Home » Personal collection » Acorn tapes » Electron_User » Electron_User_tape21a_acorn_eu_1991_april.wav » BRKHdlr

BRKHdlr

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 tapes » Electron_User » Electron_User_tape21a_acorn_eu_1991_april.wav
Filename: BRKHdlr
Read OK:
File size: 09F0 bytes
Load address: FFFF1A00
Exec address: FFFF8023
Duplicates

There are 3 duplicate copies of this file in the archive:

File contents
   10REM BRK Handler
   20REM Stephen Ramplin
   30REM (c) The Micro User
   40ONERROR MODE7:REPORT:PRINT" at line ";ERL:END
   50MODE135
   60*FX200
   70*KEY10 OLD|MRUN|M
   80brkv=&202:oldbrk=!brkv AND&FFFF
   90osbyte=&FFF4:osasci=&FFE3:osnewl=&FFE7:osrdch=&FFE0:pointer=&A8
  100brkhandler=&913:IFbrkhandler=oldbrk CALL!-4 ELSE*FX18
  110PROCassemble
  120PRINT"Press Return to save the machine code":REPEATUNTILGET=13
  130$&700="SAVE BRKcode 900 "+STR$~P%
  140X%=0:Y%=7:CALL&FFF7
  150PRINT''"DEMONSTRATION:"
  160CALLinit:PROCset:X%=2:Y%=&FF:A%=1:CALLtest:END
  170DEFPROCassemble:FORpass%=0TO2STEP2:P%=&900:[OPTpass%
  180.init:LDX#brkhandler MOD256:LDY#brkhandler DIV256
  190SEI:STXbrkv:STYbrkv+1:CLI:RTS
  200.not:PLA:TAY:PLA:JMPoldbrk
  210.brkhandler:PHA:STA wkspc:TYA:PHA:LDY#0:LDA(&FD),Y:CMP#46
  220BCCnot:CMP#79:BCSnot:PLA:PHA:TAY:TXA:PHA:JSR osnewl:LDA#ASC"A"
  230JSR printreg:STX wkspc:LDA#ASC"X":JSR printreg:STY wkspc
  240LDA#ASC"Y":JSR printreg:JSRosnewl
  250JSR print:OPT FNs("Status (NV-BDIZC):"):BRK:TSX:LDA&104,X
  260PHA:JSR binary:JSR space:LDA#ASC"(":JSR osasci:JSR ampersand
  270PLA:JSR hexprint:LDA#ASC")"
  280JSRosasci:LDY#0:LDA(&FD),Y:SEC:SBC#46:BEQ nodump:CMP#33:BCCfine:LDA#32
  290.fine:STA number:JSR osnewl:LDY#0:JSRosnewl:.dumploop
  300JSRampersand:LDA &8C1,Y:STA pointer+1:JSR hexprint:LDA &8C0,Y
  310STA pointer:JSR hexprint:LDA#ASC"=":JSR osasci:JSR ampersand
  320STYtemp:LDY#0:LDA(pointer),Y:JSR hexprint:LDY temp:JSR space
  330INY:INY:DEC number:BNE dumploop:.nodump:JSR osnewl:JSR print
  340OPT FNs("(Q)uit or (R)eturn?"):BRK:JSR osnewl:PLA:TAX:PLA:TAY
  350.getchr:JSR osrdch:BCS quit:AND#&DF:CMP#ASC"Q":BEQ quit:CMP#ASC"R"
  360BNE getchr:PLA:RTI:.quit:LDA#quiterr MOD256:STA&FD
  370LDA#quiterr DIV256:STA&FE:PLA
  380JMPoldbrk:.quiterr:OPT FNb(0):OPT FNs("Quit"):BRK
