; I2A2-3.ASM - Apple //c overlay file for IMP - 06/01/87 ; ; 6551 with built-in baudrate generator ; ; This overlay file adapts Apple //c computers with various CP/M cards ; and external 300/1200 or 300/1200/2400 bps modems to IMP.COM. It sup- ; ports the following configurations: ; ; CP/M adapter cards: ; ------------------ ; ALS CP/M 3.0 adapter card ; Applied Engineering Z80+ or Z80C ; Microsoft Softcard Z80 equivalent ; PCPI Applicard ; ;----------------------------------------------------------------------- ; ; 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. ; ; 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,I2A2-x.HEX ; ; - Notes by Irv Hoff W6FFC ; ; = = = = = = = = = = = = = = = = = = ; ; 06/01/87 Improved the GOODBYE routine, added BREAK routine, needs ; IMP245 to use it. - Irv Hoff ; ; 06/06/86 Added SNDCTL2 and SNDCLT3 routines for the Applicard. ; - Irv Hoff ; ; 03/22/86 Written for the Apple //c - Irv Hoff ; ; = = = = = = = = = = = = = = = = = = ; YES EQU 0FFH NO EQU 0 ; ; ;====================== CUSTOMIZATION EQUATES ========================== ; ; CP/M adapter cards for Apple //c ; ALSCARD EQU NO ; Yes if using ALS CP/M card APPLIED EQU NO ; Yes if using Applied Engineering Z80 APPLICARD EQU YES ; Yes if using PCPI Applicard CP/M card MICROSOFT EQU NO ; Yes if Microsoft Softcard CP/M card ; ;----------------------------------------------------------------------- ; PORT EQU 0E0A8H MDDATP EQU PORT ; Data port MDCTL1 EQU PORT+1 ; Status port MDCTL2 EQU PORT+2 ; Command port MDCTL3 EQU PORT+3 ; Control port MDRCV EQU 08H ; Modem receive bit MDSND EQU 10H ; Modem send bit MDTXE EQU 10H ; Modem send buffer empty bit ; ; ;----------------------------------------------------------------------- ; ; General equates ; 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 now CR EQU 'M'-40H ; ^M = Carriage return CLEARSC EQU 'Z'-40H ; ^Z = Clear screen, command mode only EOFCHAR EQU 'Z'-40H ; ^Z = End of file ; ; ;----------------------------------------------------------------------- ; ; ORG 0100H ; DS 3 ; Skip the data area below ; ; ; These routines and equates are at the beginning of the program so ; they can be patched by a monitor or overlay file without re-assembling ; the program. ; 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 or 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 '*' ; Clear screen character (ESC not needed) 10AH ; IF APPLICARD CLOCK: DB 6 ; Clock speed in MHz, 25.5 MHz max. 10BH ; NOTE: DO NOT MULTIPLY BY 10 FOR APPLICARD ENDIF ; APPLICARD ; IF NOT APPLICARD CLOCK: DB 40 ; Clock speed in MHz x10, 25.5 MHz max. 10BH ENDIF ; NOT APPLICARD ; ; 20=2 MHh, 37=3.68 MHz, 40=4 MHz, etc. BYTDLY: DB 9 ; 0=0 delay 1=10ms 5=50 ms - 9=90 ms 10CH ; default time to send character in ter- ; minal mode file transfer for slow BBS CRDLY: DB 9 ; 0=0 delay 1=100 ms 5=500 ms - 9=900 ms 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 ; Yes=default to CRC checking 112H IGNRCTL: DB YES ; Yes=CTL-chars above ^M not displayed 113H ;..... ; ; EXTCHR: DB '['-40H ; ESC = preceeds local control character 114H EXITCHR: DB 'E' ; Exit character 115H FILESND: DB 'F' ; Send file when 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 SAVECHR: DB 'Y' ; Open input