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- ;***********************************************************************
- ;
- ;
- ;
- ; MBYE (Modular 'BYE')
- ; Otrona Attache Specialized Routines
- ; v1.1 (04/08/84) by Donald Larson
- ; Modified from.....
- ;
- ; MBYE (Modular 'BYE')
- ; Zilog Z80-SIO/DART USART/UART routines
- ; v2.1 (02/21/84) by Kim Levitt
- ;
- ;
- ;
- ;----------------------------------------------------------------------
- ;
- ; This particular version was skeletonized and reworked for the Otrona
- ; Attache. The program will utilize escape codes to the display driver
- ; instead of direct hardware sets to prevent difficulties with Valet.
- ; Also note that this will require a rework on the Otrona standard modem
- ; ("Communications") cable. The pin for CTS must be moved to pin 8
- ; from pin 5 on the DB-25 (25 pin) connector. This will allow the
- ; BYE to monitor the DSR (data set ready) lead (which tracks with
- ; carrier detect). Therefore the correct cable would be:
- ;
- ; Attache' Modem
- ; 15 pin 25 pin
- ;
- ; 1 --------- Protective Ground ----------- 1
- ; 2 --------- Transmitted Data ------------ 2
- ; 4 --------- Received Data --------------- 3
- ; NOTE ===> 5 --------- Clear to Send --------------- 8
- ; 8 --------- Signal Ground --------------- 7 <---+-+
- ; 9 --------- Data Terminal Ready --------- 20 | |
- ; 10 --------- Request to Send ------------- 4 | |
- ; 11 --------- Received Data Return ---------------+ |
- ; 12 --------- Clear to Send Return -----------------+
- ;
- ; NOTE: this is where you change the standard lead from pin 5 in the
- ; standard cable to pin 8 as shown.
- ;
- ; This version was tested with a Hayes Smartmodem 1200 and an 8:16
- ; using CP/M 2.2.5. If there are any bugs, please call by voice
- ; days at (312) 867-6400 X 451.
- ;
- ; I have still been unable to use the Attache's (R)eal (T)ime
- ; (C)lock for forced logoff, etc. I'd like to talk to anyone
- ; coming up with a method of doing so. Please give me a call.
- ;
- ; - Donald Larson
- ;
- ;-----------------------------------------------------------------------
- ;
- ; 04/08/84 Editted, skeletonized and reformatted for
- ; specific use with the Otrona Attache. Used
- ; with MBYE v 3.2. - Donald Larson
- ; 02/21/84 Removed exclaimation mark from comment - Kim Levitt oops!
- ; 02/20/84 Added comments for XEROX 820-II & BigBoards,
- ; code for DARTs and modified SIOs to read RI - Kim Levitt
- ; 02/02/84 Fixed and renamed to work with MBYE 3.0 - Kim Levitt
- ; (Also added conditional equates 8116, CTC and KAYPRO.)
- ; 11/27/83 Altered and renamed to work with BYE3 - Irv Hoff
- ; 08/04/83 Updated for use with ByeII version 1.6 - Paul Traina
- ; 07/19/83 Improved operation of modem initialization. - Paul Traina
- ; 04/18/83 Added option to use 300/1200 Smartmodem. - Don Brown
- ; 04/14/83 Added option for alt. CTC baud set format. - Paul Traina
- ; 02/21/83 Initial version. - Steve Fox
- ;
- ;-----------------------------------------------------------------------
- ;
- BASEP: EQU 0F0H ;Set Base port for SIO (data port)
- ;
- ; The following define the port addresses to use.
- ;
- DPORT: EQU BASEP ;Data port
- SPORT: EQU BASEP+1 ;Status/Control port
- ;
- ;
- ; The following are SPORT commands (output these to SPORT)
- ;
- ; WR0:
- RESCHN: EQU 00011000B ;Reset channel
- RESSTA: EQU 00010000B ;Reset ext/status
- RESERR: EQU 00110000B ;Error reset
- ;
- WRREG1: EQU 00000000B ;WR1 - No interrupts
- WRREG3: EQU 11000001B ;WR3 - Rx 8 bits/char, Rx enable
- WRREG4: EQU 01000100B ;WR4 - 16x, 1 stop bit, no parity
- ;
- ; WR5:
- DTROFF: EQU 01101000B ;DTR off, Tx 8 bits, Tx enable, RTS off
- DTRON: EQU 11101010B ;DTR on, Tx 8 bits, Tx enable, RTS on
- ;
- ;
- ; The following are SPORT status masks
- ;
- DAV: EQU 00000001B ;Data available
- TBMT: EQU 00000100B ;Transmit buffer empty
- DCD: EQU 00100000B ;Data carrier detect (using modifed cts)
- OE: EQU 00100000B ;Overrun error
- FE: EQU 01000000B ;Framing error
- ERR: EQU OE+FE ;Overrun and framing errors
- ;
- ; This routine should turn off everything on the modem, hang it up, and
- ; get it ready to wait for a ring. (DTR off)
- ;
- MDINIT:
- MVI A,RESCHN ;Reset channel (DTR, RTS off)
- OUT SPORT
- MVI A,4 ;Setup to write register 4
- OUT SPORT
- MVI A,WRREG4 ;set 16x clock, 1 stop bit, no parity
- OUT SPORT
- MVI A,1 ;Setup to write register 1
- OUT SPORT
- MVI A,WRREG1 ;set no interrupts
- OUT SPORT
- MVI A,3 ;Setup to write register 3
- OUT SPORT
- MVI A,WRREG3 ;set Rx 8 bits, enable recv
- OUT SPORT
- MVI A,5 ;Setup to write register 5
- OUT SPORT
- MVI A,DTROFF ;leave DTR OFF initially
- OUT SPORT
- RET ;Return
- ;.....