  390.hexprint:PHA:LSRA:LSRA:LSRA:LSRA:JSRnibble:PLA
  400.nibble:AND#&0F:SED:CLC:ADC#&90:ADC#&40:CLD:JMP osasci
  410.print:PLA:STA pointer:PLA:STA pointer+1:LDY#0
  420.ploop INC pointer:BNE nocarry:INC pointer+1
  430.nocarry:LDA (pointer),Y:BEQ done:JSR osasci
  440JMP ploop:.done:LDA pointer+1:PHA:LDA pointer:PHA:RTS
  450.printreg:JSR osasci:LDA#ASC":":JSR osasci:JSR ampersand
  460LDA wkspc:JSR hexprint:JSR space:.space:LDA#ASC" "
  470BNE output:.ampersand:LDA#ASC"&":.output:JMP osasci
  480.binary:STA wkspc:LDX#8
  490.bit:ASL wkspc:LDA#ASC"0":ADC#0:JSR osasci:DEX:BNE bit:RTS
  500.wkspc OPT FNb(0):.number OPT FNb(0):.left OPT FNb(0):.right OPT FNb(0):.temp OPT FNb(0)
  510.test:DEX:STXtestspc:BRK:OPT FNb(46+32):BPLtest:RTS
  520.testspc OPT FNb(0):]
  530NEXTpass%:ENDPROC
  540DEFFNb(byte%):?P%=byte%:P%=P%+1:=pass%
  550DEFFNs(string$):$P%=string$:P%=P%+LENstring$:=pass%
  560DEFPROCset:FORN%=&900TO&91F:?(&8C0+(N%-&900)*2)=N% MOD256:?(&8C1+(N%-&900)*2)=N% DIV256:NEXT:ENDPROC

� BRK Handler
� Stephen Ramplin
� (c) The Micro User
(� �7:�:�" at line ";�:�
2�135
<
*FX200
F*KEY10 OLD|MRUN|M
P!brkv=&202:oldbrk=!brkv �&FFFF
ZCosbyte=&FFF4:osasci=&FFE3:osnewl=&FFE7:osrdch=&FFE0:pointer=&A8
d2brkhandler=&913:�brkhandler=oldbrk �!-4 �*FX18
n
�assemble
x3�"Press Return to save the machine code":���=13
�"$&700="SAVE BRKcode 900 "+�~P%
�X%=0:Y%=7:�&FFF7
��''"DEMONSTRATION:"
�'�init:�set:X%=2:Y%=&FF:A%=1:�test:�
�-��assemble:�pass%=0�2�2:P%=&900:[OPTpass%
�1.init:LDX#brkhandler �256:LDY#brkhandler �256
�!SEI:STXbrkv:STYbrkv+1:CLI:RTS
�.not:PLA:TAY:PLA:JMPoldbrk
�=.brkhandler:PHA:STA wkspc:TYA:PHA:LDY#0:LDA(&FD),Y:CMP#46
�@BCCnot:CMP#79:BCSnot:PLA:PHA:TAY:TXA:PHA:JSR osnewl:LDA#�"A"
�:JSR printreg:STX wkspc:LDA#�"X":JSR printreg:STY wkspc
�#LDA#�"Y":JSR printreg:JSRosnewl
�<JSR print:OPT �s("Status (NV-BDIZC):"):BRK:TSX:LDA&104,X
>PHA:JSR binary:JSR space:LDA#�"(":JSR osasci:JSR ampersand
PLA:JSR hexprint:LDA#�")"
JJSRosasci:LDY#0:LDA(&FD),Y:SEC:SBC#46:BEQ nodump:CMP#33:BCCfine:LDA#32
"9.fine:STA number:JSR osnewl:LDY#0:JSRosnewl:.dumploop
,AJSRampersand:LDA &8C1,Y:STA pointer+1:JSR hexprint:LDA &8C0,Y
6>STA pointer:JSR hexprint:LDA#�"=":JSR osasci:JSR ampersand
@@STYtemp:LDY#0:LDA(pointer),Y:JSR hexprint:LDY temp:JSR space
J@INY:INY:DEC number:BNE dumploop:.nodump:JSR osnewl:JSR print
