;MXO-II13.ASM-- InterSysytems VIO and H-Z19/29/49 file for MEX. 06/02/85 ; ; This is a MEX overlay used to configure MEX for a specific hardware set-up. ; This file places particular emphasis on using the InterSystems VIO with ; the 2651 PCI and the H-Z19. Much of the information contained here is ; not in the main file. If you're not using the above named equipment, ; some of the routines here may give you some hints for your MEX patch. ; ; Use the "SET" command to change baud rate 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 MLOAD to overlay the the results ; of this program to the original .COM file. ; ; ; = = = = = = = = = = = = = = = = = = ; 06/02/85 - Added J-Cat dial/hangup routines - Len Moskowitz ; 06/08/84 - Changed to MEX labels MXO-II12.ASM - Len Moskowitz ; 06/04/84 - Changed to VIO/Z19 - MXO-II11.ASM - Len Moskowitz ; 05/23/84 - Corrected clear-screen error - Biff Bueffel ; 05/19/84 - Converted for MEX10 - MXO-H811.ASM - Biff Bueffel ; 11/11/83 - Renamed to M7H8-1.ASM, no changes - Irv Hoff ; 07/27/83 - Renamed to work with MDM712 - Irv Hoff ; 07/01/83 - Revised to work with MDM711 - Irv Hoff ; 06/22/83 - Revised to work with MDM710 - Irv Hoff ; 05/27/83 - Revised to work with MDM709 - Irv Hoff ; 05/15/83 - Revised to work with MDM708 - Irv Hoff ; 04/17/83 - Revised to work with MDM707 - Irv Hoff ; 04/04/83 - Updated to work with MDM706 - Irv Hoff ; 02/27/83 - Updated to work with MDM705 - Irv Hoff ; 02/17/83 - Updated to work with MDM704 - Irv Hoff ; 02/07/83 - Updated to work with MDM703 - Irv Hoff ; 01/27/83 - Updated to work with MDM702 - Irv Hoff ; 01/10/83 - Updated to work with MDM701 - Irv Hoff ; 10/03/82 - First version of this file ; ; = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; ; VIO base address and port offsets. Set PORT to either PORTA or PORTB ; VIOBASE EQU 0 ;set this to the base address of ; your VIO board PORTA EQU 0 ;serial port A is at base+0 PORTB EQU 4 ;serial port B is at base+4 PORT EQU VIOBASE+PORTB ;We use serial port B for the modem ; ; MODDAT: EQU PORT ;data port for VIO MODCT1: EQU PORT+1 ;status port for VIO MDRCVB: EQU 02 ;bit to test for received data MDRCVR: EQU 02 ;modem receive ready MDSNDB: EQU 01 ;bit to test for ready to send MDSNDR: EQU 01 ;modem send ready bit ; ; MEX service processor stuff. Use instead of BDOS calls. More detail ; in PM overlay. ; MEX EQU 0D00H ;address of the service processor INMDM EQU 255 ;get char from port to A, CY=no more in 100 ms TIMER EQU 254 ;delay 100ms * reg B TMDINP EQU 253 ;B=# secs to wait for char, cy=no char CHEKCC EQU 252 ;check for ^C from KBD, Z=present SNNDRDY EQU 251 ;test for modem-send ready RCVRDY EQU 250 ;test for modem-receive ready SNDCHR EQU 249 ;send a character to the modem (after sndrdy) RCVCHR EQU 248 ;recv a char from modem (after rcvrdy) LOOKUP EQU 247 ;table search: see CMDTBL comments for info PARSFN EQU 246 ;parse filename from input stream BDPARS EQU 245 ;parse baud-rate from input stream SBLANK EQU 244 ;scan input stream to next non-blank EVALA EQU 243 ;evaluate numeric from input stream LKAHED EQU 242 ;get nxt char w/o removing from input GNC EQU 241 ;get char from input, cy=1 if none ILP EQU 240 ;inline print DECOUT EQU 239 ;decimal output PRBAUD EQU 238 ;print baud rate ; PRINT EQU 9 ;BDOS print-string function ; ; modem control equates ; offonhookport equ 08h ;I/O port used to command OHK signal onhook equ 0feh ;mask used reset OHK to 0. All bits set to 1 ; except the bit that controls OHK offhook equ 01h ;mask used to set OHK to 1 milliconstant equ 165 ;delay constant for millisecond delay loop. ; correct for 4 megaHertz Z80A. halve it ; for 2 megaHertz cpu or adjust per your ; cpu requirements. a good way to check how ; accurate it is, is to set the three second ; delay, after the phone is taken off hook, ; to 60 seconds and time it carefully, and then ; adjust this constant. cardetectport equ 05h ;I/O port used to read CAR signal carriermask equ 80h ;mask used to check carrier detect bit. if this ; bit is a zero, the carrier was detected. length equ 25 ;the maximum number of digits allowed in a ; phone number plus a null portdefault equ 00h ;you might use a port that controls other ; things too. since we don't want to disturb ; them, store the default setting for the port, ; with OHK set to zero, here dialtonewait equ 3 ;number of seconds we wait for a dial tone carrierwait equ 15 ;number of seconds we wait for a carrier ; This section has logicals. true equ 0ffh ;true false equ 0 ;false ; ORG 100H ; ; Change the clock speed if needed, to match your system ; DS 3 ;(for "JMP START" instruction) ; PMODEM: DB NO ;not used by MEX 103H SMODEM: DB NO ;not used by MEX 104H TPULSE: DB 'T' ;T=touch, P=pulse (Smartmodem-only) 105H CLOCK: DB 40 ;clock speed in MHz x10, 25.5 MHz max. 106H ;20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc. MSPEED: DB 1 ;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 modNe file transfer COLUMS: DB 5 ;number of DIR columns shown 10AH SETFL: DB YES ;yes=user-added Setup routine 10BH SCRTST: DB YES ;Cursor control routine 10CH DB YES ;spare BAKFLG: DB NO ;yes=change any file same name to .BAK 10EH CRCDFL: DB YES ;yes=default to CRC checking 10FH ;no=default to Checksum checking TOGCRC: DB YES ;yes=allow toggling of CRC to Checksum 110H CVTBS: DB NO ;yes=convert backspace to rub 111H TOGLBK: 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) TOGLF: DB YES ;yes=allow toggling of LF after CR 114H TRNLOG: DB NO ;yes=allow transmission of logon 115H ;write logon sequence at location LOGON SAVCCP: DB YES ;yes=do not overwrite CCP 116H LOCNXT: DB NO ;yes=local command if EXTCHR precedes 117H ;no=external command if EXTCHR precedes TOGLOC: DB YES ;yes=allow toggling of LOCONEXTCHR 118H LSTTST: DB NO ;yes=printer available on printer port 119H XOFTST: DB YES ;yes=checks for XOFF from remote while 11AH ;sending a file in terminal mode XONWT: DB NO ;yes=wait for XON after CR while 11BH ;sending a file in terminal mode TOGXOF: DB YES ;yes=allow toggling of XOFF checking 11CH IGNCTL: 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 NOCONN: 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 UNSVCH: DB 'R'-40H ;^R = Close input text buffer 124H TRNCHR: DB 'T'-40H ;^T = Transmit file to remote 125H SAVCHR: DB 'Y'-40H ;^Y = Open input text buffer 126H EXTCHR: DB '^'-40H ;^^ = Send next character 127H ; ; PRATE: DS 2 ;PMMI equates (see PMMI overlay) 128H ; INCTL1: IN MODCT1 ;in modem control port 12AH RET DS 7 ;spares OTDATA: OUT MODDAT ;out modem data port 134H RET DS 7 INPORT: IN MODDAT ;in modem data port 13EH RET DS 7 MASKR: ANI MDRCVB ! RET ;bit to test for receive ready 148H TESTR: CPI MDRCVR ! RET ;value of rcv. bit when ready 14BH MASKS: ANI MDSNDB ! RET ;bit to test for send ready 14EH TESTS: CPI MDSNDR ! RET ;value of