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; ; Commodore 64 ROM Memory Map ; ; ; Data types in headers (for reassembler): ; ; DATA Misc data ; TEXT String terminated with 00 ; WORD Vectors in LO/HI byte pairs ; CHIP I/O Area ; EMPTY ROM containing FF's ; ; ; BASIC interpreter ROM ($A000 - $BFFF) ; a000 40960 - Restart Vectors WORD a00c 40972 stmdsp BASIC Command Vectors WORD a052 41042 fundsp BASIC Function Vectors WORD a080 41088 optab BASIC Operator Vectors WORD a09e 41118 reslst BASIC Command Keyword Table DATA a129 41257 msclst BASIC Misc. Keyword Table DATA a140 41280 oplist BASIC Operator Keyword Table DATA a14d 41293 funlst BASIC Function Keyword Table DATA a19e 41374 errtab Error Message Table DATA a328 41768 errptr Error Message Pointers WORD a364 41828 okk Misc. Messages TEXT a38a 41866 fndfor Find FOR/GOSUB Entry on Stack a3b8 41912 bltu Open Space in Memory a3fb 41979 getstk Check Stack Depth a408 41992 reason Check Memory Overlap a435 42037 omerr Output ?OUT OF MEMORY Error a437 42039 error Error Routine a469 42089 errfin Break Entry a474 42100 ready Restart BASIC a480 42112 main Input & Identify BASIC Line a49c 42140 main1 Get Line Number & Tokenise Text a4a2 42146 inslin Insert BASIC Text a533 42291 linkprg Rechain Lines a560 42336 inlin Input Line Into Buffer a579 42361 crunch Tokenise Input Buffer a613 42515 fndlin Search for Line Number a642 42562 scrtch Perform [new] a65e 42590 clear Perform [clr] a68e 42638 stxpt Reset TXTPTR a69c 42652 list Perform [list] a717 42775 qplop Handle LIST Character a742 42818 for Perform [for] a7ae 42926 newstt BASIC Warm Start a7c4 42948 ckeol Check End of Program a7e1 42977 gone Prepare to execute statement a7ed 42989 gone3 Perform BASIC Keyword a81d 43037 restor Perform [restore] a82c 43052 stop Perform [stop], [end], break a857 43095 cont Perform [cont] a871 42121 run Perform [run] a883 43139 gosub Perform [gosub] a8a0 43168 goto Perform [goto] a8d2 43218 return Perform [return] a8f8 43256 data Perform [data] a906 43270 datan Search for Next Statement / Line a928 43304 if Perform [if] a93b 43323 rem Perform [rem] a94b 43339 ongoto Perform [on] a96b 43371 linget Fetch linnum From BASIC a9a5 43429 let Perform [let] a9c4 43460 putint Assign Integer a9d6 43478 ptflpt Assign Floating Point a9d9 43481 putstr Assign String a9e3 43491 puttim Assign TI$ aa2c 43564 getspt Add Digit to FAC#1 aa80 43648 printn Perform [print]# aa86 43654 cmd Perform [cmd] aa9a 43674 strdon Print String From Memory aaa0 43680 print Perform [print] aab8 43704 varop Output Variable aad7 43735 crdo Output CR/LF aae8 43752 comprt Handle comma, TAB(, SPC( ab1e 43806 strout Output String ab3b 43835 outspc Output Format Character ab4d 43853 doagin Handle Bad Data ab7b 43899 get Perform [get] aba5 43941 inputn Perform [input#] abbf 43967 input Perform [input] abea 44010 bufful Read Input Buffer abf9 44025 qinlin Do Input Prompt ac06 44038 read Perform [read] ac35 44085 rdget General Purpose Read Routine acfc 44284 exint Input Error Messages TEXT ad1e 44318 next Perform [next] ad61 44385 donext Check Valid Loop ad8a 44426 frmnum