T@OPT �s("(Q)uit or (R)eturn?"):BRK:JSR osnewl:PLA:TAX:PLA:TAY
^@.getchr:JSR osrdch:BCS quit:�#&DF:CMP#�"Q":BEQ quit:CMP#�"R"
h4BNE getchr:PLA:RTI:.quit:LDA#quiterr �256:STA&FD
rLDA#quiterr �256:STA&FE:PLA
|3JMPoldbrk:.quiterr:OPT �b(0):OPT �s("Quit"):BRK
�3.hexprint:PHA:LSRA:LSRA:LSRA:LSRA:JSRnibble:PLA
�8.nibble:�#&0F:SED:CLC:ADC#&90:ADC#&40:CLD:JMP osasci
�2.print:PLA:STA pointer:PLA:STA pointer+1:LDY#0
�0.ploop INC pointer:BNE nocarry:INC pointer+1
�0.nocarry:LDA (pointer),Y:BEQ done:JSR osasci
�9JMP ploop:.done:LDA pointer+1:PHA:LDA pointer:PHA:RTS
�:.printreg:JSR osasci:LDA#�":":JSR osasci:JSR ampersand
�4LDA wkspc:JSR hexprint:JSR space:.space:LDA#�" "
�5BNE output:.ampersand:LDA#�"&":.output:JMP osasci
�.binary:STA wkspc:LDX#8
�<.bit:ASL wkspc:LDA#�"0":ADC#0:JSR osasci:DEX:BNE bit:RTS
�W.wkspc OPT �b(0):.number OPT �b(0):.left OPT �b(0):.right OPT �b(0):.temp OPT �b(0)
�6.test:DEX:STXtestspc:BRK:OPT �b(46+32):BPLtest:RTS
.testspc OPT �b(0):]
�pass%:�
'ݤb(byte%):?P%=byte%:P%=P%+1:=pass%
&2ݤs(string$):$P%=string$:P%=P%+�string$:=pass%
0S��set:�N%=&900�&91F:?(&8C0+(N%-&900)*2)=N% �256:?(&8C1+(N%-&900)*2)=N% �256:�:�
�
00000000  0d 00 0a 11 f4 20 42 52  4b 20 48 61 6e 64 6c 65  |..... BRK Handle|
00000010  72 0d 00 14 15 f4 20 53  74 65 70 68 65 6e 20 52  |r..... Stephen R|
00000020  61 6d 70 6c 69 6e 0d 00  1e 18 f4 20 28 63 29 20  |amplin..... (c) |
00000030  54 68 65 20 4d 69 63 72  6f 20 55 73 65 72 0d 00  |The Micro User..|
00000040  28 1c ee 85 20 eb 37 3a  f6 3a f1 22 20 61 74 20  |(... .7:.:." at |
00000050  6c 69 6e 65 20 22 3b 9e  3a e0 0d 00 32 08 eb 31  |line ";.:...2..1|
00000060  33 35 0d 00 3c 0a 2a 46  58 32 30 30 0d 00 46 15  |35..<.*FX200..F.|
00000070  2a 4b 45 59 31 30 20 4f  4c 44 7c 4d 52 55 4e 7c  |*KEY10 OLD|MRUN||
00000080  4d 0d 00 50 21 62 72 6b  76 3d 26 32 30 32 3a 6f  |M..P!brkv=&202:o|
00000090  6c 64 62 72 6b 3d 21 62  72 6b 76 20 80 26 46 46  |ldbrk=!brkv .&FF|
000000a0  46 46 0d 00 5a 43 6f 73  62 79 74 65 3d 26 46 46  |FF..ZCosbyte=&FF|
000000b0  46 34 3a 6f 73 61 73 63  69 3d 26 46 46 45 33 3a  |F4:osasci=&FFE3:|
000000c0  6f 73 6e 65 77 6c 3d 26  46 46 45 37 3a 6f 73 72  |osnewl=&FFE7:osr|
000000d0  64 63 68 3d 26 46 46 45  30 3a 70 6f 69 6e 74 65  |dch=&FFE0:pointe|
