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MXO-NA1.ASM
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Assembly Source File
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2000-06-30
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13KB
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467 lines
; MXO-NA1.ASM -- North Star Advantage overlay for MEX - 84/11/26
;
; Edit this file for your preferences then follow the "TO USE:" example
; shown below.
;
; Use the MEX "SET" command to change the baudrate when desired. Use
; "SET" to see the current baud rate and "SET xxxx" to set to xxxx. It
; starts out at the value selected from the "DBDRTx" equates.
;
;
; 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:
;
; A>MLOAD MEX.COM=MEX112.COM,MXO-NA1.ASM
;
; = = = = = = = = = = = = = = = = = =
;
; 11/26/84 - MEXified overlay - Ian Cottrell
; 07/26/84 - Added default baud rate and slot # - Ian Cottrell
; 11/11/83 - Renamed to M7NA-1.ASM, no changes - Irv Hoff
; 09/14/83 - Changed M712HZ.ASM TO M712AF.ASM - Robert Lehman
; 07/27/83 - Renamed to work with MDM712 - Irv Hoff
; 02/17/83 - 1st version of M712HZ.ASM - Irv Hoff
;
; = = = = = = = = = = = = = = = = =
;
; MEX Service Processor
;
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
;
CONOUT EQU 2 ;simulated BDOS function 2: console char out
PRINT EQU 9 ;simulated BDOS function 9: print string
INBUF EQU 10 ;input buffer, same structure as BDOS 10
;
BELL: EQU 07H ;bell
CR: EQU 0DH ;carriage return
ESC: EQU 1BH ;escape
LF: EQU 0AH ;linefeed
RON: EQU 01H ;reverse video on
ROFF: EQU 02H ;reverse video off
;
YES: EQU 0FFH
NO: EQU 0
;
;
SLOT: EQU 6 ;slot used for modem port
PORT: EQU (6-SLOT)*16 ;addr for selected slot
BAUDRP: EQU PORT+8 ;baud rate port for Advantage
MODDATP: EQU PORT ;data port for Advantage
MODCTL1: EQU PORT+1 ;status port for Advantage
MODRCVB: EQU 2 ;bit to test for received data
MODRCVR: EQU 2 ;modem receive ready
MODSNDB: EQU 1 ;bit to test for ready to send
MODSNDR: EQU 1 ;modem send ready bit
;
;110 baud not supported
DBDRT1: EQU NO ;default to 300 baud
;450 baud not supported
DBDRT3: EQU NO ;default to 600 baud
;710 baud not supported
DBDRT5: EQU NO ;default to 1200 baud
DBDRT6: EQU NO ;default to 2400 baud
DBDRT7: EQU YES ;default to 4800 baud
DBDRT8: EQU NO ;default to 9600 baud
DBDRT9: EQU NO ;default to 19,200 baud
;
IF DBDRT1
DEFBD: EQU 40H ;baud rate register value for 300
DEFMSPD: EQU 1 ;MSPEED value for 300
ENDIF ;DBDRT1
;
IF DBDRT3
DEFBD: EQU 60H ;baud rate register value for 600
DEFMSPD: EQU 3 ;MSPEED value for 600
ENDIF ;DBDRT3
;
IF DBDRT5
DEFBD: EQU 70H ;baud rate register value for 1200
DEFMSPD: EQU 5 ;MSPEED value for 1200
ENDIF ;DBDRT5
;
IF DBDRT6
DEFBD: EQU 78H ;baud rate register value for 2400
DEFMSPD: EQU 6 ;MSPEED value for 2400
ENDIF ;DBDRT6
;
IF DBDRT7
DEFBD: EQU 7CH ;baud rate register value for 4800
DEFMSPD: EQU 7 ;MSPEED value for 4800
ENDIF ;DBDRT7
;