send bit when ready 151H DS 12 ;unused 154H ; ; DS 2 ;Not used by MEX 160H DIALV JMP DIAL ;Dials digit 162H DISCV JMP HANGUP ;Disconnects modem 165H GOODBV: JMP GOODBYE ;called before exit to CP/M 168H INMODV: JMP INITMOD ;go to user written routine 16BH NEWBDV: JMP NEWBAUD ;Change baudrate 16EH NOPARV: DS 3 ;set modem for no-parity 171H PARITV: DS 3 ;set modem parity 174H SETUPV: JMP SETCMD ;overlay implemented function 177H SPMENV: DS 3 ;Not used by MEX 17AH VERSNV: JMP SYSVER ;overlay's voice in sign-on 17DH BREAKV: DS 3 ;send break (not implemented) 180H ; ; ; These six lines are an artifact of MDMXXX. They are not used with MEX. ; ILPRTV: DS 3 ;replace with MEX function 9 183H INBUFV: DS 3 ;replace with MEX function 10 186H ILCMPV: DS 3 ;replace with table lookup funct. 247 189H INMDMV: DS 3 ;replace with MEX function 255 18CH NXSCRV: DS 3 ;not supported by MEX 18FH TIMERV: DS 3 ;replace with MEX function 254 192H ; ; ; The following clears the screen for the H19/29/49 terminal. ; Each of the two routines must be exactly 9 bytes long. ; CLREOS: LXI D,EOSMSG MVI C,PRINT CALL MEX RET ; CLRSCRN: LXI D,CLSMSG MVI C,PRINT CALL MEX RET ; ; ; End of the fixed format area. ; ; SYSVER: MVI C,ILP CALL MEX DB 'Version for InterSystems VIO and Z19/29/49' 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 0B00H (601 bytes ; available after start of SYSVER) if using the Hayes Smartmodem ; or by address 0D00H (2659 bytes) otherwise. ; ;----------------------------------------------------------------------- ; ; This routine can be used to make any necessary changes before exiting ; back to CP/M. If you share a VIO port between a printer and a modem, ; you can use this routine to change the baud rate and other port ; characteristics back to what the printer requires. ; GOODBYE: RET ;..... ; ; ; The following is used to initialize the VIO 2651 Modem I/O port ; INITMOD: call clrscrn ;added 6/2/85 MVI A,1 ;default transfer speed to 300 baud STA MSPEED MVI A,04EH ;Mode Register 1 word - ; 1 stop bit, no parity, 8 bits, Async * 16 OUT PORT+2 ;2651 mode port address MODREG2: MVI A,35H ;Mode Register 2 word - ; internal clocks, 300 Baud OUT PORT+2 ;2651 mode port address MVI A,27H ;Command Register word - ; normal operation, RTS* forced low, reset ; error normal, force break normal, receive ; control enabled, DTR* forced low, transmit ; control enabled OUT PORT+3 ;2651 command port address RET ;..... ; ; ; The following routine changes the baud rate for the VIO with the SET ; command. ; ; SETCMD: MVI C,SBLANK ;Any arguments? CALL MEX JC TELL ;If not, go display baud LXI D,CMDTBL MVI C,LOOKUP CALL MEX ;Parse argument PUSH H ;Save any parsed argument addrs on stack RNC ;If we have one, return to it POP H ;Oops, input not found in table MVI C,ILP CALL MEX ;Tell user input not valid DB CR,LF,'Only 300 or 1200 allowed on SET command',CR,LF,0 RET ; CMDTBL: DB '30','0'+80H DW OK300 DB '120','0'+80H DW OK1200 DB 0 ; TELL: MVI C,ILP CALL MEX ;Print current baud rate DB CR,LF,'Baud rate is now: ',0 LDA MSPEED MVI C,PRBAUD CALL MEX RET ; ; ; OK300: MVI A,1 ;MSPEED 300 baud value LXI H,BD300 ;get pointer to 300 baud parameter in HL JMP LOADBD ;go load them ; OK1200: MVI A,5 ;MSPEED 1200 baud value LXI H,BD1200 ;get pointer to 1200 baud parameter in HL ; LOADBD: STA INITMOD+1 ;store speed to show transfer time MOV A,M ;get mode register 2 word for new baud rate STA MODREG2+1 ;store in INITMOD JMP INITMOD ;reinitialize VIO 2651 ; ; NEWBAUD: CPI 1 JZ OK300 CPI 5 JZ OK1200 RET ; ; ; Table of baud rate parameters ; BD300: DB 35H BD1200: DB 37H ; ; EOSMSG: DB ESC,'J',0,0,0,'$' CLSMSG: DB ESC,'E',0,0,0,'$' ; ;******* ; DIAL * ;******* ; ; This routine dials the Novation J-Cat. Mex starts the dial routine ; by calling this subroutine with a 254 (FE hex) in register A. Each time ; it is called again A has the next digit of the telephone number. We ; store the numbers at "number" until the entire number is sent. ; Mex signals that it has sent the entire number by calling this subroutine ; with a 255 (FF hex) in A. Once the entire number has been received ; we take the phone off-hook, wait for a dial tone, and dial the number. ; if after 15 seconds we don't detect a carrier, we return to mex with a 2 ; in A. If a carrier is detected, we return with a 0 in A. If he pressed ; control-c during the dial, we return immediately with a 3 in A. dial: cpi 0feh ;see if MEX wants to start a call jnz dial0 ;jump if not mvi a,true ;set the entry-in-progress flag sta entryinprogressflag lxi h,number ;initialize the pointer to the phone number shld numpointer ret dial0: cpi 0ffh ;see if it's the end-dial code jz dial0a ;jump if it is ;otherwise A must hold one digit of the phone ; number mov e,a ;store the value Mex passed us via A in E lda entryinprogressflag ;check and see if it's legal to be cpi true ; here by seeing if the flag is set. jz dial00a ;jump if we're legal mvi c,ilp ;we're not legal. tell him that we've received call mex ; a digit before a start-dial code db 'We''ve got a problem. I received a digit before getting' db cr,lf,'a "Start-dial" code (254).',0 mvi a,3 ;make it look like a control-c abort to MEX ret dial00a:mov a,e ;get the digit back in A cpi '9' + 1 ;make sure it's between 0 and 9 rnc ;return if it's too big sui '0' rc ;return if it's too big adi '0' ;restore it if it's ok call getnumber ;get the next digit in the phone number from ; MEX ret dial0a: lda entryinprogressflag ;see if we've received a "start-call" cpi true jz dial0b ;jump if we are in the middle of a call mvi c,ilp ;tell him that we received an end-dial code call mex ; before a start-dial code db 'We''ve got a problem. I received an "End-dial" code (255)' db cr,lf,'before getting a "Start-dial" code (254).',0 mvi a,3 ;make it look like a control-c abort to MEX ret dial0b: mvi a,0 ;mark the end of the number call getnumber ;store a null at the end of the number lda false sta entryinprogressflag ;reset the flag mvi a,portdefault ;get the default setting for the port we use ori offhook ; to control OHK and set OHK to 1 out offonhookport ;take the phone off hook mvi c,ilp ;tell him we're waiting 3 seconds call mex db cr,lf,'Waiting for a dial tone...',0 mvi d,dialtonewait dial0c: lxi b,1000 ;wait 3 seconds for a dial tone call delay call keycheck ;see if a key was pressed dcr d ;decrement the wait counter jnz dial0c ;jump if we haven't waited long enough mvi c,ilp call mex ;tell him we're starting to dial db cr,lf,'Dialing...',0 lxi h,number ;point to the number he just typed mov a,m ;load it into A and check if it's zero dial1 ora a ;set the flags. Z set to 1 means A is a zero. jz done ;jump if we finished dialing sui '0' ;otherwise, subtract out the ASCII offset jnz dial1a ;check if it's zero. jump if it's not mvi a,10 ;it was zero, so convert it to ten