; I2AV-1.ASM - Apple ][ overlay file for IMP - 06/01/87 ; ; PCPI Z80 adapter with VERSAcard MC6850 ACIA ; ; VERSAcard ; ; To use SET with the Prometheus VERSAcard a small hardware change must ; be made, since the VERSAcard only supports baud rate selection via DIP ; switches. This change will allow the VERSAcard to be switched between ; 300 and 1200 baud via software. A wire should be attached from Pin ; #12 on U16 (IC marked 8126) on the VERSAcard into Annunciator #3 (Pin ; #12) on the Apple game port. This will allow switch #4 on s2 of the ; VERSAcard to be toggled by setting or clearing annunciator #3. The de- ; fault baud rate is set at MSPEED Below either (300 or 1200). ; ; Note: This method could be extended to all other VERSAcard baud rates ; and by using Annunciators 0,1,2 but 300 and 1200 are really ; needed for a modem program. The DIP switches on the VERSAcard ; should be set as follows: ; ; On switch bank #2: ; S2 - ON ; S3 - OFF ; S4 - OFF ; S5 - OFF ; ; ; NOTE: If you have trouble disonnecting from the ; phone line, you may not have a normal DTR ; setup to turn off the modem. In that case, ; set the NODTR: option at 011E to YES, to ; provide ATH0 to disonnect. (This assumes ; you have a Hayes-compatible type modem with ; "AT" command set.) ; ; ; _________________ ; | | ; | 7 6 5 4 3 2 1 0 | 6850 ACIA for serial I/O ; |_________________| ; ; CR1 CR0 Function ; 0 0 1 ; * 0 1 16 (for 1200 bps) ; + 1 0 64 (changes to 300 baud) ; 1 1 Master reset ; ; CR4 CR3 CR2 ; 0 0 0 7 bits, even parity, 2 stop bits ; 0 0 1 7 bits, odd parity, 2 stop bits ; 0 1 0 7 bits, even parity, 1 stop bit ; 0 1 1 7 bits, odd parity, 1 stop bit ; 1 0 0 8 bits, no parity, 2 stop bits ; * 1 0 1 8 bits, no parity, 1 stop bit ; 1 1 0 8 bits, even parity, 1 stop bit ; 1 1 1 8 bits, odd parity, 1 stop bit ; ; CR6 CR5 ; 0 0 RTS low, Xmit interrupt disabled ; 0 1 RTS low, Xmit interrupt enabled ; * 1 0 RTS high, Xmit interrupt disabled ; 1 1 RTS low, Xmit interrupt disabled, break sent ; ; CR7 ; 0 Interrupts disabled ; * 1 Enables recieve buffer full, overrun, low-to-high ; transition on the data carrier detect. ; ; - Notes by Irv Hoff W6FFC ; ;----------------------------------------------------------------------- ; ; 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,I2AP-x.HEX ; ; - Notes by Irv Hoff W6FFC ; ; = = = = = = = = = = = = = = = = = = ; ; 06/01/87 First version for IMP - Irv Hoff ; ; = = = = = = = = = = = = = = = = = = ; YES EQU 0FFH NO EQU 0 ; ;====================== CUSTOMIZATION EQUATES ========================== ; SLOT EQU 2 ; Slot of serial interface SLOTOFF EQU 16*SLOT ; Serial card slot offset ; ; ; CP/M adapter cards for Apple ][ ; PCPI EQU YES ; Yes if using PCPI Applicard CP/M card ; ; ; Serial I/O cards for Apple ][ ; VERSA EQU YES ; Yes for Prometheus VERSAcard ; ; ;----------------------------------------------------------------------- ; MAPOFF EQU 0 ; No memory remapping for either ; ;----------------------------------------------------------------------- ; MDRCV EQU 1 ; Bit to test for receive MDSND EQU 2 ; Bit to test for send MDTXE EQU 2 ; Modem send buffer empty ; ;----------------------------------------------------------------------- ; MDCTL1 EQU 0C08EH+SLOTOFF+MAPOFF ; Status port of VERSAcard MDDATP EQU 0C08FH+SLOTOFF+MAPOFF ; Data port of VERSAcard ; ;----------------------------------------------------------------------- ; AN3CLR EQU 0C05EH+MAPOFF ; Clear annunciator #3 AN3SET EQU 0C05FH+MAPOFF ; Set " #3 ; ;----------------------------------------------------------------------- ; ; We have software control over the VERSAcard (if the hardware mod is ; made.) ; ;----------------------------------------------------------------------- ; ; 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 ; CLOCK: DB 6 ; Clock speed in MHz, 25.5 MHz max. 10BH ; NOTE: DO NOT MULTIPLY BY 10 FOR 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 ][ with ' DB 'PCPI Applicard' DB CR,LF,' and ' DB 'VERSAcard' DB ' in slot ',SLOT+30H,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). ; ;----------------------------------------------------------------------- ; ; 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 from a happy computer user',CR,0 ; ;----------------------------------------------------------------------- ; ; This routine sends a break tone for 300 ms ; SENDBRK: CALL RCVCTL1 ; Get the current status and speed STA SBTEMP ; Store it for now MVI A,0F5H ; Set for a break JMP GOODBYE1 ; Go send it ;..... ; ; SBTEMP: DB 0 ; Temporary storage to remember speed ;..... ; ; ; This routine sets DTR low for 300 ms to disconnect the phone ; ; GOODBYE: CALL RCVCTL1 ; Get the current status and speed STA SBTEMP ; Store it for now MVI A,0D5H ; Turn off DTR ; GOODBYE1: CALL SNDCTL1 ; Send to the Modem MVI B,3 ; Delay 300 ms to hang up phone CALL J$TIMER LDA SBTEMP ; Get original status and speed back CALL SNDCTL1 MVI A,0B5H ; Turn everything back on CALL SNDCTL1 XTHL ; Short delay to complete command XTHL RET ;..... ; ; ;=========================== INITMOD =================================== ; ; INITMOD EQU $ ; INITMOD1: LDA MSPEED ; Set annunciators to known state CPI 1 ; Is it 300 ? JZ OK300 CPI 5 ; Is it 1200 ? JZ OK1200 RET ;..... ; ; ; The following routine initializes the VERSAcard to the default baud ; rate which is set at MSPEED above. If MSPEED is set to something ; other than 300 or 1200 this routine does not alter the annunciator ; settings. ; ; ;========================== APPLE I/O ================================== ; RDBYTE EQU 0FFE0H ; Read 1 byte from Apple (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 ;..... ; ; RCVAN3C: PUSH D LXI H,AN3CLR JMP PEEK ; RCVAN3S: PUSH D LXI H,AN3SET JMP PEEK ;..... ; ; ;----------------------------------------------------------------------- ; ; 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: CALL RCVAN3C ; Clear Annunciator #3 for 300 baud MVI A,1 ; Set MSPEED for 300 baud STA MSPEED ; For 300 baud RET ; OK1200: CALL RCVAN3S ; Set Annunciator #3 for 1200 baud MVI A,5 ; Set MSPEED for 1200 bps STA MSPEED ; For 1200 baud RET ; OK2400: JMP OK1200 ; Does not support 2400 bps ; OK9600: JMP OK1200 ; Does not support 9600 bps ;..... ; ; BAUDBUF:DB 10,0,0,0,0,0 DB 0,0,0,0,0,0 ; ;..... ; ; ;----------------------------------------------------------------------- ; NOTE: Must terminate prior to 0400H ; END