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01-04-89/KEYWORD

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 » telesoftware14.adl
Filename: 01-04-89/KEYWORD
Read OK:
File size: 3230 bytes
Load address: FFFF1A00
Exec address: FFFF8023
File contents
   10REM> KEYWORD
   20MODE7
   30DIM mcode &1000 :REM: space for machine code
   40DIM buffer &400 :REM: page grabber buffer
   50DIM markers &20 :REM: packet markers
   60$buffer=STRING$(40," ") :REM: clear the header
   70PROCmcode :REM: assemble machine code
   80INPUT"TV channel (1-4) = "answer$
   90channel?0=EVAL("&"+LEFT$(answer$,1))+&1B
  100IF channel?0 < &1C THEN channel?0 = &1C
  110IF channel?0 > &1F THEN channel?0 = &1F
  120INPUT"Search keyword (UPPER CASE) = "answer$
  130answer$=LEFT$(answer$,8)
  140len=LEN(answer$)-1
  150FOR pass=0 TO len
  160searchtext?pass = (ASC(MID$(answer$,pass+1,1)) OR &80)
  170NEXT
  180searchtext?(len+1)=0
  190wordlength?0=len
  200VDU12,23,1,0;0;0;0;
  210CALL mcode
  220VDU30,23,1,1;0;0;0;
  230END
  240DEFPROCmcode
  250packet=&70 :REM: row number of current packet
  260magazine=&71 :REM: magazine number of current page
  270grabflag=&72 :REM: 0=searching, &40=loading, &80=found, &C0=loaded & found
  280usermag=&73 :REM: last magazine number
  290userpage=&74 :REM: last page number, low byte + high byte
  300channel=&76 :REM: TV channel
  310workspace=&77 :REM: 2 byte workspace
  320destination=&79 :REM: another 2 byte workspace
  330wordlength=&7B :REM: length of keyword
  340tempy=&7C :REM: temporary store for Y register
  350searchfor=&7D :REM: temporary store for character in search string
  360searchtext=&80 :REM: store for keyword
  370irq2v=&206 :REM: irq2 vector
  380ttxcontrol=&FC10 :REM: TTX control register, write only
  390ttxstatus=&FC10 :REM: TTX status register, read only
  400rowreg=&FC11 :REM: TTX row register, write only
  410datareg=&FC12 :REM: TTX data register, read & write
  420statclr=&FC13 :REM: TTX clear status register, read & write
  430oswrch=&FFEE
  440osbyte=&FFF4
  450FOR pass=0 TO 2 STEP 2
  460P%=mcode
  470[OPT pass
  480JSR clearmark \ set up for searching
  490LDX irq2v \ load secondary interrupt vector
  500LDY irq2v+1
  510STX oldirq2v \ save secondary interrupt vector
  520STY oldirq2v+1
  530LDX #interrupt MOD 256 \ install new interrupt routine
  540LDY #interrupt DIV 256
  550SEI \ disable interrupts when altering vectors
  560STX irq2v
  570STY irq2v+1
  580CLI \ re-enable interrupts
  590LDA channel \ load (channel number + #&1C)
  600STA ttxcontrol \ enable TTX
  610.mainloop
  620LDA grabflag \ test to see if page grabbed
  630CMP #&C0 \ &C0 = page grabbed and ready to print
  640BNE continue \ branch if not ready
  650JSR checkdouble \ look for double height lines
  660JSR transfer \ transfer data to screen
  670JSR clearmark \ start searching again
  680.continue
  690LDX #&00 \ screen row
  700LDY #&08 \ screen column
  710JSR vdu31 \ VDU 31,8,0
  720.headloop
  730LDA buffer,Y
  740JSR oswrch \ write header on screen
  750INY
  760CPY #&28 \ decimal 40
  770BCC headloop
  780BIT &FF \ poll escape flag
  790BPL mainloop \ loop if escape not pressed
  800LDA #&7E \ decimal 126
  810JSR osbyte \ acknowledge escape
  820LDA #&00
  830STA ttxcontrol \ disable TTX
  840LDX oldirq2v \ load original vector
  850LDY oldirq2v+1
  860SEI \ disable interrupts when altering vectors
  870STX irq2v \ restore original vector
  880STY irq2v+1
  890CLI \ re-enable interrupts
  900RTS \ return to BASIC
  910.interrupt
  920BIT ttxstatus \ poll TTX hardware
  930BMI ttxinter \ branch if TTX interrupt
  940JMP (oldirq2v) \ not TTX interrupt
  950.ttxinter
  960LDA &FC \ interrupt accumulator save register
  970PHA \ push interrupt accumulator save register
  980TXA
  990PHA \ push X
 1000TYA
 1010PHA \ push Y
 1020LDA grabflag \ is a page waiting to be displayed?
 1030CMP #&C0 \ &C0 = page grabbed
 1040BEQ clearstatus \ clear status and RTI if page grabbed
 1050CLD \ clear decimal flag
 1060.startrow
 1070LDY #&00 \ start with row 0
 1080.readttxt
 1090STY rowreg \ try rows 0 to 15
 1100LDA datareg \ load framing code (#&27)
 1110BEQ emptyrow \ if zero try next row
 1120TYA
 1130PHA \ save row number
 1140JSR readpacket
 1150PLA
 1160TAY \ restore row number
 1170.emptyrow
 1180INY \ increment row number
 1190CPY #&10 \ try rows 0 - 15
 1200BNE readttxt
 1210.clearstatus
 1220LDA #&00
 1230LDY #&0F \ clear 16 rows in adaptor
 1240.clearloop
 1250STY rowreg
 1260STA datareg
 1270DEY
 1280BPL clearloop
 1290STA statclr \ clear status flags before returning
 1300PLA
 1310TAY \ restore Y
 1320PLA
 1330TAX \ restore X
 1340PLA
 1350STA &FC \ restore interrupt accumulator save register
 1360RTI \ return from interrupt
 1370.readpacket
 1380LDY datareg \ read magazine number
 1390LDA hamtable,Y \ de-ham it
 1400BMI cleargrab \ stop loading if error
 1410STA magazine \ save magazine number
 1420LDY datareg \ read packet number
 1430LDA hamtable,Y \ de-ham it
 1440BMI cleargrab \ stop loading if error
 1450STA packet \ save packet number
 1460LDA magazine \ load magazine number
 1470CMP #&08 \ bit 3 of mag. number is bit 0 of packet number
 1480ROL packet \ 5 bit packet number
 1490AND #&07 \ use only bits 0-2
 1500STA magazine \ 3 bit magazine number
 1510LDA packet
 1520CMP #&18 \ ignore TSDP, Datacast, etc.
 1530BCS exit \ ie. use Level 1 Teletext only
 1540PHA \ push packet number
 1550ASL A \ packet number * 2
 1560TAY
 1570LDA bufftable,Y \ load buffer address, lsb
 1580STA workspace \ store in zero page
 1590LDA bufftable+1,Y \ load buffer address, msb
 1600STA workspace+1 \ store in zero page
 1610PLA \ pull packet number
 1620CMP #&00 \ is it a header?
 1630BNE notheader
 1640TAX \ init index for hammed data
 1650.readheader
 1660LDY datareg \ read data register
 1670LDA hamtable,Y \ de-ham it
 1680BMI cleargrab \ stop loading if error
 1690STA buffer,X \ store de-hammed data
 1700INX \ increment index
 1710CPX #&08 \ use X = 0-7
 1720BCC readheader \ continue reading hammed data
 1730LDA grabflag \ are we loading or searching?
 1740BEQ checkstart \ branch if searching
 1750LDA magazine \ we must be loading a page
 1760CMP usermag \ is it the magazine we want?
 1770BNE exit \ branch if not the one we want
 1780LDA buffer \ low byte of page number
 1790CMP userpage \ is this the same as the one we are loading?
 1800BNE endfound \ end of page when different
 1810LDA buffer+1
 1820CMP userpage+1 \ is this the same as the one we are loading?
 1830BEQ exit \ not end of page if the same
 1840.endfound
 1850LDA grabflag \ grabflag = either #&40 or #&80
 1860ORA #&40 \ grabflag = #&C0 if keyword found
 1870STA grabflag \ update grabflag
 1880BMI exit \ branch if grabflag = #&C0
 1890.cleargrab
 1900JSR clearmark \ start searching again
 1910.exit
 1920RTS
 1930.checkstart
 1940LDA buffer+5 \ check for subtitle
 1950AND #&08 \ check bit 3
 1960BNE display \ don't load subtitle
 1970LDA buffer \ low nybble of current page
 1980CMP userpage \ are we loading it?
 1990BNE loadit \ if not then load it
 2000LDA buffer+1 \ high nybble of current page
 2010CMP userpage+1 \ are we loading it?