IF DBDRT8
DEFBD: EQU 7EH ;baud rate register value for 9600
DEFMSPD: EQU 8 ;MSPEED value for 9600
ENDIF ;DBDRT8
;
IF DBDRT9
DEFBD: EQU 7FH ;baud rate register value for 19,200
DEFMSPD: EQU 9 ;MSPEED value for 19,200
ENDIF ;DBDRT9
;
SMODEM EQU YES ;if using Smartmodem
;
;
;
; The Advantage uses the 8251
;
;
ORG 100H
;
DS 3 ;(for "JMP START" instruction)
;
PMMIMODEM: DB NO ;yes=PMMI S-100 Modem 103H
IF SMODEM
SMARTMODEM: DB YES ;yes=HAYES Smartmodem, no=non-Hayes 104H
ENDIF ;SMODEM
IF NOT SMODEM
SMARTMODEM: DB NO ;yes=Hayes Smartmodem, no=non-Hayes 104H
ENDIF ;SMODEM
TOUCHPULSE: DB 'P' ;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 YES ;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 YES ;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 YES ;yes=checks 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 125H
EXTCHR: DB '^'-40H ;^^ = Send next character 126H
;
;
DS 2 ; 128H
;
IN$MODCTL1: IN MODCTL1 ;in modem control port 12AH
RET
DS 7
OUT$MODDATP: OUT MODDATP ;out modem data port 134H
RET
DS 7
IN$MODDATP: IN MODDATP ;in modem data port 13EH
RET
DS 7
ANI$MODRCVB: ANI MODRCVB ;bit to test for receive ready 148H
RET
;
CPI$MODRCVR: CPI MODRCVR ;value of rcv. bit when ready 14BH
RET
;
ANI$MODSNDB: ANI MODSNDB ;bit to test for send ready 14EH
RET
;
CPI$MODSNDR: CPI MODSNDR ;value of send bit when ready 151H
RET
DS 12
;
DS 2 ;not used by MEX 160H
DS 6 ; 162H
JMP$GOODBYE: JMP GOODBYE ; 168H
JMP$INITMOD: JMP INITMOD ;go to user written routine 16BH
JMP$NEWBAUD: JMP NEWBAUD ;change baud rate 16EH
RET ;(by-passes PMMI routine) 171H
NOP
NOP
RET ;(by-passes PMMI routine) 174H
NOP
NOP
JMP$SETUPR: JMP SETUPR ; 177H
DS 3 ;not used by MEX 17AH
JMP$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
;
;
CLREOS: LXI D,EOSMSG
MVI C,PRINT
CALL MEX
RET
;
CLRSCRN: LXI D,CLSMSG
JMP CLREOS+3
;
;
SYSVER: MVI C,ILP
CALL MEX
DB 'Version for North Star Advantage - Slot ',SLOT+30H
DB CR,LF
IF SMODEM
DB 'with Hayes Smartmodem'
DB CR,LF
ENDIF
DB 'Default Baud Rate: '
IF DBDRT1
DB RON,'300',ROFF
ENDIF
IF DBDRT3
DB RON,'600',ROFF
ENDIF
IF DBDRT5
DB RON,'1200',ROFF
ENDIF
IF DBDRT6
DB RON,'2400',ROFF
ENDIF
IF DBDRT7
DB RON,'4800',ROFF
ENDIF
IF DBDRT8
DB RON,'9600',ROFF
ENDIF
DB ' baud'
DB 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) if using the Hayes Smartmodem
; or by address 0C00H (2659 bytes available) otherwise.
;
;-----------------------------------------------------------------------
; This routine allows a 300 ms. break tone to be send to reset some
; time-share computers.
;
SENDBRK: MVI A,08H ;send a break tone for 300 ms.
JMP GOODBYE1
;.....
;
;
; This routine sends a 300 ms. break tone and sets DTR low for the same
; length of time to disconnect some modems such as the Bell 212a, etc.
;
GOODBYE: MVI A,0AH ;set break, DTR low
;
GOODBYE1: OUT MODCTL1 ;put command register out of mode
IN MODCTL1 ;make sure it is now clear
IN MODCTL1 ;try once more
MVI B,3 ;delay for 300 ms.
