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GRABBER

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 » CEEFAX disks » telesoftware2.adl
Filename: GRABBER
Read OK:
File size: 2692 bytes
Load address: 1A00
Exec address: 8023
File contents
   10ONERRORGOTO3370
   20REM PAGE GRABBER
   30REM By J R Crellin
   40REM Based on News by R J J Orton
   50REM Version 2
   60filesystem=FNfs
   70IF filesystem<>4 AND filesystem<>8 THEN PROCerror(100,"Only ADFS or DFS please!")
   80IF filesystem=8 THEN ADFS=TRUE ELSE ADFS=FALSE
   90IF NOT ADFS THEN140
  100ONERRORGOTO3220
  110*DIR $.pages
  120ONERRORGOTO3290
  130*DIR $.frames
  140ONERRORGOTO3370
  150MODE 7
  160D%=1
  170PROCinit
  180D%=2
  190PROCchoose
  200D%=3
  210PROCgrabber
  220D%=4
  230PROCdisplay
  240PROCerror(200,"FINISHED")
  250END
  260:
  270DEFPROCinit
  280*FX4,1
  290TIME=0
  300np%=30:save%=1:shown%=0:stime%=TIME+1000000
  310DIM block% 18,ospace 100
  320DIM list%(np%-1)
  330FOR N%=0 TO np%-1
  340DIM x 79
  350FOR n%= x TO x+75 STEP 4
  360!n%=0
  370NEXT
  380list%(N%)=x
  390NEXT
  400DIM P%(np%)
  410P%(np%)=0
  420DIM sp%(np%),lsp%(np%),cp%(5),dp%(7),round%(np%),finds%(np%)
  430FOR N%= 0 TO np%
  440sp%(N%)=0:lsp%(N%)=0:round%(N%)=0:finds%(N%)=0
  450NEXT
  460DIM X%-1
  470PROCprint(0,10,"Enter channel required",6)
  480PRINTTAB(1,13)CHR$130;">>";
  490INPUT""CH%
  500IF CH%>4 OR CH%<1 THEN CLS:GOTO470
  510IF CH%>2 THEN CRCsig=FALSE ELSE CRCsig=TRUE
  520RESTORE5240
  530REPEAT
  540REPEAT
  550READ X$
  560UNTIL X$="#"
  570READ X$
  580UNTIL VAL(X$)=CH%
  590IF CH%>2 THEN rows=24 ELSE rows=30
  600*TTXON
  610PROCoscli("CH"+STR$(CH%))
  620?block%=7
  630block%?1=rows
  640PROCow:REM no of rows
  650space=HIMEM-X%-1200
  660rec%=space DIV (30*42+10)
  670IF rec%>20 THEN rec%=20
  680rec%=rec%-2
  690DIM record(rec%),pt%(rec%)
  700FOR N%=0TOrec%
  710DIM x 30*42
  720record(N%)=x
  730NEXT
  740space=record(0)
  750ENDPROC
  760:
  770DEFPROCgrabber
  780CLS
  790*HON
  800PROCoff
  810PRINTTAB(0,1)"�Searching for:-";
  820?block%=14:PROCow:REM clear records
  830B%=0
  840REPEAT
  850PB%=P%(B%)
  860PROCsetup(B%,PB%,B%)
  870B%=B%+1
  880UNTIL P%(B%)=0 OR B%>rec%
  890rec%=B%-1
  900PROCcheck
  910ENDPROC
  920:
  930DEFPROCsetup(E%,p%,ln%)
  940pt%(E%)=ln%
  950PRINTTAB(0,E%+3)"�P"STR$(p%);SPC(39-POS);
  960PROCsetrec(E%,p%)
  970ENDPROC
  980:
  990DEFPROCow
 1000LOCAL A%,X%,Y%
 1010X%=block% MOD 256
 1020Y%=block% DIV 256
 1030A%=&7A
 1040CALL &FFF1
 1050ENDPROC
 1060:
 1070DEFFNbcd(X%)
 1080IF X%>99 THEN PROCerror(99,"!!!")