 2020BEQ display \ if loading display header, if not load page
 2030.loadit
 2040LDA #&40 \ page loading flag
 2050STA grabflag \ load this page
 2060LDA magazine \ current magazine number
 2070STA usermag \ load this magazine
 2080LDA buffer \ current page, low nybble
 2090STA userpage \ load this page
 2100LDA buffer+1 \ current page, high nybble
 2110STA userpage+1 \ load this page
 2120.display
 2130\LSR buffer+6 \ check for suppress header
 2140\BCS exit \ don't bother with suppressed headers
 2150LDY #&08 \ header data starts at byte 8
 2160BNE readmore \ go to read the header
 2170.notheader
 2180LDA grabflag \ is a page loading?
 2190BEQ return \ return if page not loading
 2200LDA magazine \ is the magazine number the one we want?
 2210CMP usermag \ compare with the one we are loading
 2220BNE return \ return if different magazine
 2230LDY #&00 \ read bytes 0 - 39
 2240.readmore
 2250LDA datareg \ read data register
 2260ORA #&80 \ set bit 7 for display
 2270STA (workspace),Y \ store in buffer
 2280INY \ increment index
 2290CPY #&28 \ decimal 40
 2300BNE readmore \ more data in this packet
 2310LDA packet \ load current packet number
 2320BEQ return \ return if header
 2330TAX \ A is greater than 0 and less than 24
 2340STA markers,X \ mark this as a valid packet
 2350BIT grabflag \ have we found the keyword yet?
 2360BMI return \ return if word found
 2370JSR wordsearch
 2380.return
 2390RTS
 2400.checkdouble
 2410LDX #&01 \ screen row numbers 1-23
 2420.nextcolumn
 2430LDA markers,X
 2440BMI carryset
 2450LDY #&00 \ screen column numbers 0-40
 2460JSR setup \ set up workspace for indirect addressing
 2470.singleloop
 2480LDA (workspace),Y
 2490JSR conceal \ check for concealed display
 2500CMP #&8D \ TTX double height character
 2510BEQ doubleheight
 2520INY
 2530CPY #&28 \ decimal 40
 2540BCC singleloop
 2550.carryset
 2560INX
 2570CPX #&17 \ decimal 23
 2580BCC nextcolumn
 2590RTS
 2600.doubleheight
 2610LDY #&00
 2620TXA
 2630PHA \ store row number
 2640INX
 2650TXA
 2660STA markers,X
 2670ASL A \ (row number + 1) * 2
 2680TAX
 2690LDA bufftable,X
 2700STA destination
 2710INX
 2720LDA bufftable,X
 2730STA destination+1
 2740PLA
 2750TAX \ restore row number
 2760.doubleloop
 2770LDA (workspace),Y
 2780JSR conceal \ check for concealed display
 2790STA (destination),Y
 2800INY
 2810CPY #&28 \ decimal 40
 2820BCC doubleloop
 2830INX
 2840CPX #&17 \ decimal 23
 2850BCC carryset
 2860RTS
 2870.conceal
 2880CMP #&98 \ TTX conceal display character
 2890BNE goback
 2900LDA #ASC(" ") \ substitute with a space
 2910STA (workspace),Y
 2920.goback
 2930RTS
 2940.setup
 2950TXA
 2960PHA \ store row number
 2970ASL A \ (row number) * 2
 2980TAX
 2990LDA bufftable,X
 3000STA workspace
 3010INX
 3020LDA bufftable,X
 3030STA workspace+1
 3040PLA
 3050TAX \ restore row number
 3060RTS
 3070.transfer
 3080LDA #&00
 3090TAX
 3100LDY #&02
 3110JSR vdu31 \ VDU 31,2,0
 3120LDA #ASC("P")
 3130JSR oswrch \ start printing page number
 3140LDX #&0F \ decimal 15
 3150.numberloop
 3160LDA buffer,X \ cheat by getting page number from header
 3170JSR oswrch
 3180INX
 3190CPX #&12
 3200BCC numberloop \ print 3 page bytes from header
 3210LDX #&01 \ screen rows 1-23
 3220.nextline
 3230LDY #&00 \ columns 0-39
 3240JSR vdu31 \ VDU 31,0,1-23
 3250LDA markers,X \ look for valid packet
 3260BPL markfound \ display valid packets only
 3270LDA #blanks MOD 256 \ else display 40 spaces
 3280STA workspace
 3290LDA #blanks DIV 256
 3300STA workspace+1
 3310JMP writescreen
 3320.markfound
 3330JSR setup \ set up workspace for indirect addressing
 3340.writescreen
 3350LDA (workspace),Y \ load data from buffer
 3360JSR oswrch \ write to screen
 3370INY
 3380CPY #&28 \ decimal 40
 3390BCC writescreen
 3400INX
 3410CPX #&18 \ decimal 24
 3420BCC nextline \ last packet number = 23
 3430RTS
 3440.vdu31
 3450LDA #&1F \ decimal 31
 3460JSR oswrch
 3470TYA
 3480JSR oswrch
 3490TXA
 3500JMP oswrch \ and return
 3510.wordsearch
 3520LDX #&00 \ index for search string
 3530LDY #&00 \ index for packet
 3540STY tempy \ temporary store for Y
 3550.wordloop
 3560LDA searchtext,X
 3570BEQ found
 3580PHA \ save character from keyword
 3590LDA (workspace),Y
 3600CMP #&E1 \ lower case 'a'
 3610BCC uppercase \ branch if upper case
 3620AND #&DF \ force lower to upper case
 3630.uppercase
 3640STA searchfor \ store character from TTX
 3650PLA \ restore character from keyword
 3660CMP searchfor
 3670BNE notfound \ branch if keyword does not match
 3680INX \ if matched look at next character
 3690INY
 3700CPY #&29 \ decimal 41
 3710BCC wordloop
 3720.notfound
 3730LDX #&00 \ reset index on keyword
 3740INC tempy \ increment index on TTX
 3750LDY tempy
 3760CPY #&29 \ decimal 41
 3770BCC wordloop \ branch if more data to test
 3780RTS
 3790.found
 3800LDA #&80 \ flag keyword found
 3810STA grabflag \ keyword found
 3820RTS
 3830.clearmark
 3840LDA #&80
 3850LDX #&17 \ decimal 23
 3860.loopmark
 3870STA markers,X
 3880DEX
 3890BNE loopmark
 3900STX grabflag \ grabflag = searching
 3910LDA #&0F \ end of page marker
 3920STA userpage
 3930STA userpage+1
 3940RTS
 3950.oldirq2v
 3960EQUW &00
 3970.hamtable
 3980EQUD &0101FF01
 3990EQUD &FF0100FF
 4000EQUD &FF0102FF
 4010EQUD &07FFFF0A
 4020EQUD &FF0100FF
 4030EQUD &00FF0000
 4040EQUD &0BFFFF06
 4050EQUD &FF0300FF
 4060EQUD &FF010CFF
 4070EQUD &07FFFF04
 4080EQUD &07FFFF06
 4090EQUD &070707FF
 4100EQUD &05FFFF06
 4110EQUD &FF0D00FF
 4120EQUD &FF060606
 4130EQUD &07FFFF06
 4140EQUD &FF0102FF
 4150EQUD &09FFFF04
 4160EQUD &02FF0202
 4170EQUD &FF0302FF
 4180EQUD &05FFFF08
 4190EQUD &FF0300FF
 4200EQUD &FF0302FF
 4210EQUD &0303FF03
 4220EQUD &05FFFF04
 4230EQUD &FF040404
 4240EQUD &FF0F02FF
 4250EQUD &07FFFF04
 4260EQUD &050505FF
 4270EQUD &05FFFF04
 4280EQUD &05FFFF06
 4290EQUD &FF030EFF
 4300EQUD &FF010CFF
 4310EQUD &09FFFF0A
 4320EQUD &0BFFFF0A
 4330EQUD &FF0A0A0A
 4340EQUD &0BFFFF08
 4350EQUD &FF0D00FF
 4360EQUD &0B0B0BFF
 4370EQUD &0BFFFF0A
 4380EQUD &0CFF0C0C
 4390EQUD &FF0D0CFF
 4400EQUD &FF0F0CFF
 4410EQUD &07FFFF0A
 4420EQUD &FF0D0CFF
 4430EQUD &0D0DFF0D
 4440EQUD &0BFFFF06
 4450EQUD &FF0D0EFF
 4460EQUD &09FFFF08
 4470EQUD &090909FF
 4480EQUD &FF0F02FF
 4490EQUD &09FFFF0A
 4500EQUD &FF080808
 4510EQUD &09FFFF08
 4520EQUD &0BFFFF08
 4530EQUD &FF030EFF
 4540EQUD &FF0F0CFF
 4550EQUD &09FFFF04
 4560EQUD &0F0FFF0F
 4570EQUD &FF0F0EFF
 4580EQUD &05FFFF08
 4590EQUD &FF0D0EFF
 4600EQUD &FF0F0EFF
 4610EQUD &0EFF0E0E
 4620.bufftable
 4630EQUW buffer
 4640EQUW buffer+40
 4650EQUW buffer+(2*40)
 4660EQUW buffer+(3*40)
 4670EQUW buffer+(4*40)
 4680EQUW buffer+(5*40)
 4690EQUW buffer+(6*40)
 4700EQUW buffer+(7*40)
 4710EQUW buffer+(8*40)
 4720EQUW buffer+(9*40)
 4730EQUW buffer+(10*40)
 4740EQUW buffer+(11*40)
 4750EQUW buffer+(12*40)
 4760EQUW buffer+(13*40)
 4770EQUW buffer+(14*40)
 4780EQUW buffer+(15*40)
 4790EQUW buffer+(16*40)
 4800EQUW buffer+(17*40)
 4810EQUW buffer+(18*40)
 4820EQUW buffer+(19*40)
 4830EQUW buffer+(20*40)
 4840EQUW buffer+(21*40)
 4850EQUW buffer+(22*40)
 4860EQUW buffer+(23*40)
 4870EQUW buffer+(24*40)
 4880.blanks
 4890EQUS STRING$(40," ")
 4900]
 4910NEXT
 4920ENDPROC

