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Assembly Source File | 1986-06-11 | 13.5 KB | 555 lines

; I2EQ+1.ASM - INSIGHT EQ-4 overlay file for IMP - 10/27/85 ; ; Zilog DART and 8116 baudrate generator ; ; 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 overlay adapts the Insight Enterprises EQ-4 computer, using the ; Z80 DART and SMC 8116 baud rate generator to IMP.COM. ; ; Edit this file for your preferences then follow the "TO USE:" example ; shown below. ; ; Many terminals will clear the screen with a CTL-Z. If yours does, put ; a 1AH at CLEAR: (010AH). Many terminals use two characters, the first ; normally an ESC. For example, ESC *. In this case put '*' at CLEAR: ; (The ESC will automatically be typed with no CTL-character present.) ; If you don't know what your terminal uses, put a 0 at CLEAR: and IMP ; will scroll up 24 blank lines to clear the CRT for things like MENU, ; looking at the function key table, typing CTL-Z in command mode, etc. ; ; Use the "SET" command to change the baudrate when desired. The value ; at MSPEED controls the baudrate when the program is first called up. ; ; 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 merge into the main file: ; ; MLOAD IMP.COM=IMP.COM,I2DP-x.HEX ; ; = = = = = = = = = = = = = = = = = = ; ; 03/15/86 Converted to 8080 mnemonics, can now be use any normal 8080 ; normal assembler. Standardized routines to be compatible ; with other IMP overlays. - Irv Hoff ; ; 02/09/86 Correction to 2400 baud select entry ; - Chris Taylor ; ; 10/27/84 First version of this file, from I2KP-1.ASM ; - Chris Taylor ; ; = = = = = = = = = = = = = = = = = = ; ; YES EQU 0FFH NO EQU 0 ; ; ; Change the following information to match your equipment ; PORT EQU 38H ; Port modem is on DART EQU 'A' ; Modem is on DART pair "A" BRPORT EQU 37H ; Baud rate generator port MDCTL1 EQU PORT+1 ; Modem control port MDDATP EQU PORT ; Modem data in port MDRCV EQU 1 ; Bit to test for receive MDSND EQU 4 ; Bit to test for send MDTXE EQU 1 ; Value when ready ; ; ;----------------------------------------------------------------------- ; ESC EQU '['-40H ; ^[ = Escape BELL EQU 'G'-40H ; ^G = Bell character LF EQU 'J'-40H ; ^J = Linefeed NEXTRY EQU 'K'-40H ; ^K = Try next phone number, abort this try CR EQU 'M'-40H ; ^M = Carriage return CLEARSC EQU 'Z'-40H ; ^Z = Clears screen, command mode only EOFCHAR EQU 'Z'-40H ; ^Z = End of file ; ; ;----------------------------------------------------------------------- ; ; ORG 100H ; ; ; Change the clock speed if needed, to match your system ; DS 3 ; (for "JMP START" instruction) ; ; MSPEED: DB 5 ; 0=110 1=300 2=450 3=600 4=710 5=1200 103H ; 6=2400 7=4800 8=9600 9=19200 default HS2400: DB NO ; Yes=2400 bps highest speed 104H HS1200: DB YES ; Yes=1200 bps highest speed 105H RACAL: DB NO ; Yes=Racal-Vadic 1200V 2400V or 2400PA 106H PROMODM: DB NO ; Yes=Prometheus Promodem 1200 bps 107H RESVD1: DB NO ; Reserved for special modems 108H RESVD2: DB NO ; Reserved