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U/COMPRE2
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
Tape/disk: | Home » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_53.ADF |
Filename: | U/COMPRE2 |
Read OK: | ✔ |
File size: | 0DD1 bytes |
Load address: | FFFF1D00 |
Exec address: | FFFF802B |
Duplicates
There is 1 duplicate copy of this file in the archive:
- AEW website » eug » eug_5_25_discs_Eug-53_D-EUG53.dsd » U.COMPRE2
- Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_53.ADF » U/COMPRE2
File contents
10REM ** Text compression ** 20REM C.R.Dewhurst 5/4/2000 30MODE6:VDU23;8202;0;0;0; 40input=&70 50output=&72 60inptr=&74 70outptr=&75 80from=&76 90mask=&78 100oswrch=&FFEE 110: 120FOR pass=0 TO 2 STEP 2 130P%=&900 140[OPT pass 150.compress 160LDA #0 170STA inptr 180STA outptr 190STA mask 200: 210.cloop LDY inptr 220LDA (input),Y 230CMP #13:BNE notend 240LDA #2:JMP wrtnib 250.notend STY inptr 260PHA 270JSR chktok \token? 280BNE nottok 290LDA #1:JSR wrtnib 300LDA tokno:JSR wrtnib 310PLA:BNE cloop \always 320.nottok PLA 330INC inptr 340JSR chkcomm \common letter? 350BMI notcomm 360TYA:JSR wrtnib 370JMP cloop 380.notcomm JSR chkrare \rare letter? 390BPL okay 400BRK 410EQUB &FF 420EQUS "Illegal chararacter" 430BRK 440.okay STY from 450LDA #0:JSR wrtnib \0=next nibble a rare letter 460LDA from:JSR wrtnib 470JMP cloop 480: 490.chktok 500LDA input:CLC:ADC inptr:STA input 510LDA #0:STA tokno:STA inptr 520ADC input+1:STA input+1 530LDA #toktab MOD 256:STA from 540LDA #toktab DIV 256:STA from+1 550.ctloop LDY #0 560LDA (from),Y 570BPL notend2 \&FF=end of table 580RTS 590.notend2 STA toklen:TAX 600INC from:BNE ctloop2:INC from+1 610.ctloop2 LDA (input),Y 620CMP (from),Y 630BNE notfnd 640INY:DEX:BNE ctloop2 650STY inptr 660RTS \matched 670.notfnd INC tokno 680LDA from:CLC:ADC toklen:STA from 690BCC noc:INC from+1:.noc 700JMP ctloop \always 710.toklen BRK 720.tokno BRK 730: 740.chkcomm 750LDX #commtab MOD 256 760LDY #commtab DIV 256 770JMP scantab 780: 790.chkrare 800LDX #raretab MOD 256 810LDY #raretab DIV 256 820: 830.scantab 840STX from 850STY from+1 860LDY #15 870.stloop CMP (from),Y 880BEQ match 890DEY:BPL stloop 900.match 910\so N=1=fail N=0=found 920RTS 930: 940.wrtnib 950LDY outptr 960LDX mask 970BEQ left 980INC mask \now =0 990ORA (output),Y 1000STA (output),Y 1010INC outptr 1020RTS 1030.left ASLA:ASLA:ASLA:ASLA 1040STA (output),Y 1050DEC mask \now =&FF 1060RTS 1070: 1080.commtab 1090EQUW 0:BRK 1100\0=next nibble a rare letter 1110\1=token 1120\2=end of text 1130\3-15=common letter: 1140EQUS "etaonrishdlf " 1150.raretab 1160EQUS "cmugypwbvkxjqz,." 