000000e0  72 3d 26 41 38 0d 00 64  32 62 72 6b 68 61 6e 64  |r=&A8..d2brkhand|
000000f0  6c 65 72 3d 26 39 31 33  3a e7 62 72 6b 68 61 6e  |ler=&913:.brkhan|
00000100  64 6c 65 72 3d 6f 6c 64  62 72 6b 20 d6 21 2d 34  |dler=oldbrk .!-4|
00000110  20 8b 2a 46 58 31 38 0d  00 6e 0d f2 61 73 73 65  | .*FX18..n..asse|
00000120  6d 62 6c 65 0d 00 78 33  f1 22 50 72 65 73 73 20  |mble..x3."Press |
00000130  52 65 74 75 72 6e 20 74  6f 20 73 61 76 65 20 74  |Return to save t|
00000140  68 65 20 6d 61 63 68 69  6e 65 20 63 6f 64 65 22  |he machine code"|
00000150  3a f5 fd a5 3d 31 33 0d  00 82 22 24 26 37 30 30  |:...=13..."$&700|
00000160  3d 22 53 41 56 45 20 42  52 4b 63 6f 64 65 20 39  |="SAVE BRKcode 9|
00000170  30 30 20 22 2b c3 7e 50  25 0d 00 8c 14 58 25 3d  |00 "+.~P%....X%=|
00000180  30 3a 59 25 3d 37 3a d6  26 46 46 46 37 0d 00 96  |0:Y%=7:.&FFF7...|
00000190  17 f1 27 27 22 44 45 4d  4f 4e 53 54 52 41 54 49  |..''"DEMONSTRATI|
000001a0  4f 4e 3a 22 0d 00 a0 27  d6 69 6e 69 74 3a f2 73  |ON:"...'.init:.s|
000001b0  65 74 3a 58 25 3d 32 3a  59 25 3d 26 46 46 3a 41  |et:X%=2:Y%=&FF:A|
000001c0  25 3d 31 3a d6 74 65 73  74 3a e0 0d 00 aa 2d dd  |%=1:.test:....-.|
000001d0  f2 61 73 73 65 6d 62 6c  65 3a e3 70 61 73 73 25  |.assemble:.pass%|
000001e0  3d 30 b8 32 88 32 3a 50  25 3d 26 39 30 30 3a 5b  |=0.2.2:P%=&900:[|
000001f0  4f 50 54 70 61 73 73 25  0d 00 b4 31 2e 69 6e 69  |OPTpass%...1.ini|
00000200  74 3a 4c 44 58 23 62 72  6b 68 61 6e 64 6c 65 72  |t:LDX#brkhandler|
00000210  20 83 32 35 36 3a 4c 44  59 23 62 72 6b 68 61 6e  | .256:LDY#brkhan|
00000220  64 6c 65 72 20 81 32 35  36 0d 00 be 21 53 45 49  |dler .256...!SEI|
00000230  3a 53 54 58 62 72 6b 76  3a 53 54 59 62 72 6b 76  |:STXbrkv:STYbrkv|
00000240  2b 31 3a 43 4c 49 3a 52  54 53 0d 00 c8 1e 2e 6e  |+1:CLI:RTS.....n|
00000250  6f 74 3a 50 4c 41 3a 54  41 59 3a 50 4c 41 3a 4a  |ot:PLA:TAY:PLA:J|
00000260  4d 50 6f 6c 64 62 72 6b  0d 00 d2 3d 2e 62 72 6b  |MPoldbrk...=.brk|
00000270  68 61 6e 64 6c 65 72 3a  50 48 41 3a 53 54 41 20  |handler:PHA:STA |
00000280  77 6b 73 70 63 3a 54 59  41 3a 50 48 41 3a 4c 44  |wkspc:TYA:PHA:LD|
00000290  59 23 30 3a 4c 44 41 28  26 46 44 29 2c 59 3a 43  |Y#0:LDA(&FD),Y:C|
000002a0  4d 50 23 34 36 0d 00 dc  40 42 43 43 6e 6f 74 3a  |MP#46...@BCCnot:|
