-; CPSDAT.ASM
-; KERMIT - (Celtic for "FREE")
-;
-; This is the CP/M-80 implementation of the Columbia University
-; KERMIT file transfer protocol.
-;
-; Version 4.0
-;
-; Copyright June 1981,1982,1983,1984,1985
-; Columbia University
-;
-; Originally written by Bill Catchings of the Columbia University Center for
-; Computing Activities, 612 W. 115th St., New York, NY 10025.
-;
-; Contributions by Frank da Cruz, Daphne Tzoar, Bernie Eiben,
-; Bruce Tanner, Nick Bush, Greg Small, Kimmo Laaksonen, Jeff Damens, and many
-; others.
-;
-; Pure and impure data areas. Previously of CPSUTL.ASM
-;
-; revision history:
-;
-;edit 19, 29-Mar-1991 by MF. Add flag "initak" (nonzero) which is cleared
-; after the initial automatic TAKE attempt of KERMIT.INI to allow
-; "unable to find file" complaints if not doing that initial TAKE.
-;edit 18, 21-Mar-1991 by MF. Renamed parameter vermin to revno (revision
-; level) since verno is already known as the "minor version number".
-;edit 17, 27-Feb-1991 by MF. Corrected typeo in "inms19" and commented out
-; "typptr" pointer as the TYPE command now uses the big buffer.
-; Also provided for a "minor version number" (1-26=A-Z) and message to
-; facilitate display of Kermit version in VERSION command (modmsg)
-;edit 16, 12-Feb-1991 by MF. Eliminated storage (message and variable)
-; for case sensitivity by commenting it out.
-;edit 15, 9-Dec-1990 by MF. Modified message for "directory file size"
-; status report to make it clearer when spoken by a speech synthesizer.
-;edit 14, 4-Dec-1990 by MF. Added message for Autoreceive status report.
-;edit 13, 30-Nov-1990 by MF. Added messages to display regular/quiet status
-; of terminal in SHOW and STATUS commands.
-;edit 12, 8-Nov-1990 by MF. Added a new message for Set Autoreceive.
-;edit 11, 2-Nov-1990 by MF. Moved overlay address to 7000H -- I didn't
-; realize I was **that** close to the limit until I made a couple of
-; cosmetic changes and REM CD bombed. This is still ver. 4.10 as it
-; hasn''t been released yet.
-;edit 10, 1-Nov-1990 by MF. Changed message at "spdst" to conform with
-; the change of "SET BAUD-RATE" to "SET SPEED".
-; Also added message "sdpst2" for speed status (staspd) routine
-;edit 9, 17-Oct-1990 by MF. Changed "packet-size" messages to use the
-; word "length" to conform with the nomenclature suggested in the
-; 6th edition of the Kermit Protocol Manual.
-;edit 8, 19-Sep-1990 by MF. Added error message for FRENAME command.
-;edit 7, 14-Sep-1990 by MF. Added storage/strings for SET COLLISION command.
-; Also added strings/storage for SET INCOMPLETE-FILE command.
-;edit 6, 9-Sep-1990 by MF. Added messages and storage for Remote commands.
-; and display of packet sizes
-; Moved overlay address to 06C00H for Version 4.10.
-; edit 5, 8 April, 1987 by OBSchou. Added new entry in jump table to call
-; code for an external terminal type. Added some new error messages
-; and added more to the packet space.
-;
-; edit 4, 30 March by OBSchou. Added in space for autoreceive.
-;
-; edit 3, 19 March, 1987 by OBSchou. Added some more strings etc, and
-; increased the stack space fro 32 entries to 64.
-;
-; edit 2, 11 March, 1987 by OBSchou.
-; Added in some more data and strings and things. Nothing special
-;
-; edit 1, 28 January, 1987 by OBSchou
-; Following file the data section of CPSUTL.ASM. This part of the
-; CPSUTL.ASM file now seperate as it ws getting too larg. Link to here
-; from CPSUTL.ASM (which now has only the utlity routines).
-; Also added in bits submitted by Dave Roberts of Leicester:
-; DJR 18th January 1987 - David J. Roberts.
-; Support for cosmetic changes in CPSMIT:
-; New strings DBGST and CURDST
-; CRLF in front of TIMMSG
-; LOGST changed, and new LOGST2
-;
-;
-datver: db 'CPSDAT.ASM (19) 29-Mar-1991$'
-
-
-
-;\f
-
-version:db 'Kermit-80 v4.'
- db (verno/10) + '0' ; tenth's digit of version number
- db (verno MOD 10) + '0' ; hundredth's digit
-IF revno ;[MF]If a revision level,
- db revno+'@' ;[MF]put it in (range 1-26=A-Z)
-ENDIF ;revno [MF]
- db ' $'
-modmsg: db ' has been built from the following modules:$';[MF]
-kerm: db 'Kermit-80 '
-kerm1: db 'nnx:>$' ;'x' filled in at startup with DRIVE name
- ;'nn filled at startup and user with user number
-crlf: db cr,lf,'$'
-ermes1: db cr,lf,'?Unrecognized command$'
-ermes3: db cr,lf,'?Not confirmed$'
-ermes4: db '?Unable to receive initiate',cr,lf,'$'
-ermes5: db '?Unable to receive file name',cr,lf,'$'
-ermes6: db '?Unable to receive end of file',cr,lf,'$'
-erms10: db '?Unable to receive data',cr,lf,'$'
-erms11: db '?Disk full',cr,lf,'$'
-erms12: db '?Directory full',cr,lf,'$'
-erms14: db '?Unable to receive an acknowledgement from the host',cr,lf,'$'
-erms15: db cr,lf,'?Unable to find file',cr,lf,'$'
-erms16: db '?Unable to rename file$'
-erms17: db cr,lf,'?Disk full$'
-erms18: db cr,lf,'?Unable to tell host that the session is finished$'
-erms19: db cr,lf,'?Unable to tell host to logout$'
-erms20: db cr,lf,'?Kermit has not been configured for a target system$'
-erms21: db cr,lf,'?Consistency check on configuration failed$'
-erms22: db cr,lf,'?Error writing to log file',cr,lf,'$' ;[pcc005]
-erms23: db cr,lf,'?Invalid user number$'
-erms24: db cr,lf,'?Invalid Pause parameter$'
-erms25: db cr,lf,'?Invalid BUFFER-SIZE parameter$'
-erms26: db cr,lf,'?Invalid packet length (too long)$'
-erms27: db cr,lf,'?Invalid Checktype$'
-erms28: db cr,lf,'?Too many retries$'
-erms29: db cr,lf,'?Failed to exchange parameters$'
-erms30: db cr,lf,'?Failed to receive input string in alloted time$'
-erms31: db cr,lf,'?File already exists$' ;[MF]
-
-infms3: db bell,'Completed$'
-infms4: db bell,'Failed$'
-infms5: db '%Renaming file to $'
-infms6: db cr,lf,'[Closing the log file]$'
-infms7: db cr,lf,'[Connected to remote host. Type $'
-infms8: db 'C to return;',cr,lf,' type $'
-inms8a: db '? for command list]',cr,lf,'$'
-infms9: db cr,lf,'[Connection closed, back at micro]$'
-inms10: db 'Control-$'
-inms11: db ' Not implemented.$'
-inms12: db ' (Not implemented)',cr,lf,'$'
-inms13: db bell,'Interrupted$'
-inms14: db TAB,TAB,' Directory for drive '
-dnam14: db 'nnx:',cr,lf,'$' ;filled in by dir routine.
-inms15: DB CR,LF,TAB,TAB,'Drive $'
-inms16: DB ' has $';filled in by summary code with drive letter
-inms17: DB 'K bytes free',CR,LF,'$'
-inms18: DB CR,LF,'File(s) erased$',CR,LF
-inms19: db cr,lf,'[Transmitting file to host:'
- db cr,lf,' 1. Lines automatically sent, and wait for possible reply'
- db cr,lf,' 2. CONTROL-C aborts transfer'
- db cr,lf,' 3. If transfer hangs, try a return to continue'
- db cr,lf,' 4. on exit, you will be placed in CONNECT state.'