1170.toktab 1180] 1190RESTORE 2030 1200FOR W%=0 TO 15:READ word$ 1210[OPT pass 1220EQUB (LEN word$) 1230EQUS word$ 1240] 1250NEXT 1260[OPT pass 1270EQUB &FF 1280: 1290.expand 1300LDA #0:STA mask 1310STA inptr 1320.eloop 1330JSR getnib 1340TAX:BNE notrar2 1350JSR getnib 1360LDX #raretab MOD 256 1370LDY #raretab DIV 256 1380JSR print 1390JMP eloop 1400.notrar2 DEX 1410BNE nottok2 1420JSR getnib 1430JSR outtok 1440JMP eloop 1450.nottok2 DEX 1460BNE notend3 1470RTS 1480.notend3 LDX #commtab MOD 256 1490LDY #commtab DIV 256 1500JSR print 1510JMP eloop 1520: 1530.outtok 1540TAX 1550LDA #toktab MOD 256:STA from 1560LDA #toktab DIV 256:STA from+1 1570.otloop 1580LDY #0:LDA (from),Y 1590STA toklen 1600DEX:BMI gottok 1610CLC:ADC from:ADC #1:STA from 1620LDA from+1:ADC #0:STA from+1 1630BCC otloop \always 1640.gottok LDY #1 1650LDX toklen 1660.gtloop LDA (from),Y 1670JSR oswrch 1680INY:DEX:BPL gtloop 1690RTS 1700.print 1710STX from:STY from+1 1720TAY:LDA (from),Y 1730JMP oswrch 1740: 1750.getnib 1760LDY inptr 1770LDA (input),Y 1780LDX mask 1790BNE right 1800LSRA:LSRA:LSRA:LSRA 1810AND #15 1820DEC mask \now =&FF 1830RTS 1840.right AND #15 1850INC mask \now =0 1860INC inptr 1870RTS 1880] 1890NEXT 1900 1910DIM intext% &100,outtext% &100 1920INPUT LINE'"Type in some text",$intext% 1930oldlen%=LEN $intext% 1940!input=intext% 1950!output=outtext% 1960CALL compress 1970newlen%=?outptr 1980PRINT'"Original length:";oldlen% 1990PRINT'"Compacted length:";newlen% 2000PRINT'"Compaction factor:";100-newlen%/oldlen%*100;"%" 2010!input=outtext% 2020CALL expand 2030DATA and,but,by,can,for,get,less,more,she,that,they,the,this,was,who,you
� ** Text compression ** � C.R.Dewhurst 5/4/2000 �6:�23;8202;0;0;0; ( input=&70 2output=&72 < inptr=&74 Foutptr=&75 Pfrom=&76 Zmask=&78 doswrch=&FFEE n: x� pass=0 � 2 � 2 �P%=&900 � [OPT pass � .compress � LDA #0 � STA inptr �STA outptr �STA mask �: �.cloop LDY inptr �LDA (input),Y �CMP #13:BNE notend �LDA #2:JMP wrtnib �.notend STY inptr PHA JSR chktok \token? BNE nottok "LDA #1:JSR wrtnib ,LDA tokno:JSR wrtnib 6PLA:BNE cloop \always @.nottok PLA J INC inptr T JSR chkcomm \common letter? ^BMI notcomm hTYA:JSR wrtnib r JMP cloop |'.notcomm JSR chkrare \rare letter? �BPL okay �BRK �EQUB &FF �EQUS "Illegal chararacter" �BRK �.okay STY from �3LDA #0:JSR wrtnib \0=next nibble a rare letter �LDA from:JSR wrtnib � JMP cloop �: �.chktok �%LDA input:CLC:ADC inptr:STA input �LDA #0:STA tokno:STA inptr ADC input+1:STA input+1 LDA #toktab � 256:STA from LDA #toktab � 256:STA from+1 &.ctloop LDY #0 0LDA (from),Y :"BPL notend2 \&FF=end of table DRTS N.notend2 STA toklen:TAX X#INC from:BNE ctloop2:INC from+1 b.ctloop2 LDA (input),Y lCMP (from),Y vBNE notfnd �INY:DEX:BNE ctloop2 � STY inptr �RTS \matched �.notfnd INC tokno �$LDA from:CLC:ADC toklen:STA from �BCC noc:INC from+1:.noc �JMP ctloop \always �.toklen BRK �.tokno BRK �: �.chkcomm �LDX #commtab � 256 �LDY #commtab � 256 JMP scantab : .chkrare LDX #raretab � 256 *LDY #raretab � 256 4: >.scantab HSTX from RSTY from+1 \LDY #15 f.stloop CMP (from),Y p BEQ match zDEY:BPL stloop � .match �\so N=1=fail N=0=found �RTS �: �.wrtnib �LDY outptr �LDX mask �BEQ left �INC mask \now =0 ��A (output),Y �STA (output),Y �INC outptr �RTS .left ASLA:ASLA:ASLA:ASLA STA (output),Y DEC mask \now =&FF $RTS .: 8.commtab BEQUW 0:BRK L \0=next nibble a rare letter V\1=token `\2=end of text j\3-15=common letter: tEQUS "etaonrishdlf " ~.raretab �EQUS "cmugypwbvkxjqz,." �.toktab �] � � �dnG �� W%=0 � 15:� word$ � [OPT pass �EQUB (� word$) �EQUS word$ �] �� � [OPT pass �EQUB &FF : .expand LDA #0:STA mask STA inptr ( .eloop 2JSR getnib <TAX:BNE notrar2 FJSR getnib PLDX #raretab � 256 ZLDY #raretab � 256 d JSR print n JMP eloop x.notrar2 DEX �BNE nottok2 �JSR getnib �JSR outtok � JMP eloop �.nottok2 DEX �BNE notend3 �RTS �.notend3 LDX #commtab � 256 �LDY #commtab � 256 � JSR print � JMP eloop �: �.outtok TAX LDA #toktab � 256:STA from LDA #toktab � 256:STA from+1 ".otloop ,LDY #0:LDA (from),Y 6STA toklen @DEX:BMI gottok J CLC:ADC from:ADC #1:STA from T LDA from+1:ADC #0:STA from+1 ^BCC otloop \always h.gottok LDY #1 rLDX toklen |.gtloop LDA (from),Y �JSR oswrch �INY:DEX:BPL gtloop �RTS � .print �STX from:STY from+1 �TAY:LDA (from),Y �JMP oswrch �: �.getnib � LDY inptr �LDA (input),Y �LDX mask � BNE right LSRA:LSRA:LSRA:LSRA � #15 DEC mask \now =&FF &RTS 0.right � #15 :INC mask \now =0 D INC inptr NRTS X] b� l v � intext% &100,outtext% &100 �$� �'"Type in some text",$intext% �oldlen%=� $intext% �!input=intext% �!output=outtext% �� compress �newlen%=?outptr � �'"Original length:";oldlen% �!�'"Compacted length:";newlen% �6�'"Compaction factor:";100-newlen%/oldlen%*100;"%" �!input=outtext% �� expand �I� and,but,by,can,for,get,less,more,she,that,they,the,this,was,who,you �
00000000 0d 00 0a 1c f4 20 2a 2a 20 54 65 78 74 20 63 6f |..... ** Text co| 00000010 6d 70 72 65 73 73 69 6f 6e 20 2a 2a 0d 00 14 1b |mpression **....| 00000020 f4 20 43 2e 52 2e 44 65 77 68 75 72 73 74 20 35 |. C.R.Dewhurst 5| 00000030 2f 34 2f 32 30 30 30 0d 00 1e 16 eb 36 3a ef 32 |/4/2000.....6:.2| 00000040 33 3b 38 32 30 32 3b 30 3b 30 3b 30 3b 0d 00 28 |3;8202;0;0;0;..(| 00000050 0d 69 6e 70 75 74 3d 26 37 30 0d 00 32 0e 6f 75 |.input=&70..2.ou| 00000060 74 70 75 74 3d 26 37 32 0d 00 3c 0d 69 6e 70 74 |tput=&72..<.inpt| 00000070 72 3d 26 37 34 0d 00 46 0e 6f 75 74 70 74 72 3d |r=&74..F.outptr=| 00000080 26 37 35 0d 00 50 0c 66 72 6f 6d 3d 26 37 36 0d |&75..P.from=&76.| 00000090 00 5a 0c 6d 61 73 6b 3d 26 37 38 0d 00 64 10 6f |.Z.mask=&78..d.o| 000000a0 73 77 72 63 68 3d 26 46 46 45 45 0d 00 6e 05 3a |swrch=&FFEE..n.:| 000000b0 0d 00 78 14 e3 20 70 61 73 73 3d 30 20 b8 20 32 |..x.. pass=0 . 2| 000000c0 20 88 20 32 0d 00 82 0b 50 25 3d 26 39 30 30 0d | . 2....P%=&900.| 000000d0 00 8c 0d 5b 4f 50 54 20 70 61 73 73 0d 00 96 0d |...[OPT pass....| 000000e0 2e 63 6f 6d 70 72 65 73 73 0d 00 a0 0a 4c 44 41 |.compress....LDA| 000000f0 20 23 30 0d 00 aa 0d 53 54 41 20 69 6e 70 74 72 | #0....STA inptr| 00000100 0d 00 b4 0e 53 54 41 20 6f 75 74 70 74 72 0d 00 |....STA outptr..| 00000110 be 0c 53 54 41 20 6d 61 73 6b 0d 00 c8 05 3a 0d |..STA mask....:.| 00000120 00 d2 14 2e 63 6c 6f 6f 70 20 4c 44 59 20 69 6e |....cloop LDY in| 00000130 70 74 72 0d 00 dc 11 4c 44 41 20 28 69 6e 70 75 |ptr....LDA (inpu| 00000140 74 29 2c 59 0d 00 e6 16 43 4d 50 20 23 31 33 3a |t),Y....CMP #13:| 00000150 42 4e 45 20 6e 6f 74 65 6e 64 0d 00 f0 15 4c 44 |BNE notend....LD| 00000160 41 20 23 32 3a 4a 4d 50 20 77 72 74 6e 69 62 0d |A #2:JMP wrtnib.