dial1a mov e,a ;keep the digit we're dialing in E dial2 mvi a,portdefault ;get the default setting for the port ani onhook ;set OHK to 0 for 60 milliseconds out offonhookport lxi b,60 call delay mvi a,portdefault ;get the default setting again ori offhook ;set OHK to 1 for 40 milliseconds out offonhookport lxi b,40 call delay dcr e ;decrement E. if E is zero go on to next digit jnz dial2 ;jump if it's not zero yet lxi b,900 ;it was zero, so wait for 700 to 900 call delay ; milliseconds before we dial the next digit call keycheck ;see if a key was pressed inx h ;get the next digit mov a,m ;put it in A jmp dial1 ;jump back to the zero check done mvi c,ilp call mex ;print a crlf db cr,lf,0 mvi d,carrierwait ;wait for a carrier "carrierwait" seconds done1 lxi b,1000 ;wait 1 second for a carrier call delay call carriercheck ;see if we connected with a modem jnz yescarrier ;jump if we connected call keycheck ;see if a key was pressed dcr d jnz done1 ;jump if we haven't waited long enough call hangup ;hangup the phone mvi a,2 ;tell MEX we didn't detect a carrier ret yescarrier:mvi a,0 ;tell MEX we detected a carrier ret number: ds length entryinprogressflag db 0 numpointer ds 2 ; ;************ ; GETNUMBER * ;************ ; Getnumber gets the telephone number we will dial from the user. ; C holds the maximum number of characters to be accepted. getnumber:lhld numpointer ;get the pointer to the next position ; to be loaded into the number storage ; location mov m,a ;move the number MEX sent us to ; storage inx h ;increment the pointer to the storage shld numpointer ;save it ; ;*************** ; CARRIERCHECK * ;*************** ; ; Check if we have a carrier. Return with the zero flag set if not. ; carriercheck: in cardetectport ;check if a carrier was detected ani carriermask ;mask off the "carrier detect" bit ret ; ;*********** ; KEYCHECK * ;*********** ; See if he pressed control-c. If yes, zero flag is set. keycheck:push d ;save DE push h ;save HL mvi c,chekcc ;see if control-c was pressed call mex pop h ;restore HL pop d ;restore DE rnz call hangup mvi a,3 ;tell MEX we were aborted form the keyboard pop h ;pop the normal return address and throw it ; away ret ;return to MEX instead ; ;********* ; HANGUP * ;********* ; Hangup puts the phone on hook in the strange way the J-Cat requires ; to avoid going into self-test. hangup: mvi a,portdefault ;get the default settings again ani onhook ;put the phone on hook (hang up) for 25 msec. out offonhookport lxi b,25 call delay mvi a,portdefault ;get the default setting again ori offhook ;take the phone off hook for 20 milliseconds out offonhookport lxi b,20 call delay mvi a,portdefault ;get the default setting again ani onhook ;put it on hook again for good this time out offonhookport ret ; ;******** ; DELAY * ;******** ; Delay is a delay loop that last BC milliseconds. Doesn't touch ; DE and HL. delay: push d ;save DE and HL push h inr b ;Set B to 1 higher, since we decrement it ; later before we test it delay1 lxi d,milliconstant ;load DE with the delay constant delay2 dcx d ;inner loop until DE goes to zero mov a,e ora d jnz delay2 dcr c ;middle loop until C goes to zero jnz delay1 dcr b ;outer loop until B goes to zero too jnz delay1 pop h ;restore HL and DE pop d ret ; and return ;------------------------------------------------------------------ ; ; NOTE: MUST TERMINATE PRIOR TO 0B00H (with Smartmodem) ; END ;