- db cr,lf,'$'
-inms20: db 'R to send the same line again,'
- db cr,lf,' or type $'
-inms21: db 'C to abort transmission.]',cr,lf,'$'
-inms22: db cr,lf,'[Transmission done. Connected normally '
- db 'to remote host,'
- db cr,lf,' type $'
-inms23: db 'Sending...$'
-inms24: db 'Receiving...$'
-inms25: db bell,'Warning: eighth bit cannot be sent$'
-inms26: db cr,lf,'For help, type ? at any point in a command$'
-inms27: db cr,lf,'[Logging suspended]',cr,lf,'$' ;[pcc003]
-inms28: db cr,lf,'[Logging resumed]',cr,lf,'$' ;[pcc003]
-inms29: db cr,lf,'[Transmission Aborted. Connected normally '
- db 'to remote host,'
- db cr,lf,' type $'
-autmes: db cr,lf,cr,lf,'[Automatically receiving; type ^C to abort]'
- db cr,lf,cr,lf,'$' ;[MF]
-anymes: db cr,lf,cr,lf,' * * * Press any key to continue * * * '
- db cr,lf,cr,lf,'$'
-escmes: db cr,lf,'Type the new escape character: $'
-tacmes: db cr,lf,'Type the new TAC intercept character: $'
-sopmes: db cr,lf,'Give the start-of-packet character: $' ;[gnn]
-padcms: db cr,lf,'Type the new padding character: $' ;[obs]
-xmthlp: db cr,lf,'R Send the same line again$'
-loghlp: db cr,lf,'Q Suspend logging' ;[pcc003]
- db cr,lf,'R Resume logging$' ;[pcc003]
-inthlp: db cr,lf,'? This message'
- db cr,lf,'C Close the connection'
- db cr,lf,'0 (zero) Transmit a NULL'
- db cr,lf,'P Toggle printer on/off' ;[pcc002]
- db cr,lf,'S Status of the connection$'
-inhlp1: db cr,lf,'Typing another $'
-inhlp2: db ' will send it to the host'
- db cr,lf,cr,lf,'Command>$'
-
-xmtst: db cr,lf,'Transmitting a file$'
-autrst: db cr,lf,'Autoreceive is$'
-locst: db cr,lf,'Local echo$'
-onstr: db ' on$'
-offstr: db ' off$'
-flost: db cr,lf,'Flow control$'
-;senst: db cr,lf,'Case sensetivity$'
-vtdpst: db cr,lf,'Terminal display is $'
-vtdpsr: db 'REGULAR$'
-vtdpsq: db 'QUIET$'
-vtemst: db cr,lf,'Terminal emulation is $'
-cpmst: db cr,lf,'File Mode$'
-defstr: db ' default$'
-ascstr: db ' ASCII$'
-binstr: db ' binary$'
-hfsod: db cr,lf,'Display file size on DIRECTORY command$'
-ibmst: db cr,lf,'IBM flag$'
-incst: db cr,lf,'Disposition for incomplete files is$'
-dscstr: db ' discard$'
-kepstr: db ' keep$'
-filst: db cr,lf,'File warning$'
-prst: db cr,lf,'Printer copy$'
-logst: db cr,lf,'Logging to $' ;[pcc003][DJR]
-logst2: db ' is$' ;[DJR]
-susstr: db ' suspended$' ;[pcc003]
-sspmsg: db cr,lf,'SEND start-of-pkt char ^$' ;[gnn]
-rspmsg: db cr,lf,'RECEIVE start-of-pkt char ^$' ;[gnn]
-spsmsg: db cr,lf,'SEND packet length $' ;[MF]
-rpsmsg: db cr,lf,'RECEIVE packet length $' ;[MF]
-escst: db cr,lf,'Escape char: $'
-bufsz1: db cr,lf,'Multi-sector buffering at $'
-bufsz2: db ' of a maximum of $'
-xmitst: db cr,lf,'Transmit protocol char: $'
-bckst: db cr,lf,'Block check type: $'
-bckst1: db '-character$'
-collst: db cr,lf,'File COLLISION: $';[MF]
-parst: db cr,lf,'Parity: $'
-pnonst: db 'none$'
-pmrkst: db 'mark$'
-pspcst: db 'space$'
-poddst: db 'odd$'
-pevnst: db 'even$'
-porst: db cr,lf,'Port in use is: $'
-spdst: db cr,lf,'Current speed is: $'
-spdst2: db ' bps$' ;[MF]
-spdust: db 'indeterminate (not SET)$'
-timmsg: db cr,lf,'Timer$' ;[DJR] Added CRLF like the others
-tacst: db cr,lf,'Current TACTrap Status/Intercept Character: $'
-usrst: db cr,lf,'Current user number: $'
-dbgst: db cr,lf,'Debugging$' ;[DJR]
-curdst: db cr,lf,'Current default disk: $' ;[DJR]
-spac15: db ' $' ; *** 15 spaces ***
-samems: db cr,lf,'?Source and destination files the same$'
-nofile: db cr,lf,'?File not found$'
-cmer00: db cr,lf,'?Program error: Invalid COMND call$'
-cmer01: db cr,lf,'?Ambiguous$'
-cmer02: db cr,lf,'?Illegal CP/M file specification$'
-cmer03: db cr,lf,'?Wild-cards not allowed in file specification$' ;[pcc006]
-cmer04: db cr,lf,'?Invalid user number$'
-cmer05: db cr,lf,'?Invalid \ parameter$'
-cmin00: db ' Confirm with carriage return$'
-cmin01: db ' Enter a number$'
-cmin02: db ' Confirm with carriage return or enter more$'
-
-; Diagnostic messages
-sstatm: db '<SState:> ',0
-rstatm: db '<RState:> ',0
-spackm: db '<Data transmitted> ',0
-rpackm: db '<Data received > ',0
-princr: db cr,lf,0
-;
-; Remote command messages [MF]
-;
-newfms: db cr,lf,'New file: $'
-pswdms: db cr,lf,'Password: $'
-acctms: db cr,lf,'Account: $'
-newnms: db cr,lf,'New name: $'
-msgms: db cr,lf,'Message: $'
-optms: db cr,lf,'Options: $'
-
-;\f
- ;Impure data
-
-;COMND storage
-
-comchr: ds 1 ;[8] save space
-floctl: db 0 ;[8] flow control on/off flag
-;casens: db 0 ;[8] Upper/lower case sensitive
-cmstat: ds 1 ;What is presently being parsed.
-cmaflg: ds 1 ;Non-zero when an action char has been found.
-cmbflg: ds 1 ;[MF]Nonzero to allow a blank initial keyword
-cmqflg: ds 1 ;[MF]Nonzero to prevent character echoing
- ;[MF]when entering commands
-cmccnt: ds 1 ;Non-zero if a significant char is found.
-cmsflg: ds 1 ;Non-zero when the last char was a space.
-cmostp: ds 2 ;Old stack pointer for reparse.
-cmrprs: ds 2 ;Address to go to on reparse.
-cmprmp: ds 2 ;Address of prompt.
-cmptab: ds 2 ;Address of present keyword table.
-cmhlp: ds 2 ;Address of present help.
-cmdbuf: ds 80H ;Buffer for command parsing.
-cmbufl equ $-cmdbuf-3 ; set a limit on the command buffer
-cmfcb: ds 2 ;Pointer to FCB.
-cmfcb2: ds 2 ;Pointer to position in FCB.
-cmfwld: ds 1 ;Wildcard flag
-cmcptr: ds 2 ;Pointer for next char input.
-cmdptr: ds 2 ;Pointer into the command buffer.
-cmkptr: ds 2 ;Pointer to keyword.
-cmsptr: ds 2 ;Place to save a pointer.
-slshsn: db 0 ; slash seen in command line
-slashc: db 0 ; count for number of characters in slash sequence
-slashn: db 0 ; number to be built for \xxx
-;\f
-oldsp: ds 2 ;Room for old system stack.
- ds 80H ;Room for 64 levels of calls.[obs]
-stack: ds 2
-eoflag: ds 1 ;EOF flag;non-zero on EOF.
-curdsk: db 0 ;holds "logged" disk
-curusr: db 0 ;[8] holds "user" number
-rcvsop: db SOH ;[gnn] receive start-of-packet
-sndsop: db SOH ;[gnn] send start-of-packet
-prtcnt: db 0 ;[pcc008] prtchr fairness count
-timflg: db 0 ;[jd] timer flag: 0 -> no timer
-timval: dw 0 ;[jd] timer value
-wrn8: db 0 ;[jd] non-zero if 8-bit-lost warning sent
-qbchr: db '&' ;[jd] binary quote character.
-quot8: db 0 ;[jd] non-zero if doing 8-bit quoting
-logflg: db 0 ;Flag for a log file.