| 00000170 00 fa 15 2e 6e 6f 74 65 6e 64 20 53 54 59 20 69 |....notend STY i| 00000180 6e 70 74 72 0d 01 04 07 50 48 41 0d 01 0e 17 4a |nptr....PHA....J| 00000190 53 52 20 63 68 6b 74 6f 6b 20 20 5c 74 6f 6b 65 |SR chktok \toke| 000001a0 6e 3f 0d 01 18 0e 42 4e 45 20 6e 6f 74 74 6f 6b |n?....BNE nottok| 000001b0 0d 01 22 15 4c 44 41 20 23 31 3a 4a 53 52 20 77 |..".LDA #1:JSR w| 000001c0 72 74 6e 69 62 0d 01 2c 18 4c 44 41 20 74 6f 6b |rtnib..,.LDA tok| 000001d0 6e 6f 3a 4a 53 52 20 77 72 74 6e 69 62 0d 01 36 |no:JSR wrtnib..6| 000001e0 19 50 4c 41 3a 42 4e 45 20 63 6c 6f 6f 70 20 5c |.PLA:BNE cloop \| 000001f0 61 6c 77 61 79 73 0d 01 40 0f 2e 6e 6f 74 74 6f |always..@..notto| 00000200 6b 20 50 4c 41 0d 01 4a 0d 49 4e 43 20 69 6e 70 |k PLA..J.INC inp| 00000210 74 72 0d 01 54 20 4a 53 52 20 63 68 6b 63 6f 6d |tr..T JSR chkcom| 00000220 6d 20 20 5c 63 6f 6d 6d 6f 6e 20 6c 65 74 74 65 |m \common lette| 00000230 72 3f 0d 01 5e 0f 42 4d 49 20 6e 6f 74 63 6f 6d |r?..^.BMI notcom| 00000240 6d 0d 01 68 12 54 59 41 3a 4a 53 52 20 77 72 74 |m..h.TYA:JSR wrt| 00000250 6e 69 62 0d 01 72 0d 4a 4d 50 20 63 6c 6f 6f 70 |nib..r.JMP cloop| 00000260 0d 01 7c 27 2e 6e 6f 74 63 6f 6d 6d 20 4a 53 52 |..|'.notcomm JSR| 00000270 20 63 68 6b 72 61 72 65 20 20 5c 72 61 72 65 20 | chkrare \rare | 00000280 6c 65 74 74 65 72 3f 0d 01 86 0c 42 50 4c 20 6f |letter?....BPL o| 00000290 6b 61 79 0d 01 90 07 42 52 4b 0d 01 9a 0c 45 51 |kay....BRK....EQ| 000002a0 55 42 20 26 46 46 0d 01 a4 1e 45 51 55 53 20 22 |UB &FF....EQUS "| 000002b0 49 6c 6c 65 67 61 6c 20 63 68 61 72 61 72 61 63 |Illegal chararac| 000002c0 74 65 72 22 0d 01 ae 07 42 52 4b 0d 01 b8 12 2e |ter"....BRK.....| 000002d0 6f 6b 61 79 20 53 54 59 20 66 72 6f 6d 0d 01 c2 |okay STY from...| 000002e0 33 4c 44 41 20 23 30 3a 4a 53 52 20 77 72 74 6e |3LDA #0:JSR wrtn| 000002f0 69 62 20 20 5c 30 3d 6e 65 78 74 20 6e 69 62 62 |ib \0=next nibb| 00000300 6c 65 20 61 20 72 61 72 65 20 6c 65 74 74 65 72 |le a rare letter| 00000310 0d 01 cc 17 4c 44 41 20 66 72 6f 6d 3a 4a 53 52 |....LDA from:JSR| 00000320 20 77 72 74 6e 69 62 0d 01 d6 0d 4a 4d 50 20 63 | wrtnib....JMP c| 00000330 6c 6f 6f 70 0d 01 e0 05 3a 0d 01 ea 0b 2e 63 68 |loop....:.....ch| 00000340 6b 74 6f 6b 0d 01 f4 25 4c 44 41 20 69 6e 70 75 |ktok...%LDA inpu| 00000350 74 3a 43 4c 43 3a 41 44 43 20 69 6e 70 74 72 3a |t:CLC:ADC inptr:| 00000360 53 54 41 20 69 6e 70 75 74 0d 01 fe 1e 4c 44 41 |STA input....LDA| 00000370 20 23 30 3a 53 54 41 20 74 6f 6b 6e 6f 3a 53 54 | #0:STA tokno:ST| 00000380 41 20 69 6e 70 74 72 0d 02 08 1b 41 44 43 20 69 |A inptr....ADC i| 00000390 6e 70 75 74 2b 31 3a 53 54 41 20 69 6e 70 75 74 |nput+1:STA input| 000003a0 2b 31 0d 02 12 1e 4c 44 41 20 23 74 6f 6b 74 61 |+1....LDA #tokta| 000003b0 62 20 83 20 32 35 36 3a 53 54 41 20 66 72 6f 6d |b . 256:STA from| 000003c0 0d 02 1c 20 4c 44 41 20 23 74 6f 6b 74 61 62 20 |... LDA #toktab | 000003d0 81 20 32 35 36 3a 53 54 41 20 66 72 6f 6d 2b 31 |. 