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61474a874f
and link. However, it does not work yet and thus still needs work. The *.asm files have had the following common changes: - 'keep' lines were eliminated - the 'mcopy' now takes the macro from the /obj/gno/bin/gsh directory. This is in anticipation of having the macro files generated from a single source file; there is a large amount of duplication. For the moment, the makefile merely copies the old macro files from the "M" directory to the /obj/gno/bin/gsh directory. - start each file with a dummy routine so that the source code winds up in the *.o rather than the *.root file. - added the 'setcom 60' directive; there were many source lines that were otherwise getting truncated. The makefile is a complete rewrite.
542 lines
6.2 KiB
NASM
542 lines
6.2 KiB
NASM
**************************************************************************
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*
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* The GNO Shell Project
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*
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* Developed by:
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* Jawaid Bazyar
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* Tim Meekins
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*
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* $Id: sv.asm,v 1.2 1998/04/24 15:38:45 gdr-ftp Exp $
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*
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**************************************************************************
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*
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* SV.ASM
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* By Tim Meekins
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*
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* String Vector routines.
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*
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**************************************************************************
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mcopy /obj/gno/bin/gsh/sv.mac
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dummy start ; ends up in .root
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end
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setcom 60
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**************************************************************************
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*
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* Allocate a string vector array
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*
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**************************************************************************
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sv_alloc START
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ptr equ 0
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space equ ptr+4
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subroutine (2:size),space
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lda size
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inc a ;for size and count
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inc a ;at least one null entry
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asl a
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asl a
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pea 0
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pha
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jsl ~NEW
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sta ptr
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stx ptr+2
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ldy #2
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lda size
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sta [ptr],y
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lda #0
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sta [ptr]
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ldy #4
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ldx size
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init sta [ptr],y
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iny
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iny
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sta [ptr],y
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iny
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iny
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dex
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bpl init ;not bne so that extra null at end
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add4 ptr,#4,ptr
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return 4:ptr
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END
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**************************************************************************
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*
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* Add a string to the string vector
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*
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**************************************************************************
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sv_add START
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p equ 0
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base equ p+4
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space equ base+4
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subroutine (4:vect,4:string,2:allocflag),space
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sub4 vect,#4,base
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ldy #2
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lda [base],y
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cmp [base]
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beq exit ;ack, the vector is full!
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;
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; 1 = allocate memory, 0 = use string as is...
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;
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lda allocflag
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beq asis
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pei (string+2)
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pei (string)
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jsr cstrlen
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inc a
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pea 0
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pha
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jsl ~NEW
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sta p
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stx p+2
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pei (string+2)
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pei (string)
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phx
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pha
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jsr copycstr
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bra doit
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asis mv4 string,p
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doit lda [base]
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tax
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asl a
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asl a
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tay
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lda p
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sta [vect],y
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iny
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iny
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lda p+2
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sta [vect],y
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txa
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inc a
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sta [base]
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exit return
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END
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**************************************************************************
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*
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* Dispose a string vector
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*
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**************************************************************************
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sv_dispose START
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p equ 0
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space equ p+4
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subroutine (4:vect),space
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sub4 vect,#4,p
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loop lda [p]
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beq done
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asl a
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asl a
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tay
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lda [vect],y
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tax
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iny
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iny
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lda [vect],y
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pha
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phx
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jsl nullfree
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lda [p]
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dec a
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sta [p]
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bra loop
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done pei (p+2)
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pei (p)
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jsl nullfree
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return
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END
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**************************************************************************
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*
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* Column print a string vector
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*
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**************************************************************************
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sv_colprint START
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numrow equ 0
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numcol equ numrow+2
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base equ numcol+2
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maxlen equ base+4
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space equ maxlen+2
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subroutine (4:sv),space
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sub4 sv,#4,base
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;
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; Find the maximum string length
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;
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lda #1
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sta maxlen
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ldy #0
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lda #0
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lenloop pha
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lda [sv],y
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tax
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iny
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iny
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lda [sv],y
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iny
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iny
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phy
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pha
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phx
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jsr cstrlen
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cmp maxlen
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bcc nextlen
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sta maxlen
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nextlen ply
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pla
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inc a
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cmp [base]
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bcc lenloop
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;
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; add one for a space
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;
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inc maxlen
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;
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; calculate the number of columns....this is probably simpler than doing
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; a divide..
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;
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ldx #0
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txa
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dex
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clc
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colloop inx
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adc maxlen
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cmp #80
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bcc colloop
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cpx #6+1
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bcc okcol
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ldx #6 ;limit of 6 columns
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okcol stx numcol
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;
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; recalculate the width
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;
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UDivide (#80,@x),(maxlen,@a)
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;
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; calculate the height
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;
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lda [base]
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UDivide (@a,numcol),(numrow,@x)
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cpx #0
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beq foocol
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inc numrow
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foocol anop
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;
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; find the index for each column...