- ;[pcc005] 0 = no log
- ;[pcc005] x1 = logging on
- ;[pcc005] x2 = suspended
- ;[pcc005] 8xH (bit 7) = file open
-lognam: db 0 ;[pcc013] File to use for session logging
- db 'KERMIT ' ;[pcc013]
- db 'LOG' ;[pcc013]
-nexitf: db 0 ; set to 1 for exit to CPM after command tail
-takflg: db 0 ;[8] TAKE flag.
- ; Bit zero = 1 for take file in progress
- ; bit 4 = 1 if command line present/in progress
- ; Note: Take has priority over command line.
-initak: db 0ffh ;[MF]Cleared after initial TAKE (KERMIT.INI)
-taknam: db 0 ;[8] use default drive
- db 'KERMIT '
- db 'INI' ;[8] Inital file to TAKE KERMIT.INI
-takptr: ds 2 ;[8] Pointer to position in TAKE file input
-takfcb: ds 12 ;[8] fcb space for take file
- dw 0 ;[8] fill up extents etc with 00
- dw 0
- ds 16 ;[8] used by dos
- dw 0
- dw 0
-takdma: ds 128 ;[8]space to read TAKE file...
-prnbuf: ds 1 ; printer buffer. Output pointer
- ds 1 ; input offset pointer
- ds 256 ; give a large buffer
- ds 10 ; and a little spare
-;
-;
-;
-; Transmit space
-;
-repcnt: db 0 ; repeat counter
-starc: db 0 ; star count
-rexbfl: db 0 ; retransmit flag (1=> retransmit)
-rexcnt: db 0 ; retransmit character count
-rexbuf: ds 128 ; max retransmit line length 128 characters
-xmtbuff:
- ds 128 ; 128 byte sector buffer
-xmtptr: db 0 ; offset pointer to xmtbuff above
-xmtfcb: ds 36 ; fcb for transmit file.
-;
-;INPUT and STRING space
-strlen: db 0 ; length of the string from INPUT and STRING
-
-; Assorted other space
-errorc: db 0 ; error level set to xxx
-errorl: db 0 ; error level to test against
-
-remtxt: db 0 ; set <> 0 if D packets to screen
-
-hosths: ds 1 ; have we told the host to xoff? (is this duplicated)
-stbuff: ds 80h ; some space or the string buffer
-waitp: ds 2 ; wait command timer
-waitp1: ds 2 ; wait/input timer (copy of waitp)
-prntmp: ds 1 ; temporary space to put the caracter to print
-prnfl: db 0 ; printer flag. Used by TYPE/PRINT
-;[MF][17]Following line no longer needed as TYPE uses the big buffer
-;typptr: ds 2 ; pointer used by TYPE/PRINT
-equflg: db 0 ; set to non zero if copy files same
-nquiet: db 0 ; If non zero print from NOUT to display
-
-escflg: db 0 ;Escape flag (start off).
-fileio: db 0 ;Line-by-line from file (default off).
-xofflg: db 0 ;X-OFF (=^S) received from COMM-line
- ;X-ON (=^Q) received resets this
-clkbit: dw 0 ; 32 bit pseudo clock
- dw 0 ; MS bits of clock
-number: ds 2 ; Number in binary form from user input
-initflg:db 0 ; set to non zero when system initialised
-maxbsc: ds 1 ; save space to know how big system allows
- ; for multi-sector buffering. (Usually 8k?)
-;
-; Multiple FCB storage space. Used for the DIR command
-; Later on, I want to shift this into space after the system
-; dependent stuff, but then it becomes messy with pointers
-; to pointers etc... [OBS]
-;
-xfcbptr:
- ds 2 ; pointer to current fcb space
-fcbcnt: ds 1 ; Number of valid fcbs in space
-;
-fcb0: ds 12 ; 36 bytes requred for a single fcb
-fcblen EQU $-fcb0 ; length of a single fcb
- ds maxfcb*fcblen ; space for maximum fcbs + 1
-;
-hidefs: db 0ffh ; flag <> 0 if we show file size in DIR
-
-; FCB sapce for COPY command
-cfcbs: ds 33 ; source fcb for copy file ops.
- ;[MF]and FRENAME ops.
-cfcbd: ds 33 ; destination fcb for copy ops.
- ;[MF]and FRENAME ops.
-
-colfcb: ds 33 ;[MF]Rename fcb for SET COLLISION
-
-; Command tail data space etc
-cbptr: db 2 ; command tail pointer (0= length of tail)
-cbuff: ds 128 ; temp. space for potential command tail
-
-strcnt: db 0 ; string count for string operations...
-
-vtyval: ds 1 ; holds row number for VT52 cursor positioning
-chrcnt: ds 1 ;Number of chars in the file buffer.
-
-; Various packet variables etc
-bytes: dw 0 ; 4 byte 'byte count' space
- dw 0
-filcnt: ds 1 ;Number of chars left to fill.
-outpnt: ds 2 ;Position in packet.
-bufpnt: ds 2 ;Position in file buffer.
-fcbptr: ds 2 ;Position in FCB.
-datptr: ds 2 ;Position in packet data buffer.
-cbfptr: ds 2 ;Position in character buffer.
-pktptr: ds 2 ;Position in receive packet.
-size: ds 1 ;Size of data from gtchr.
-curchk: ds 1 ;Current checksum type
-inichk: ds 1 ;Agreed upon checksum type
-czseen: ds 1 ;Flag that control-Z was typed
-dscflg: ds 1 ;[MF]Discard file if nonzero
-pktnum: ds 1 ;Packet number.
-numpkt: ds 2 ;Total number of packets sent.
-numrtr: ds 2 ;Total number of retries.
-numtry: ds 1 ;Number of tries on this packet.
-oldtry: ds 1 ;Number of tries on previous packet.
-state: ds 1 ;Present state of the automaton.
-;*** start of new flags. Do not assume that just because these flags are
-; present that the feature is available. I simply put them in 'for future use'
-rcapas:
-rcap1: db 0 ; receive capabilties byte 0
-rcap2: db 0 ; receive cpabilities byte 1
-scapas:
-scap1: db 0 ; send capabilities byte 0
-scap2: db 0 ; send capabilities byte 1
-rtimeo: db 0 ; receive timeout
-stimeo: db 0 ; send timeout
-rpadc: db 0 ; receive pad character
-spadc: db 0 ; send pad character
-rrept: db 0 ; receive repeat prefix
-srept: db 0 ; send repeat prefix
-rwindo: db 0 ; receive window size
-swindo: db 0 ; send window size
-rdpkt:
-rlpkt: dw 0 ; receive long packet length
-sdpkt:
-slpkt: dw 0 ; send long packet length
-sdckt: db 0 ; send default checktype
-rdckt: db 0 ; receive checktype (should be same as sdckt)
-;*** end of new flags
-sohchr: db 1 ;Default Start-of-header chr is cntl-a
-; Kermit packet starts here
-; Byte 0 = start of packe character
-; 1 = length of packet
-; 2 = packet number
-; 3 = packet type (S R I Z E B etc)
-packet: ds 4 ;Packet (data is part of it).
-; Data part of packet (variable length - include checksum)
-data: ds 5AH ;Data and checksum field of packet.
-recpkt: ds 65H ;Receive packet storage (use the following).
-recpkx: db cr,'$' ;= = = buffer limit
-filbuf: ds 65H ;Character buffer.
-fnbuf: ds 20h ;[jd] file name buffer
-autorc: db 0 ;[obs] set to ON for autoreceive
-
-; Temporary data space. Sometimes accesses as 16 bits (eg temp1/2)
-;** Temp 1 & 2 must be in order
-lstchr: ;Last console input character.
-temp1: ds 1 ;Temporary storage.
-temp2: ds 1
-lincnt: ; used for counting lines in p20ln
-temp3: ds 1
-temp4: ds 1
-temp5: ds 1
-temp6: ds 1
-temp7: ds 1
-temp8: ds 1
-temp9: ds 1
-temp10: ds 1
-temp11: ds 1
-
-
-getrxflg:
- ds 1 ;[obs 22]
-quietd: db 0 ;loud display during file transfers
-argblk: ds 20H ;Used for subroutine arguments
-
-maxfil EQU 2 ; currently, only two names used.
-fcbblk: ds maxfil*10H ;Used for a list of FCB's
-
-; [gnn] secondary filename storage (remote on send, local on get)
-remnam: ds 60 ;[gnn]
-remlen: ds 1 ;[gnn] length of name
-
-; Bookkeeping storage for multiple-sector buffering. The actual buffer
-; is somewhere in the system-dependent overlay. (at the end, I hope).