�> KEYWORD
�7
,� mcode &1000 :�: space for machine code
()� buffer &400 :�: page grabber buffer
2$� markers &20 :�: packet markers
<)$buffer=�40," ") :�: clear the header
F$�mcode :�: assemble machine code
P!�"TV channel (1-4) = "answer$
Z$channel?0=�("&"+�answer$,1))+&1B
d'� channel?0 < &1C � channel?0 = &1C
n'� channel?0 > &1F � channel?0 = &1F
x,�"Search keyword (UPPER CASE) = "answer$
�answer$=�answer$,8)
�len=�(answer$)-1
�� pass=0 � len
�3searchtext?pass = (�(�answer$,pass+1,1)) � &80)
��
�searchtext?(len+1)=0
�wordlength?0=len
��12,23,1,0;0;0;0;
�� mcode
��30,23,1,1;0;0;0;
��
���mcode
�/packet=&70 :�: row number of current packet
4magazine=&71 :�: magazine number of current page
Lgrabflag=&72 :�: 0=searching, &40=loading, &80=found, &C0=loaded & found
(usermag=&73 :�: last magazine number
";userpage=&74 :�: last page number, low byte + high byte
,channel=&76 :�: TV channel
6&workspace=&77 :�: 2 byte workspace
@0destination=&79 :�: another 2 byte workspace
J(wordlength=&7B :�: length of keyword
T0tempy=&7C :�: temporary store for Y register
^Dsearchfor=&7D :�: temporary store for character in search string
h(searchtext=&80 :�: store for keyword
rirq2v=&206 :�: irq2 vector
|9ttxcontrol=&FC10 :�: TTX control register, write only
�6ttxstatus=&FC10 :�: TTX status register, read only
�1rowreg=&FC11 :�: TTX row register, write only
�5datareg=&FC12 :�: TTX data register, read & write
�=statclr=&FC13 :�: TTX clear status register, read & write
�oswrch=&FFEE
�osbyte=&FFF4
�� pass=0 � 2 � 2
�P%=mcode
�
[OPT pass
�(JSR clearmark \ set up for searching
�/LDX irq2v \ load secondary interrupt vector
�LDY irq2v+1
�2STX oldirq2v \ save secondary interrupt vector
STY oldirq2v+1
8LDX #interrupt � 256 \ install new interrupt routine
LDY #interrupt � 256
&2SEI \ disable interrupts when altering vectors
0
STX irq2v
:STY irq2v+1
DCLI \ re-enable interrupts
N.LDA channel \ load (channel number + #&1C)
XSTA ttxcontrol \ enable TTX
b
.mainloop
l.LDA grabflag \ test to see if page grabbed
v4CMP #&C0 \ &C0 = page grabbed and ready to print
�&BNE continue \ branch if not ready
�2JSR checkdouble \ look for double height lines
�*JSR transfer \ transfer data to screen
�)JSR clearmark \ start searching again
�
.continue
�LDX #&00 \ screen row
�LDY #&08 \ screen column
�JSR vdu31 \ � 31,8,0
�
.headloop
�LDA buffer,Y
�'JSR oswrch \ write header on screen
�INY
�CPY #&28 \ decimal 40
BCC headloop
BIT &FF \ poll escape flag
-BPL mainloop \ loop if escape not pressed
 LDA #&7E \ decimal 126
*#JSR osbyte \ acknowledge escape
4LDA #&00
> STA ttxcontrol \ disable TTX
H'LDX oldirq2v \ load original vector
RLDY oldirq2v+1
\2SEI \ disable interrupts when altering vectors
f'STX irq2v \ restore original vector
pSTY irq2v+1
zCLI \ re-enable interrupts
�RTS \ return to BASIC
�.interrupt
�%BIT ttxstatus \ poll TTX hardware
�*BMI ttxinter \ branch if TTX interrupt
�&JMP (oldirq2v) \ not TTX interrupt
�
.ttxinter
�1LDA &FC \ interrupt accumulator save register
�2PHA \ push interrupt accumulator save register
�TXA
�PHA \ push X
�TYA
�PHA \ push Y
�5LDA grabflag \ is a page waiting to be displayed?
!CMP #&C0 \ &C0 = page grabbed
:BEQ clearstatus \ clear status and RTI if page grabbed
CLD \ clear decimal flag
$
.startrow
.LDY #&00 \ start with row 0
8
.readttxt
B!STY rowreg \ try rows 0 to 15
L*LDA datareg \ load framing code (#&27)
V'BEQ emptyrow \ if zero try next row
`TYA
jPHA \ save row number
tJSR readpacket
~PLA
�TAY \ restore row number
�
.emptyrow
�INY \ increment row number
�CPY #&10 \ try rows 0 - 15
�BNE readttxt
�.clearstatus
�LDA #&00
�'LDY #&0F \ clear 16 rows in adaptor
�.clearloop
�STY rowreg
�STA datareg
�DEY
BPL clearloop

