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A2osX/SCMASM.30/SCMASM.S.RLINE.txt

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NEW
AUTO 3,1
*--------------------------------------
.MA JTBL
.DA #$]1,]2-1
.EM
*--------------------------------
CHAR.TABLES
CHARS.FOR.COMMANDS .EQ *-CHAR.TABLES
>JTBL 22,ECHO.LINE "--ECHO REST OF LINE
>JTBL 2D,PASS.CMD.TO.PRODOS DASH COMMAND
>JTBL 2E,USER.CMD .--USER DOT COMMAND
>JTBL 2F,LINK.FSE /--LINK TO F.S.E.
>JTBL 3F,HELP ?--list commands
>JTBL 00,NML other, try numbered line
*--------------------------------
CHARS.FOR.READ.LINE.1 .EQ *-CHAR.TABLES
>JTBL 83,RDL.CATALOG ^C--MACRO FOR "CATALOG"
>JTBL 85,RDL.EDIT ^E--MACRO FOR "EDIT "
>JTBL 86,RDL.FIND ^F--MACRO FOR "FIND "
>JTBL 8C,RDL.LIST ^L--MACRO FOR "LIST "
>JTBL 90,RDL.PREFIX ^P--MACRO FOR "PREFIX"
CHARS.FOR.READ.LINE.2 .EQ *-CHAR.TABLES
>JTBL 88,RDL.BACKSPACE ^H--BACKSPACE
>JTBL 8A,RDL.DOWN ^J--DOWN ARROW KEY
>JTBL 8B,RDL.UP ^K--UP ARROW KEY
>JTBL 8D,RDL.EOL ^M--CARRIAGE RETURN
>JTBL 8F,RDL.OVERRIDE ^O--OVERRIDE
>JTBL 93,RDL.TOGGLE ^S--TOGGLE CASE FLAG
>JTBL 95,RDL.RITARR ^U--RIGHT ARROW
>JTBL 98,RDL.RUBOUT ^X--RUBOUT LINE
>JTBL 9B,RDL.ESCAPE ESC--ESCAPE MODE
>JTBL 00,RDL.ERR
*--------------------------------
CHARS.FOR.ESCAPE .EQ *-CHAR.TABLES
>JTBL C0,IO.HOME @--CLEAR SCREEN AND HOME
>JTBL C1,IO.RIGHT A--MOVE CURSOR RIGHT
>JTBL C2,IO.LEFT B--MOVE CURSOR LEFT
>JTBL C3,IO.DOWN C--MOVE CURSOR DOWN
>JTBL C4,IO.UP D--MOVE CURSOR UP
>JTBL C5,IO.CLREOL E--CLEAR TO END OF LINE
>JTBL C6,IO.CLREOP F--CLEAR TO END OF SCREEN
>JTBL C9,IO.UP I--MOVE CURSOR UP
>JTBL CA,IO.LEFT J--MOVE CURSOR LEFT
>JTBL CB,IO.RIGHT K--MOVE CURSOR RIGHT
>JTBL CC,ESCAPE.L L--"LOAD ..." OR "*---..."