256:STA from+1| 000003e0 0d 02 26 12 2e 63 74 6c 6f 6f 70 20 4c 44 59 20 |..&..ctloop LDY | 000003f0 23 30 0d 02 30 10 4c 44 41 20 28 66 72 6f 6d 29 |#0..0.LDA (from)| 00000400 2c 59 0d 02 3a 22 42 50 4c 20 6e 6f 74 65 6e 64 |,Y..:"BPL notend| 00000410 32 20 20 5c 26 46 46 3d 65 6e 64 20 6f 66 20 74 |2 \&FF=end of t| 00000420 61 62 6c 65 0d 02 44 07 52 54 53 0d 02 4e 1b 2e |able..D.RTS..N..| 00000430 6e 6f 74 65 6e 64 32 20 53 54 41 20 74 6f 6b 6c |notend2 STA tokl| 00000440 65 6e 3a 54 41 58 0d 02 58 23 49 4e 43 20 66 72 |en:TAX..X#INC fr| 00000450 6f 6d 3a 42 4e 45 20 63 74 6c 6f 6f 70 32 3a 49 |om:BNE ctloop2:I| 00000460 4e 43 20 66 72 6f 6d 2b 31 0d 02 62 1a 2e 63 74 |NC from+1..b..ct| 00000470 6c 6f 6f 70 32 20 4c 44 41 20 28 69 6e 70 75 74 |loop2 LDA (input| 00000480 29 2c 59 0d 02 6c 10 43 4d 50 20 28 66 72 6f 6d |),Y..l.CMP (from| 00000490 29 2c 59 0d 02 76 0e 42 4e 45 20 6e 6f 74 66 6e |),Y..v.BNE notfn| 000004a0 64 0d 02 80 17 49 4e 59 3a 44 45 58 3a 42 4e 45 |d....INY:DEX:BNE| 000004b0 20 63 74 6c 6f 6f 70 32 0d 02 8a 0d 53 54 59 20 | ctloop2....STY | 000004c0 69 6e 70 74 72 0d 02 94 11 52 54 53 20 20 5c 6d |inptr....RTS \m| 000004d0 61 74 63 68 65 64 0d 02 9e 15 2e 6e 6f 74 66 6e |atched.....notfn| 000004e0 64 20 49 4e 43 20 74 6f 6b 6e 6f 0d 02 a8 24 4c |d INC tokno...$L| 000004f0 44 41 20 66 72 6f 6d 3a 43 4c 43 3a 41 44 43 20 |DA from:CLC:ADC | 00000500 74 6f 6b 6c 65 6e 3a 53 54 41 20 66 72 6f 6d 0d |toklen:STA from.| 00000510 02 b2 1b 42 43 43 20 6e 6f 63 3a 49 4e 43 20 66 |...BCC noc:INC f| 00000520 72 6f 6d 2b 31 3a 2e 6e 6f 63 0d 02 bc 16 4a 4d |rom+1:.noc....JM| 00000530 50 20 63 74 6c 6f 6f 70 20 5c 61 6c 77 61 79 73 |P ctloop \always| 00000540 0d 02 c6 0f 2e 74 6f 6b 6c 65 6e 20 42 52 4b 0d |.....toklen BRK.| 00000550 02 d0 0e 2e 74 6f 6b 6e 6f 20 42 52 4b 0d 02 da |....tokno BRK...| 00000560 05 3a 0d 02 e4 0c 2e 63 68 6b 63 6f 6d 6d 0d 02 |.:.....chkcomm..| 00000570 ee 16 4c 44 58 20 23 63 6f 6d 6d 74 61 62 20 83 |..LDX #commtab .| 00000580 20 32 35 36 0d 02 f8 16 4c 44 59 20 23 63 6f 6d | 256....LDY #com| 00000590 6d 74 61 62 20 81 20 32 35 36 0d 03 02 0f 4a 4d |mtab . 256....JM| 000005a0 50 20 73 63 61 6e 74 61 62 0d 03 0c 05 3a 0d 03 |P scantab....:..| 000005b0 16 0c 2e 63 68 6b 72 61 72 65 0d 03 20 16 4c 44 |...chkrare.. .LD| 000005c0 58 20 23 72 61 72 65 74 61 62 20 83 20 32 35 36 |X #raretab . 256| 000005d0 0d 03 2a 16 4c 44 59 20 23 72 61 72 65 74 61 62 |..*.LDY #raretab| 000005e0 20 81 20 32 35 36 0d 03 34 05 3a 0d 03 3e 0c 2e | . 256..4.:..>..| 000005f0 73 63 61 6e 74 61 62 0d 03 48 0c 53 54 58 20 66 |scantab..H.STX f| 00000600 72 6f 6d 0d 03 52 0e 53 54 59 20 66 72 6f 6d 2b |rom..R.STY from+| 00000610 31 0d 03 5c 0b 4c 44 59 20 23 31 35 0d 03 66 18 |1..\.LDY #15..f.| 00000620 2e 73 74 6c 6f 6f 70 20 43 4d 50 20 28 66 72 6f |.stloop CMP (fro| 00000630 6d 29 2c 59 0d 03 70 0d 42 45 51 20 6d 61 74 63 |m),Y..p.BEQ matc| 00000640 68 0d 03 7a 12 44 45 59 3a 42 50 4c 20 73 74 6c |h..z.DEY:BPL stl| 00000650 6f 6f 70 0d 03 84 0a 2e 6d 61 74 63 68 0d 03 8e |oop.....match...