5STA statclr \ clear status flags before returning
PLA
TAY \ restore Y
(PLA
2TAX \ restore X
<PLA
F9STA &FC \ restore interrupt accumulator save register
PRTI \ return from interrupt
Z.readpacket
d&LDY datareg \ read magazine number
nLDA hamtable,Y \ de-ham it
x)BMI cleargrab \ stop loading if error
�'STA magazine \ save magazine number
�$LDY datareg \ read packet number
�LDA hamtable,Y \ de-ham it
�)BMI cleargrab \ stop loading if error
�#STA packet \ save packet number
�'LDA magazine \ load magazine number
�=CMP #&08 \ bit 3 of mag. number is bit 0 of packet number
�$ROL packet \ 5 bit packet number
�� #&07 \ use only bits 0-2
�(STA magazine \ 3 bit magazine number
�LDA packet
�*CMP #&18 \ ignore TSDP, Datacast, etc.
�,BCS exit \ ie. use Level 1 Teletext only
PHA \ push packet number
ASL A \ packet number * 2
TAY
".LDA bufftable,Y \ load buffer address, lsb
,&STA workspace \ store in zero page
60LDA bufftable+1,Y \ load buffer address, msb
@(STA workspace+1 \ store in zero page
JPLA \ pull packet number
TCMP #&00 \ is it a header?
^BNE notheader
h$TAX \ init index for hammed data
r.readheader
|$LDY datareg \ read data register
�LDA hamtable,Y \ de-ham it
�)BMI cleargrab \ stop loading if error
�'STA buffer,X \ store de-hammed data
�INX \ increment index
�CPX #&08 \ use X = 0-7
�1BCC readheader \ continue reading hammed data
�/LDA grabflag \ are we loading or searching?
�(BEQ checkstart \ branch if searching
�,LDA magazine \ we must be loading a page
�-CMP usermag \ is it the magazine we want?
�,BNE exit \ branch if not the one we want
�(LDA buffer \ low byte of page number
�>CMP userpage \ is this the same as the one we are loading?
-BNE endfound \ end of page when different
LDA buffer+1
@CMP userpage+1 \ is this the same as the one we are loading?
&*BEQ exit \ not end of page if the same
0
.endfound
:1LDA grabflag \ grabflag = either #&40 or #&80
D.�A #&40 \ grabflag = #&C0 if keyword found
N"STA grabflag \ update grabflag
X(BMI exit \ branch if grabflag = #&C0
b.cleargrab
l)JSR clearmark \ start searching again
v	.exit
�RTS
�.checkstart
�%LDA buffer+5 \ check for subtitle
�� #&08 \ check bit 3
�%BNE display \ don't load subtitle
�+LDA buffer \ low nybble of current page
�%CMP userpage \ are we loading it?
�$BNE loadit \ if not then load it
�.LDA buffer+1 \ high nybble of current page
�'CMP userpage+1 \ are we loading it?
�=BEQ display \ if loading display header, if not load page
�.loadit
� LDA #&40 \ page loading flag
!STA grabflag \ load this page
*LDA magazine \ current magazine number
$STA usermag \ load this magazine
 )LDA buffer \ current page, low nybble
*!STA userpage \ load this page
4,LDA buffer+1 \ current page, high nybble
>#STA userpage+1 \ load this page
H.display
R-\LSR buffer+6 \ check for suppress header
\4\BCS exit \ don't bother with suppressed headers
f+LDY #&08 \ header data starts at byte 8
p(BNE readmore \ go to read the header
z.notheader
�%LDA grabflag \ is a page loading?
�+BEQ return \ return if page not loading
�:LDA magazine \ is the magazine number the one we want?
�5CMP usermag \ compare with the one we are loading
�-BNE return \ return if different magazine
� LDY #&00 \ read bytes 0 - 39
�
.readmore
�$LDA datareg \ read data register
�#�A #&80 \ set bit 7 for display
�'STA (workspace),Y \ store in buffer
�INY \ increment index
�CPY #&28 \ decimal 40
�+BNE readmore \ more data in this packet
	+LDA packet \ load current packet number
	!BEQ return \ return if header
	.TAX \ A is greater than 0 and less than 24
	$/STA markers,X \ mark this as a valid packet
	.1BIT grabflag \ have we found the keyword yet?
	8%BMI return \ return if word found
	BJSR wordsearch
	L.return
	VRTS
	`.checkdouble
	j&LDX #&01 \ screen row numbers 1-23
	t.nextcolumn
	~LDA markers,X
	�BMI carryset
	�)LDY #&00 \ screen column numbers 0-40
	�8JSR setup \ set up workspace for indirect addressing
	�.singleloop
	�LDA (workspace),Y
	�-JSR conceal \ check for concealed display
	�*CMP #&8D \ TTX double height character
	�BEQ doubleheight
	�INY
	�CPY #&28 \ decimal 40
	�BCC singleloop
	�
.carryset
INX

