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MXO-CZ10.ASM
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Assembly Source File
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2000-06-30
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10KB
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363 lines
; MEX OVERLAY FOR INTERCONTINENTAL MICROSYSTEMS CPZ-4800X
;
REV EQU 10
;
; MXO-CZ10.ASM -- MEX Overlay for CPZ-48000 01/04/86
;
; This overlay will set baud rate from set command and from the phone
; library, disconnect the modem, and send break. The overlay assumes
; the terminal is on channel 1 and the modem is on channel 0.
;
; Calling conventions for the various overlay entry points are detailed more
; fully in the PMMI overlay (MXO-PMxx.ASM, where xx=revision number)
;
; 01/04/86 INITIALLY WRITTEN [ESKAY] (template used was MXO-SS10)
;
; MEX service processor functions:
;
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 ;BDOS/MEX print-string function call
;
BELL EQU 7 ;bell
TAB EQU 9
CR EQU 13 ;carriage return
LF EQU 10 ;linefeed
ESC EQU 1BH ;escape
YES EQU 0FFH
NO EQU 0
;
;
; DEFINE WHICH PORT TO USE FOR MEX - DEFINE ONLY ONE!!!!
PORT0 EQU YES
PORT1 EQU NO
;
; port equates
;
CMNDA EQU 81H ; COMMAND PORT CHANNEL 0
CMNDB EQU 83H ; COMMAND PORT CHANNEL 1
;
IF PORT0
SPORT EQU CMNDA ; STATUS PORT
DPORT EQU CMNDA-1 ; DATA PORT
ENDIF
IF PORT1
SPORT EQU CMNDB ; STATUS PORT
DPORT EQU CMNDB-1 ; DATA PORT
ENDIF
;
RDA EQU 1 ; RECEIVE DATA AVAILABLE
TBE EQU 4 ; TRANSMIT BUFFER EMPTY
;
; Baud rate parameters
;
TCH0 EQU 0B0H ; TIMER CHANNEL 0
TCH1 EQU 0B1H ; TIMER CHANNEL 1
TCMND EQU 0B3H ; TIMER COMMAND PORT
CHAMD EQU 36H ; CHANNEL 0 MODE
CHBMD EQU 76H ; CHANNEL 1 MODE
;
IF PORT0
CHMD EQU CHAMD
TCHN EQU TCH0
ENDIF
IF PORT1
CHMD EQU CHBMD
TCHN EQU TCH1
ENDIF
;
CLK EQU 24576/16 ; CRYSTAL FREQUENCY DIV 16
B38400 EQU CLK/384 ; 38K BAUD
B19200 EQU CLK/192 ; 19K BAUD
B9600 EQU CLK/96 ; 9600 BAUD
B4800 EQU CLK/48 ; 4800 BAUD
B2400 EQU CLK/24 ; 2400 BAUD
B1200 EQU CLK/12 ; 1200 BAUD
B600 EQU CLK/6 ; 600 BAUD
B300 EQU CLK/3 ; 300 BAUD
;
ORG 100H
;
; Change the clock speed to suit your system
;
DS 3 ;(for "JMP START" instruction)
DB NO ;yes=PMMI S-100 Modem 103H
DB NO ;yes=HAYES Smartmodem, no=non-PMMI 104H
DB 'T' ;T=touch, P=pulse (Smartmodem-only) 105H
CLOCK: DB 60 ;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
COLUMS: DB 5 ;number of DIR columns shown 10AH
SETFLG: DB YES ;yes=user-added Setup routine 10BH
SCRTST: DB NO ;Cursor control routine 10CH
DB YES ;yes=resend a record after any non-ACK 10DH
;no=resend a record after a valid-NAK
BAKFLG: DB YES ;yes=change any file same name to .BAK 10EH
CRCDFL: DB YES ;yes=default to CRC checking 10FH
TOGCRC: DB YES ;yes=allow toggling of CRC to Checksum 110H
CVTBS: DB NO ;yes=convert backspace to rub 111H
TOGLBK: 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)
TOGLF: DB YES ;yes=allow toggling of LF after CR 114H
DB YES ;yes=allow transmission of logon 115H
;write logon sequence at location LOGON
SAVCCP: DB YES ;yes=do not overwrite CCP 116H
DB NO ;yes=local command if EXTCHR precedes 117H
;no=external command if EXTCHR precedes
DB YES ;yes=allow toggling of LOCONEXTCHR 118H
LSTTST: DB YES ;yes=printer available on printer port 119H
XOFTST: DB NO ;yes=checks for XOFF from remote while 11AH
;sending a file in terminal mode
XONWT: DB NO ;yes=wait for XON after CR while 11BH
;sending a file in terminal mode
TOGXOF: DB YES ;yes=allow toggling of XOFF checking 11CH
IGNCTL: DB YES ;yes=CTL-chars above ^M not displayed 11DH
EXTRA1: DB 0 ;for future expansion 11EH
EXITCHR DB 'E'-40H ;^E = Exit to main menu 11FH
BRKCHR: DB '@'-40H ;^@ = Send 300 ms. break tone 120H
NOCONN: 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
TRNCHR: DB 'T'-40H ;^T = Transmit file to remote 125H
SAVCHR: DB 'Y'-40H ;^Y = Open input text buffer 126H
EXTCHR: DB '^'-40H ;^^ = Send next character 127H
DS 2 ;unused by MEX 128H
;
INCTL1: IN SPORT
RET
DS 7
;
OTDATA: OUT DPORT
RET
DS 7
;
INPORT: IN DPORT ;input data port 13EH
RET
DS 7
;
MASKR: ANI RDA ! RET ;bit to test for receive ready 148H
TESTR: CPI RDA ! RET ;value of rcv. bit when ready 14BH
MASKS: ANI TBE ! RET ;bit to test for send ready 14EH
TESTS: CPI TBE ! RET ;value of send bit when ready 151H
DS 14 ; 156H
;
;
DS 3 ;DIALV: not done here (maybe MXO-SM) 162H
DISCV: JMP DISCON ;disconnect
GOODBV: JMP GOODBY ; 168H
INMODV: JMP NITMOD ;go to user written routine 16BH
JMP PBAUD ;NEWBDV 16EH
RET ! NOP ! NOP ;NOPARV 171H
RET ! NOP ! NOP ;PARITV 174H
SETUPV: JMP SETCMD ; 177H
DS 3 ;not used by MEX 17AH
VERSNV: JMP SYSVER ; 17DH
BREAKV: JMP SBREAK ; 180H
;
; Do not change the following six lines (they provide access to routines
; in MEX that are present to support MDM7 overlays -- they will likely
; be gone by MEX v2.0).
