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m7lo-2.aqm
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M7LO-2.ASM
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Assembly Source File
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1985-02-09
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13KB
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396 lines
; M7LO-2.ASM -- Lobo Max-80 overlay file for MDM7xx. 06/01/84
;
; This overlay adapts the MDM7xx program to Max-80 computers from Lobo.
; N O T E - This overlay sets the default baud rate to 1200 and
; starts off using serial port A. It includes code to
; initialize the SIO so that XCONFIG need not be used.
; It also allows you to change the serial port used
; via the SET command. (fv)
;
; 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 an external modem that
; does not match one of the other special overlays.
;
; 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
; 4x00 0100
; -IM7LO-2.HEX (note the "I" command)
; -R ("R" loads in the .HEX file)
; NEXT PC
; 4x00 0000
; -G0 (return to CP/M)
; A>SAVE 73 MDM7xx.COM (now have a modified .COM file)
; ^
; This Value may vary depending upon vers of MDM7xx
;
; = = = = = = = = = = = = = = = = = =
;
; 06/01/84 - Cleaned up vers. nr. and Save - Dennis Recla
; 12/20/83 - Revised set baud routine & set default
; 1200 Baud. Also adds init coding - Fred Viles
; 11/11/83 - Renamed to M7LO-1.ASM, no changes - Irv Hoff
; 10/07/83 - Revised to include modem break - Steven J. Davidson
; 08/22/83 - Revised to work with Max-80 - Larry Richards
; 07/27/83 - Revised to work with MDM712 - Irv Hoff
; 04/04/83 - 1st version of M712GP - Irv Hoff
;
; = = = = = = = = = = = = = = = = =
;
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 following information to match your equipment
; For port B use 0F7E6 (PORT) and 0F7D4 (BAUDRP).
;
; For port A use:
;
PORT: EQU 0F7E4H ;MAX-80 data port
MODCTL1: EQU PORT+1 ;modem control port MAX-80
MODDATP: EQU PORT ;modem data in port
MODDATO: EQU PORT ;modem data out port
MODDCDB: EQU 4 ;carrier detect bit
MODDCDA: EQU 0 ;value when active
BAUDRP: EQU 0F7D0H ;baud rate port MAX-80
MODCTL2: EQU PORT+1 ;2nd modem control port
MODRCVB: EQU 1 ;bit to test for receive
MODRCVR: EQU 1 ;value when ready
MODSNDB: EQU 4 ;bit to test for send
MODSNDR: EQU 4 ;value when ready
;
ORG 100H
;
;
; Change the clock speed to suit your system
;
DS 3 ;(for "JMP START" instruction)
;
PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
SMARTMODEM: DB YES ;yes=HAYES Smartmodem, no=non-PMMI 104H
TOUCHPULSE: DB 'T' ;T=touch, P=pulse (Smartmodem-only) 105H
CLOCK: DB 50 ;clock speed in MHz x10, 25.5 MHz max. 106H
;20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc.
MSPEED: DB 5 ;0=110 1=300 2=450 3=600 4=710 5=1200 107H
;6=2400 7=4800 8=9600 9=19200 default
BYTDLY: DB 5 ;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 5 ;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 5 ;number of DIR columns shown 10AH
SETUPTST: DB YES ;yes=user-added Setup routine 10BH
SCRNTEST: DB YES ;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 NO ;yes=convert backspace to rub 111H
TOGGLEBK: DB NO ;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 NO ;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 NO ;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 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$MODCTL1: LDA MODCTL1 ! RET ;in modem control port MAX-80 12AH
DS 6
OUT$MODDATP: STA MODDATP ! RET ;out modem data port MAX-80 134H
DS 6
IN$MODDATP: LDA MODDATP ! RET ;in modem data port MAX-80 13EH
DS 6
ANI$MODRCVB: ANI MODRCVB ! 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$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H
DS 6 ; 156H
; The following are only used for PMMI
; routines in MDM7xx, but OUT$MODCTL1 is
; called from this overlay
OUT$MODCTL1: STA MODCTL1 ;out modem control port #1 15AH
OUT$MODCTL2: RET ! NOP ! NOP ;out modem control port #2 15DH
;
LOGONPTR: DW LOGON ;for user message. 160H
DS 6 ; 162H
JMP$GOODBYE: JMP GOODBYE ; 168H
JMP$INITMOD: JMP INITMOD ;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
;
;
; Routine to clear to end of screen.