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;
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lda #0
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tax
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clc
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mkidxloop sta offtbl,x
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inx
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adc numrow
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cmp [base]
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bcc mkidxloop
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;
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; well....I think we can print now (yay!)
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;
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ldx #0
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printloop lda offtbl,x
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and #$FF
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cmp [base]
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bcs nextprint0
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inc a
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short a
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sta offtbl,x
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long a
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phx
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dec a
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asl a
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asl a
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tay
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lda [sv],y
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tax
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iny
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iny
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lda [sv],y
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pha
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phx
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tax
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lda 1,s
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jsr puts
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jsr cstrlen
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tabit cmp maxlen
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bcs nextprint
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pha
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lda #' '
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jsr putchar
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pla
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inc a
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bra tabit
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nextprint plx
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inx
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cpx numcol
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bcc printloop
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nextprint0 jsr newline
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ldx #0
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dec numrow
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bne printloop
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doneprint return
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offtbl ds 7
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END
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**************************************************************************
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*
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* Sort a string vector
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*
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**************************************************************************
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sv_sort START
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space equ 0
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subroutine (4:sv),space
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pei (sv+2)
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pei (sv)
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sub4 sv,#4,sv
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pea 0
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lda [sv]
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dec a
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pha
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jsl _qsort
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return
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END
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_qsort PRIVATE
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vleft equ 0
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i equ vleft+4
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last equ i+2
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ptr2 equ last+2
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ptr1 equ ptr2+4
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idx1 equ ptr1+4
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space equ idx1+2
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subroutine (4:sv,2:left,2:right),space
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;
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; if (left >= right)
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; return;
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;
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lda right ;if one or two elements do nothing
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jmi exit
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cmp left
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jcc exit
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;
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; swap(v, left, (left + right)/2);
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;
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lda left
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asl a
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asl a
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sta idx1
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tay
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lda [sv],y
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sta ptr1
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iny
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iny
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lda [sv],y
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sta ptr1+2
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add2 left,right,@a
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lsr a
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asl a
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asl a
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tay
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lda [sv],y
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sta ptr2
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lda ptr1
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sta [sv],y
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iny
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iny
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lda [sv],y
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sta ptr2+2
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lda ptr1+2
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sta [sv],y
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ldy idx1
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lda ptr2
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sta [sv],y
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iny
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iny
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lda ptr2+2
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sta [sv],y
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;
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; last = left;
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;
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lda left
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sta last
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asl a
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asl a
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tay
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lda [sv],y
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sta vleft
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iny
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iny
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lda [sv],y
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sta vleft+2
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;
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; for (i=left+1; i <=right; i++)
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;
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lda left
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inc a
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sta i
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forloop lda i
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cmp right
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beq okloop
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bcs endloop
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okloop anop
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;
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; if (strcmp(v[i],v[left]) < 0)
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;
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asl a
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asl a
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tay
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lda [sv],y
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tax
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iny
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iny
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lda [sv],y
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pha
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phx
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pei (vleft+2)
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pei (vleft)
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jsr cmpcstr
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bpl nextloop
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;
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; swap (v, ++last, i)
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;
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inc last
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lda last
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asl a
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asl a
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sta idx1
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tay
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lda [sv],y
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sta ptr1
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iny
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iny
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lda [sv],y
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sta ptr1+2
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lda i
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asl a
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asl a
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tay
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lda [sv],y
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sta ptr2
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lda ptr1
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sta [sv],y
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iny
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iny
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lda [sv],y
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sta ptr2+2
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lda ptr1+2
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sta [sv],y
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ldy idx1
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lda ptr2
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sta [sv],y
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iny
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iny
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lda ptr2+2
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sta [sv],y
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nextloop inc i
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jmp forloop
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;
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; swap(v, left, last)
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;
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endloop lda left
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asl a
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asl a
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sta idx1
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tay
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lda [sv],y
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sta ptr1
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iny
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iny
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lda [sv],y
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sta ptr1+2
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lda last
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asl a
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asl a
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tay
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lda [sv],y
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sta ptr2
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lda ptr1
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sta [sv],y
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iny
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iny
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lda [sv],y
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sta ptr2+2
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lda ptr1+2
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sta [sv],y
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ldy idx1
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lda ptr2
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sta [sv],y
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iny
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iny
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lda ptr2+2
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sta [sv],y
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;
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; qsort(v, left, last-1)
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;
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pei (sv+2)
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pei (sv)
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pei (left)
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lda last
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dec a
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pha
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jsl _qsort
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;
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; qsort(v, last+1, right)
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;
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pei (sv+2)
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pei (sv)
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lda last
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inc a
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pha
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pei (right)
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jsl _qsort
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exit return
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END
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