-nxtbuf: ds 2 ; Pointer to next sector
-seccnt: ds 1 ; Number of sectors buffered
-endsts: ds 1 ; Status for last read into buffer
-;
-;
-; [MF] Storage for Remote Command processing
-;
-;
-rdl: ds 1 ;[MF]Holds accumulated length of remote data
-;
-rcl: ds 1 ;[MF]Holds length of Remote command line arg
-;
-remdat: ds 95 ;[MF]Packet data buffer (plenty big)
-;
-rcom: ds 1 ;[MF] Remote Command type
-;
-rprmpt: dw 0 ;[MF]Address of prompt strings
-;
-rptr: dw 0 ;[MF]Remote command packet data pointer
-;
-rscode: ds 3 ;[MF]Holds Remote Set command ASCII code
-;
-;
- org 7000h ; address for Kermit 4.11
-; ORG ($ + 0ffH) AND 0ff00H ; move to start of next page
-
-;
-; hooks for system-dependent routines:
-; This area is overwritten by the system-dependent overlay.
-;
-lnkflg: dw 0 ; linkage information for consistency check.
-lnkent: dw 0 ; more of the same.
-ovlver: dw 0 ; pointer to overlay's version string
-family: dw 0 ;*NEW* [10] address of the family overlay (not CPSSYS)
-;
-; Input/output routines. Note that outmdm and outcon may actually be the
-; same routine if selmdm and selcon do anything. (the same is true
-; of inpmdm and inpcon).
-;
-selmdm: jmp $-$ ; select modem for I/O
-outmdm: jmp $-$ ; output character in E to modem
-inpmdm: jmp $-$ ; read character from modem. return character or 0 in A.
-flsmdm: jmp $-$ ; flush pending input from modem
-selcon: jmp $-$ ; select console for I/O
-outcon: jmp $-$ ; output character in E to console
-inpcon: jmp $-$ ; read char from console. return character or 0 in A
-outlpt: jmp $-$ ; output character in E to printer
-lptstat:jmp $-$ ;*NEW*[10] see if printer ready to print a character
- ; If 0ffh then ok, if 0h then not ok.
-extern: jmp $-$ ;*NEW for 4.09* If $-$ is not zero, then its a jump to
- ; a routine to emulate any terminal type the user
- ; wants to implement.
-xbdos: jmp 0 ;*NEW* address of the bdos trap in this section
- ; of code. It is filled in initialisation.
-;
-; screen formatting routines
-clrlin: jmp $-$ ; erase current line
-clrspc: jmp $-$ ; erase current position (after backspace)
-delchr: jmp $-$ ; make delete look like backspace
-clrtop: jmp $-$ ; erase screen and go home
-;
-; these routines are called to display a field on the screen.
-scrend: jmp $-$ ; move to prompt field
-screrr: jmp $-$ ; move to error message field
-scrfln: jmp $-$ ; move to filename field
-scrnp: jmp $-$ ; move to packet count field
-scrnrt: jmp $-$ ; move to retry count field
-scrst: jmp $-$ ; move to status field
-rppos: jmp $-$ ; move to receive packet field (debug)
-sppos: jmp $-$ ; move to send packet field (debug)
-;
-sysinit: jmp $-$ ; program initialization
-sysexit: jmp $-$ ; program termination
-syscon: jmp $-$ ; remote session initialization
-syscls: jmp $-$ ; return to local command level
-sysinh: jmp $-$ ; help text for interrupt (escape) extensions
-sysint: jmp $-$ ; interrupt (escape) extensions, including break
-sysflt: jmp $-$ ; filter for incoming characters.
- ; called with character in E.
-sysbye: jmp $-$ ; terminate remote session
-sysspd: jmp $-$ ; baud rate change routine.
- ; called with value from table in DE
-sysprt: jmp $-$ ; port change routine.
- ; called with value from table in HL
-sysscr: jmp $-$ ; screen setup for file transfer
- ; called with Kermit's version string in DE
-csrpos: jmp $-$ ; move cursor to row B, column C
-sysspc: jmp $-$ ; calculate free space for current disk
-mover: jmp $-$ ; block move
-prtstr: jmp $-$ ; *** NEW *** prtstr moved to overlay
-;
-; Data initialized by system-dependent overlay:
-;
-pttab: ds 2 ; points to local equivalents to VT52 escape sequences
-spdtab: ds 2 ; address of baud rate command table, or zero
-spdhlp: ds 2 ; address of baud rate help table, or zero
-prttab: ds 2 ; address of port command table, or zero
-prthlp: ds 2 ; address of port help table, or zero
-timout: ds 2 ; Initial value for fuzzy timeout
-vtflg: ds 1 ; VT52 emulation flag
-escchr: ds 1 ; Storage for the escape character.
-speed: ds 2 ; storage for the baud rate
-port: ds 2 ; storage for port value
-prnflg: ds 1 ;[hh] printer copy flag (overlay may need it)
-dbgflg: ds 1 ; debugging flag
-ecoflg: ds 1 ; Local echo flag (default off).
-flwflg: ds 1 ; File warning flag (default on).
-ibmflg: ds 1 ; IBM flag (default off).
-cpmflg: ds 1 ; File mode flag (ascii/binary/default)
-incflg: ds 1 ;[MF]Incomplete flag (keep/discard)
- ;[MF](default discard)
-parity: ds 1 ; Current parity.
-spsiz: ds 1 ; Send packet size.
-rpsiz: ds 1 ; Receive packet size.
-stime: ds 1 ; Send time out.
-rtime: ds 1 ; Receive time out.
-spad: ds 1 ; Send padding.
-rpad: ds 1 ; Receive padding.
-spadch: ds 1 ; Send padding char.
-rpadch: ds 1 ; Receive padding char.
-seol: ds 1 ; Send EOL char.
-reol: ds 1 ; Receive EOL char.
-squote: ds 1 ; Send quote char.
-rquote: ds 1 ; Receive quote char.
-chktyp: ds 1 ; Checksum type desired
-tacflg: ds 1 ; TACTrap flag (zero=off, nonzero=on; when non-zero,
- ; contains current TAC intercept character)
-tacchr: ds 1 ; TAC intercept character
-bufadr: ds 2 ; Pointer to big buffer for multiple-sector I/O
-bufsec: ds 1 ; Number of sectors big buffer can hold (0 means 256)
-ffussy: ds 1 ; if nonzero, don't permit <>.,;?*[] in CP/M filespec.
-; space used by directory command; here because space calculation is
-; (operating) system-dependent
-bmax: ds 2 ; highest block number on drive
-bmask: ds 1 ; (records/block)-1
-bshiftf: ds 1 ; number of shifts to multiply by rec/block
-nnams: ds 1 ; counter for filenames per line
-
-lnksiz equ $-lnkflg ; length of linkage section, for consistency check.