>JTBL CD,IO.DOWN M--MOVE CURSOR DOWN
>JTBL D3,ESCAPE.S S--AUTO-SAVE LINE
>JTBL D5,USER.ESC.U U--USER COMMAND
>JTBL AE,ESCAPE.DOT .--LIS., COMMAND
>JTBL 88,IO.LEFT ^H--LEFT ARROW KEY
>JTBL 95,IO.RIGHT ^U--RIGHT ARROW KEY
>JTBL 8A,IO.DOWN ^J--DOWN ARROW KEY
>JTBL 8B,IO.UP ^K--UP ARROW KEY
>JTBL 00,RDL.ESC.END END ESCAPE MODE
*--------------------------------
CHARS.FOR.EDIT .EQ *-CHAR.TABLES
>JTBL 80,E.ZAP ^@ -- Clear to EOL
>JTBL 81,E.INS ^A -- Add (Insert)
>JTBL 82,E.BEG ^B
>JTBL 84,E.DEL ^D
>JTBL 86,E.FIND ^F
>JTBL 88,E.BKSP ^H
>JTBL 89,E.TABI ^I -- Clear to tab
>JTBL 8C,E.DOWN ^L
>JTBL 8D,E.RET ^M
>JTBL 8E,E.END ^N
>JTBL 8F,E.OVR ^O
>JTBL 91,E.RETQ ^Q -- Clear to EOL, Quit
>JTBL 92,E.RESTORE ^R -- Restore original line
>JTBL 93,E.TOGGLE ^S -- TOGGLE CASE FLAG
>JTBL 94,E.TAB ^T
>JTBL 95,E.RIT ^U
>JTBL 98,E.ABORT ^X
>JTBL 00,E.ILLCHAR
*--------------------------------
RDL.TOGGLE
JSR IO.CASE.TOGGLE
JMP RDL3
*--------------------------------
RDL.UP
JSR IO.UP
JMP RDL3
*--------------------------------
RDL.DOWN
JSR IO.DOWN
JMP RDL3
*--------------------------------
* HANDLE TABULATION
*--------------------------------
TAB TXA SEE IF IN COLUMN 1
BEQ .4 YES, AUTO-LINE-NUMBER
.3 JSR E.CHECK.TAB
BCS .5 ONE MORE SPACE
LDA #CHR.BLANK
JSR INSTALL.CHAR
BCC .3 MORE TO GO
JMP RDL.RUBOUT
*--------------------------------
.4 CLC ADD INCREMENT TO CURRENT LINE #
LDA CURLNO
ADC INCREMENT.VALUE
STA CURRENT.LINE.NUMBER
LDA CURLNO+1
ADC INCREMENT.VALUE+1
STA CURRENT.LINE.NUMBER+1
LDY #0
JSR CONVERT.LINE.NUMBER.BOTH STORE AND PRINT NUMBER
TYA
TAX
*--------------------------------
.5 LDA #CHR.BLANK
JMP RDL.ADD.CHAR
*--------------------------------
* READ LINE SUBROUTINE
*--------------------------------
READ.LINE
JSR GET.HORIZ.POSN
TAX TEST FOR POSITION=0
BEQ RDL1 DON'T OUTPUT CRLF
RDL0 JSR CRLF
RDL1 LDA PROMPT.FLAG
JSR CHO NULL, "I", OR "H"
LDA #':' COLON PROMPT
JSR CHO
LDX #0 START NEW LINE
STX WBUF CLEAR OUT "$" FROM COL. 1 (JUST IN CASE)
BIT AUTOLN.FLAG SEE IF IN "AUTO" MODE
BMI TAB ...YES
RDL3 JSR READ.KEY.WITH.CASE
BCS RDL.ESCAPE.2E
LDY WBUF SEE IF IN $ OR " MODE
CPY #$A2 "?
BEQ .2
CPY #$A4 $?
BEQ .2
CMP TAB.CHAR <<ALLOW TAB.CHAR TO BE NON-CTRL
BEQ TAB
LDY #CHARS.FOR.READ.LINE.1
.HS 2C
.2 LDY #CHARS.FOR.READ.LINE.2
CMP #CHR.BLANK SEE IF CONTROL CHAR
BCS RDL.ADD.CHAR NO
STA CURRENT.CHAR
JMP SEARCH.CHAR.TABLES
*--------------------------------
RDL.ERR
JSR MON.BELL ALARM IF NOT ONE OF THE ABOVE
JMP RDL3 AND IGNORE IT
*--------------------------------
RDL.OVERRIDE
JSR READ.KEY.WITH.CASE
JMP RDL.ADD.CHAR
*--------------------------------
RDL.RITARR
JSR GET.HORIZ.POSN
TAY
JSR IO.PICK.SCREEN
RDL.ADD.CHAR
JSR INSTALL.CHAR
BCC RDL3 STILL ROOM FOR MORE
RDL.RUBOUT
LDA #CHR.BSLASH
JSR MON.COUT
JMP READ.LINE
*--------------------------------
RDL.BACKSPACE
LDA #$88
JSR MON.COUT PRINT BACKSPACE
TXA SEE IF OVER PROMPT
BEQ RDL0 YES, START NEW LINE
DEX NO, BACK UP BUFFER POINTER
JMP RDL3
*--------------------------------
RDL.PREFIX LDY #QM.PREFIX-QM.