| 00000660 1a 5c 73 6f 20 4e 3d 31 3d 66 61 69 6c 20 4e 3d |.\so N=1=fail N=| 00000670 30 3d 66 6f 75 6e 64 0d 03 98 07 52 54 53 0d 03 |0=found....RTS..| 00000680 a2 05 3a 0d 03 ac 0b 2e 77 72 74 6e 69 62 0d 03 |..:.....wrtnib..| 00000690 b6 0e 4c 44 59 20 6f 75 74 70 74 72 0d 03 c0 0c |..LDY outptr....| 000006a0 4c 44 58 20 6d 61 73 6b 0d 03 ca 0c 42 45 51 20 |LDX mask....BEQ | 000006b0 6c 65 66 74 0d 03 d4 15 49 4e 43 20 6d 61 73 6b |left....INC mask| 000006c0 20 20 5c 6e 6f 77 20 3d 30 0d 03 de 11 84 41 20 | \now =0.....A | 000006d0 28 6f 75 74 70 75 74 29 2c 59 0d 03 e8 12 53 54 |(output),Y....ST| 000006e0 41 20 28 6f 75 74 70 75 74 29 2c 59 0d 03 f2 0e |A (output),Y....| 000006f0 49 4e 43 20 6f 75 74 70 74 72 0d 03 fc 07 52 54 |INC outptr....RT| 00000700 53 0d 04 06 1d 2e 6c 65 66 74 20 41 53 4c 41 3a |S.....left ASLA:| 00000710 41 53 4c 41 3a 41 53 4c 41 3a 41 53 4c 41 0d 04 |ASLA:ASLA:ASLA..| 00000720 10 12 53 54 41 20 28 6f 75 74 70 75 74 29 2c 59 |..STA (output),Y| 00000730 0d 04 1a 17 44 45 43 20 6d 61 73 6b 20 20 5c 6e |....DEC mask \n| 00000740 6f 77 20 3d 26 46 46 0d 04 24 07 52 54 53 0d 04 |ow =&FF..$.RTS..| 00000750 2e 05 3a 0d 04 38 0c 2e 63 6f 6d 6d 74 61 62 0d |..:..8..commtab.| 00000760 04 42 0e 45 51 55 57 20 30 3a 42 52 4b 0d 04 4c |.B.EQUW 0:BRK..L| 00000770 20 5c 30 3d 6e 65 78 74 20 6e 69 62 62 6c 65 20 | \0=next nibble | 00000780 61 20 72 61 72 65 20 6c 65 74 74 65 72 0d 04 56 |a rare letter..V| 00000790 0c 5c 31 3d 74 6f 6b 65 6e 0d 04 60 12 5c 32 3d |.\1=token..`.\2=| 000007a0 65 6e 64 20 6f 66 20 74 65 78 74 0d 04 6a 18 5c |end of text..j.\| 000007b0 33 2d 31 35 3d 63 6f 6d 6d 6f 6e 20 6c 65 74 74 |3-15=common lett| 000007c0 65 72 3a 0d 04 74 18 45 51 55 53 20 22 65 74 61 |er:..t.EQUS "eta| 000007d0 6f 6e 72 69 73 68 64 6c 66 20 22 0d 04 7e 0c 2e |onrishdlf "..~..| 000007e0 72 61 72 65 74 61 62 0d 04 88 1b 45 51 55 53 20 |raretab....EQUS | 000007f0 22 63 6d 75 67 79 70 77 62 76 6b 78 6a 71 7a 2c |"cmugypwbvkxjqz,| 00000800 2e 22 0d 04 92 0b 2e 74 6f 6b 74 61 62 0d 04 9c |.".....toktab...| 00000810 05 5d 0d 04 a6 0a f7 20 8d 64 6e 47 0d 04 b0 17 |.]..... .dnG....| 00000820 e3 20 57 25 3d 30 20 b8 20 31 35 3a f3 20 77 6f |. W%=0 . 15:. wo| 00000830 72 64 24 0d 04 ba 0d 5b 4f 50 54 20 70 61 73 73 |rd$....[OPT pass| 00000840 0d 04 c4 12 45 51 55 42 20 28 a9 20 77 6f 72 64 |....EQUB (. word| 00000850 24 29 0d 04 ce 0e 45 51 55 53 20 77 6f 72 64 24 |$)....EQUS word$| 00000860 0d 04 d8 05 5d 0d 04 e2 05 ed 0d 04 ec 0d 5b 4f |....].........[O| 00000870 50 54 20 70 61 73 73 0d 04 f6 0c 45 51 55 42 20 |PT pass....EQUB | 00000880 26 46 46 0d 05 00 05 3a 0d 05 0a 0b 2e 65 78 70 |&FF....:.....exp| 00000890 61 6e 64 0d 05 14 13 4c 44 41 20 23 30 3a 53 54 |and....LDA #0:ST| 000008a0 41 20 6d 61 73 6b 0d 05 1e 0d 53 54 41 20 69 6e |A mask....STA in| 000008b0 70 74 72 0d 05 28 0a 2e 65 6c 6f 6f 70 0d 05 32 |ptr..(..eloop..2| 000008c0 0e 4a 53 52 20 67 65 74 6e 69 62 0d 05 3c 13 54 |.JSR getnib..<.T| 000008d0 41 58 3a 42 4e 45 20 6e 6f 74 72 61 72 32 0d 05 |AX:BNE notrar2..