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steco_19840320_1er_E35
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10,5676/teco/newsrc/tecdtm.mac
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SUBTTL Introduction
; Copyright (c) 1980 Stevens Institute of Technology, Hoboken, New Jersey
; 07030.
; This software may be used and copied provided that this copyright notice
;is included, and provided that copies of all modifications are sent to:
;
; TECO Project
; Computer Center
; Stevens Institute of Technology
; Castle Point Station
; Hoboken, New Jersey 07030
;
;
; The information in this software is subject to change without notice
; and should not be construed as a commitment by Stevens Institute of
; Technology.
; Search needed universals
SEARCH TECUNV ; TECO universal file
; Generate the prologue
TECVER==200 ; Major version number
TECMIN==1 ; Minor version number
TECEDT==1126 ; Edit level
TECWHO==0 ; Last editor
PROLOGUE(DTM,<TECO Datamedia terminal support>) ; Generate the TITLE and other stuff
$CODE ; Put into code PSECT
SUBTTL Table of Contents
;+
;.pag.lit
; Table of Contents for TECDTM - Datamedia terminal support
;
;
; Section Page
; 1. Introduction . . . . . . . . . . . . . . . . . . . . . 1
; 2. Table of Contents. . . . . . . . . . . . . . . . . . . 2
; 3. Revision History . . . . . . . . . . . . . . . . . . . 3
; 4. Tables
; 4.1. Datamedia-1520/1520A. . . . . . . . . . . . . 5
; 5. Support routines
; 5.1. DM-1520A
; 5.1.1. XY positioning . . . . . . . . . . . 6
; 5.1.2. Move cost calculation. . . . . . . . 7
; 5.1.3. Delete a line feed . . . . . . . . . 8
; 5.1.4. Control-U. . . . . . . . . . . . . . 9
; 5.1.5. Delete to end of line. . . . . . . . 10
; 6. Low segment. . . . . . . . . . . . . . . . . . . . . . 11
; 7. End of TECDTM. . . . . . . . . . . . . . . . . . . . . 12
;.end lit.pag
;-
SUBTTL Revision History
COMMENT |
1000 Start of this version
Start of Version 200A(1126)
|
; Macro to define a word of five characters
DEFINE TB(A<.CHNUL>,B<.CHNUL>,C<.CHNUL>,D<.CHNUL>,E<.CHNUL>)
< BYTE (7)A,B,C,D,E>
SUBTTL Tables -- Datamedia-1520/1520A
CRTINI V1520
CRTENT DBS,<TB(" ",.CHCNH)>
CRTENT CRB,<TB(.CHCNH)>
CRTENT CTU,<PUSHJ P,D15CTU> ; Routine to process a control U
CRTENT BCK,<TB(.CHCNH)>
CRTENT DLF,<PUSHJ P,D15DLF> ; Routine to delete a line feed
CRTENT SPC,<TB(" ")>
CRTENT ERS,<TB(.CHFFD)>
CRTENT DEL,<PUSHJ P,D15DEL> ; Routine to delete a line
CRTENT DSP,.CHSPC
CRTENT (LIN,^D24)
CRTENT (WID,^D79)
CRTENT XYP,<PUSHJ P,D15XY> ; X and Y positioning
CRTENT CPP,<PUSHJ P,D15CPP> ; Cost to move from point A to B
CRTENT CDE,<MOVEI T1,1> ; Cost to delete to end of line
CRTEND ; End the table
SUBTTL Support routines -- DM-1520A -- XY positioning
;+
;.HL D15XY
;This routine will do the positioning for the Datamedia-1520 terminal.
;.literal
;
; Usage:
; MOVE X,X.postion
; MOVE Y,Y.postion
; MOVE CRT,CRT.block.index
; PUSHJ P,@$CRXYP(CRT)
; (Return)
;
;.end literal
;-
D15XY: $SAVE <CH> ; Save the character
DMOVE T1,CURPOS ; Get the current position
DMOVEM X,CURPOS ; Save the current position
SUB T1+$OFSX,X ; Determine if it is an up/down/right/left by one
SUB T1+$OFSY,Y ; movement
SKIPE T1+$OFSX ; Is the X zero ?
SKIPN T1+$OFSY ; Or the Y ?
SKIPA ; Yes - Handle differently
JRST D15XYA ; No - Handle normally
SKIPN T1+$OFSY ; No change in the Y offset ?
JUMPE X,D15XYC ; Yes - Only need a CR
MOVM T3,T1+$OFSX ; Get the X offset
SOJE T3,D15XYX ; Just X by one
MOVM T3,T1+$OFSY ; Get the Y offset
SOJE T3,D15XYY ; Just the Y by one
D15XYA: SKIPN X ; Is this non-zero ?