text buffer 11BH CLEARS: DB 'Z' ; Clears screen, terminal mode 11CH BRKCHR: DB 'Q' ; Send a break tone 11DH NODTR: DB NO ; YES if no DTR and need ATH0 to disconnect 11EH ;..... ; ; ; Handles in/out ports for data and status ; I$MDCTL1: JMP RCVCTL1 ; In modem control port 11FH DB 0,0,0,0,0,0,0 ; Spares if needed 122H ; I$MDTXE: JMP RCVCTL1 ; 129H DB 0,0,0,0,0,0,0 ; 12CH ; I$MDDATP: JMP RCVDATP ;in modem data port 133H DB 0,0,0,0,0,0,0 ; 146H ; O$MDDATP: JMP SNDDATP ; Out modem data port 13DH DB 0,0,0,0,0,0,0 ; Spares if needed 140H ;..... ; ; A$MDRCV: ANI MDRCV ; 147H RET ; 149H ; C$MDRCV: CPI MDRCV ; 14AH RET ; 14CH ; A$MDSND: ANI MDSND ; 14DH RET ; 14FH ; C$MDSND: CPI MDSND ; 150H RET ; 152H ; A$MDTXE: ANI MDTXE ; 153H RET ; 155H ; C$MDTXE: CPI MDTXE ; 156H RET ; 158H ;..... ; ; ; Special exit vector, used by some computers to reset interrupt vectors ; J$EXITVEC:RET ; 159H DB 0,0 ; 15AH ;..... ; ; ; Jump vectors needed by each overlay ; J$GOODBYE:JMP GOODBYE ; Disconnects modem by dropping DTR 15CH J$INITMOD:JMP INITMOD ; Initializes modem, autosets baudrate 15FH J$STUPR: JMP STUPR ; SET routine to change baudrate 162H J$SYSVR: JMP SYSVR ; Signon message 165H ;..... ; ; ; "AT" command strings, can be replaced in individual overlay if needed ; J$STRNGA: DS 3 ; 1200 bps "AT" string 168H J$STRNG1: DS 3 ; 2400 bps "AT" string 16BH ; ; ; Next fourteen lines should not be changed by user overlay as these go ; to specific locations in the main program, not in the overlay. ; J$CMDSPL: DS 3 ; Allows entry of baudrate on CMD line 16EH J$CRLF: DS 3 ; Turns up one new line on display 171H J$DIAL: DS 3 ; Start of dialing routine 174H J$DSCONT: DS 3 ; Terminates modem use 177H J$GOLST: DS 3 ; Printer routine, needed by Apple //e 17AH J$ILPRT: DS 3 ; Prints an inline string, 0 to end 17DH J$INBUF: DS 3 ; Stores a keybd string for comparison 180H J$INLNCP: DS 3 ; Inline "compare strings" routine 183H J$INMDM: DS 3 ; Max .1 sec wait for modem character 186H J$RCVRSP: DS 3 ; For 3801 I/O use (TV-803) 189H J$SNDCHR: DS 3 ; Sends a character to the modem 18CH J$SNDSTR: DS 3 ; Sends a string to the modem, $ to end 18FH J$TIMER: DS 3 ; .1 second timer (amount in 'B' reg.) 192H J$BREAK: JMP SENDBRK ; Break routine 195H J$NEW2: DB 0,0,0 ; For future needs 198H ;..... ; ; ; For 2400 bps auto-stepdown units ; MANUAL: DB 0 ; For manual selection flag 19BH J$300: JMP OK300 ; Sets baudrate to 300 baud 19CH J$1200: JMP OK1200 ; Sets baudrate to 1200 bps 19FH J$2400: JMP OK2400 ; Sets baudrate to 2400 bps 1A2H ;..... ; ; LOGPTR: DW LOGON ; Pointer to display LOGON message 1A5H ; SYSVR: CALL J$ILPRT ; Display the following line 1A7H ; DB 'Apple ][ and ' ; ; IF ALSCARD DB 'ALS CP/M Card' ENDIF ; ALSCARD ; IF APPLICARD DB 'Applicard' ENDIF ; APPLICARD ; IF APPLIED DB 'Applied Engineering' ENDIF ; APPLIED ; IF MICROSOFT DB 'CP/M 2.2 Card' ENDIF ; MICROSOFT ; DB CR,LF ; DB ' Z80C ',CR,LF DB 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). ; ;----------------------------------------------------------------------- ; ; You can put in a message at this location which can be called up with ; (special character-L). You can put in several lines. End with a 0. ; LOGON: DB 'Hello there from a happy computer user',CR,0 ; ;----------------------------------------------------------------------- ; ; This routine sets a 300 ms break tone ; SENDBRK: MVI A,0FH ; DTR normal, send break tone JMP GOODBYE+2 ; Send the break tone ;..... ; ; ; This routine sets DTR low for 300 ms to disconnect the modem. ; GOODBYE: MVI A,0EH ; Turn off DTR and send break CALL SNDCTL2 MVI B,3 ; Delay 300 ms to hang up phone CALL J$TIMER MVI A,0BH ; Set DTR, Rx, Irq CALL SNDCTL2 XTHL ; Short delay to complete command XTHL RET ;..... ; ; ;=========================== INITMOD =================================== ; ; INITMOD: IF ALSCARD LHLD 1 ; Initialize our local jumps to the BIOS LXI D,60H DAD D SHLD APREAD+1 INX H INX H INX H SHLD APWRITE+1 RET ENDIF ; ALSCARD ;..... ; ; MVI A,0BH ; Set DTR, Rx, Irq CALL SNDCTL2 XTHL ; Short delay to complete command XTHL ; 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 ;..... ; ; INITMOD1: MOV A,B ; Get the baudrate back CALL SNDCTL3 ; Store default baudrate XTHL ; Short delay to complete command XTHL RET ;..... ; ; ; If none of the above cards ; RET ; From 'CALL INITMOD' RET ;..... ; ; ;========================== APPLE I/O ================================== ; IF APPLIED OR MICROSOFT SNDCTL1:STA MDCTL1 RET ; SNDDATP:STA MDDATP RET ; RCVCTL1:LDA MDCTL1 RET ; RCVDATP:LDA MDDATP RET ;..... ; ; RCVCTL3: LDA MDCTL3 RET ; SNDCTL2: STA MDCTL2 RET ; SNDCTL3: STA MDCTL3 RET ENDIF ; APPLIED OR MICROSOFT ;..... ; ; IF ALSCARD SNDCTL1: PUSH H LXI H,MDCTL1 JMP POKE ; SNDDATP: PUSH H LXI H,MDDATP ; POKE: PUSH D PUSH B CALL APWRITE POP B POP D POP H RET ENDIF ; ALSCARD ;..... ; ; IF ALSCARD RCVCTL1: PUSH H LXI H,MDCTL1 JMP PEEK ; RCVDATP: PUSH H LXI H,MDDATP ; PEEK: PUSH D PUSH B CALL APREAD POP B POP D POP H RET ;..... ; ; ; These are the jump locations to the ALS BIOS ; APREAD: JMP $-$ APWRITE: JMP $-$ ENDIF ; ALSCARD ;..... ; ; IF APPLICARD ; RDBYTE EQU 0FFE0H ; Read 1 byte frin Aooke (A = byte) WRBYTE EQU 0FFE3H ; Write 1 byte to Apple (C = byte) RDWORD EQU 0FFE6H ; Read 2 bytes from Apple (DE = word) WRWORD EQU 0FFE9H ; Write 2 bytes to Apple (DE = word) PEEK1 EQU 6 ; Command POKE1 EQU 7 ; Command ; SNDCTL1: PUSH D LXI D,MDCTL1 JMP POKE ; SNDDATP: PUSH D LXI D,MDDATP ; POKE: PUSH B MOV B,A MVI C,POKE1 CALL WRBYTE CALL WRWORD MOV C,B CALL WRBYTE POP B POP D RET ;... ; ; RCVCTL1: PUSH D LXI D,MDCTL1 JMP PEEK ; RCVDATP: PUSH D LXI D,MDDATP ; PEEK: PUSH B MVI C,PEEK1 CALL WRBYTE CALL WRWORD CALL RDBYTE POP B POP D RET ;..... ; ; SNDCTL2:PUSH D LXI D,MDCTL2 JMP POKE ; SNDCTL3:PUSH D LXI D,MDCTL3 JMP POKE ENDIF ; APPLICARD ;..... ; ; ;----------------------------------------------------------------------- ; ; Use the 'SET' command to select a desired baud rate ; STUPR EQU $ 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 ; Get 300 baud value for 2651 in 'B' JMP LOADBD ; Go load everything ; OK1200: MVI A,5 MVI B,BD1200 JMP LOADBD ; OK2400: XRA A STA MANUAL 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 JMP INITMOD1 ; Reset to new baudrate ;..... ; ; ; Table of baud rate parameters ; BD300 EQU 22 BD1200 EQU 24 BD2400 EQU 26 BD9600 EQU 30 ; BAUDBUF:DB 10,0,0,0,0,0 DB 0,0,0,0,0,0 ;..... ; ; ;----------------------------------------------------------------------- ; NOTE: Must terminate prior to 0400H