 1090topnib%=X% DIV 10
 1100botnib%=X% MOD 10
 1110=topnib%*16+botnib%
 1120:
 1130DEFPROCerror(X%,X$)
 1140$space=CHR$0+CHR$(X%)+X$+CHR$0
 1150CALL space
 1160ENDPROC
 1170:
 1180DEFPROCcheck
 1190LOCAL E%
 1200REPEAT
 1210finished=TRUE
 1220FOR E%=0 TO rec%
 1230IF (finds%(pt%(E%))=0) AND (TIME-stime%>10000) THEN P%(pt%(E%))=0
 1240IF P%(pt%(E%))=0 THEN 1270
 1250finished = FALSE
 1260IF FNready(E%) THEN PROCsave(E%)
 1270NEXT
 1280UNTIL finished
 1290ENDPROC
 1300:
 1310DEFPROCcrc
 1320LOCAL l%
 1330IF CRC=0 THEN list%(R%)?L%=0:ENDPROC
 1340l%=list%(R%)?L%
 1350IF l%=0 THEN list%(R%)?L%=CRC:GOTO1390
 1360IF l%>&FD THEN list%(R%)?L%=l%-1:GOTO1390
 1370IF l%=&FD THEN list%(R%)?L%=0:GOTO1390
 1380ENDPROC
 1390PROCrep(CRC,list%(R%)?L%)
 1400ENDPROC
 1410:
 1420DEFPROCsave(Y%)
 1430LOCAL L%,N%,R%
 1440R%=pt%(Y%)
 1450?block%=3:block%?1=Y%:block%?2=1:PROCow:REM HOLD
 1460SP%=FNsp(record(Y%)):IF MAX%>0 THEN sp%(Y%)=MAX%+&100
 1470IF SP%>79 OR SP%<0 THEN SP%=0
 1480PRINTTAB(0,22)CHR$132STR$(P%(R%))"/"STR$(SP%)"  "
 1490IF sp%(R%)>0 THEN IF (SP%=0 AND lsp%(R%)<>0) THEN SP%=lsp%(R%)+1
 1500L%=SP%-1:IF L%=-1 THEN L%=0
 1510IF CRC>0 OR (list%(R%)?(L%)>240) THEN PROCcrc
 1520IF SP%=0 AND (?list%(R%)=0 OR round%(R%)=3) THEN ?list%(R%)=save%:PROCssave:P%(R%)=0:PROCsetupanother(Y%):GOTO1700
 1530IF (list%(R%)?(L%))=0 THEN list%(R%)?(L%)=save%:PROCssave
 1540IF ((sp%(R%) AND &FF)<SP%) THEN sp%(R%)=SP%:GOTO1670
 1550IF SP%<lsp%(R%) THEN sp%(R%)=lsp%(R%) OR &100
 1560IF SP%=0 OR (SP%<lsp%(R%)) THENround%(R%)=round%(R%)+1
 1570l%=sp%(R%) AND &FF:IF l%=0 THEN l%=1
 1580IF (finds%(R%) DIV l%) > 5 THEN PROCfillin(R%):complete=TRUE:GOTO1660
 1590IF (sp%(R%) AND &100)=0 OR SP%=0 THEN 1670
 1600complete=TRUE
 1610FOR N%=1 TO (sp%(R%) AND &FF)
 1620l%=list%(R%)?(N%-1)
 1630IF l%=0 OR l%>240 THEN complete=FALSE
 1640NEXT
 1650IF round%(R%)>4 THEN PROCfillin(R%):complete=TRUE
 1660IF complete THEN P%(R%)=0:PRINTTAB(7,Y%+3)"�found"SPC(39-POS);:PROCsetupanother(Y%):GOTO1700
 1670?block%=3:block%?1=Y%:block%?2=0:PROCow
 1680lsp%(R%)=SP%
 1690finds%(R%)=finds%(R%)+1
 1700ENDPROC
 1710:
 1720DEFPROCsetupanother(X%)
 1730IF P%(B%)=0 THEN stime%=TIME:ENDPROC
 1740PB%=P%(B%)
 1750PROCsetup(X%,PB%,B%)
 1760B%=B%+1
 1770ENDPROC
 1780:
 1790DEFPROCssave
 1800PRINTTAB(1,0)STR$(P%(R%));
 1810IF (sp%(R%) AND &100) THEN X$=" of "+STR$(sp%(R%) AND &FF) ELSE X$=""