| 000008e0 46 0e 4a 53 52 20 67 65 74 6e 69 62 0d 05 50 16 |F.JSR getnib..P.| 000008f0 4c 44 58 20 23 72 61 72 65 74 61 62 20 83 20 32 |LDX #raretab . 2| 00000900 35 36 0d 05 5a 16 4c 44 59 20 23 72 61 72 65 74 |56..Z.LDY #raret| 00000910 61 62 20 81 20 32 35 36 0d 05 64 0d 4a 53 52 20 |ab . 256..d.JSR | 00000920 70 72 69 6e 74 0d 05 6e 0d 4a 4d 50 20 65 6c 6f |print..n.JMP elo| 00000930 6f 70 0d 05 78 10 2e 6e 6f 74 72 61 72 32 20 44 |op..x..notrar2 D| 00000940 45 58 0d 05 82 0f 42 4e 45 20 6e 6f 74 74 6f 6b |EX....BNE nottok| 00000950 32 0d 05 8c 0e 4a 53 52 20 67 65 74 6e 69 62 0d |2....JSR getnib.| 00000960 05 96 0e 4a 53 52 20 6f 75 74 74 6f 6b 0d 05 a0 |...JSR outtok...| 00000970 0d 4a 4d 50 20 65 6c 6f 6f 70 0d 05 aa 10 2e 6e |.JMP eloop.....n| 00000980 6f 74 74 6f 6b 32 20 44 45 58 0d 05 b4 0f 42 4e |ottok2 DEX....BN| 00000990 45 20 6e 6f 74 65 6e 64 33 0d 05 be 07 52 54 53 |E notend3....RTS| 000009a0 0d 05 c8 1f 2e 6e 6f 74 65 6e 64 33 20 4c 44 58 |.....notend3 LDX| 000009b0 20 23 63 6f 6d 6d 74 61 62 20 83 20 32 35 36 0d | #commtab . 256.| 000009c0 05 d2 16 4c 44 59 20 23 63 6f 6d 6d 74 61 62 20 |...LDY #commtab | 000009d0 81 20 32 35 36 0d 05 dc 0d 4a 53 52 20 70 72 69 |. 256....JSR pri| 000009e0 6e 74 0d 05 e6 0d 4a 4d 50 20 65 6c 6f 6f 70 0d |nt....JMP eloop.| 000009f0 05 f0 05 3a 0d 05 fa 0b 2e 6f 75 74 74 6f 6b 0d |...:.....outtok.| 00000a00 06 04 07 54 41 58 0d 06 0e 1e 4c 44 41 20 23 74 |...TAX....LDA #t| 00000a10 6f 6b 74 61 62 20 83 20 32 35 36 3a 53 54 41 20 |oktab . 256:STA | 00000a20 66 72 6f 6d 0d 06 18 20 4c 44 41 20 23 74 6f 6b |from... LDA #tok| 00000a30 74 61 62 20 81 20 32 35 36 3a 53 54 41 20 66 72 |tab . 256:STA fr| 00000a40 6f 6d 2b 31 0d 06 22 0b 2e 6f 74 6c 6f 6f 70 0d |om+1.."..otloop.| 00000a50 06 2c 17 4c 44 59 20 23 30 3a 4c 44 41 20 28 66 |.,.LDY #0:LDA (f| 00000a60 72 6f 6d 29 2c 59 0d 06 36 0e 53 54 41 20 74 6f |rom),Y..6.STA to| 00000a70 6b 6c 65 6e 0d 06 40 12 44 45 58 3a 42 4d 49 20 |klen..@.DEX:BMI | 00000a80 67 6f 74 74 6f 6b 0d 06 4a 20 43 4c 43 3a 41 44 |gottok..J CLC:AD| 00000a90 43 20 66 72 6f 6d 3a 41 44 43 20 23 31 3a 53 54 |C from:ADC #1:ST| 00000aa0 41 20 66 72 6f 6d 0d 06 54 20 4c 44 41 20 66 72 |A from..T LDA fr| 00000ab0 6f 6d 2b 31 3a 41 44 43 20 23 30 3a 53 54 41 20 |om+1:ADC #0:STA | 00000ac0 66 72 6f 6d 2b 31 0d 06 5e 16 42 43 43 20 6f 74 |from+1..^.BCC ot| 00000ad0 6c 6f 6f 70 20 5c 61 6c 77 61 79 73 0d 06 68 12 |loop \always..h.| 00000ae0 2e 67 6f 74 74 6f 6b 20 4c 44 59 20 23 31 0d 06 |.gottok LDY #1..| 00000af0 72 0e 4c 44 58 20 74 6f 6b 6c 65 6e 0d 06 7c 18 |r.LDX toklen..|.| 00000b00 2e 67 74 6c 6f 6f 70 20 4c 44 41 20 28 66 72 6f |.gtloop LDA (fro| 00000b10 6d 29 2c 59 0d 06 86 0e 4a 53 52 20 6f 73 77 72 |m),Y....JSR oswr| 00000b20 63 68 0d 06 90 16 49 4e 59 3a 44 45 58 3a 42 50 |ch....INY:DEX:BP| 00000b30 4c 20 67 74 6c 6f 6f 70 0d 06 9a 07 52 54 53 0d |L gtloop....RTS.