;
;
CLREOS: CALL JMP$ILPRT ; 195H
DB 1BH,59H,0,0,0 ; 198H
RET ; 19DH
;
CLRSCRN: CALL JMP$ILPRT ; 19EH
DB 1BH,2AH,0,0,0 ; 1A1H
RET ; 1A6H
;
SYSVER: CALL JMP$ILPRT ; 1A7H
DB 'Version for Lobo Max-80, defaults to Serial '
DB 'port A at 1200 Baud',CR,LF,0
RET
;.....
;
;
;-----------------------------------------------------------------------
;
; NOTE: You can change the SYSVER message to be longer or shorter. The
; end of your last routine should terminate by 0400H (601 bytes
; available after start of SYSVER) if using the Hayes Smartmodem
; or by address 0C00H (2659 bytes) otherwise.
;
;-----------------------------------------------------------------------
;
; You can put in a message at this location which can be called up with
; CTL-O if TRANLOGON has been set TRUE. You can use several lines if
; desired. End with a 0.
;
LOGON: DB 'Hello from a Lobo MAX-80 computer',CR,LF,0
;.....
;
;
; This routine allows a 300 ms. break tone to be sent to reset some
; time-share computers.
;
SENDBRK: MVI A,5
CALL OUT$MODCTL1
MVI A,0F8H ;send a break tone
JMP GOODBYE1
;.....
;
;
; This routine sends a 300 ms. break tone and/or sets DTR low for the
; same length of time to disconnect some modems such as the Bell 212A,
; etc. The second entry (GOODBYE1) just sends the modem break, needed
; to "alert" some timesharing services.
;
;
GOODBYE: MVI A,5
CALL OUT$MODCTL1 ;send to the status port
MVI A,68H ;turn off dtr
;
GOODBYE1: CALL OUT$MODCTL1
MVI B,3 ;wait for 300 ms.
CALL JMP$TIMER
MVI A,5
CALL OUT$MODCTL1
MVI A,0E8H ;restore to normal, 8 bits, dtr on, etc.
CALL OUT$MODCTL1
RET
;.......
;
;
; --- Initialize Serial Port hardware and establish default baud rate.
;
INITMOD:
; Set the default baud rate
CALL SETDEFB
; Initialize the SIO
REINIT:
MVI A,01
CALL OUT$MODCTL1 ; SELECT REGISTER
MVI A,0 ; SET TO DISABLE INTERRUPTS ON THIS CHANNEL
CALL OUT$MODCTL1
MVI A,04H
CALL OUT$MODCTL1 ; SELECT REGISTER
MVI A,044H ; 16X CLOCK, 1 STOP BIT, NO PARITY
CALL OUT$MODCTL1
MVI A,03
CALL OUT$MODCTL1 ; SELECT REGISTER
MVI A,0C1H ; 8 BITS/CHAR., RX ENABLE, AUTO DISABLE
CALL OUT$MODCTL1
MVI A,05
CALL OUT$MODCTL1 ; SELECT REGISTER
MVI A,0EAH ; DTR, 8 BITS/CHAR., TX ENABLE, RTS
JMP OUT$MODCTL1
;
;.....
;
; --- Set modem speed via the SET command.---
; First get the desired baud rate from the user.
; NOTE: only the first 3 characters of the
; baud rate string entered by the user
; is used.
;
SETUPR:
LXI D,BAUDBUF ;POINT TO NEW INPUT BUFFER
CALL JMP$ILPRT
DB 'Input Baud Rate (300, 1200, 9600, etc - space for 1200)',CR,LF
DB ' or Port (A or B) or both (A300, B19200, etc): ',0
CALL JMP$INBUF
LXI H,BAUDBUF+2 ; Point to users entry
MOV A,M ; Get first character
CPI 20h ; Space?