for special modems 109H ; ; CLEAR: DB 1AH ; Clear screen char (ESC not needed) 10AH CLOCK: DB 40 ; Clock speed in mhz x10 25.5 MHz max 10BH ; BYTDLY: DB 2 ; 0=0 delay 1=10ms 5=50ms 9=90ms 10CH ; Default time to send character in ter- ; minal mode file transfer for slow BBS CRDLY: DB 2 ; 0=0 delay 1=100ms 5=500ms 9=900ms 10DH ; Default time for extra wait after CRLF ; in terminal mode file transfer NOFCOL: DB 5 ; Number of directory columns shown 10EH TCHPUL: DB 'T' ; T=tone, p=pulse (Hayes 2400 modems 10FH ;...... ; ; ADDLFD: DB NO ; Yes=add LF after CR to send file in terminal 110H ; mode (normally added by remote echo) CONVRUB: DB YES ; Yes=convert rub to backspace 111H CRCDFLT: DB YES ; Default to CRC checking 112H IGNRCTL: DB NO ; Yes=control chars above ^M not shown 113H ;..... ; ; EXTCHR: DB '['-40H ; Esc = preceeds local CTL chars 114H EXITCHR: DB 'E' ; Exit character FILESND: DB 'F' ; Send file in terminal mode 116H NOCONCT: DB 'N' ; Disconnect from phone line 117H LOGCHR: DB 'L' ; Send logon 118H LSTCHR: DB 'P' ; Toggle printer 119H UNSAVCH: DB 'R' ; Close input text buffer 11AH SAVECH: DB 'Y' ; Open input text buffer 11BH CLEARS: DB 'Z' ; Clear screen in terminal mode 11CH SPARE1: DB 0 ; Future development 11DH NODTR: DB NO ; Yes if no DTR and need +++ to disconnect 11EH ;..... ; ; I$MDCTL1: IN MDCTL1 ; In modem control port 11FH RET DB 0,0,0,0,0,0,0 ; I$MDTXE: IN MDCTL1 ; In modem data port 129H RET DB 0,0,0,0,0,0,0 ; IN$MDDATP: IN MDDATP ; In modem data port 133H RET DB 0,0,0,0,0,0,0 ; O$MDDATP: OUT MDDATP ; Out modem data port 13DH RET DB 0,0,0,0,0,0,0 ;..... ; ; A$MDRCV: ANI MDRCV ; Bit to test for receive ready 147H RET ; C$MDRCV: CPI MDRCV ; Value of rcv. bit when ready 14AH RET ; A$MDSND: ANI MDSND ; Bit to test for send ready 14DH RET ; C$MDSND: CPI MDSND ; Value of send bit when ready 150H RET ; A$MDTXE: ANI MDTXE ; 153H RET ; C$MDTXE: CPI MDTXE ; 156H RET ;..... ; ; ; Special exit vector to reset interrupt vectors ; J$EXITVEC: RET ; 159H DS 2 ; ; J$GOODBYE: JMP GOODBYE ; 15CH J$INITMOD: JMP INITMOD ; Go to user written routine 15FH J$STUPR: JMP STUPR ; 162H J$SYSVER: JMP SYSVER ; 165H ;..... ; ; ; "AT" command strings, can be replaced by indificual overlay ; J$STRNGA: DS 3 ; 1200 bps "AT" string 168H J$STRNG1: DS 3 ; 2400 bps "AT" string 16BH ; ; ; Do not change the following FOURTEEN lines. They are to specific lo- ; cations in the main program, not the overlay ; J$CMDSPL: DS 3 ; Allows entry of baudrate 16EH J$CRLF: DS 3 ; 171H J$DIAL: DS 3 ; 174H J$DSCONT: DS 3 ; 177H J$GOLST: DS 3 ; Apple //e printer routine 17AH ; J$ILPRT: DS 3 ; 17DH J$INBUF: DS 3 ; 180H J$INLNCP: DS 3 ; 183H J$INMDM: DS 3 ; 186H ; J$RCVRSP: DS 3 ; 189H J$SNDCHR: DS 3 ; Send character to modem 18CH J$SNDSTR: DS 3 ; Send string ($ at end) to mdm 18FH ; J$TIMER: DS 3 ; 192H ; J$NEW1: DB 0,0,0 ; Future needs 195H J$NEW2: DB 0,0,0 ; Future needs 198H ;....... ; ; ; For 2400 bps auto-stepdown modems ; MANUAL: DB 0 ; Manual selection flag 