OUT MODDATP+3
- MVI A,09H
- OUT MODDATP+4 ;RESET DTR HIGH
- EI
- RET
- ;.....
- ;
- ;
- BAUD: LDA MSPEED
- CPI 1
- JNZ BAUD1
- CALL JMP$ILPRT
- DB '300',0
- RET
- BAUD1: CPI 2
- JNZ BAUD2
- CALL JMP$ILPRT
- DB '450',0
- RET
- BAUD2: CPI 3
- JNZ BAUD5
- CALL JMP$ILPRT
- DB '600',0
- RET
- BAUD5: CPI 5
- JNZ BAUD8
- CALL JMP$ILPRT
- DB '1200',0
- RET
- BAUD8: CALL JMP$ILPRT
- DB '9600',0
- RET
- ;
- ;
- ; The following is used to initialize the SYDMODEM 8250 I/O port
- ;
- INIT: LDA MSPEED
- CPI 1
- JZ OK300
- CPI 2
- JZ OK450
- CPI 3
- JZ OK600
- CPI 5
- JZ OK1200
- CPI 8
- JZ OK9600
- INITMOD: MVI A,5 ;default transfer speed to 1200 baud
- STA MSPEED
- DI ;turn off interrupts for init.
- MVI A,0C9H ;RETURN
- STA 0020H ;I HOPE THIS DOES IT.
- SET$INT LXI H,INT$RTN
- SHLD 0039H
- MVI A,0C3H
- STA 0038H
- MVI A,1
- OUT MODDATP+1 ;interrupt enable register
- MVI A,82H ;insure out of mode to set baud rate
- OUT MODDATP+3 ;line control register
- OUT MODDATP+3
- ;
- LSPSPD: MVI A,01H ;default 'LSP' speed for 300 baud
- OUT MODDATP ;register for 'LSP' speed if enabled
- ;
- MSPSPD: MVI A,0H ;default 'MSP' speed for 1200 baud
- OUT MODDATP+1 ;register for 'MSP' speed if enabled
- ;
- MVI A,03H ;8-level, 1 stop bit, no parity
- OUT MODDATP+3 ;line control register
- MVI A,09H ;set 'DTR' for proper modem output level
- OUT MODDATP+4 ;modem control register
- DB 0EDH,056H
- EI
- RET
- ;
- READBUF:
- DI
- PUSH D
- PUSH H
- LDA READPOS
- LXI H,CBUFFER
- MOV E,A
- MVI D,0
- DAD D
- ;INCREMENT READBUFFER POSITION
- INR A
- ANI BUFLEN
- STA READPOS
- ;PUT CHARACTER INTO A
- MOV A,M
- POP H
- POP D
- EI
- RET
- CHKBUF: PUSH H
- IN MODCTL1
- CALL ANI$MODSNDB
- CALL CPI$MODSNDR
- JZ THRE
- THRF: MVI A,0
- STA MODCTLBUF
- JMP INSPBUF
- THRE: STA MODCTLBUF
- INSPBUF:
- LXI H,WRITEPOS
- LDA READPOS
- CMP M
- JZ SETNOT1
- SET1: MVI A,1
- JMP EXIT$CHKBUF
- SETNOT1: MVI A,0
- EXIT$CHKBUF:
- LXI H,MODCTLBUF
- ADD M
- POP H
- RET
- INT$RTN DI
- PUSH PSW
- IN MODCTL1
- CALL ANI$MODRCVB
- CALL CPI$MODRCVR
- JNZ EXIT$INT
- ;VALID DATA
- PUSH H
- PUSH D
- LXI H,CBUFFER
- LDA WRITEPOS
- MOV E,A
- MVI D,0
- DAD D
- GET$CHAR: IN MODDATP
- MOV M,A
- ADJ$WRPOS: LDA WRITEPOS
- INR A
- ANI BUFLEN
- STA WRITEPOS
- POP D
- POP H
- EXIT$INT:
- IN MODDATP
- POP PSW
- EI
- DB 0EDH,04DH
- MODCTLBUF DB 0
- ;.....
- ;
- ;
- ; The following routine changes the baud rate for the SYDMODEM with the SET
- ; command.
- ;
- IF SMARTMODEM
- SETUPR: CALL JMP$ILPRT
- DB 'Select Baud Rate ( 300 1200 ) : ',0
- LXI D,BAUDBUF ;point to input buffer for INLNCOMP
- CALL JMP$INBUF
- LXI D,BAUDBUF+2 ;compare BAUDBUF+2 w/chars below
- ENDIF
- ;
- SETUPR1:
- CALL JMP$INLNCOMP
- DB '300',0
- JNC OK300 ;go if got match
- CALL JMP$INLNCOMP
- DB '450',0
- JNC OK450
- CALL JMP$INLNCOMP
- DB '1200',0
- JNC OK1200
- CALL JMP$ILPRT ;all matches failed - complain
- DB '++ INVALID BAUDRATE ++',CR,LF,BELL,0
- JMP SETUPR ;try again
- ;
- IF NOT SMARTMODEM
- SETUPR: CALL JMP$ILPRT
- DB 'SELECT BAUD RATE (300, 450, 600, 1200, 9600): ',0
- LXI D,BAUDBUF
- CALL JMP$INBUF
- LXI D,BAUDBUF+2
- CALL JMP$INLNCOMP
- DB '600',0
- JNC OK600
- CALL JMP$INLNCOMP
- DB '9600',0
- JNC OK9600
- JMP SETUPR1
- ENDIF
- ;
- OK300: MVI A,1 ;MSPEED 300 baud value
- LHLD BD300 ;get 300 baud parameters in HL
- JMP LOADBD ;go load them
- ;
- OK450: MVI A,2
- LHLD BD450
- JMP LOADBD
- ;
- OK600: MVI A,3
- LHLD BD600
- JMP LOADBD
- ;
- OK1200: MVI A,5
- LHLD BD1200
- JMP LOADBD
- ;
- OK9600: MVI A,8
- LHLD BD9600
- ;
- LOADBD: STA INITMOD+1 ;store speed to show transfer time
- MOV A,L ;get least significant baud rate byte
- STA LSPSPD+1 ;store in INITMOD
- MOV A,H ;get most signifcant baud rate byte
- STA MSPSPD+1 ;store in INITMOD
- JMP INITMOD ;reset SYDMODEM 8250
- ;
- ;
- ; Table of baud rate parameters
- ;
- BD300: DW 0180H
- BD450: DW 0100H
- BD600: DW 00C0H
- BD1200: DW 0060H
- BD9600: DW 000CH
- ;
- BAUDBUF: DB 10,0
- DS 10
- ;
- ;-----------------------------------------------------------------------
- ;
- ; This routine can be used for your equipment, be sure to end with RET.
- ; If using the Hayes Smartmodem this is unavailable without a special
- ; change.
- ;
- SPCLMENU: RET
- ;
- ;-----------------------------------------------------------------------
- ;
- ;
- ; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem)
- ; 0D00H (without Smartmodem)
- ;
- END