JZ SETDEFB ; Yes, go set default baud rate
STA APORT ; Store character in msg just in case
SUI '0'
CPI 10 ; Digit?
JC FINDBD ; Yes, go find baud rate in table
SUI 17
CPI 2 ; 'A' or 'B'?
JNC SETERR ; No, invalid entry
;
; Reset the Serial port in use
;
RLC ; 'A' = 0, 'B' = 2
PUSH PSW ; Save it
ADI 0E4h ; Data port address low byte
STA IN$MODDATP+1
STA OUT$MODDATP+1
INR A ; Control Port address low byte
STA IN$MODCTL1+1
STA OUT$MODCTL1+1
POP PSW ; Restore 0 or 2
RLC ; Make 0 or 4
ADI 0D0h ; Baud rate port address low byte
STA BDOUT+1
CALL REINIT ; Re-do initialization for new port
CALL JMP$ILPRT
DB CR,LF,'Serial port '
APORT: DS 1
DB ' is now in use.',CR,LF,0
;
LXI H,BAUDBUF+3 ; Point to next byte in user entry
MOV A,M ; Get it
SUI '0'
CPI 10 ; Digit?
RNC ; No, We are all done
; Yes, fall thru to set the baud rate
FINDBD: SHLD PTR ; Save ptr to user entry
LXI D,BDTAB ; Point to baud rate table
MVI B,NTAB ; Get # of entries to search thru
; TOP OF LOOP - scanning baud rate table
SLOOP: LHLD PTR ; Get ptr to users entry
PUSH D ; Save the table pointer
;
MVI C,3 ; Compare 3 characters of string
SLOOP1: LDAX D ; Get next character from table entry
CMP M ; Match user string?
JNZ X1 ; No, so try next table entry
INX H ; Yes, so check next character if any
INX D
DCR C ;
JNZ SLOOP1 ; Loop to test all 3 characters
;
X1: POP H ; Restore pointer to current table entry
JZ SETUP ; If match, set baud rate and return
LXI D,BWDS+4
DAD D ; Point to the next table entry
XCHG
DCR B ; Count down # of table entries
JNZ SLOOP ; Loop to test next entry if any
;
SETERR: CALL JMP$ILPRT ; No match found in table, tell operator
DB '++ Incorrect entry ++',CR,LF,BELL,0
JMP SETUPR ; Give user another try
;
; Set up the baud rate. HL points to the command string
;
SETDEFB: ; This entry sets the baud rate to the default
LXI D,DEFBD+3
;
SETUP: LDAX D ; Get new MSPEED value
STA MSPEED ; Store it
; Loop sending baud rate control bytes
MVI C,BWDS ; Init loop counter
SULOOP: INX D ; Increment control string pointer
LDAX D ; Get next control byte
BDOUT: STA BAUDRP ; Send it to the baud rate port
DCR C ; Decrement the loop conter
JNZ SULOOP ; Loop til done
RET
;
; --- BAUDRATE TABLE FOR CCS 2719 BAUD RATE GENERATOR ---
;
BWDS EQU 1 ; # OF BYTES TO SEND TO BAUD RATE CHIP
BDTAB:
DB '110',0,2
DB '300',1,5
DB '600',3,6
DEFBD: DB '120',5,7 ; 1200 BAUD (default)
DB '240',6,0Ah ; 2400
DB '480',7,0Ch ; 4800
DB '960',8,0Eh ; 9600
DB '192',9,0Fh ; 19200
;
ENTAB EQU $
;
NTAB EQU (ENTAB-BDTAB)/(BWDS+4) ; # OF TABLE ENTRYS
;
PTR: DS 2
;
BAUDBUF: DB 10,0
DS 10
;.....
;
;
; If using the Hayes Smartmodem this is unavailable without a special
; change.
;
SPCLMENU: RET
;
;
; NOTE: Must terminate prior to 0400H (with Smartmodem)
;