000002b0  43 4d 50 23 37 39 3a 42  43 53 6e 6f 74 3a 50 4c  |CMP#79:BCSnot:PL|
000002c0  41 3a 50 48 41 3a 54 41  59 3a 54 58 41 3a 50 48  |A:PHA:TAY:TXA:PH|
000002d0  41 3a 4a 53 52 20 6f 73  6e 65 77 6c 3a 4c 44 41  |A:JSR osnewl:LDA|
000002e0  23 97 22 41 22 0d 00 e6  3a 4a 53 52 20 70 72 69  |#."A"...:JSR pri|
000002f0  6e 74 72 65 67 3a 53 54  58 20 77 6b 73 70 63 3a  |ntreg:STX wkspc:|
00000300  4c 44 41 23 97 22 58 22  3a 4a 53 52 20 70 72 69  |LDA#."X":JSR pri|
00000310  6e 74 72 65 67 3a 53 54  59 20 77 6b 73 70 63 0d  |ntreg:STY wkspc.|
00000320  00 f0 23 4c 44 41 23 97  22 59 22 3a 4a 53 52 20  |..#LDA#."Y":JSR |
00000330  70 72 69 6e 74 72 65 67  3a 4a 53 52 6f 73 6e 65  |printreg:JSRosne|
00000340  77 6c 0d 00 fa 3c 4a 53  52 20 70 72 69 6e 74 3a  |wl...<JSR print:|
00000350  4f 50 54 20 a4 73 28 22  53 74 61 74 75 73 20 28  |OPT .s("Status (|
00000360  4e 56 2d 42 44 49 5a 43  29 3a 22 29 3a 42 52 4b  |NV-BDIZC):"):BRK|
00000370  3a 54 53 58 3a 4c 44 41  26 31 30 34 2c 58 0d 01  |:TSX:LDA&104,X..|
00000380  04 3e 50 48 41 3a 4a 53  52 20 62 69 6e 61 72 79  |.>PHA:JSR binary|
00000390  3a 4a 53 52 20 73 70 61  63 65 3a 4c 44 41 23 97  |:JSR space:LDA#.|
000003a0  22 28 22 3a 4a 53 52 20  6f 73 61 73 63 69 3a 4a  |"(":JSR osasci:J|
000003b0  53 52 20 61 6d 70 65 72  73 61 6e 64 0d 01 0e 1d  |SR ampersand....|
000003c0  50 4c 41 3a 4a 53 52 20  68 65 78 70 72 69 6e 74  |PLA:JSR hexprint|
000003d0  3a 4c 44 41 23 97 22 29  22 0d 01 18 4a 4a 53 52  |:LDA#.")"...JJSR|
000003e0  6f 73 61 73 63 69 3a 4c  44 59 23 30 3a 4c 44 41  |osasci:LDY#0:LDA|
000003f0  28 26 46 44 29 2c 59 3a  53 45 43 3a 53 42 43 23  |(&FD),Y:SEC:SBC#|
00000400  34 36 3a 42 45 51 20 6e  6f 64 75 6d 70 3a 43 4d  |46:BEQ nodump:CM|
00000410  50 23 33 33 3a 42 43 43  66 69 6e 65 3a 4c 44 41  |P#33:BCCfine:LDA|
00000420  23 33 32 0d 01 22 39 2e  66 69 6e 65 3a 53 54 41  |#32.."9.fine:STA|
00000430  20 6e 75 6d 62 65 72 3a  4a 53 52 20 6f 73 6e 65  | number:JSR osne|
00000440  77 6c 3a 4c 44 59 23 30  3a 4a 53 52 6f 73 6e 65  |wl:LDY#0:JSRosne|
00000450  77 6c 3a 2e 64 75 6d 70  6c 6f 6f 70 0d 01 2c 41  |wl:.dumploop..,A|
00000460  4a 53 52 61 6d 70 65 72  73 61 6e 64 3a 4c 44 41  |JSRampersand:LDA|
00000470  20 26 38 43 31 2c 59 3a  53 54 41 20 70 6f 69 6e  | &8C1,Y:STA poin|