-
- END START
+; CPSDAT.ASM\r
+; KERMIT - (Celtic for "FREE")\r
+;\r
+; This is the CP/M-80 implementation of the Columbia University\r
+; KERMIT file transfer protocol.\r
+;\r
+; Version 4.0\r
+;\r
+; Copyright June 1981,1982,1983,1984,1985\r
+; Columbia University\r
+;\r
+; Originally written by Bill Catchings of the Columbia University Center for\r
+; Computing Activities, 612 W. 115th St., New York, NY 10025.\r
+;\r
+; Contributions by Frank da Cruz, Daphne Tzoar, Bernie Eiben,\r
+; Bruce Tanner, Nick Bush, Greg Small, Kimmo Laaksonen, Jeff Damens, and many\r
+; others. \r
+;\r
+; Pure and impure data areas. Previously of CPSUTL.ASM\r
+;\r
+; revision history:\r
+;\r
+;edit 19, 29-Mar-1991 by MF. Add flag "initak" (nonzero) which is cleared\r
+; after the initial automatic TAKE attempt of KERMIT.INI to allow\r
+; "unable to find file" complaints if not doing that initial TAKE.\r
+;edit 18, 21-Mar-1991 by MF. Renamed parameter vermin to revno (revision\r
+; level) since verno is already known as the "minor version number".\r
+;edit 17, 27-Feb-1991 by MF. Corrected typeo in "inms19" and commented out\r
+; "typptr" pointer as the TYPE command now uses the big buffer.\r
+; Also provided for a "minor version number" (1-26=A-Z) and message to\r
+; facilitate display of Kermit version in VERSION command (modmsg)\r
+;edit 16, 12-Feb-1991 by MF. Eliminated storage (message and variable)\r
+; for case sensitivity by commenting it out.\r
+;edit 15, 9-Dec-1990 by MF. Modified message for "directory file size"\r
+; status report to make it clearer when spoken by a speech synthesizer.\r
+;edit 14, 4-Dec-1990 by MF. Added message for Autoreceive status report.\r
+;edit 13, 30-Nov-1990 by MF. Added messages to display regular/quiet status\r
+; of terminal in SHOW and STATUS commands.\r
+;edit 12, 8-Nov-1990 by MF. Added a new message for Set Autoreceive.\r
+;edit 11, 2-Nov-1990 by MF. Moved overlay address to 7000H -- I didn't\r
+; realize I was **that** close to the limit until I made a couple of\r
+; cosmetic changes and REM CD bombed. This is still ver. 4.10 as it\r
+; hasn''t been released yet.\r
+;edit 10, 1-Nov-1990 by MF. Changed message at "spdst" to conform with\r
+; the change of "SET BAUD-RATE" to "SET SPEED".\r
+; Also added message "sdpst2" for speed status (staspd) routine\r
+;edit 9, 17-Oct-1990 by MF. Changed "packet-size" messages to use the\r
+; word "length" to conform with the nomenclature suggested in the\r
+; 6th edition of the Kermit Protocol Manual.\r
+;edit 8, 19-Sep-1990 by MF. Added error message for FRENAME command.\r
+;edit 7, 14-Sep-1990 by MF. Added storage/strings for SET COLLISION command.\r
+; Also added strings/storage for SET INCOMPLETE-FILE command.\r
+;edit 6, 9-Sep-1990 by MF. Added messages and storage for Remote commands.\r
+; and display of packet sizes\r
+; Moved overlay address to 06C00H for Version 4.10.\r
+; edit 5, 8 April, 1987 by OBSchou. Added new entry in jump table to call \r
+; code for an external terminal type. Added some new error messages\r
+; and added more to the packet space.\r
+;\r
+; edit 4, 30 March by OBSchou. Added in space for autoreceive.\r
+;\r
+; edit 3, 19 March, 1987 by OBSchou. Added some more strings etc, and \r
+; increased the stack space fro 32 entries to 64.\r
+;\r
+; edit 2, 11 March, 1987 by OBSchou. \r
+; Added in some more data and strings and things. Nothing special\r
+;\r
+; edit 1, 28 January, 1987 by OBSchou\r
+; Following file the data section of CPSUTL.ASM. This part of the \r
+; CPSUTL.ASM file now seperate as it ws getting too larg. Link to here\r
+; from CPSUTL.ASM (which now has only the utlity routines). \r
+; Also added in bits submitted by Dave Roberts of Leicester:\r
+; DJR 18th January 1987 - David J. Roberts.\r
+; Support for cosmetic changes in CPSMIT:\r
+; New strings DBGST and CURDST\r
+; CRLF in front of TIMMSG\r
+; LOGST changed, and new LOGST2\r
+;\r
+;\r
+datver: db 'CPSDAT.ASM (19) 29-Mar-1991$'\r
+\r
+\r
+\r
+;\f\r
+\r
+version:db 'Kermit-80 v4.'\r
+ db (verno/10) + '0' ; tenth's digit of version number\r
+ db (verno MOD 10) + '0' ; hundredth's digit\r
+IF revno ;[MF]If a revision level,\r
+ db revno+'@' ;[MF]put it in (range 1-26=A-Z)\r
+ENDIF ;revno [MF]\r
+ db ' $'\r
+modmsg: db ' has been built from the following modules:$';[MF]\r
+kerm: db 'Kermit-80 '\r
+kerm1: db 'nnx:>$' ;'x' filled in at startup with DRIVE name\r
+ ;'nn filled at startup and user with user number\r
+crlf: db cr,lf,'$'\r
+ermes1: db cr,lf,'?Unrecognized command$'\r
+ermes3: db cr,lf,'?Not confirmed$'\r
+ermes4: db '?Unable to receive initiate',cr,lf,'$'\r
+ermes5: db '?Unable to receive file name',cr,lf,'$'\r
+ermes6: db '?Unable to receive end of file',cr,lf,'$'\r
+erms10: db '?Unable to receive data',cr,lf,'$'\r
+erms11: db '?Disk full',cr,lf,'$'\r
+erms12: db '?Directory full',cr,lf,'$'\r
+erms14: db '?Unable to receive an acknowledgement from the host',cr,lf,'$'\r
+erms15: db cr,lf,'?Unable to find file',cr,lf,'$'\r
+erms16: db '?Unable to rename file$'\r
+erms17: db cr,lf,'?Disk full$'\r
+erms18: db cr,lf,'?Unable to tell host that the session is finished$'\r
+erms19: db cr,lf,'?Unable to tell host to logout$'\r
+erms20: db cr,lf,'?Kermit has not been configured for a target system$'\r
+erms21: db cr,lf,'?Consistency check on configuration failed$'\r
+erms22: db cr,lf,'?Error writing to log file',cr,lf,'$' ;[pcc005]\r
+erms23: db cr,lf,'?Invalid user number$'\r
+erms24: db cr,lf,'?Invalid Pause parameter$'\r
+erms25: db cr,lf,'?Invalid BUFFER-SIZE parameter$'\r
+erms26: db cr,lf,'?Invalid packet length (too long)$'\r
+erms27: db cr,lf,'?Invalid Checktype$'\r
+erms28: db cr,lf,'?Too many retries$'\r
+erms29: db cr,lf,'?Failed to exchange parameters$'\r
+erms30: db cr,lf,'?Failed to receive input string in alloted time$'\r
+erms31: db cr,lf,'?File already exists$' ;[MF]\r
+\r
+infms3: db bell,'Completed$'\r
+infms4: db bell,'Failed$'\r
+infms5: db '%Renaming file to $'\r
+infms6: db cr,lf,'[Closing the log file]$'\r
+infms7: db cr,lf,'[Connected to remote host. Type $'\r
+infms8: db 'C to return;',cr,lf,' type $'\r
+inms8a: db '? for command list]',cr,lf,'$'\r
+infms9: db cr,lf,'[Connection closed, back at micro]$'\r
+inms10: db 'Control-$'\r
+inms11: db ' Not implemented.$'\r
+inms12: db ' (Not implemented)',cr,lf,'$'\r
+inms13: db bell,'Interrupted$'\r
+inms14: db TAB,TAB,' Directory for drive '\r
+dnam14: db 'nnx:',cr,lf,'$' ;filled in by dir routine.\r
+inms15: DB CR,LF,TAB,TAB,'Drive $'\r
+inms16: DB ' has $';filled in by summary code with drive letter\r
+inms17: DB 'K bytes free',CR,LF,'$'\r