;
ILPRTV: DS 3 ; 183H
INBUFV DS 3 ; 186H
ILCMPV: DS 3 ; 189H
INMDMV: DS 3 ; 18CH
DS 3 ; 18FH
TIMERV DS 3 ; 192H
;
; Routine to clear to end of screen. If using CLREOS and CLRSCRN, set
; SCRTEST to YES at 010AH (above).
;
CLREOS: LXI D,EOSMSG ; 195H
MVI C,PRINT
CALL MEX
RET
;
CLS: LXI D,CLSMSG ; 19EH
MVI C,PRINT
CALL MEX
RET
; 1A7H
;
; end of fixed area
;
SYSVER: MVI C,ILP ;in-line print
CALL MEX
DB 'ICM CPZ-4800x [ESKAY] V'
DB REV/10+'0'
DB '.'
DB REV MOD 10+'0'
DB CR,LF,0
RET
;
; Routine to exit just prior to exit-to-cpm
;
GOODBY: RET ;not done here
;
; Send break to remote
;
SBREAK: RET ; NOT IMPLEMENTED
;
; INITIALIZE PORT
;
NITMOD: LXI H,NITTB0
MVI B,7 ; 7 BYTES
CALL SETMOD
LDA MSPEED
JMP PBAUD
;
; Disconnect the modem
;
DISCON: LXI H,DTROFF
MVI B,2
CALL SETMOD
MVI B,3 ;turn off DTR for 300 ms.
MVI C,TIMER
CALL MEX
LXI H,DTRON
MVI B,2
;
SETMOD: MVI C,SPORT
DB 0EDH,0B3H ; OTIR
RET
;
DTROFF: DB 05H,06AH
DTRON: DB 05H,0EAH
NITTB0: DB 18H,04H,4CH,03H,0C1H,05H,0EAH
;
SETCMD: MVI C,SBLANK ;any arguments?
CALL MEX
JC BDSHOW ;if not, go display baud
LXI D,CMDTBL
MVI C,LOOKUP
CALL MEX ;parse argument
PUSH H ;save any parsed argument adrs on stack
RNC ;if we have one, return to it
POP H ;oops, input not found in table
SETERR: MVI C,ILP ;inline print
CALL MEX
DB CR,LF,'SET command error',CR,LF,0
RET
;
; Argument table
;
CMDTBL: DB '?'+80H ;help
DW STHELP
DB 'BAU','D'+80H ;"set baud"
DW STBAUD
DB 0 ;<<=== table terminator
;
; "SET ?" processor
;
STHELP: MVI C,ILP ;inline print
CALL MEX
DB CR,LF,'SET BAUD <rate>'
DB CR,LF
DB CR,LF,'Baud rate is one of:'
DB CR,LF,' 300 600 1200 2400 4800 9600 19200 38400'
DB CR,LF,0
RET
;
; "SET BAUD" processor
;
STBAUD: MVI C,BDPARS ;function code: parse a baudrate
CALL MEX ;let MEX look up code
JC SETERR ;jump if invalid code
CALL PBAUD ;no, try to set it
JC SETERR ;if not one of ours, bomb out
BDSHOW: MVI C,ILP ;inline print
CALL MEX ;display baud
DB 'Baud: ',0
LDA MSPEED ;get current baud rate
MVI C,PRBAUD ;let MEX print it
JMP MEX
;
;
; This routine sets baud rate passed as MSPEED code in A.
; Returns CY=1 if baud rate not supported (if supported,
; this routine must set the new MSPEED code).
;
PBAUD: PUSH H ;don't alter anybody
PUSH D
PUSH B
MOV E,A ;MSPEED code to DE
MVI D,0
LXI H,BAUDTB ;offset into table
DAD D
DAD D
MOV A,M ;fetch code
INX H
MOV H,M
MOV L,A
ORA H ;0? (means unsupported code)
STC ;prep carry in case unsupported
JZ PBEXIT ;exit if bad
IF PORT0
MVI A,CHMD
OUT TCMND
MOV A,L
OUT TCHN
MOV A,H
OUT TCHN
MOV A,E
STA MSPEED ;set it
ORA A ;return no-errors
PBEXIT: POP B
POP D
POP H
RET
;
BAUDTB: DW 0 ;110 (not supported)
DW B300 ;300
DW 0 ;450 (not supported)
DW B600 ;600
DW 0 ;710 (not supported)
DW B1200 ;1200
DW B2400 ;2400
DW B4800 ;4800
DW B9600 ;9600
DW B19200 ;19200
DW B38400 ;38400
;
;
; Clear-to-end-of-screen and clear-screen sequences
;
EOSMSG: DB ESC,'Y','$'
CLSMSG: DB 26,'$'
;
;
END
int it
JMP MEX
;
;
; This routine sets baud rate passed as MSPEED code in A.
; Returns CY=1 if baud rate no