CPX #&17 \ decimal 23
BCC nextcolumn
RTS
(.doubleheight
2LDY #&00
<TXA
FPHA \ store row number
PINX
ZTXA
dSTA markers,X
n ASL A \ (row number + 1) * 2
xTAX
�LDA bufftable,X
�STA destination
�INX
�LDA bufftable,X
�STA destination+1
�PLA
�TAX \ restore row number
�.doubleloop
�LDA (workspace),Y
�-JSR conceal \ check for concealed display
�STA (destination),Y
�INY
�CPY #&28 \ decimal 40
BCC doubleloop
INX
CPX #&17 \ decimal 23
"BCC carryset
,RTS
6.conceal
@,CMP #&98 \ TTX conceal display character
JBNE goback
T)LDA #�(" ") \ substitute with a space
^STA (workspace),Y
h.goback
rRTS
|
.setup
�TXA
�PHA \ store row number
�ASL A \ (row number) * 2
�TAX
�LDA bufftable,X
�STA workspace
�INX
�LDA bufftable,X
�STA workspace+1
�PLA
�TAX \ restore row number
�RTS
�
.transfer
LDA #&00
TAX
LDY #&02
&JSR vdu31 \ � 31,2,0
0LDA #�("P")
:+JSR oswrch \ start printing page number
DLDX #&0F \ decimal 15
N.numberloop
X;LDA buffer,X \ cheat by getting page number from header
bJSR oswrch
lINX
vCPX #&12
�3BCC numberloop \ print 3 page bytes from header
�LDX #&01 \ screen rows 1-23
�
.nextline
�LDY #&00 \ columns 0-39
�JSR vdu31 \ � 31,0,1-23
�)LDA markers,X \ look for valid packet
�.BPL markfound \ display valid packets only
�.LDA #blanks � 256 \ else display 40 spaces
�STA workspace
�LDA #blanks � 256
�STA workspace+1
�JMP writescreen
�.markfound

8JSR setup \ set up workspace for indirect addressing

.writescreen

-LDA (workspace),Y \ load data from buffer

  JSR oswrch \ write to screen

*INY

4CPY #&28 \ decimal 40

>BCC writescreen

HINX

RCPX #&18 \ decimal 24

\*BCC nextline \ last packet number = 23

fRTS

p
.vdu31

zLDA #&1F \ decimal 31

�JSR oswrch

�TYA

�JSR oswrch

�TXA

�JMP oswrch \ and return

�.wordsearch

�&LDX #&00 \ index for search string

�LDY #&00 \ index for packet

�%STY tempy \ temporary store for Y

�
.wordloop

�LDA searchtext,X

�
BEQ found

�%PHA \ save character from keyword
LDA (workspace),Y
CMP #&E1 \ lower case 'a'
(BCC uppercase \ branch if upper case
$&� #&DF \ force lower to upper case
..uppercase
8,STA searchfor \ store character from TTX
B(PLA \ restore character from keyword
LCMP searchfor
V3BNE notfound \ branch if keyword does not match
`+INX \ if matched look at next character
jINY
tCPY #&29 \ decimal 41
~BCC wordloop
�
.notfound
�%LDX #&00 \ reset index on keyword
�&INC tempy \ increment index on TTX
�
LDY tempy
�CPY #&29 \ decimal 41
�.BCC wordloop \ branch if more data to test
�RTS
�
.found
�!LDA #&80 \ flag keyword found
� STA grabflag \ keyword found
�RTS
�.clearmark
LDA #&80