 1820IF SP%=0 THENPRINTTAB(7,Y%+3)"�found";SPC(39-POS); ELSE PRINTTAB(7,Y%+3)"�Subpage�";STR$(SP%);X$"�found"SPC(39-POS);
 1830X$=FNdir(save%)
 1840IF save%>240 THEN 3510
 1850PROCoscli ("SAVE "+X$+STR$(save%)+" "+STR$~(record(Y%))+" +4E0")
 1860save%=save%+1
 1870ENDPROC
 1880:
 1890DEFPROCrep(C,E%)
 1900IF C=&FF THEN M$=" No CRC   " ELSE M$=" Bad CRC  "
 1910PRINTTAB(0,18)CHR$129;STR$(P%(R%))"/"STR$(SP%)M$;CHR$132;STR$~(E%)"   "
 1920ENDPROC
 1930:
 1940DEFPROCdisplay
 1950RESTORE 5180
 1960FOR n%=1 TO CH%
 1970READ CH$
 1980NEXT
 1990*HOFF
 2000?block%=14:PROCow
 2010LOCAL N%,n%,next%,X%
 2020FOR N%=0 TO np%-1
 2030n%=0
 2040REPEAT
 2050next%=list%(N%)?n%
 2060IF next%=0 THEN 2250
 2070IF next%=&FF THEN VDU26,12:PROCprint(2,10,"MISSING PAGE",5):GOTO2170
 2080X$=FNdir(next%)
 2090IF next%>240 THEN PROCerror(100,"Run out!")
 2100shown%=shown%+1
 2110PROCoscli("LOAD "+X$+STR$(next%)+" "+STR$~(space))
 2120PROCoscli("DISPLAY "+STR$~(space))
 2130PRINTTAB(0,0)CHR$134;FNfulp(space);CHR$135;
 2140PROCw
 2150PRINT"�RETURN(print) TAB(dump) ](next) R [";
 2160PROCoff
 2170REPEAT X$=GET$:UNTIL INSTR("bBsSrR ��"+CHR$9+CHR$13,X$)
 2180IF X$=CHR$9 THEN PROCdumproutine(1)
 2190IF X$=CHR$13 THEN PROCdumproutine(2)
 2200IF X$="�" OR X$="b" OR X$="B" THEN PROCback:GOTO2250
 2210IF X$="r" OR X$="R" THEN PROCreveal:GOTO2170
 2220IF NOT ADFS AND(X$="s" OR X$="S") THEN PROCoscli("SAVE "+FNfulp(space)+" 7C00 8000"):GOTO2170
 2230IF ADFS AND(X$="s" OR X$="S") THEN PROCoscli("SAVE "+"^.pages."+CH$+FNfulp(space)+" 7C00 8000"):GOTO2170
 2240n%=n%+1
 2250UNTIL next%=0
 2260NEXT
 2270ENDPROC
 2280:
 2290DEFPROCback
 2300IF n%>0 THEN n%=n%-1:ENDPROC
 2310IF N%>0 THEN N%=N%-2:next%=0
 2320ENDPROC
 2330:
 2340DEFFNfulp(E%)
 2350LOCAL S%,P%
 2360P%=100*?E%
 2370S%=E%?2
 2380P%=P%+(S% AND &F0)*10 DIV16 +(S% AND &F)
 2390S%=FNsp(E%)
 2400IF S%>0 THEN=STR$(P%)+"/"+STR$(FNsp(E%)) ELSE =STR$(P%)
 2410:
 2420DEFFNsp(E%)
 2430LOCAL S%
 2440S%=75
 2450found=FALSE
 2460REPEAT
 2470S%=S%+1
 2480IF ((E%?S%)AND &7F)=ASC"/" THEN found=TRUE
 2490UNTIL found OR S%=85
 2500IF NOT found THEN SP%=0:MAX%=-1:GOTO2530
 2510SP%=FNeval(S%-2)
 2520MAX%=FNeval(S%+1)
 2530S%=E%?4
 2540SP2%=(S% AND &70) *10 DIV 16 +(S% AND &F)
 2550S%=E%?3
 2560SP2%=SP2%+(S% AND &30) *1000 DIV 16 +(S% AND &F)*100
 2570IF SP%<=0 OR SP%>79 THEN=SP2%