MVI C,TIMER
CALL MEX
MVI A,37H ;reset RTS, flags, DTR low, enable R/T
OUT MODCTL1 ;send to command register
IN MODCTL1 ;clear any incoming chars.
IN MODCTL1 ;try once more
XRA A ;clear the 'A' reg.
RET
;.....
;
;
; The following are used in setting up the modem port.
; Since N/S Bios only initializes the first 3 ports, the
; 8251 for the selected slot is initialized.
;
INITMOD: LXI H,INITSTR ;point to initialization string
LXI B,5*256+PORT+1 ;B=count, C=UART cmd port
DB 0EDH,0B3H ;Z-80 OTIR instruction
MVI A,DEFBD ;start at default baud rate
OUT BAUDRP ;send to baud rate port
MVI A,DEFMSPD ;default xfer time to default baud rate
STA MSPEED
IN MODCTL1 ;clear any incoming chars.
IN MODCTL1 ;try once more
XRA A ;clear the 'A' reg.
RET
INITSTR: DB 80H,80H ;fillers to ensure known state
DB 040H ;internal reset
DB 04EH ;1 stop bit, 8 data bits, no parity
;16x clock
DB 037H ;TX on, RX on, DTR low, RTS low
;reset errors
;.....
;
;
; The following changes the baud rate with the set command.
;
SETUPR: MVI C,SBLANK ;any arguments?
CALL MEX
JC TELL ;if not, go display baud rate
LXI D,CMDTBL
MVI C,LOOKUP
CALL MEX ;parse agrument
PUSH H ;save any arg 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 '++ Incorrect Entry ++',CR,LF,BELL,0
RET
CMDTBL: DB '30','0'+80H
DW OK300
DB '60','0'+80H
DW OK600
DB '120','0'+80H
DW OK1200
DB '240','0'+80H
DW OK2400
DB '480','0'+80H
DW OK4800
DB '960','0'+80H
DW OK9600
DB '1920','0'+80H
DW OK19200
;
TELL: MVI C,ILP
CALL MEX
DB CR,LF,'Baud rate is now: ',0
LDA MSPEED
MVI C,PRBAUD
CALL MEX
RET
OK300: MVI A,1
LHLD BD300
JMP LOADBD
OK600: MVI A,3
LHLD BD600
JMP LOADBD
OK1200: MVI A,5
LHLD BD1200
JMP LOADBD
OK2400: MVI A,6
LHLD BD2400
JMP LOADBD
OK4800: MVI A,7
LHLD BD4800
JMP LOADBD
OK9600: MVI A,8
LHLD BD9600
JMP LOADBD
OK19200: MVI A,9
LHLD BD19200
LOADBD: STA MSPEED ;set xfer time
MOV A,L ;get least significant baud rate byte
OUT BAUDRP ;set baud rate
RET
NEWBAUD: CPI 1
JZ OK300
CPI 3
JZ OK600
CPI 5
JZ OK1200
CPI 6
JZ OK2400
CPI 7
JZ OK4800
CPI 8
JZ OK9600
CPI 9
JZ OK19200
RET
;.....
;
;
; Table of baudrate parameters for N/S SIO board
;
BD300: DW 0040H
BD600: DW 0060H
BD1200: DW 0070H
BD2400: DW 0078H
BD4800: DW 007CH
BD9600: DW 007EH
BD19200: DW 007FH
;
BAUDBUF: DB 10,0
DS 10
;
;-----------------------------------------------------------------------
;
; The following routine could be used to display selections of interest
; to owners of this computer. If using the Hayes Smartmodem this is
; unavailable without a special change.
;
SPCLMENU: RET
;
EOSMSG: DB 15,0,0,0,0,'$' ;clear to eos for N/S Advantage
CLSMSG: DB 30,15,0,0,0,'$' ;clear screen (home and clear eos)
;-----------------------------------------------------------------------
;
;
; NOTE: MUST TERMINATE PRIOR TO 0400H (with Smartmodem)
; 0C00H (without Smartmodem)
;
END
;