00000480  74 65 72 2b 31 3a 4a 53  52 20 68 65 78 70 72 69  |ter+1:JSR hexpri|
00000490  6e 74 3a 4c 44 41 20 26  38 43 30 2c 59 0d 01 36  |nt:LDA &8C0,Y..6|
000004a0  3e 53 54 41 20 70 6f 69  6e 74 65 72 3a 4a 53 52  |>STA pointer:JSR|
000004b0  20 68 65 78 70 72 69 6e  74 3a 4c 44 41 23 97 22  | hexprint:LDA#."|
000004c0  3d 22 3a 4a 53 52 20 6f  73 61 73 63 69 3a 4a 53  |=":JSR osasci:JS|
000004d0  52 20 61 6d 70 65 72 73  61 6e 64 0d 01 40 40 53  |R ampersand..@@S|
000004e0  54 59 74 65 6d 70 3a 4c  44 59 23 30 3a 4c 44 41  |TYtemp:LDY#0:LDA|
000004f0  28 70 6f 69 6e 74 65 72  29 2c 59 3a 4a 53 52 20  |(pointer),Y:JSR |
00000500  68 65 78 70 72 69 6e 74  3a 4c 44 59 20 74 65 6d  |hexprint:LDY tem|
00000510  70 3a 4a 53 52 20 73 70  61 63 65 0d 01 4a 40 49  |p:JSR space..J@I|
00000520  4e 59 3a 49 4e 59 3a 44  45 43 20 6e 75 6d 62 65  |NY:INY:DEC numbe|
00000530  72 3a 42 4e 45 20 64 75  6d 70 6c 6f 6f 70 3a 2e  |r:BNE dumploop:.|
00000540  6e 6f 64 75 6d 70 3a 4a  53 52 20 6f 73 6e 65 77  |nodump:JSR osnew|
00000550  6c 3a 4a 53 52 20 70 72  69 6e 74 0d 01 54 40 4f  |l:JSR print..T@O|
00000560  50 54 20 a4 73 28 22 28  51 29 75 69 74 20 6f 72  |PT .s("(Q)uit or|
00000570  20 28 52 29 65 74 75 72  6e 3f 22 29 3a 42 52 4b  | (R)eturn?"):BRK|
00000580  3a 4a 53 52 20 6f 73 6e  65 77 6c 3a 50 4c 41 3a  |:JSR osnewl:PLA:|
00000590  54 41 58 3a 50 4c 41 3a  54 41 59 0d 01 5e 40 2e  |TAX:PLA:TAY..^@.|
000005a0  67 65 74 63 68 72 3a 4a  53 52 20 6f 73 72 64 63  |getchr:JSR osrdc|
000005b0  68 3a 42 43 53 20 71 75  69 74 3a 80 23 26 44 46  |h:BCS quit:.#&DF|
000005c0  3a 43 4d 50 23 97 22 51  22 3a 42 45 51 20 71 75  |:CMP#."Q":BEQ qu|
000005d0  69 74 3a 43 4d 50 23 97  22 52 22 0d 01 68 34 42  |it:CMP#."R"..h4B|
000005e0  4e 45 20 67 65 74 63 68  72 3a 50 4c 41 3a 52 54  |NE getchr:PLA:RT|
000005f0  49 3a 2e 71 75 69 74 3a  4c 44 41 23 71 75 69 74  |I:.quit:LDA#quit|
00000600  65 72 72 20 83 32 35 36  3a 53 54 41 26 46 44 0d  |err .256:STA&FD.|
00000610  01 72 1f 4c 44 41 23 71  75 69 74 65 72 72 20 81  |.r.LDA#quiterr .|
00000620  32 35 36 3a 53 54 41 26  46 45 3a 50 4c 41 0d 01  |256:STA&FE:PLA..|
00000630  7c 33 4a 4d 50 6f 6c 64  62 72 6b 3a 2e 71 75 69  ||3JMPoldbrk:.qui|
00000640  74 65 72 72 3a 4f 50 54  20 a4 62 28 30 29 3a 4f  |terr:OPT .b(0):O|