LDX #&17 \ decimal 23

.loopmark
STA markers,X
(DEX
2BNE loopmark
<'STX grabflag \ grabflag = searching
F!LDA #&0F \ end of page marker
PSTA userpage
ZSTA userpage+1
dRTS
n
.oldirq2v
xEQUW &00
�
.hamtable
�EQUD &0101FF01
�EQUD &FF0100FF
�EQUD &FF0102FF
�EQUD &07FFFF0A
�EQUD &FF0100FF
�EQUD &00FF0000
�EQUD &0BFFFF06
�EQUD &FF0300FF
�EQUD &FF010CFF
�EQUD &07FFFF04
�EQUD &07FFFF06
�EQUD &070707FF
EQUD &05FFFF06
EQUD &FF0D00FF
EQUD &FF060606
"EQUD &07FFFF06
,EQUD &FF0102FF
6EQUD &09FFFF04
@EQUD &02FF0202
JEQUD &FF0302FF
TEQUD &05FFFF08
^EQUD &FF0300FF
hEQUD &FF0302FF
rEQUD &0303FF03
|EQUD &05FFFF04
�EQUD &FF040404
�EQUD &FF0F02FF
�EQUD &07FFFF04
�EQUD &050505FF
�EQUD &05FFFF04
�EQUD &05FFFF06
�EQUD &FF030EFF
�EQUD &FF010CFF
�EQUD &09FFFF0A
�EQUD &0BFFFF0A
�EQUD &FF0A0A0A
�EQUD &0BFFFF08
�EQUD &FF0D00FF
EQUD &0B0B0BFF
EQUD &0BFFFF0A
EQUD &0CFF0C0C
&EQUD &FF0D0CFF
0EQUD &FF0F0CFF
:EQUD &07FFFF0A
DEQUD &FF0D0CFF
NEQUD &0D0DFF0D
XEQUD &0BFFFF06
bEQUD &FF0D0EFF
lEQUD &09FFFF08
vEQUD &090909FF
�EQUD &FF0F02FF
�EQUD &09FFFF0A
�EQUD &FF080808
�EQUD &09FFFF08
�EQUD &0BFFFF08
�EQUD &FF030EFF
�EQUD &FF0F0CFF
�EQUD &09FFFF04
�EQUD &0F0FFF0F
�EQUD &FF0F0EFF
�EQUD &05FFFF08
�EQUD &FF0D0EFF
�EQUD &FF0F0EFF
EQUD &0EFF0E0E
.bufftable
EQUW buffer
 EQUW buffer+40
*EQUW buffer+(2*40)
4EQUW buffer+(3*40)
>EQUW buffer+(4*40)
HEQUW buffer+(5*40)
REQUW buffer+(6*40)
\EQUW buffer+(7*40)
fEQUW buffer+(8*40)
pEQUW buffer+(9*40)
zEQUW buffer+(10*40)
�EQUW buffer+(11*40)
�EQUW buffer+(12*40)
�EQUW buffer+(13*40)
�EQUW buffer+(14*40)
�EQUW buffer+(15*40)
�EQUW buffer+(16*40)
�EQUW buffer+(17*40)
�EQUW buffer+(18*40)
�EQUW buffer+(19*40)
�EQUW buffer+(20*40)
�EQUW buffer+(21*40)
�EQUW buffer+(22*40)
�EQUW buffer+(23*40)
EQUW buffer+(24*40)
.blanks
EQUS �40," ")
$]
.�
8�
�
00000000  0d 00 0a 0e f4 3e 20 4b  45 59 57 4f 52 44 0d 00  |.....> KEYWORD..|
00000010  14 06 eb 37 0d 00 1e 2c  de 20 6d 63 6f 64 65 20  |...7...,. mcode |
00000020  26 31 30 30 30 20 3a f4  3a 20 73 70 61 63 65 20  |&1000 :.: space |
00000030  66 6f 72 20 6d 61 63 68  69 6e 65 20 63 6f 64 65  |for machine code|
00000040  0d 00 28 29 de 20 62 75  66 66 65 72 20 26 34 30  |..(). buffer &40|
00000050  30 20 3a f4 3a 20 70 61  67 65 20 67 72 61 62 62  |0 :.: page grabb|
00000060  65 72 20 62 75 66 66 65  72 0d 00 32 24 de 20 6d  |er buffer..2$. m|
00000070  61 72 6b 65 72 73 20 26  32 30 20 3a f4 3a 20 70  |arkers &20 :.: p|
00000080  61 63 6b 65 74 20 6d 61  72 6b 65 72 73 0d 00 3c  |acket markers..<|
00000090  29 24 62 75 66 66 65 72  3d c4 34 30 2c 22 20 22  |)$buffer=.40," "|
000000a0  29 20 3a f4 3a 20 63 6c  65 61 72 20 74 68 65 20  |) :.: clear the |
000000b0  68 65 61 64 65 72 0d 00  46 24 f2 6d 63 6f 64 65  |header..F$.mcode|
000000c0  20 3a f4 3a 20 61 73 73  65 6d 62 6c 65 20 6d 61  | :.: assemble ma|
000000d0  63 68 69 6e 65 20 63 6f  64 65 0d 00 50 21 e8 22  |chine code..P!."|
000000e0  54 56 20 63 68 61 6e 6e  65 6c 20 28 31 2d 34 29  |TV channel (1-4)|
000000f0  20 3d 20 22 61 6e 73 77  65 72 24 0d 00 5a 24 63  | = "answer$..Z$c|
00000100  68 61 6e 6e 65 6c 3f 30  3d a0 28 22 26 22 2b c0  |hannel?0=.("&"+.|
00000110  61 6e 73 77 65 72 24 2c  31 29 29 2b 26 31 42 0d  |answer$,1))+&1B.|
00000120  00 64 27 e7 20 63 68 61  6e 6e 65 6c 3f 30 20 3c  |.d'. channel?0 <|
00000130  20 26 31 43 20 8c 20 63  68 61 6e 6e 65 6c 3f 30  | &1C . channel?0|
00000140  20 3d 20 26 31 43 0d 00  6e 27 e7 20 63 68 61 6e  | = &1C..n'. chan|
00000150  6e 65 6c 3f 30 20 3e 20  26 31 46 20 8c 20 63 68  |nel?0 > &1F . ch|
00000160  61 6e 6e 65 6c 3f 30 20  3d 20 26 31 46 0d 00 78  |annel?0 = &1F..x|
00000170  2c e8 22 53 65 61 72 63  68 20 6b 65 79 77 6f 72  |,."Search keywor|
00000180  64 20 28 55 50 50 45 52  20 43 41 53 45 29 20 3d  |d (UPPER CASE) =|
00000190  20 22 61 6e 73 77 65 72  24 0d 00 82 17 61 6e 73  | "answer$....ans|
000001a0  77 65 72 24 3d c0 61 6e  73 77 65 72 24 2c 38 29  |wer$=.answer$,8)|
000001b0  0d 00 8c 14 6c 65 6e 3d  a9 28 61 6e 73 77 65 72  |....len=.(answer|
000001c0  24 29 2d 31 0d 00 96 12  e3 20 70 61 73 73 3d 30  |$)-1..... pass=0|
000001d0  20 b8 20 6c 65 6e 0d 00  a0 33 73 65 61 72 63 68  | . len...3search|