.HS 2C
RDL.CATALOG LDY #QM.CATALOG-QM.
.HS 2C
RDL.LIST LDY #QM.LIST-QM.
.HS 2C
RDL.FIND LDY #QM.FIND-QM.
.HS 2C
RDL.EDIT LDY #QM.EDIT-QM.
*
CPX #0 ^C & ^E ONLY EFFECTIVE IN COL. 1
BNE RDL.ERR ...ELSE ERRONEOUS
.1 LDA QM.,Y SPELL OUT "EDIT " OR "CATALOG"
PHP SAVE TERMINATION STATUS
JSR INSTALL.CHAR
INY
PLP GET TERMINATION STATUS
BPL .1 ...NOT FINISHED YET
JMP RDL3
*--------------------------------
* HANDLE ESCAPE EDITING
*--------------------------------
RDL.ESCAPE
JSR READ.KEY.WITH.CASE
RDL.ESCAPE.2E
JSR ELIMINATE.CASE
STA CURRENT.CHAR
LDY #CHARS.FOR.ESCAPE
JSR SEARCH.CHAR.TABLES
LDA CURRENT.CHAR
CMP #"L" STAR DASH LINE?
BEQ RDL.EOL ...YES, FINISH IT OFF
CMP #$A0 CHECK FOR ARROW KEYS (//E)
BCC RDL.ESCAPE ...YES, STAY IN ESCAPE MODE
CMP #$C9 IJKM?
BCC RDL4 ...NO, LEAVE ESCAPE MODE
CMP #$CE
BCC RDL.ESCAPE ...YES, STAY IN ESCAPE MODE
BCS RDL4 ...NO, LEAVE ESCAPE MODE
RDL.ESC.END
PLA
PLA
RDL4 JMP RDL3
*--------------------------------
RDL.EOL
JSR IO.CLREOL
LDA #CHR.RETURN
STA WBUF,X
JSR MY.COUT
LDY #0
STY MON.MODE
INY
LDA WBUF GET FIRST CHAR
CMP #CHR.DOLLAR
BEQ FAKE.MONITOR
JMP RDL.STRIP.LINE
*--------------------------------
* FAKE MONITOR
*--------------------------------
FMN1 CPX $FBC0 //C ID BYTE (X = 0 OR 1)
BCC .1 ...NOT //C (//C = 0, OTHERS > 1)
DEY
BMI FMN3 ...NOT VALID COMMAND
CPY #$13
BCS FMN2
.1 JSR MON.TOSUB
LDY MON.YSAV
FAKE.MONITOR
JSR FMN5 INDIRECT TO MON.GETNUM
STY MON.YSAV
CMP #$C6 $8D EOR $B0 PLUS $89
BEQ FMN4 ...<RETURN>
LDY #22 # CMDS - 1
FMN2 CMP MON.CHRTBL,Y
BEQ FMN1 ...FOUND CMD IN TABLE
DEY ...NEXT ENTRY
BPL FMN2 ...NEXT ENTRY
FMN3 JSR MON.BELL ...NOT IN TABLE
JMP READ.LINE
FMN4 LDA MON.MODE <RETURN> COMMAND
LDY #0
DEC MON.YSAV
JSR MON.BL1
JMP READ.LINE
FMN5 JMP ($FF74) MON.GETNUM CALL
*--------------------------------
* ESCAPE-L
* COLUMN 0: LOAD A FILE
* COL. 1-N: MAKE "*------" LINE
*--------------------------------
ESCAPE.L
TXA
BEQ .3 "LOAD ...."
*---GENERATE STAR-DASH LINE------
LDA #CHR.STAR
.1 JSR INSTALL.CHAR
LDA USER.COM.DELIM
CPX #38
BCC .1
.2 RTS
*---GENERATE LOAD COMMAND--------
.3 JSR IO.HTABX HTAB TO FIRST COLUMN
LDY #QBLOADB " LOAD "
JSR QT.OUT
LDX #22
JSR IO.HTABX
JSR GET.DOS.CMD.OFF.SCRN
PLA POP RETURN ADDRESS
PLA
JMP RDL.EOL SUBMIT COMMAND
*--------------------------------
* ESC-S AUTO SAVE LINE
*--------------------------------
ESCAPE.S
TXA
BNE .4 ...NOT IN COLUMN 1
JSR SETUP.TEXT.POINTERS
LDX #10 MUST APPEAR IN FIRST 10 LINES
.1 LDY #3 POINT TO FIRST TEXT CHAR OF LINE
LDA (SRCP),Y
JSR CHECK.COMMENT.CHAR
BEQ .5
.2 DEX PAST 10TH LINE?