00000650  50 54 20 a4 73 28 22 51  75 69 74 22 29 3a 42 52  |PT .s("Quit"):BR|
00000660  4b 0d 01 86 33 2e 68 65  78 70 72 69 6e 74 3a 50  |K...3.hexprint:P|
00000670  48 41 3a 4c 53 52 41 3a  4c 53 52 41 3a 4c 53 52  |HA:LSRA:LSRA:LSR|
00000680  41 3a 4c 53 52 41 3a 4a  53 52 6e 69 62 62 6c 65  |A:LSRA:JSRnibble|
00000690  3a 50 4c 41 0d 01 90 38  2e 6e 69 62 62 6c 65 3a  |:PLA...8.nibble:|
000006a0  80 23 26 30 46 3a 53 45  44 3a 43 4c 43 3a 41 44  |.#&0F:SED:CLC:AD|
000006b0  43 23 26 39 30 3a 41 44  43 23 26 34 30 3a 43 4c  |C#&90:ADC#&40:CL|
000006c0  44 3a 4a 4d 50 20 6f 73  61 73 63 69 0d 01 9a 32  |D:JMP osasci...2|
000006d0  2e 70 72 69 6e 74 3a 50  4c 41 3a 53 54 41 20 70  |.print:PLA:STA p|
000006e0  6f 69 6e 74 65 72 3a 50  4c 41 3a 53 54 41 20 70  |ointer:PLA:STA p|
000006f0  6f 69 6e 74 65 72 2b 31  3a 4c 44 59 23 30 0d 01  |ointer+1:LDY#0..|
00000700  a4 30 2e 70 6c 6f 6f 70  20 49 4e 43 20 70 6f 69  |.0.ploop INC poi|
00000710  6e 74 65 72 3a 42 4e 45  20 6e 6f 63 61 72 72 79  |nter:BNE nocarry|
00000720  3a 49 4e 43 20 70 6f 69  6e 74 65 72 2b 31 0d 01  |:INC pointer+1..|
00000730  ae 30 2e 6e 6f 63 61 72  72 79 3a 4c 44 41 20 28  |.0.nocarry:LDA (|
00000740  70 6f 69 6e 74 65 72 29  2c 59 3a 42 45 51 20 64  |pointer),Y:BEQ d|
00000750  6f 6e 65 3a 4a 53 52 20  6f 73 61 73 63 69 0d 01  |one:JSR osasci..|
00000760  b8 39 4a 4d 50 20 70 6c  6f 6f 70 3a 2e 64 6f 6e  |.9JMP ploop:.don|
00000770  65 3a 4c 44 41 20 70 6f  69 6e 74 65 72 2b 31 3a  |e:LDA pointer+1:|
00000780  50 48 41 3a 4c 44 41 20  70 6f 69 6e 74 65 72 3a  |PHA:LDA pointer:|
00000790  50 48 41 3a 52 54 53 0d  01 c2 3a 2e 70 72 69 6e  |PHA:RTS...:.prin|
000007a0  74 72 65 67 3a 4a 53 52  20 6f 73 61 73 63 69 3a  |treg:JSR osasci:|
000007b0  4c 44 41 23 97 22 3a 22  3a 4a 53 52 20 6f 73 61  |LDA#.":":JSR osa|
000007c0  73 63 69 3a 4a 53 52 20  61 6d 70 65 72 73 61 6e  |sci:JSR ampersan|
000007d0  64 0d 01 cc 34 4c 44 41  20 77 6b 73 70 63 3a 4a  |d...4LDA wkspc:J|
000007e0  53 52 20 68 65 78 70 72  69 6e 74 3a 4a 53 52 20  |SR hexprint:JSR |
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00000800  23 97 22 20 22 0d 01 d6  35 42 4e 45 20 6f 75 74  |#." "...5BNE out|
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