 2580IF SP2%=0 THEN =SP%
 2590IF SP%<>SP2% THEN = SP2%
 2600=SP%
 2610:
 2620DEFFNeval(C%)
 2630LOCAL S%,U%
 2640U%=0:S%=(E%?C%)AND &7F
 2650IF S%>&2F AND S%<&3A THEN U%=(S%-&30)
 2660S%=(E%?(C%+1)) AND &7F
 2670IF S%>&2F AND S%<&3A THEN U%=U%*10+(S%-&30)
 2680=U%
 2690:
 2700DEFPROCchoose
 2710R%=0
 2720*HON
 2730?block%=14:PROCow
 2740N%=0
 2750REPEAT
 2760READ X$
 2770IF X$="!" THEN GOTO2820
 2780IF N%=rec% THEN X$="!":GOTO2820
 2790N%=N%+1
 2800P%=VAL(X$)
 2810dp%(N%)=P%:PROCsetrec(N%,P%)
 2820UNTIL X$="!"
 2830E%=1
 2840REPEAT
 2850READ X$
 2860cp%(E%)=VAL(X$)
 2870E%=E%+1
 2880UNTIL X$="#"
 2890REPEAT
 2900finished =TRUE
 2910FOR E%=1 TO N%
 2920IF R%>=30 THEN 2950
 2930IF (dp%(E%) AND &1000)=0 THENIF FNready(E%) THEN dp%(E%)=dp%(E%) OR &1000:PROCinput(E%)
 2940IF (dp%(E%) AND &1000)=0 THEN finished =FALSE
 2950NEXT
 2960UNTIL finished
 2970R%=0
 2980ENDPROC
 2990:
 3000DEFPROCinput(Y%)
 3010PROCoscli("DISPLAY "+STR$~(record(Y%)))
 3020PROCsetrec(Y%,0):REM clear?
 3030PROCoff
 3040current%=dp%(Y%) AND&FFF
 3050PRINTTAB(0,0)"�"STR$(current%);
 3060PROCw
 3070fin=FALSE
 3080REPEAT
 3090X%=FNcheckpage
 3100IF X%=0 THEN fin=TRUE:GOTO3170
 3110FOR n%=0 TO R%-1
 3120IF X%=P%(n%) THEN VDU7:PRINT"Chosen!  ";:GOTO3170
 3130NEXT
 3140P%(R%)=X%
 3150R%=R%+1
 3160IF R%>=30 THEN fin=TRUE
 3170UNTIL fin
 3180dp%(Y%)=&1000
 3190VDU26
 3200ENDPROC
 3210:
 3220IF ERR<>214 THEN 3370
 3230*CDIR pages
 3240*CDIR pages.BBC1
 3250*CDIR pages.BBC2
 3260*CDIR pages.ITV
 3270*CDIR pages.CH4
 3280RUN
 3290IF ERR<>214 THEN 3370
 3300*CDIR frames
 3310*CDIR frames.41
 3320*CDIR frames.42
 3330*CDIR frames.43
 3340*CDIR frames.44
 3350*CDIR frames.45
 3360RUN
 3370ONERROROFF
 3380*HOFF
 3390VDU3
 3400MODE 7
 3410IF ERR=17 AND INKEY(-2) THEN 3430
 3420IF ERR =17 OR ERR=179 OR ERR=198 OR ERR=190 THEN 3500
 3430*TTXOFF
 3440PRINT'''
 3450*FX4
 3460IF ADFS THEN*DIR ^
 3470REPORT
 3480PRINT" at "ERL
 3490END
 3500ONERRORGOTO3370
 3510ON D% GOTO 3430,180,3520,3430
 3520PROCcleanup:GOTO220
 3530:
 3540DEFPROCprint(X%,Y%,X$,C%)
 3550PRINTTAB(X%,Y%)CHR$141;CHR$(128+C%);X$
 3560PRINTTAB(X%,Y%+1)CHR$141;CHR$(128+C%);X$
 3570ENDPROC
 3580:
 3590DEFPROCsetrec(N%,P%)
 3600?block%=2:block%?1=N%:block%?2=0:PROCow
 3610IF (block%?2 AND 4)=4 THENPROCdel(20):GOTO3600
 3620?block%=5
 3630block%?1=N%
 3640block%?2=P% DIV 100