19BH J$300: JMP OK300 ; Set 300 baud 19CH J$1200: JMP OK1200 ; Set 1200 baud 19FH J$2400: JMP OK2400 ; Set 2400 baud 1A2H ;..... ; ; LOGPTR: DW LOGON ; Pointer to display logon msg 1A5H ; SYSVER: CALL J$ILPRT ; 1A7H DB 'Insight Enterprises EQ-4',CR,LF,0 ; 1AAH DB 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 CR,LF,'Insight Enterprises EQ-4', CR,LF,0 ; ;----------------------------------------------------------------------- ; ; ; This routine sets DTR low for 300 ms to disconnect the phone ; GOODBYE:MVI B,'S'-40H ; X-off to stop host if needed CALL J$SNDCHR MVI B,1 ; Wait a moment to let it react CALL J$TIMER MVI A,5 OUT MDCTL1 ; Send to the status port MVI A,068H ; Turn off dtr, send break OUT MDCTL1 MVI B,3 ; Wait 300 ms CALL J$TIMER MVI A,5 OUT MDCTL1 MVI A,0E8H ; Restore normal, 8 bits, dtr on, etc. OUT MDCTL1 RET ;..... ; ; ; The following is used to initialize the EQ-4 Z80 DART-2 port. Baud ; rate is initially set to 'SPEED'. ; INITMOD:MVI A,DART CPI 'A' ; If DART pair "A" selected MVI A,MASK$A JZ DO$A MVI A,MASK$B ; Else, do "B" dart pair ; DO$A: STA PORT$MASK ; Set port mask for future baud changes MVI A,00H ; Select register OUT MDCTL1 MVI A,18H ; Throw out of mode OUT MDCTL1 MVI A,04H ; Select register OUT MDCTL1 MVI A,44H ; Set ASCII parameters (44=1, 4C=2) OUT MDCTL1 MVI A,03H ; Select register OUT MDCTL1 MVI A,0C1H ; Enable receive OUT MDCTL1 MVI A,05H ; Select register OUT MDCTL1 MVI A,0EAH ; Enable send, DTR, RTS OUT MDCTL1 ; LDA MSPEED ; Get the selected value CPI 1 ; 300 bps JZ OK300 CPI 5 ; 1200 bps JZ OK1200 CPI 6 ; 2400 bps JZ OK2400 CPI 8 ; 9600 bps JZ OK9600 JMP STUPR1 ; Else ask what is wanted ;..... ; ; ; Sets the modem speed via the SET command. ; ; STUPR: CALL J$CMDSPL ; Gives us CMDBUF+6 JNC STUPR2 ; STUPR1: CALL J$ILPRT DB 'Input Baud Rate (300, 1200, 2400, 9600): ',0 LXI D,BAUDBUF ; Point to new input buffer CALL J$INBUF CALL J$CRLF LXI D,BAUDBUF+2 ; STUPR2: CALL J$INLNCP ; Compare BAUDBUF+2 with chars. below DB '300',0 JNC OK300 ; Go if got match CALL J$INLNCP DB '1200',0 JNC OK1200 CALL J$INLNCP DB '2400',0 JNC OK2400 CALL J$INLNCP DB '9600',0 JNC OK9600 CALL J$ILPRT ; All matches failed, tell operator DB '++ Incorrect entry ++',CR,LF,BELL,CR,LF,0 JMP STUPR1 ; Try again ; OK300: MVI A,1 ; MSPEED 300 baud value MVI B,BD300 JMP LOADBD ; OK1200: MVI A,5 MVI B,BD1200 JMP LOADBD ; OK2400: XRA A STA MANUAL ; Reset to maximum auto-speed MVI A,6 MVI B,BD2400 JMP LOADBD ; OK9600: MVI A,8 MVI B,BD9600 ; LOADBD: STA MSPEED ; Change time-to-send to match baudrate MOV A,B ; Get baudrate byte CALL DO$CHANGE RET ;..... ; ; ; TABLE OF BAUDRATE PARAMETERS ; BD300 EQU 5 BD1200 EQU 7 BD2400 EQU 10 BD9600 EQU 14 ; BAUDBUF:DB 10,0,0,0,0,0 DB 0,0,0,0,0,0 ;..... ; ; ; HL points to block to output ; DB data,data,data,data.... ; BLOCK$OUTPUT: MVI B,6 ; Get count BLOCK1: OUT MDCTL1 INX H DCR B JNZ BLOCK1 RET ; Return ;..... ; ; DBC EQU 50 ; Direct BIOS call MASK$A EQU 0F0H ; Baud rate mask for port A MASK$B EQU 00FH ; Baud rate mask for port B BDOS EQU 0005H ; BDOS entry ; ; ;----------------------------------------------------------------------- ; ; Locate the character I/O table then search for the DART ports. When ; correct DART found, change the speed to the new value. This allows ; 'device' command to report the actual speed. ; ;----------------------------------------------------------------------- ; DO$CHANGE: CPI 10 JNC STO$SPD DCR A ; STO$SPD:MOV L,A ; Convert speed to a pointer MVI H,0 DAD H ; *2 for table entry size LXI D,SPEED$T ; Base of table DAD D SHLD TABLE$IDX ; Save true pointer MOV A,M STA BAUD LXI D,DBCT ; Point to BIOS call table MVI C,DBC ; Direct BIOS call CALL BDOS ; ; ; Begin search for DARTS ; LXI B,8 ; Size of character I/O table entry ; LOOP: MOV A,M ; Get link indicator ANA A JZ SET$BAUD$RATE ; End of link if null PUSH H INX H INX H INX H INX H INX H MOV A,M ; Get which port MOV D,A ; Save for later INX H INX H MOV E,M ; Remember old rate CPI 'A' JNZ STO$B MOV A,E ; Save old rate for later STA A$SPD JMP NEXT ; STO$B: CPI 'B' ; Is it 'B' port JNZ NEXT ; No, don't update MOV A,E STA B$SPD ; NEXT: DCX H MVI A,DART ; Get selectd port CMP D ; Is this a match? JNZ BUMP DB 0CBH,4EH ; Z80 code JZ BUMP INX H LDA BAUD ; Get true baud rate CPI 10 ; Check if adjustment needed JNC STO$RT INR A ; Yes, so correct for display ; STO$RT: MOV M,A ; And put into table entry ; BUMP: POP H ; Recover HL DAD B ; Bump pointer JMP LOOP ; Go do another ;..... ; ; ; End of chain found, set new baud rate ; SET$BAUD$RATE: LDA B$SPD ; Get the old speeds CPI 10 JNC SKIP1 ; Adjust rate value DCR A ; SKIP1: RLC RLC RLC RLC MOV B,A LDA A$SPD CPI 10 JNC SKIP2 ; Adjust rate value DCR A ; SKIP2: ORA B LXI H,PORT$MASK ; Get correct mask ANA M ; Erase for new value MOV B,A ; Save value for later LHLD TABLE$IDX ; Get table entry pointer LDA PORT$MASK CPI MASK$A JZ GET$RATE ; If B port then point to B port speed INX H ; GET$RATE: MOV C,M ; Get new value MOV A,B ; Get old value ORA C ; Form new value OUT BRPORT ; Change the speed RET ;..... ; ; ;**************************************** ; * ; STORAGE * ; * ;**************************************** ; ; TABLE$IDX: DW SPEED$T ; Pointer to table entry ; ; ; Port speed A/B ; SPEED$T:DB 0,0*16 ; 50 baud DB 1,1*16 ; 75 baud DB 2,2*16 ; 110 baud DB 3,3*16 ; 134 baud DB 4,4*16 ; 150 baud DB 5,5*16 ; 300 baud DB 6,6*16 ; 600 baud DB 7,7*16 ; 1200 bps DB 8,8*16 ; 1800 bps DB 9,9*16 ; 2000 bps ( not supported ) DB 10,10*16 ; 2400 bps DB 11,11*16 ; 3600 bps DB 12,12*16 ; 4800 bps DB 13,13*16 ; 7200 bps DB 14,14*16 ; 9600 bps DB 15,15*16 ; 19200 bps ; BAUD: DB 0 ; Selected baud rate value A$SPD: DB 0 ; Old baud rate B$SPD: DB 0 ; Old baud rate ; PORT$MASK: DB 0,0 ; Port mask ; DBCT: DB 20 ; BIOS call 20 - character I/O tables DB 0 ; A reg DW 0 ; BC regs DW 0 ; DE regs DW 0 ; HL regs ;..... ; ; end ;----------------------------------------------------------------------- ; ; NOTE: Must terminate prior to 0400H ; END