BMI .4 ...YES, LOOK NO FURTHER
LDY #0 POINT TO LENGTH
LDA (SRCP),Y
CLC
ADC SRCP
STA SRCP
BCC .3
INC SRCP+1
.3 JSR CMP.SRCP.ENDP PAST END OF PROGRAM?
BCC .1 ...NO, KEEP LOOKING
.4 RTS
.5 INY
LDA (SRCP),Y
BEQ .2 ...END OF LINE
CMP #'S'
BNE .5
JSR LIST.CURRENT.LINE
*--------------------------------
GET.DOS.CMD.OFF.SCRN
JSR IO.CLREOL
LDY #0 NOW PICK 0...39 OFF SCREEN
LDX #0 BUT NO BLANKS
.1 JSR IO.PICK.SCREEN
STA WBUF,X STORE IN BUFFER
INY
CMP #" " ELIMINATE BLANKS
BEQ .2 ...BLANK
INX
.2 CPY #39
BCC .1
.3 DEY
JSR IO.PICK.SCREEN
CMP #" "
BEQ .3
INY
TYA
JMP IO.HTAB POSITION AFTER LAST NON-BLANK
*--------------------------------
* INSTALL CHARACTER IN INPUT BUFFER
*--------------------------------
INSTALL.CHAR
ORA #$80 ASSURE SIGN BIT ON
STA WBUF,X STORE IN INPUT BUFFER
CMP #$A0 CONTROL CHAR?
BCS .1 ...NO
AND #$3F ...YES, DISPLAY AS INVERSE
.1 JSR IO.COUT ECHO ON SCREEN
CPX #WBUF.MAX SEE IF END OF BUFFER
BCS .2 ...YES
INX
RTS
.2 JSR MON.BELL
SEC
RTS
*--------------------------------
* STRIP SIGN BITS OFF ALL BYTES
* AND CHANGE <CR> TO <EOL>
*--------------------------------
RDL.STRIP.LINE
LDY #$FF LOOP TO CLEAR HIGH BITS
.1 INY
LDA WBUF,Y
AND #$7F STRIP OFF BIT
CMP #$0D WAS IT THE END?
BNE .2 NOT YET
LDA #0 YES, SUBSTITUTE <EOL> FOR <CR>
.2 STA WBUF,Y
BNE .1 UNTIL <EOL>
TAX CLEAR X-REG
RTS
*--------------------------------
ESCAPE.DOT
TXA
BNE .5 NOT IN COLUMN 1, IGNORE IT
JSR GET.HORIZ.POSN FIND CURSOR POSITION
TAY
.1 JSR IO.PICK.SCREEN
AND #$7F
JSR CHECK.DIGIT
BCC .2 NOT A DIGIT
STA WBUF+4,X
INX
INY
BNE .1 ...ALWAYS
.2 TXA
BEQ .3 ...NO DIGITS
LDA #4
STA CHAR.PNTR
STA WBUF+4,X
LDX #CURLNO-A0L
JSR SCAN.1.DECIMAL.NUMBER
.3 LDY #4
LDX #0
.4 LDA LDC,Y
JSR INSTALL.CHAR
DEY
BPL .4
STA CURRENT.CHAR at end, current.char = comma
JSR IO.CLREOP
.5 RTS
*--------------------------------
LDC .AS /,.SIL/
*--------------------------------
QM.
QM.EDIT .AT /EDIT /
QM.CATALOG .AT /CATALOG/
QM.PREFIX .AT /PREFIX/
QM.LIST .AT /LIST /
QM.FIND .AT /FIND /
*--------------------------------------
MAN
SAVE usr/src/scmasm.30/scmasm.s.rline
LOAD usr/src/scmasm.30/scmasm.s
ASM
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