+inms18: DB CR,LF,'File(s) erased$',CR,LF\r
+inms19: db cr,lf,'[Transmitting file to host:'\r
+ db cr,lf,' 1. Lines automatically sent, and wait for possible reply'\r
+ db cr,lf,' 2. CONTROL-C aborts transfer'\r
+ db cr,lf,' 3. If transfer hangs, try a return to continue'\r
+ db cr,lf,' 4. on exit, you will be placed in CONNECT state.'\r
+ db cr,lf,'$'\r
+inms20: db 'R to send the same line again,'\r
+ db cr,lf,' or type $'\r
+inms21: db 'C to abort transmission.]',cr,lf,'$'\r
+inms22: db cr,lf,'[Transmission done. Connected normally '\r
+ db 'to remote host,'\r
+ db cr,lf,' type $'\r
+inms23: db 'Sending...$'\r
+inms24: db 'Receiving...$'\r
+inms25: db bell,'Warning: eighth bit cannot be sent$'\r
+inms26: db cr,lf,'For help, type ? at any point in a command$'\r
+inms27: db cr,lf,'[Logging suspended]',cr,lf,'$' ;[pcc003]\r
+inms28: db cr,lf,'[Logging resumed]',cr,lf,'$' ;[pcc003]\r
+inms29: db cr,lf,'[Transmission Aborted. Connected normally '\r
+ db 'to remote host,'\r
+ db cr,lf,' type $'\r
+autmes: db cr,lf,cr,lf,'[Automatically receiving; type ^C to abort]'\r
+ db cr,lf,cr,lf,'$' ;[MF]\r
+anymes: db cr,lf,cr,lf,' * * * Press any key to continue * * * '\r
+ db cr,lf,cr,lf,'$'\r
+escmes: db cr,lf,'Type the new escape character: $'\r
+tacmes: db cr,lf,'Type the new TAC intercept character: $'\r
+sopmes: db cr,lf,'Give the start-of-packet character: $' ;[gnn]\r
+padcms: db cr,lf,'Type the new padding character: $' ;[obs]\r
+xmthlp: db cr,lf,'R Send the same line again$'\r
+loghlp: db cr,lf,'Q Suspend logging' ;[pcc003]\r
+ db cr,lf,'R Resume logging$' ;[pcc003]\r
+inthlp: db cr,lf,'? This message'\r
+ db cr,lf,'C Close the connection'\r
+ db cr,lf,'0 (zero) Transmit a NULL'\r
+ db cr,lf,'P Toggle printer on/off' ;[pcc002]\r
+ db cr,lf,'S Status of the connection$'\r
+inhlp1: db cr,lf,'Typing another $'\r
+inhlp2: db ' will send it to the host'\r
+ db cr,lf,cr,lf,'Command>$'\r
+\r
+xmtst: db cr,lf,'Transmitting a file$'\r
+autrst: db cr,lf,'Autoreceive is$'\r
+locst: db cr,lf,'Local echo$'\r
+onstr: db ' on$'\r
+offstr: db ' off$'\r
+flost: db cr,lf,'Flow control$'\r
+;senst: db cr,lf,'Case sensetivity$'\r
+vtdpst: db cr,lf,'Terminal display is $'\r
+vtdpsr: db 'REGULAR$'\r
+vtdpsq: db 'QUIET$'\r
+vtemst: db cr,lf,'Terminal emulation is $'\r
+cpmst: db cr,lf,'File Mode$'\r
+defstr: db ' default$'\r
+ascstr: db ' ASCII$'\r
+binstr: db ' binary$'\r
+hfsod: db cr,lf,'Display file size on DIRECTORY command$'\r
+ibmst: db cr,lf,'IBM flag$'\r
+incst: db cr,lf,'Disposition for incomplete files is$'\r
+dscstr: db ' discard$'\r
+kepstr: db ' keep$'\r
+filst: db cr,lf,'File warning$'\r
+prst: db cr,lf,'Printer copy$'\r
+logst: db cr,lf,'Logging to $' ;[pcc003][DJR]\r
+logst2: db ' is$' ;[DJR]\r
+susstr: db ' suspended$' ;[pcc003]\r
+sspmsg: db cr,lf,'SEND start-of-pkt char ^$' ;[gnn]\r
+rspmsg: db cr,lf,'RECEIVE start-of-pkt char ^$' ;[gnn]\r
+spsmsg: db cr,lf,'SEND packet length $' ;[MF]\r
+rpsmsg: db cr,lf,'RECEIVE packet length $' ;[MF]\r
+escst: db cr,lf,'Escape char: $'\r
+bufsz1: db cr,lf,'Multi-sector buffering at $'\r
+bufsz2: db ' of a maximum of $'\r
+xmitst: db cr,lf,'Transmit protocol char: $'\r
+bckst: db cr,lf,'Block check type: $'\r
+bckst1: db '-character$'\r
+collst: db cr,lf,'File COLLISION: $';[MF]\r
+parst: db cr,lf,'Parity: $'\r
+pnonst: db 'none$'\r
+pmrkst: db 'mark$'\r
+pspcst: db 'space$'\r
+poddst: db 'odd$'\r
+pevnst: db 'even$'\r
+porst: db cr,lf,'Port in use is: $'\r
+spdst: db cr,lf,'Current speed is: $'\r
+spdst2: db ' bps$' ;[MF]\r
+spdust: db 'indeterminate (not SET)$'\r
+timmsg: db cr,lf,'Timer$' ;[DJR] Added CRLF like the others\r
+tacst: db cr,lf,'Current TACTrap Status/Intercept Character: $'\r
+usrst: db cr,lf,'Current user number: $'\r
+dbgst: db cr,lf,'Debugging$' ;[DJR]\r
+curdst: db cr,lf,'Current default disk: $' ;[DJR]\r
+spac15: db ' $' ; *** 15 spaces ***\r
+samems: db cr,lf,'?Source and destination files the same$'\r
+nofile: db cr,lf,'?File not found$'\r
+cmer00: db cr,lf,'?Program error: Invalid COMND call$'\r
+cmer01: db cr,lf,'?Ambiguous$'\r
+cmer02: db cr,lf,'?Illegal CP/M file specification$'\r
+cmer03: db cr,lf,'?Wild-cards not allowed in file specification$' ;[pcc006]\r
+cmer04: db cr,lf,'?Invalid user number$'\r
+cmer05: db cr,lf,'?Invalid \ parameter$'\r
+cmin00: db ' Confirm with carriage return$'\r
+cmin01: db ' Enter a number$'\r
+cmin02: db ' Confirm with carriage return or enter more$'\r
+\r
+; Diagnostic messages\r
+sstatm: db '<SState:> ',0\r
+rstatm: db '<RState:> ',0\r
+spackm: db '<Data transmitted> ',0\r
+rpackm: db '<Data received > ',0\r
+princr: db cr,lf,0\r
+;\r
+; Remote command messages [MF]\r
+;\r
+newfms: db cr,lf,'New file: $'\r
+pswdms: db cr,lf,'Password: $'\r
+acctms: db cr,lf,'Account: $'\r
+newnms: db cr,lf,'New name: $'\r
+msgms: db cr,lf,'Message: $'\r
+optms: db cr,lf,'Options: $'\r
+\r
+;\f\r
+ ;Impure data\r
+\r
+;COMND storage\r
+\r
+comchr: ds 1 ;[8] save space\r
+floctl: db 0 ;[8] flow control on/off flag\r
+;casens: db 0 ;[8] Upper/lower case sensitive\r
+cmstat: ds 1 ;What is presently being parsed.\r
+cmaflg: ds 1 ;Non-zero when an action char has been found.\r
+cmbflg: ds 1 ;[MF]Nonzero to allow a blank initial keyword\r
+cmqflg: ds 1 ;[MF]Nonzero to prevent character echoing\r
+ ;[MF]when entering commands\r
+cmccnt: ds 1 ;Non-zero if a significant char is found.\r
+cmsflg: ds 1 ;Non-zero when the last char was a space.\r
+cmostp: ds 2 ;Old stack pointer for reparse.\r
+cmrprs: ds 2 ;Address to go to on reparse.\r
+cmprmp: ds 2 ;Address of prompt.\r
+cmptab: ds 2 ;Address of present keyword table.\r
+cmhlp: ds 2 ;Address of present help.\r
+cmdbuf: ds 80H ;Buffer for command parsing.\r
+cmbufl equ $-cmdbuf-3 ; set a limit on the command buffer\r
+cmfcb: ds 2 ;Pointer to FCB.\r
+cmfcb2: ds 2 ;Pointer to position in FCB.\r
+cmfwld: ds 1 ;Wildcard flag\r
+cmcptr: ds 2 ;Pointer for next char input.\r
+cmdptr: ds 2 ;Pointer into the command buffer.\r
+cmkptr: ds 2 ;Pointer to keyword.\r
+cmsptr: ds 2 ;Place to save a pointer.\r
+slshsn: db 0 ; slash seen in command line\r
+slashc: db 0 ; count for number of characters in slash sequence\r
+slashn: db 0 ; number to be built for \xxx\r
+;\f\r
+oldsp: ds 2 ;Room for old system stack.\r
+ ds 80H ;Room for 64 levels of calls.[obs]\r
+stack: ds 2\r
+eoflag: ds 1 ;EOF flag;non-zero on EOF.\r
+curdsk: db 0 ;holds "logged" disk\r
+curusr: db 0 ;[8] holds "user" number\r
+rcvsop: db SOH ;[gnn] receive start-of-packet\r
+sndsop: db SOH ;[gnn] send start-of-packet\r
+prtcnt: db 0 ;[pcc008] prtchr fairness count\r
+timflg: db 0 ;[jd] timer flag: 0 -> no timer\r
+timval: dw 0 ;[jd] timer value\r