 3650block%?3=FNbcd(P% MOD 100)
 3660block%?4=&3F
 3670block%?5=&7F
 3680block%?6=record(N%) MOD 256
 3690block%?7=record(N%) DIV 256
 3700PROCow
 3710?block%=3
 3720block%?1=N%
 3730block%?2=0
 3740PROCow:REM init flag
 3750ENDPROC
 3760:
 3770DEFFNready(X%)
 3780LOCAL N%,n%
 3790CRC=0
 3800?block%=2
 3810block%?1=X%
 3820block%?2=0
 3830PROCow:REM check flag
 3840IF (block%?2 AND 4)=4 THEN PROCdel(20):GOTO3800
 3850IF (block%?2 AND 2)=0 THEN =FALSE
 3860?block%=23
 3870block%?1=record(X%) MOD 256
 3880block%?2=record(X%) DIV 256
 3890block%?3=0
 3900PROCow
 3910N%=block%?3
 3920IF N%=1 THEN =TRUE
 3930FOR n%=909 TO 1256 STEP4
 3940record(X%)!n%=0
 3950NEXT
 3960IF NOT CRCsig THEN =TRUE
 3970CRC=&FF:record(X%)?10=ASC"!"
 3980IFN%=&FF THENrecord(X%)?11=ASC"!":CRC=&FE
 3990=TRUE
 4000:
 4010DEFPROCw:VDU28,0,24,39,24:ENDPROC
 4020DEFPROCoff:VDU23,1,0,0,0,0,0,0,0,0:ENDPROC
 4030DEFPROCon:VDU23,1,1,0,0,0,0,0,0,0:ENDPROC
 4040:
 4050DEFPROCcleanup
 4060FOR E%= 0 TO np%-1
 4070IF P%(E%)=0 THEN 4100
 4080IF sp%(E%)=0 AND (?list%(E%)=0 OR ?list%(E%)>240) THEN ?list%(E%)=&FF:GOTO4100
 4090PROCfillin(E%)
 4100NEXT
 4110ENDPROC
 4120:
 4130DEFPROCfillin(R%)
 4140LOCAL N%
 4150FOR N%=1 TO (sp%(R%) AND &FF)
 4160IF (list%(R%)?(N%-1)=0 OR list%(R%)?(N%-1)>240) THEN list%(R%)?(N%-1)=&FF
 4170NEXT
 4180ENDPROC
 4190:
 4200DEFPROCrequest(X%)
 4210LOCAL E%
 4220ok=FALSE:IF NOT FNwildset THENENDPROC
 4230chan%=0
 4240IF X%=0 THEN X%=current%
 4250FOR E%= 1 TO N%
 4260IF dp%(E%)=X% THEN chan%=E%
 4270NEXT
 4280IF chan%=0 THEN PROCsetrec(0,X%)
 4290PRINTTAB(0,0)"�"STR$(X%);
 4300REPEAT UNTILFNready(chan%)
 4310PROCoscli("DISPLAY "+STR$~(record(chan%)))
 4320PROCoff
 4330current%=X%
 4340PRINTTAB(0,0)"�"STR$(X%);
 4350PROCw
 4360dp%(chan%)=&1000
 4370ENDPROC
 4380:
 4390DEFFNcheckpage
 4400REPEAT
 4410INPUT"Enter page required >>"X$
 4420 IF LEFT$(X$,1)="#" THEN PROCrequest(VAL(RIGHT$(X$,LEN(X$)-1))):GOTO4440 ELSE X%=VAL(X$)
 4430ok=FNwildset
 4440UNTIL ok
 4450=X%
 4460:
 4470DEFFNwildset
 4480LOCAL E%,ok
 4490E%=1:ok=FALSE
 4500IF X%=0 THEN =TRUE
 4510T%=(X% DIV 100)*100
 4520REPEAT
 4530IF T%=cp%(E%) THEN ok=TRUE
 4540E%=E%+1
 4550UNTIL cp%(E%)=0
 4560IF NOT ok THEN VDU7
 4570=ok
 4580:
 4590DEFPROChold(E%)
 4600?block%=3
 4610block%?1=E%
 4620block%?2=block%?2 OR 1
 4630block%?2=(block%?2) OR 1
 4640ENDPROC
 4650:
 4660DEFPROCdel(T%)
 4670T%=TIME+T%
 4680REPEAT UNTIL TIME>=T%
 4690ENDPROC
 4700:
 4710DEFPROCreveal
 4720LOCALn%
 4730FOR n%=&7C00 TO &7FFF
 4740IF ?n%=152 THEN ?n%=32
 4750NEXT
 4760ENDPROC
 4770:
 4780DEFFNfs
 4790A%=0:Y%=0
 4800A%=USR(&FFDA)
 4810=A% AND &FF
 4820:
 4830DEFFNdir(n%)
 4840LOCAL dir%
 4850dir%=(n%-1) DIV 40
 4860IF dir%=0 THEN =""
 4870dir%=dir%+40
 4880=STR$(dir%)+"."
 4890:
 4900DEFPROCoscli(X$)
 4910LOCAL X%,Y%
 4920$ospace=X$
 4930X%=ospace MOD 256
 4940Y%=ospace DIV 256
 4950CALL &FFF7
 4960ENDPROC
 4970:
 4980DEFPROCdumproutine(X%)
 4990REM Commands here are for "MYROM"
 5000REM Insert suitable commands for other
 5010REM screendump roms
 5020IF X%=1 THEN 5060
 5030REM Text only dump
 5040*TEXT
 5050ENDPROC
 5060IF INKEY(-1) THEN 5120
 5070IF INKEY(-2) THEN 5150
 5080REM Screen image
 5090*IMAGE
 5100ENDPROC
 5110REM <SHIFT> makes blue = black
 5120*IMAGE NOBLUE
 5130ENDPROC
 5140REM <CTRL> gives inverted dump
 5150*IMAGE INVERT
 5160ENDPROC
 5170:
 5180DATA"BBC1","BBC2","ITV","CH4"
 5190:
 5200REM Data sets default index pages and
 5210REM allowed page numbers
 5220REM #,channel,list of index pages
 5230REM !,allowed pages (blocks of 100)
 5240DATA #,1,102,120,151,170,300,180,!,100,300
 5250DATA #,2,251,700,230,202,270,!,200,300,700
 5260DATA #,3,160,230,210,220,120,101,!,100,200
 5270DATA #,4,690,530,580,550,480,450,!,600,400,500
 5280DATA #

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� PAGE GRABBER
� By J R Crellin
("� Based on News by R J J Orton
2� Version 2
<filesystem=�fs
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���setup(E%,p%,ln%)
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2� CRC=0 � list%(R%)?L%=0:�
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�	*TEXT
��
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*IMAGE
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(�
2:
<�"BBC1","BBC2","ITV","CH4"
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P'� Data sets default index pages and
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�/� #,4,690,530,580,550,480,450,!,600,400,500
�� #
�
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00002690  0d ff                                             |..|
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GRABBER.m0
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