000001e0  74 65 78 74 3f 70 61 73  73 20 3d 20 28 97 28 c1  |text?pass = (.(.|
000001f0  61 6e 73 77 65 72 24 2c  70 61 73 73 2b 31 2c 31  |answer$,pass+1,1|
00000200  29 29 20 84 20 26 38 30  29 0d 00 aa 05 ed 0d 00  |)) . &80).......|
00000210  b4 18 73 65 61 72 63 68  74 65 78 74 3f 28 6c 65  |..searchtext?(le|
00000220  6e 2b 31 29 3d 30 0d 00  be 14 77 6f 72 64 6c 65  |n+1)=0....wordle|
00000230  6e 67 74 68 3f 30 3d 6c  65 6e 0d 00 c8 15 ef 31  |ngth?0=len.....1|
00000240  32 2c 32 33 2c 31 2c 30  3b 30 3b 30 3b 30 3b 0d  |2,23,1,0;0;0;0;.|
00000250  00 d2 0b d6 20 6d 63 6f  64 65 0d 00 dc 15 ef 33  |.... mcode.....3|
00000260  30 2c 32 33 2c 31 2c 31  3b 30 3b 30 3b 30 3b 0d  |0,23,1,1;0;0;0;.|
00000270  00 e6 05 e0 0d 00 f0 0b  dd f2 6d 63 6f 64 65 0d  |..........mcode.|
00000280  00 fa 2f 70 61 63 6b 65  74 3d 26 37 30 20 3a f4  |../packet=&70 :.|
00000290  3a 20 72 6f 77 20 6e 75  6d 62 65 72 20 6f 66 20  |: row number of |
000002a0  63 75 72 72 65 6e 74 20  70 61 63 6b 65 74 0d 01  |current packet..|
000002b0  04 34 6d 61 67 61 7a 69  6e 65 3d 26 37 31 20 3a  |.4magazine=&71 :|
000002c0  f4 3a 20 6d 61 67 61 7a  69 6e 65 20 6e 75 6d 62  |.: magazine numb|
000002d0  65 72 20 6f 66 20 63 75  72 72 65 6e 74 20 70 61  |er of current pa|
000002e0  67 65 0d 01 0e 4c 67 72  61 62 66 6c 61 67 3d 26  |ge...Lgrabflag=&|
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00000300  6e 67 2c 20 26 34 30 3d  6c 6f 61 64 69 6e 67 2c  |ng, &40=loading,|
00000310  20 26 38 30 3d 66 6f 75  6e 64 2c 20 26 43 30 3d  | &80=found, &C0=|
00000320  6c 6f 61 64 65 64 20 26  20 66 6f 75 6e 64 0d 01  |loaded & found..|
00000330  18 28 75 73 65 72 6d 61  67 3d 26 37 33 20 3a f4  |.(usermag=&73 :.|
00000340  3a 20 6c 61 73 74 20 6d  61 67 61 7a 69 6e 65 20  |: last magazine |
00000350  6e 75 6d 62 65 72 0d 01  22 3b 75 73 65 72 70 61  |number..";userpa|
00000360  67 65 3d 26 37 34 20 3a  f4 3a 20 6c 61 73 74 20  |ge=&74 :.: last |
00000370  70 61 67 65 20 6e 75 6d  62 65 72 2c 20 6c 6f 77  |page number, low|
00000380  20 62 79 74 65 20 2b 20  68 69 67 68 20 62 79 74  | byte + high byt|
00000390  65 0d 01 2c 1e 63 68 61  6e 6e 65 6c 3d 26 37 36  |e..,.channel=&76|
000003a0  20 3a f4 3a 20 54 56 20  63 68 61 6e 6e 65 6c 0d  | :.: TV channel.|
000003b0  01 36 26 77 6f 72 6b 73  70 61 63 65 3d 26 37 37  |.6&workspace=&77|
000003c0  20 3a f4 3a 20 32 20 62  79 74 65 20 77 6f 72 6b  | :.: 2 byte work|
000003d0  73 70 61 63 65 0d 01 40  30 64 65 73 74 69 6e 61  |space..@0destina|
000003e0  74 69 6f 6e 3d 26 37 39  20 3a f4 3a 20 61 6e 6f  |tion=&79 :.: ano|
000003f0  74 68 65 72 20 32 20 62  79 74 65 20 77 6f 72 6b  |ther 2 byte work|
00000400  73 70 61 63 65 0d 01 4a  28 77 6f 72 64 6c 65 6e  |space..J(wordlen|
00000410  67 74 68 3d 26 37 42 20  3a f4 3a 20 6c 65 6e 67  |gth=&7B :.: leng|
00000420  74 68 20 6f 66 20 6b 65  79 77 6f 72 64 0d 01 54  |th of keyword..T|
00000430  30 74 65 6d 70 79 3d 26  37 43 20 3a f4 3a 20 74  |0tempy=&7C :.: t|
00000440  65 6d 70 6f 72 61 72 79  20 73 74 6f 72 65 20 66  |emporary store f|
00000450  6f 72 20 59 20 72 65 67  69 73 74 65 72 0d 01 5e  |or Y register..^|
00000460  44 73 65 61 72 63 68 66  6f 72 3d 26 37 44 20 3a  |Dsearchfor=&7D :|
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00000480  72 65 20 66 6f 72 20 63  68 61 72 61 63 74 65 72  |re for character|
00000490  20 69 6e 20 73 65 61 72  63 68 20 73 74 72 69 6e  | in search strin|
000004a0  67 0d 01 68 28 73 65 61  72 63 68 74 65 78 74 3d  |g..h(searchtext=|
000004b0  26 38 30 20 3a f4 3a 20  73 74 6f 72 65 20 66 6f  |&80 :.: store fo|
000004c0  72 20 6b 65 79 77 6f 72  64 0d 01 72 1e 69 72 71  |r keyword..r.irq|
000004d0  32 76 3d 26 32 30 36 20  3a f4 3a 20 69 72 71 32  |2v=&206 :.: irq2|
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000004f0  6e 74 72 6f 6c 3d 26 46  43 31 30 20 3a f4 3a 20  |ntrol=&FC10 :.: |
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00000510  73 74 65 72 2c 20 77 72  69 74 65 20 6f 6e 6c 79  |ster, write only|
00000520  0d 01 86 36 74 74 78 73  74 61 74 75 73 3d 26 46  |...6ttxstatus=&F|
00000530  43 31 30 20 3a f4 3a 20  54 54 58 20 73 74 61 74  |C10 :.: TTX stat|
00000540  75 73 20 72 65 67 69 73  74 65 72 2c 20 72 65 61  |us register, rea|