+wrn8: db 0 ;[jd] non-zero if 8-bit-lost warning sent\r
+qbchr: db '&' ;[jd] binary quote character.\r
+quot8: db 0 ;[jd] non-zero if doing 8-bit quoting\r
+logflg: db 0 ;Flag for a log file.\r
+ ;[pcc005] 0 = no log\r
+ ;[pcc005] x1 = logging on\r
+ ;[pcc005] x2 = suspended\r
+ ;[pcc005] 8xH (bit 7) = file open\r
+lognam: db 0 ;[pcc013] File to use for session logging\r
+ db 'KERMIT ' ;[pcc013]\r
+ db 'LOG' ;[pcc013]\r
+nexitf: db 0 ; set to 1 for exit to CPM after command tail\r
+takflg: db 0 ;[8] TAKE flag. \r
+ ; Bit zero = 1 for take file in progress\r
+ ; bit 4 = 1 if command line present/in progress\r
+ ; Note: Take has priority over command line.\r
+initak: db 0ffh ;[MF]Cleared after initial TAKE (KERMIT.INI)\r
+taknam: db 0 ;[8] use default drive\r
+ db 'KERMIT '\r
+ db 'INI' ;[8] Inital file to TAKE KERMIT.INI\r
+takptr: ds 2 ;[8] Pointer to position in TAKE file input\r
+takfcb: ds 12 ;[8] fcb space for take file\r
+ dw 0 ;[8] fill up extents etc with 00\r
+ dw 0\r
+ ds 16 ;[8] used by dos\r
+ dw 0\r
+ dw 0\r
+takdma: ds 128 ;[8]space to read TAKE file...\r
+prnbuf: ds 1 ; printer buffer. Output pointer\r
+ ds 1 ; input offset pointer\r
+ ds 256 ; give a large buffer\r
+ ds 10 ; and a little spare\r
+;\r
+;\r
+;\r
+; Transmit space\r
+;\r
+repcnt: db 0 ; repeat counter\r
+starc: db 0 ; star count\r
+rexbfl: db 0 ; retransmit flag (1=> retransmit)\r
+rexcnt: db 0 ; retransmit character count\r
+rexbuf: ds 128 ; max retransmit line length 128 characters\r
+xmtbuff:\r
+ ds 128 ; 128 byte sector buffer\r
+xmtptr: db 0 ; offset pointer to xmtbuff above\r
+xmtfcb: ds 36 ; fcb for transmit file.\r
+;\r
+;INPUT and STRING space\r
+strlen: db 0 ; length of the string from INPUT and STRING\r
+\r
+; Assorted other space\r
+errorc: db 0 ; error level set to xxx\r
+errorl: db 0 ; error level to test against\r
+\r
+remtxt: db 0 ; set <> 0 if D packets to screen\r
+\r
+hosths: ds 1 ; have we told the host to xoff? (is this duplicated)\r
+stbuff: ds 80h ; some space or the string buffer\r
+waitp: ds 2 ; wait command timer\r
+waitp1: ds 2 ; wait/input timer (copy of waitp)\r
+prntmp: ds 1 ; temporary space to put the caracter to print\r
+prnfl: db 0 ; printer flag. Used by TYPE/PRINT\r
+;[MF][17]Following line no longer needed as TYPE uses the big buffer\r
+;typptr: ds 2 ; pointer used by TYPE/PRINT\r
+equflg: db 0 ; set to non zero if copy files same\r
+nquiet: db 0 ; If non zero print from NOUT to display\r
+\r
+escflg: db 0 ;Escape flag (start off).\r
+fileio: db 0 ;Line-by-line from file (default off).\r
+xofflg: db 0 ;X-OFF (=^S) received from COMM-line\r
+ ;X-ON (=^Q) received resets this\r
+clkbit: dw 0 ; 32 bit pseudo clock\r
+ dw 0 ; MS bits of clock\r
+number: ds 2 ; Number in binary form from user input\r
+initflg:db 0 ; set to non zero when system initialised\r
+maxbsc: ds 1 ; save space to know how big system allows\r
+ ; for multi-sector buffering. (Usually 8k?)\r
+;\r
+; Multiple FCB storage space. Used for the DIR command\r
+; Later on, I want to shift this into space after the system\r
+; dependent stuff, but then it becomes messy with pointers\r
+; to pointers etc... [OBS]\r
+;\r
+xfcbptr:\r
+ ds 2 ; pointer to current fcb space\r
+fcbcnt: ds 1 ; Number of valid fcbs in space\r
+;\r
+fcb0: ds 12 ; 36 bytes requred for a single fcb\r
+fcblen EQU $-fcb0 ; length of a single fcb\r
+ ds maxfcb*fcblen ; space for maximum fcbs + 1 \r
+;\r
+hidefs: db 0ffh ; flag <> 0 if we show file size in DIR\r
+\r
+; FCB sapce for COPY command\r
+cfcbs: ds 33 ; source fcb for copy file ops.\r
+ ;[MF]and FRENAME ops.\r
+cfcbd: ds 33 ; destination fcb for copy ops.\r
+ ;[MF]and FRENAME ops.\r
+\r
+colfcb: ds 33 ;[MF]Rename fcb for SET COLLISION\r
+\r
+; Command tail data space etc\r
+cbptr: db 2 ; command tail pointer (0= length of tail)\r
+cbuff: ds 128 ; temp. space for potential command tail\r
+\r
+strcnt: db 0 ; string count for string operations...\r
+\r
+vtyval: ds 1 ; holds row number for VT52 cursor positioning\r
+chrcnt: ds 1 ;Number of chars in the file buffer.\r
+\r
+; Various packet variables etc\r
+bytes: dw 0 ; 4 byte 'byte count' space\r
+ dw 0\r
+filcnt: ds 1 ;Number of chars left to fill.\r
+outpnt: ds 2 ;Position in packet.\r
+bufpnt: ds 2 ;Position in file buffer.\r
+fcbptr: ds 2 ;Position in FCB.\r
+datptr: ds 2 ;Position in packet data buffer.\r
+cbfptr: ds 2 ;Position in character buffer.\r
+pktptr: ds 2 ;Position in receive packet.\r
+size: ds 1 ;Size of data from gtchr.\r
+curchk: ds 1 ;Current checksum type\r
+inichk: ds 1 ;Agreed upon checksum type\r
+czseen: ds 1 ;Flag that control-Z was typed\r
+dscflg: ds 1 ;[MF]Discard file if nonzero\r
+pktnum: ds 1 ;Packet number.\r
+numpkt: ds 2 ;Total number of packets sent.\r
+numrtr: ds 2 ;Total number of retries.\r
+numtry: ds 1 ;Number of tries on this packet.\r
+oldtry: ds 1 ;Number of tries on previous packet.\r
+state: ds 1 ;Present state of the automaton.\r
+;*** start of new flags. Do not assume that just because these flags are\r
+; present that the feature is available. I simply put them in 'for future use'\r
+rcapas:\r
+rcap1: db 0 ; receive capabilties byte 0\r
+rcap2: db 0 ; receive cpabilities byte 1\r
+scapas:\r
+scap1: db 0 ; send capabilities byte 0\r
+scap2: db 0 ; send capabilities byte 1\r
+rtimeo: db 0 ; receive timeout\r
+stimeo: db 0 ; send timeout\r
+rpadc: db 0 ; receive pad character\r
+spadc: db 0 ; send pad character\r
+rrept: db 0 ; receive repeat prefix\r
+srept: db 0 ; send repeat prefix\r
+rwindo: db 0 ; receive window size\r
+swindo: db 0 ; send window size\r
+rdpkt:\r
+rlpkt: dw 0 ; receive long packet length\r
+sdpkt:\r
+slpkt: dw 0 ; send long packet length\r
+sdckt: db 0 ; send default checktype\r
+rdckt: db 0 ; receive checktype (should be same as sdckt)\r
+;*** end of new flags\r
+sohchr: db 1 ;Default Start-of-header chr is cntl-a\r
+; Kermit packet starts here\r
+; Byte 0 = start of packe character\r
+; 1 = length of packet\r
+; 2 = packet number\r
+; 3 = packet type (S R I Z E B etc)\r
+packet: ds 4 ;Packet (data is part of it).\r
+; Data part of packet (variable length - include checksum)\r
+data: ds 5AH ;Data and checksum field of packet.\r
+recpkt: ds 65H ;Receive packet storage (use the following).\r
+recpkx: db cr,'$' ;= = = buffer limit\r
+filbuf: ds 65H ;Character buffer.\r
+fnbuf: ds 20h ;[jd] file name buffer\r
+autorc: db 0 ;[obs] set to ON for autoreceive\r
+\r
+; Temporary data space. Sometimes accesses as 16 bits (eg temp1/2)\r
+;** Temp 1 & 2 must be in order\r
+lstchr: ;Last console input character.\r
+temp1: ds 1 ;Temporary storage.\r
+temp2: ds 1\r
+lincnt: ; used for counting lines in p20ln\r