JUMPE Y,D15XYH ; Just home it
ADDX X," " ; Convert to a position
ADDX Y," " ; Convert to a position
MOVEI T1,[$STRING(<_^^8/X/^8/Y/>)]
PJRST SC$STR ; Output the string
; Here to just home the cursor
D15XYH: $SAVE <CH> ; Save CH
MOVX CH,.CHCNY ; Get the character to send
PJRST SC$IMG ; Output the character
; Here to just output a CR
D15XYC: MOVX CH,.CHCRT ; Just output a CR
PJRST SC$IMG ; . . .
; Here to move in the X direction by one
D15XYX: SKIPGE T1+$OFSX ; Is this negative ?
SKIPA CH,[EXP .CHCBS] ; Get the charater to move right
MOVX CH,.CHCNH ; Character to move left
PJRST SC$IMG ; Output the character
; Here to move in the Y direction by one
D15XYY: SKIPL T1+$OFSY ; Is this negative ?
SKIPA CH,[EXP .CHCUN] ; Get the character
MOVX CH,.CHLFD ; To move down
PJRST SC$IMG ; Move the cursor up or down
SUBTTL Support routines -- DM-1520A -- Move cost calculation
;+
;.hl 1 D15CPP
; This routine will return the cost of moving the cursor from
;one point to another.
;.b.lit
;
; Usage:
; MOVE T1,[XWD X pos,Y pos] ; Source position
; MOVE X,[-n,,Column]
; MOVE Y,[-n,,Row]
; MOVE CRT,CRTTYP
; XCT $CRCPP(CRT)
; (return, T1= cost in characters)
;
;.end literal
;-
D15CPP: MOVE T3,T2 ; Get a copy of where we are moving to
XOR T3,T1 ; Xor together
JUMPE T3,.RET0 ; Return a zero if not moving
TXNN T3,LH.ALF ; Same X position line ?
JRST D15CPY ; Yes - Check more
TXNN T3,RH.ALF ; Same Y position ?
JRST D15CPX ; Yes - Check more
JUMPE T1,.RET2 ; If moving home return cost of one
D15CPA: MOVX T1,3 ; Have to type three characters
POPJ P, ; Return
; Here if possible same column movement
D15CPY: MOVEI T2,(T2) ; Get just the Y position
SUBI T2,(T1) ; Determine if just one line movement
MOVM T1,T2 ; . . .
SOJG T1,D15CPA ; More than one - use three
JRST .RET1 ; Else return one
; Here if possible same line movement
D15CPX: HLRZ T2,T2 ; Get just the X position
JUMPE T2,.RET1 ; If moving to the beginning of the line
; then return one
HLRZ T1,T1 ; See if moving only one position
SUBI T1,T2 ; . . .
MOVM T2,T1 ; Get the magntude
SOJG T2,D15CPA ; If more than one - return three
JRST .RET1 ; Else return one
SUBTTL Support routines -- DM-1520A -- Delete a line feed
;+
;.HL1 D15DLF
;This routine will send the character string to delete a line feed.
;.literal
;
; Usage:
; MOVE CRT,CRT.block.address
; PUSHJ P,@$CRDLF(CRT)
; (Return)
;.end literal
;-
D15DLF: MOVX CH,.CHCUN ; Get the character to send
PJRST SC$IMG ; Output it
SUBTTL Support routines -- DM-1520A -- Control-U
;+
;.HL1 D15CTU
;This routine will process the control U in the command parser. It
;may be called without CRT being set up.
;.literal
;
; Usage:
; MOVE CRT,CRT.block.address
; PUSHJ P,@$CRCTU(CRT)
; (Return)
;
;.end literal
;-
D15CTU: MOVX T1,<BYTE(7).CHCRT,.CHCRB> ; Get the characters
PUSHJ P,SC$STR ; Output the string
MOVX CH,.CHCRT ; Get the single character
PJRST T$OCHR ; And type it
SUBTTL Support routines -- DM-1520A -- Delete to end of line
;+
;.hl1 D15DEL
;This routine will delete to the end of the current line.
;.literal
;
; Usage:
; MOVEI T1,# of characters to delete
; XCT $CRDEL(CRT)
;
;.end literal
;-
D15DEL: MOVX T1,<BYTE (7).CHCRB>
PJRST SC$STR
SUBTTL Low segment
$IMPURE ; Put in correct place
DTMBEG:!
LOWVER(DTM,<.-DTMBEG>); Define the version number
SUBTTL End of TECDTM
END ; End of TECDTM