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Assembly Source File | 1994-07-13 | 10.3 KB | 355 lines

; Overlay for the Altos 580 using the COMM 3 port. ; ; 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 adapts the Altos 580 to MEX. ; ; Edit this file for your preferences then follow the "TO USE:" example ; shown below. ; ; Use the "SET" command to change the baudrate when desired. It starts ; out at 1200 baud 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 overlay the the results ; of this program to the original .COM file. ; ; = = = = = = = = = = = = = = = = = = ; 05/01/85 Changed to run with the Altos 580. Also added 2400 ; and 9600 baud. - Jeff king ; ; 04/28/85 MEXified overlay - Chris Heuser ; 10/22/84 Used Ampro overlay and changed ; initmod addresses and other minor ; equates to work with the MAGIC ; computer PC-88. - Chris Heuser ; ; ; = = = = = = = = = = = = = = = = = = ; BELL: EQU 07H ;bell CR: EQU 0DH ;carriage return ESC: EQU 1BH ;escape LF: EQU 0AH ;linefeed ; YES: EQU 0FFH NO: EQU 0 ; ; MEX service processor stuff ; 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 SNDRDY 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 ;MEX/BDOS print-string function call ; ; Change the following information to match your equipment ; PORT: EQU 1CH ;MODEM DATA IN PORT MODCTL1 EQU PORT+1 ;MODEM CONTROL PORT MODDATP: EQU PORT ;MODEM DATA IN COMM PORT 3 CTC: EQU 0DH ;ADDR. OF CTC 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 NO ;yes=HAYES Smartmodem, no=non-PMMI 104H TOUCHPULSE: 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 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 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) TOGGLELF: DB YES ;yes=allow toggling of LF after CR 114H TRANLOGON: DB NO ;yes=allow transmission of logon 115H ;write logon sequence at location LOGON SAVCCP: DB YES ;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=check 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 a 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 'W'-40H ;^W = Send next character 127H ; ; DS 2 ; 128H IN$MODCTL1: IN MODCTL1 ! RET ;in modem control port 12AH DS 7 ; OUT$MODDATP: OUT MODDATP ! RET ;out modem data port 134H DS 7 IN$MODDATP: IN MODDATP ! RET ;in modem data port 13EH DS 7 ANI$MODRCVB: ANI MODRCVB ! RET ;bit to test for receive ready 148H CPI$MODRCVR: CPI MODRCVR ! RET ;value of receive bit when rdy 14BH ANI$MODSNDB: ANI MODSNDB ! RET ;bit to test for send ready 14EH CPI$MODSNDR: CPI MODSNDR ! RET ;value of send bit when ready 151H DS 12 ; 156H ; ; DS 2 ;Not used by MEX 160H DS 3 ; 162H DISCV: JMP ADISCV ;Hang up modem wih DSC 165H 165H GOODBV: JMP AGOODBV ;exit routine 168H INITMOD: JMP AINITMOD ;go to user written routine 16BH NEWBVD: JMP ANEWBVD ;Change baudrate 16EH ; RET ! NOP ! NOP ;(by-passes PMMI routine) 171H RET ! NOP ! NOP ;(by-passes PMMI routine) 174H JMP$SETUPR: JMP SETUPR ; 177H DS 3 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 ; ; ; Clear sequences -- CLREOS is clear to end of screen, CLRSCRN is clear ; entire screen. ; CLREOS: LXI D,EOSMSG MVI C,PRINT CALL MEX RET ; CLRSCRN: LXI D,CLSMSG MVI C,PRINT CALL MEX RET ; ; SYSVER: MVI C,ILP ; 1A7H CALL MEX DB 'Version for ALTOS 580 COMPUTER ' DB CR,LF,0 RET ; ; ; This routine allows a 300 ms. break tone to be sent to reset some ; time-shar computers. ; SENDBRK: MVI A,5 OUT MODCTL1 MVI A,0F8H ;SEND A BREAK TONE JMP AGOODBV ;..... ; ; ; This routine sends a 500 ms. break tone and sets DTR low for the same ; length of time to disconnect some modems such as the Bell 212A, etc. ; ADISCV: MVI A,5 OUT MODCTL1 ;SEND TO THE STATUS PORT MVI A,68H ;TURN OFF DTR OUT MODCTL1 JMP AGOODBV RET ; AGOODBV: MVI B,5 ;WAIT 500 MS CALL JMP$TIMER MVI A,5 OUT MODCTL1 MVI A,0EAH ;RESTORE TO NORMAL, 8 BITS, DTR ON, ETC. OUT MODCTL1 RET ;..... ; ; ; Altos 580 initialization ; AINITMOD: DI ;no interupts during setup MVI A,5 ;default transfer speed to 300 baud STA MSPEED ; MVI A,04H ;write register 4 of SIO OUT MODCTL1 ;contol port MVI A,44H ;x16, 1 stop bit, no parity OUT MODCTL1 ; MVI A,03H ;write register 3 of SIO OUT MODCTL1 ; MVI A,0C1H ;rcv 8 bits/char, rcv enable OUT MODCTL1 ; MVI A,05H ;write register 5 of SIO OUT MODCTL1 ; MVI A,0EAH ;8 bits/char, tx enable, rts enable OUT MODCTL1 ; MVI A,47H ;counter mode,contol word time constant follows OUT CTC ;CTC channel 1 MVI A,68h ; OUT CTC ;CTC channel 1 EI ; RET ; ;..... ; ; ; Setup routine to allow changing modem speed with the SET command. ; ; SETUPR: 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, 1200, 2400 or 9600 on SET command',CR,LF,0 RET ; CMDTBL: DB '30','0'+80H DW OK300 DB '120','0'+80H DW OK1200 DB '240','0'+80H DW OK2400 DB '960','0'+80H DW OK9600 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 STA MSPEED CALL STBAUD1 MVI A,34H ; Second byte value for CTC OUT CTC RET ; OK1200: MVI A,5 STA MSPEED CALL SETBAUD MVI A,68h ; Second byte value for CTC OUT CTC RET ; OK2400: MVI A,6 STA MSPEED CALL SETBAUD MVI A,34H ; Second byte value for CTC OUT CTC RET ; OK9600: MVI A,8 STA MSPEED CALL SETBAUD MVI A,0DH OUT CTC RET ; ; This routne Sets up first byte for CTC (Counter mode) ; SETBAUD: MVI A,04H OUT MODCTL1 MVI A,44H OUT MODCTL1 MVI A,47H ; Counter mode of CTC OUT CTC RET ; ; This routine sets up first byte for CTC (Timer mode) STBAUD1: MVI A,04H OUT MODCTL1 MVI A,44H OUT MODCTL1 MVI A,07H ; Timer mode of CTC OUT CTC RET ; ANEWBVD: CPI 1 JZ OK300 CPI 5 JZ OK1200 CPI 6 JZ OK2400 CPI 8 JZ OK9600 RET ; ; BAUDBUF: DB 10,0 DS 10 ; EOSMSG: DB 27,74,0,0,'$' ;KTM2 Clear EOS CLSMSG: DB 27,69,0,0,'$' ;KTM2 Clear Screen ; ; NOTE: MUST TERMINATE PRIOR TO 0B00H (with Smartmodem) ; 0D00H (without Smartmodem) ; END ;