+temp3: ds 1\r
+temp4: ds 1\r
+temp5: ds 1\r
+temp6: ds 1\r
+temp7: ds 1\r
+temp8: ds 1\r
+temp9: ds 1\r
+temp10: ds 1\r
+temp11: ds 1\r
+\r
+\r
+getrxflg:\r
+ ds 1 ;[obs 22]\r
+quietd: db 0 ;loud display during file transfers\r
+argblk: ds 20H ;Used for subroutine arguments\r
+\r
+maxfil EQU 2 ; currently, only two names used.\r
+fcbblk: ds maxfil*10H ;Used for a list of FCB's\r
+\r
+; [gnn] secondary filename storage (remote on send, local on get)\r
+remnam: ds 60 ;[gnn]\r
+remlen: ds 1 ;[gnn] length of name\r
+\r
+; Bookkeeping storage for multiple-sector buffering. The actual buffer\r
+; is somewhere in the system-dependent overlay. (at the end, I hope).\r
+nxtbuf: ds 2 ; Pointer to next sector\r
+seccnt: ds 1 ; Number of sectors buffered\r
+endsts: ds 1 ; Status for last read into buffer\r
+;\r
+;\r
+; [MF] Storage for Remote Command processing\r
+;\r
+;\r
+rdl: ds 1 ;[MF]Holds accumulated length of remote data\r
+;\r
+rcl: ds 1 ;[MF]Holds length of Remote command line arg\r
+;\r
+remdat: ds 95 ;[MF]Packet data buffer (plenty big)\r
+;\r
+rcom: ds 1 ;[MF] Remote Command type\r
+;\r
+rprmpt: dw 0 ;[MF]Address of prompt strings\r
+;\r
+rptr: dw 0 ;[MF]Remote command packet data pointer\r
+;\r
+rscode: ds 3 ;[MF]Holds Remote Set command ASCII code\r
+;\r
+;\r
+ org 7000h ; address for Kermit 4.11\r
+; ORG ($ + 0ffH) AND 0ff00H ; move to start of next page\r
+\r
+;\r
+; hooks for system-dependent routines:\r
+; This area is overwritten by the system-dependent overlay.\r
+;\r
+lnkflg: dw 0 ; linkage information for consistency check.\r
+lnkent: dw 0 ; more of the same.\r
+ovlver: dw 0 ; pointer to overlay's version string\r
+family: dw 0 ;*NEW* [10] address of the family overlay (not CPSSYS)\r
+;\r
+; Input/output routines. Note that outmdm and outcon may actually be the\r
+; same routine if selmdm and selcon do anything. (the same is true\r
+; of inpmdm and inpcon).\r
+;\r
+selmdm: jmp $-$ ; select modem for I/O\r
+outmdm: jmp $-$ ; output character in E to modem\r
+inpmdm: jmp $-$ ; read character from modem. return character or 0 in A.\r
+flsmdm: jmp $-$ ; flush pending input from modem\r
+selcon: jmp $-$ ; select console for I/O\r
+outcon: jmp $-$ ; output character in E to console\r
+inpcon: jmp $-$ ; read char from console. return character or 0 in A\r
+outlpt: jmp $-$ ; output character in E to printer\r
+lptstat:jmp $-$ ;*NEW*[10] see if printer ready to print a character\r
+ ; If 0ffh then ok, if 0h then not ok.\r
+extern: jmp $-$ ;*NEW for 4.09* If $-$ is not zero, then its a jump to\r
+ ; a routine to emulate any terminal type the user\r
+ ; wants to implement.\r
+xbdos: jmp 0 ;*NEW* address of the bdos trap in this section\r
+ ; of code. It is filled in initialisation.\r
+;\r
+; screen formatting routines\r
+clrlin: jmp $-$ ; erase current line\r
+clrspc: jmp $-$ ; erase current position (after backspace)\r
+delchr: jmp $-$ ; make delete look like backspace\r
+clrtop: jmp $-$ ; erase screen and go home\r
+;\r
+; these routines are called to display a field on the screen.\r
+scrend: jmp $-$ ; move to prompt field\r
+screrr: jmp $-$ ; move to error message field\r
+scrfln: jmp $-$ ; move to filename field\r
+scrnp: jmp $-$ ; move to packet count field\r
+scrnrt: jmp $-$ ; move to retry count field\r
+scrst: jmp $-$ ; move to status field\r
+rppos: jmp $-$ ; move to receive packet field (debug)\r
+sppos: jmp $-$ ; move to send packet field (debug)\r
+;\r
+sysinit: jmp $-$ ; program initialization\r
+sysexit: jmp $-$ ; program termination\r
+syscon: jmp $-$ ; remote session initialization\r
+syscls: jmp $-$ ; return to local command level\r
+sysinh: jmp $-$ ; help text for interrupt (escape) extensions\r
+sysint: jmp $-$ ; interrupt (escape) extensions, including break\r
+sysflt: jmp $-$ ; filter for incoming characters.\r
+ ; called with character in E.\r
+sysbye: jmp $-$ ; terminate remote session\r
+sysspd: jmp $-$ ; baud rate change routine.\r
+ ; called with value from table in DE\r
+sysprt: jmp $-$ ; port change routine.\r
+ ; called with value from table in HL\r
+sysscr: jmp $-$ ; screen setup for file transfer\r
+ ; called with Kermit's version string in DE\r
+csrpos: jmp $-$ ; move cursor to row B, column C\r
+sysspc: jmp $-$ ; calculate free space for current disk\r
+mover: jmp $-$ ; block move\r
+prtstr: jmp $-$ ; *** NEW *** prtstr moved to overlay\r
+;\r
+; Data initialized by system-dependent overlay:\r
+;\r
+pttab: ds 2 ; points to local equivalents to VT52 escape sequences\r
+spdtab: ds 2 ; address of baud rate command table, or zero\r
+spdhlp: ds 2 ; address of baud rate help table, or zero\r
+prttab: ds 2 ; address of port command table, or zero\r
+prthlp: ds 2 ; address of port help table, or zero\r
+timout: ds 2 ; Initial value for fuzzy timeout\r
+vtflg: ds 1 ; VT52 emulation flag\r
+escchr: ds 1 ; Storage for the escape character.\r
+speed: ds 2 ; storage for the baud rate\r
+port: ds 2 ; storage for port value\r
+prnflg: ds 1 ;[hh] printer copy flag (overlay may need it)\r
+dbgflg: ds 1 ; debugging flag\r
+ecoflg: ds 1 ; Local echo flag (default off).\r
+flwflg: ds 1 ; File warning flag (default on).\r
+ibmflg: ds 1 ; IBM flag (default off).\r
+cpmflg: ds 1 ; File mode flag (ascii/binary/default)\r
+incflg: ds 1 ;[MF]Incomplete flag (keep/discard)\r
+ ;[MF](default discard)\r
+parity: ds 1 ; Current parity.\r
+spsiz: ds 1 ; Send packet size.\r
+rpsiz: ds 1 ; Receive packet size.\r
+stime: ds 1 ; Send time out.\r
+rtime: ds 1 ; Receive time out.\r
+spad: ds 1 ; Send padding.\r
+rpad: ds 1 ; Receive padding.\r
+spadch: ds 1 ; Send padding char.\r
+rpadch: ds 1 ; Receive padding char.\r
+seol: ds 1 ; Send EOL char.\r
+reol: ds 1 ; Receive EOL char.\r
+squote: ds 1 ; Send quote char.\r
+rquote: ds 1 ; Receive quote char.\r
+chktyp: ds 1 ; Checksum type desired\r
+tacflg: ds 1 ; TACTrap flag (zero=off, nonzero=on; when non-zero,\r
+ ; contains current TAC intercept character)\r
+tacchr: ds 1 ; TAC intercept character\r
+bufadr: ds 2 ; Pointer to big buffer for multiple-sector I/O\r
+bufsec: ds 1 ; Number of sectors big buffer can hold (0 means 256)\r
+ffussy: ds 1 ; if nonzero, don't permit <>.,;?*[] in CP/M filespec.\r
+; space used by directory command; here because space calculation is\r
+; (operating) system-dependent\r
+bmax: ds 2 ; highest block number on drive\r
+bmask: ds 1 ; (records/block)-1\r
+bshiftf: ds 1 ; number of shifts to multiply by rec/block\r
+nnams: ds 1 ; counter for filenames per line\r
+\r
+lnksiz equ $-lnkflg ; length of linkage section, for consistency check.\r
+\r
+ END START\r
projects / kermit-80.git / blobdiff