- ;
- ;
- ; The following routine will raise DTR. (and RTS)
- ;
- MDANSW:
- MVI A,5 ;address WR5
- OUT SPORT
- MVI A,DTRON ;raise DTR, RTS
- OUT SPORT
- RET ;Return
- ;
- ;
- ; The following routine checks to make sure we still have carrier. If
- ; there is no carrier, it will return with the Zero flag set.
- ;
- MDCARCK:
- MVI A,RESSTA ;Reset status
- OUT SPORT
- IN SPORT ;Get status
- ANI DCD ;Check for data carrier
- RET ;Return
- ;
- ;
- ; The following routine determines if there is a character waiting to
- ; be received. If no character is waiting, the Zero flag will be set,
- ; otherwise, 255 will be returned in register A. (Error conditions are
- ; checked, and, if present, the character is ignored.)
- ;
- MDINST:
- IN SPORT ;Get status
- ANI DAV ;Got a character?
- RZ ;Return if none
- MVI A,1 ;else, check error bits
- OUT SPORT ;(address RR1)
- IN SPORT ;read RR1
- ANI ERR ;mask error bits
- JZ MDINST1 ;no error, ok
- MVI A,RESERR ;else, reset error bits
- OUT SPORT
- IN DPORT ;clear out garbage
- XRA A ;say no data
- RET ;and return
- MDINST1:
- ORI 0FFH ;say we got one
- RET ;...and return
- ;.....
- ;
- ;
- ; The following is a routine that will input one character from the
- ; modem port. If there is nothing there, it will return garbage... so
- ; use the MDINST routine first.
- ;
- MDINP:
- IN DPORT ;Get character
- ANI 7FH ;Strip parity
- RET ;Return
- ;.....
- ;
- ;
- ; The following is a routine to determine if the transmit buffer is
- ; empty. If it is empty, it will return with the Zero flag clear. If
- ; the transmitter is busy, then it will return with the Zero flag set.
- ;
- MDOUTST:
- IN SPORT
- ANI TBMT ;Mask it
- RET ;Return
- ;.....
- ;
- ;
- ; The following is a routine that will output one character in register
- ; A to the modem. REMEMBER, that is register A, not register C.
- ;
- ; **** Use MDOUTST first to see if buffer is empty ****
- ;
- MDOUTP:
- OUT DPORT ;Send it
- RET ;Return
- ;.....
- ;
- ;
- ; These next routines set the proper baud rates for the modem. If you
- ; do not support the particular rate, then simply put the label in front
- ; of the ORI 0FFH / RET. If the baud rate change was successful, make
- ; SURE the Zero flag is set (XRA A).
- ;
- ;
- SET110:
- MVI A,01 ;Send code for 110 baud
- JMP SETBAUD
- ;
- SET300:
- MVI A,04 ;Send code for 300 baud
- JMP SETBAUD
- ;
- SET600:
- MVI A,05 ;Send code for 600 baud
- JMP SETBAUD
- ;
- SET1200:
- MVI A,06 ;Send code for 1200 baud
- JMP SETBAUD
- ;
- SET2400:
- MVI A,07 ;Send code for 2400 baud
- JMP SETBAUD
- ;
- SET4800:
- MVI A,08 ;Send code for 4800 baud
- JMP SETBAUD
- ;
- SET9600:
- MVI A,09 ;Send code for 9600 baud
- JMP SETBAUD
- ;
- SET19200:
- MVI A,0AH ;Send code for 19,200 baud
- ;
- SETBAUD:
- PUSH PSW ;Preserve baud code (just in case)
- MVI E,ESC ;First, send escape
- CALL SCONOUT
- MVI E,'@' ;Next set for write to CMOS ram
- CALL SCONOUT
- MVI E,8 ;Communications address
- CALL SCONOUT
- POP PSW ;Get back baud code
- PUSH PSW ;Again, just in case
- MOV E,A
- CALL SCONOUT ;Write it
- MVI E,ESC ;Send escape (again)
- CALL SCONOUT
- MVI E,'<' ;Tell machine to reset to CMOS speed
- CALL SCONOUT
- POP PSW
- XRA A
- RET ;Return
- ;
- ;.....
- ;
- ; This routine uses a BDOS call for direct console I/O.
- ;
- SCONOUT:
- MVI C,6 ;BDOS direct console i/o function
- CALL BDOS
- RET
- ;
- ;....
- ;
- ; The following routine returns a 255 because we were not able to set to
- ; the proper baud rate because the serial port can't handle it.
- ;
- SET450:
- SET710:
- ORI 0FFH ;Make sure zero flag is not set
- RET ;Return
- ;
- ;.....
- ;
- ; Ok, that's all of the modem dependent routines that MBYE uses, so if
- ; you patch this file into your copy of MBYE, (using Wordstar's ^KR
- ; function) then it should work out well. (Be sure to set the SMODEM and
- ; SM1200 equates in the main program section to indicate if you are
- ; using a Hayes Smartmodem or compatible or not.)
- ;
- ;***********************************************************************