| 00000b40 06 a4 0a 2e 70 72 69 6e 74 0d 06 ae 17 53 54 58 |....print....STX| 00000b50 20 66 72 6f 6d 3a 53 54 59 20 66 72 6f 6d 2b 31 | from:STY from+1| 00000b60 0d 06 b8 14 54 41 59 3a 4c 44 41 20 28 66 72 6f |....TAY:LDA (fro| 00000b70 6d 29 2c 59 0d 06 c2 0e 4a 4d 50 20 6f 73 77 72 |m),Y....JMP oswr| 00000b80 63 68 0d 06 cc 05 3a 0d 06 d6 0b 2e 67 65 74 6e |ch....:.....getn| 00000b90 69 62 0d 06 e0 0d 4c 44 59 20 69 6e 70 74 72 0d |ib....LDY inptr.| 00000ba0 06 ea 11 4c 44 41 20 28 69 6e 70 75 74 29 2c 59 |...LDA (input),Y| 00000bb0 0d 06 f4 0c 4c 44 58 20 6d 61 73 6b 0d 06 fe 0d |....LDX mask....| 00000bc0 42 4e 45 20 72 69 67 68 74 0d 07 08 17 4c 53 52 |BNE right....LSR| 00000bd0 41 3a 4c 53 52 41 3a 4c 53 52 41 3a 4c 53 52 41 |A:LSRA:LSRA:LSRA| 00000be0 0d 07 12 09 80 20 23 31 35 0d 07 1c 17 44 45 43 |..... #15....DEC| 00000bf0 20 6d 61 73 6b 20 20 5c 6e 6f 77 20 3d 26 46 46 | mask \now =&FF| 00000c00 0d 07 26 07 52 54 53 0d 07 30 10 2e 72 69 67 68 |..&.RTS..0..righ| 00000c10 74 20 80 20 23 31 35 0d 07 3a 15 49 4e 43 20 6d |t . #15..:.INC m| 00000c20 61 73 6b 20 20 5c 6e 6f 77 20 3d 30 0d 07 44 0d |ask \now =0..D.| 00000c30 49 4e 43 20 69 6e 70 74 72 0d 07 4e 07 52 54 53 |INC inptr..N.RTS| 00000c40 0d 07 58 05 5d 0d 07 62 05 ed 0d 07 6c 05 20 0d |..X.]..b....l. .| 00000c50 07 76 20 de 20 69 6e 74 65 78 74 25 20 26 31 30 |.v . intext% &10| 00000c60 30 2c 6f 75 74 74 65 78 74 25 20 26 31 30 30 0d |0,outtext% &100.| 00000c70 07 80 24 e8 20 86 27 22 54 79 70 65 20 69 6e 20 |..$. .'"Type in | 00000c80 73 6f 6d 65 20 74 65 78 74 22 2c 24 69 6e 74 65 |some text",$inte| 00000c90 78 74 25 0d 07 8a 16 6f 6c 64 6c 65 6e 25 3d a9 |xt%....oldlen%=.| 00000ca0 20 24 69 6e 74 65 78 74 25 0d 07 94 12 21 69 6e | $intext%....!in| 00000cb0 70 75 74 3d 69 6e 74 65 78 74 25 0d 07 9e 14 21 |put=intext%....!| 00000cc0 6f 75 74 70 75 74 3d 6f 75 74 74 65 78 74 25 0d |output=outtext%.| 00000cd0 07 a8 0e d6 20 63 6f 6d 70 72 65 73 73 0d 07 b2 |.... compress...| 00000ce0 13 6e 65 77 6c 65 6e 25 3d 3f 6f 75 74 70 74 72 |.newlen%=?outptr| 00000cf0 0d 07 bc 20 f1 27 22 4f 72 69 67 69 6e 61 6c 20 |... .'"Original | 00000d00 6c 65 6e 67 74 68 3a 22 3b 6f 6c 64 6c 65 6e 25 |length:";oldlen%| 00000d10 0d 07 c6 21 f1 27 22 43 6f 6d 70 61 63 74 65 64 |...!.'"Compacted| 00000d20 20 6c 65 6e 67 74 68 3a 22 3b 6e 65 77 6c 65 6e | length:";newlen| 00000d30 25 0d 07 d0 36 f1 27 22 43 6f 6d 70 61 63 74 69 |%...6.'"Compacti| 00000d40 6f 6e 20 66 61 63 74 6f 72 3a 22 3b 31 30 30 2d |on factor:";100-| 00000d50 6e 65 77 6c 65 6e 25 2f 6f 6c 64 6c 65 6e 25 2a |newlen%/oldlen%*| 00000d60 31 30 30 3b 22 25 22 0d 07 da 13 21 69 6e 70 75 |100;"%"....!inpu| 00000d70 74 3d 6f 75 74 74 65 78 74 25 0d 07 e4 0c d6 20 |t=outtext%..... | 00000d80 65 78 70 61 6e 64 0d 07 ee 49 dc 20 61 6e 64 2c |expand...I. and,| 00000d90 62 75 74 2c 62 79 2c 63 61 6e 2c 66 6f 72 2c 67 |but,by,can,for,g| 00000da0 65 74 2c 6c 65 73 73 2c 6d 6f 72 65 2c 73 68 65 |et,less,more,she| 00000db0 2c 74 68 61 74 2c 74 68 65 79 2c 74 68 65 2c 74 |,that,they,the,t| 00000dc0 68 69 73 2c 77 61 73 2c 77 68 6f 2c 79 6f 75 0d |his,was,who,you.| 00000dd0 ff |.| 00000dd1