00000550  64 20 6f 6e 6c 79 0d 01  90 31 72 6f 77 72 65 67  |d only...1rowreg|
00000560  3d 26 46 43 31 31 20 3a  f4 3a 20 54 54 58 20 72  |=&FC11 :.: TTX r|
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00000580  74 65 20 6f 6e 6c 79 0d  01 9a 35 64 61 74 61 72  |te only...5datar|
00000590  65 67 3d 26 46 43 31 32  20 3a f4 3a 20 54 54 58  |eg=&FC12 :.: TTX|
000005a0  20 64 61 74 61 20 72 65  67 69 73 74 65 72 2c 20  | data register, |
000005b0  72 65 61 64 20 26 20 77  72 69 74 65 0d 01 a4 3d  |read & write...=|
000005c0  73 74 61 74 63 6c 72 3d  26 46 43 31 33 20 3a f4  |statclr=&FC13 :.|
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000005e0  75 73 20 72 65 67 69 73  74 65 72 2c 20 72 65 61  |us register, rea|
000005f0  64 20 26 20 77 72 69 74  65 0d 01 ae 10 6f 73 77  |d & write....osw|
00000600  72 63 68 3d 26 46 46 45  45 0d 01 b8 10 6f 73 62  |rch=&FFEE....osb|
00000610  79 74 65 3d 26 46 46 46  34 0d 01 c2 14 e3 20 70  |yte=&FFF4..... p|
00000620  61 73 73 3d 30 20 b8 20  32 20 88 20 32 0d 01 cc  |ass=0 . 2 . 2...|
00000630  0c 50 25 3d 6d 63 6f 64  65 0d 01 d6 0d 5b 4f 50  |.P%=mcode....[OP|
00000640  54 20 70 61 73 73 0d 01  e0 28 4a 53 52 20 63 6c  |T pass...(JSR cl|
00000650  65 61 72 6d 61 72 6b 20  5c 20 73 65 74 20 75 70  |earmark \ set up|
00000660  20 66 6f 72 20 73 65 61  72 63 68 69 6e 67 0d 01  | for searching..|
00000670  ea 2f 4c 44 58 20 69 72  71 32 76 20 5c 20 6c 6f  |./LDX irq2v \ lo|
00000680  61 64 20 73 65 63 6f 6e  64 61 72 79 20 69 6e 74  |ad secondary int|
00000690  65 72 72 75 70 74 20 76  65 63 74 6f 72 0d 01 f4  |errupt vector...|
000006a0  0f 4c 44 59 20 69 72 71  32 76 2b 31 0d 01 fe 32  |.LDY irq2v+1...2|
000006b0  53 54 58 20 6f 6c 64 69  72 71 32 76 20 5c 20 73  |STX oldirq2v \ s|
000006c0  61 76 65 20 73 65 63 6f  6e 64 61 72 79 20 69 6e  |ave secondary in|
000006d0  74 65 72 72 75 70 74 20  76 65 63 74 6f 72 0d 02  |terrupt vector..|
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000006f0  0d 02 12 38 4c 44 58 20  23 69 6e 74 65 72 72 75  |...8LDX #interru|
00000700  70 74 20 83 20 32 35 36  20 5c 20 69 6e 73 74 61  |pt . 256 \ insta|
00000710  6c 6c 20 6e 65 77 20 69  6e 74 65 72 72 75 70 74  |ll new interrupt|
00000720  20 72 6f 75 74 69 6e 65  0d 02 1c 18 4c 44 59 20  | routine....LDY |
00000730  23 69 6e 74 65 72 72 75  70 74 20 81 20 32 35 36  |#interrupt . 256|
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000007a0  65 20 69 6e 74 65 72 72  75 70 74 73 0d 02 4e 2e  |e interrupts..N.|
000007b0  4c 44 41 20 63 68 61 6e  6e 65 6c 20 5c 20 6c 6f  |LDA channel \ lo|
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000007e0  41 20 74 74 78 63 6f 6e  74 72 6f 6c 20 5c 20 65  |A ttxcontrol \ e|
000007f0  6e 61 62 6c 65 20 54 54  58 0d 02 62 0d 2e 6d 61  |nable TTX..b..ma|
00000800  69 6e 6c 6f 6f 70 0d 02  6c 2e 4c 44 41 20 67 72  |inloop..l.LDA gr|
00000810  61 62 66 6c 61 67 20 5c  20 74 65 73 74 20 74 6f  |abflag \ test to|
00000820  20 73 65 65 20 69 66 20  70 61 67 65 20 67 72 61  | see if page gra|
00000830  62 62 65 64 0d 02 76 34  43 4d 50 20 23 26 43 30  |bbed..v4CMP #&C0|
00000840  20 5c 20 26 43 30 20 3d  20 70 61 67 65 20 67 72  | \ &C0 = page gr|
00000850  61 62 62 65 64 20 61 6e  64 20 72 65 61 64 79 20  |abbed and ready |
00000860  74 6f 20 70 72 69 6e 74  0d 02 80 26 42 4e 45 20  |to print...&BNE |
00000870  63 6f 6e 74 69 6e 75 65  20 5c 20 62 72 61 6e 63  |continue \ branc|
00000880  68 20 69 66 20 6e 6f 74  20 72 65 61 64 79 0d 02  |h if not ready..|
00000890  8a 32 4a 53 52 20 63 68  65 63 6b 64 6f 75 62 6c  |.2JSR checkdoubl|
000008a0  65 20 5c 20 6c 6f 6f 6b  20 66 6f 72 20 64 6f 75  |e \ look for dou|
000008b0  62 6c 65 20 68 65 69 67  68 74 20 6c 69 6e 65 73  |ble height lines|
000008c0  0d 02 94 2a 4a 53 52 20  74 72 61 6e 73 66 65 72  |...*JSR transfer|
000008d0  20 5c 20 74 72 61 6e 73  66 65 72 20 64 61 74 61  | \ transfer data|
000008e0  20 74 6f 20 73 63 72 65  65 6e 0d 02 9e 29 4a 53  | to screen...)JS|
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00003230
01-04-89/KEYWORD.m0
01-04-89/KEYWORD.m1
01-04-89/KEYWORD.m2
01-04-89/KEYWORD.m4
01-04-89/KEYWORD.m5