Confirm Result ad9e 44446 frmevl Evaluate Expression in Text ae83 44675 eval Evaluate Single Term aea8 44712 pival Constant - pi DATA aead 44717 qdot Continue Expression aef1 44785 parchk Expression in Brackets aef7 44791 chkcls Confirm Character af08 44808 synerr Output ?SYNTAX Error af0d 44813 domin Set up NOT Function af14 44820 rsvvar Identify Reserved Variable af28 44840 isvar Search for Variable af48 44872 tisasc Convert TI to ASCII String afa7 44967 isfun Identify Function Type afb1 44977 strfun Evaluate String Function afd1 45009 numfun Evaluate Numeric Function afe6 45030 orop Perform [or], [and] b016 45078 dorel Perform <, =, > b01b 45083 numrel Numeric Comparison b02e 45102 strrel String Comparison b07e 45182 dim Perform [dim] b08b 45195 ptrget Identify Variable b0e7 45287 ordvar Locate Ordinary Variable b11d 45341 notfns Create New Variable b128 45352 notevl Create Variable b194 45460 aryget Allocate Array Pointer Space b1a5 45477 n32768 Constant 32768 in Flpt DATA b1aa 45482 facinx FAC#1 to Integer in (AC/YR) b1b2 45490 intidx Evaluate Text for Integer b1bf 45503 ayint FAC#1 to Positive Integer b1d1 45521 isary Get Array Parameters b218 45592 fndary Find Array b245 45637 bserr ?BAD SUBSCRIPT/?ILLEGAL QUANTITY b261 45665 notfdd Create Array b30e 45838 inlpn2 Locate Element in Array b34c 45900 umult Number of Bytes in Subscript b37d 45949 fre Perform [fre] b391 45969 givayf Convert Integer in (AC/YR) to Flpt b39e 45982 pos Perform [pos] b3a6 45990 errdir Confirm Program Mode b3e1 46049 getfnm Check Syntax of FN b3f4 46068 fndoer Perform [fn] b465 46181 strd Perform [str$] b487 46215 strlit Set Up String b4d5 46293 putnw1 Save String Descriptor b4f4 46324 getspa Allocate Space for String b526 46374 garbag Garbage Collection b5bd 46525 dvars Search for Next String b606 46598 grbpas Collect a String b63d 46653 cat Concatenate Two Strings b67a 46714 movins Store String in High RAM b6a3 46755 frestr Perform String Housekeeping b6db 46811 frefac Clean Descriptor Stack b6ec 46828 chrd Perform [chr$] b700 46848 leftd Perform [left$] b72c 46892 rightd Perform [right$] b737 46903 midd Perform [mid$] b761 46945 pream Pull sTring Parameters b77c 46972 len Perform [len] b782 46978 len1 Exit String Mode b78b 46987 asc Perform [asc] b79b 47003 gtbytc Evaluate Text to 1 Byte in XR b7ad 47021 val Perform [val] b7b5 47029 strval Convert ASCII String to Flpt b7eb 47083 getnum Get parameters for POKE/WAIT b7f7 47095 getadr Convert FAC#1 to Integer in LINNUM b80d 47117 peek Perform [peek] b824 47140 poke Perform [poke] b82d 47149 wait Perform [wait] b849 47177 faddh Add 0.5 to FAC#1 b850 47184 fsub Perform Subtraction b862 47202 fadd5 Normalise Addition b867 47207 fadd Perform Addition b947 47431 negfac 2's Complement FAC#1 b97e 47486 overr Output ?OVERFLOW Error b983 47491 mulshf Multiply by Zero Byte b9bc 47548 fone Table of Flpt Constants DATA b9ea 47594 log Perform [log] ba28 47656 fmult Perform Multiply ba59 47705 mulply Multiply by a Byte ba8c 47756 conupk Load FAC#2 From Memory bab7 47799 muldiv Test Both Accumulators bad4 47828 mldvex Overflow / Underflow bae2 47842 mul10 Multiply FAC#1 by 10 baf9 47865 tenc Constant 10 in Flpt DATA bafe 47870 div10 Divide FAC#1 by 10 bb07 47879 fdiv Divide FAC#2 by Flpt at (AC/YR) bb0f 47887 fdivt Divide FAC#2 by FAC#1 bba2 48034 movfm Load FAC#1 From Memory bbc7 48071 mov2f Store FAC#1 in Memory bbfc 48124 movfa Copy FAC#2 into FAC#1 bc0c 48140 movaf Copy FAC#1 into FAC#2 bc1b 48155 round Round FAC#1 bc2b 48171 sign Check Sign of FAC#1 bc39 48185 sgn Perform [sgn] bc58 48216 abs Perform [abs] bc5b 48219 fcomp Compare FAC#1 With Memory bc9b 48283 qint Convert FAC#1 to Integer bccc 48332 int Perform [int] bcf3 48371 fin Convert ASCII String to a Number in FAC#1 bdb3 48563 n0999 String Conversion Constants DATA bdc2 48578 inprt Output 'IN' and Line Number bddd 48605 fout Convert FAC#1 to ASCII String be68 48744 foutim Convert TI to String bf11 48913 fhalf Table of Constants DATA bf71 49009 sqr Perform [sqr] bf7b 49019 fpwrt Perform power ($) bfb4 49076 negop Negate FAC#1 bfbf 49087 logeb2 Table of Constants DATA bfed 49133 exp Perform [exp] ; ; ; C64 Kernal ROM ; e000 57344 (exp continues) EXP continued From BASIC ROM e043 57411 polyx Series Evaluation e08d 57485 rmulc Constants for RND DATA e097 57495 rnd Perform [rnd] e0f9 57593 bioerr Handle I/O Error in BASIC e10c 57612 bchout Output Character e112 57618 bchin Input Character e118 57624 bckout Set Up For Output e11e 57630 bckin Set Up For Input e124 57636 bgetin Get One Character e12a 57642 sys Perform [sys] e156 57686 savet Perform [save] e165 57701 verfyt Perform [verify / load] e1be 57790 opent Perform [open] e1c7 57799 closet Perform [close] e1d4 57812 slpara Get Parameters For LOAD/SAVE e200 57856 combyt Get Next One Byte Parameter e206 57862 deflt Check Default Parameters e20e 57870 cmmerr Check For Comma e219 57881 ocpara Get Parameters For OPEN/CLOSE e264 57956 cos Perform [cos] e26b 57963 sin Perform [sin] e2b4 58036 tan Perform [tan] e2e0 58080 pi2 Table of Trig Constants DATA e30e 58126 atn Perform [atn] e33e 58174 atncon Table of ATN Constants DATA e37b 58235 bassft BASIC Warm Start e394 58260 init BASIC Cold Start e3a2 58274 initat CHRGET For Zero-page e3ba 58298 rndsed RND Seed For zero-page DATA e3bf 58303 initcz Initialize BASIC RAM e422 58402 initms Output Power-Up Message e447 58439 bvtrs Table of BASIC Vectors DATA e453 58451 initv Initialize Vectors e45f 58463 words Power-Up Message DATA e4ad 58541 - Patch for BASIC Call to CHKOUT e4b7 58551 - Unused Bytes For Future Patches EMPTY e4da 58586 - Reset Character Colour e4e0 58592 - Pause After Finding Tape File e4ec 58604 - RS-232 Timing Table -- PAL DATA e500 58624 iobase Get I/O Address e505 58629 screen Get Screen Size e50a 58634 plot Put / Get Row And Column e518 58648 cint1 Initialize I/O e544 58692 - Clear Screen e566 58726 - Home Cursor e56c 58732 - Set Screen Pointers ; e59a 58778 - Set I/O Defaults e5b4 58804 lp2 Get Character From Keyboard Buffer e5ca 58826 - Input From Keyboard e632 58930 - Input From Screen or Keyboard e684 59012 - Quotes Test e691 59025 - Set Up Screen Print e6b6 59062 - Advance Cursor e6ed 59117 - Retreat Cursor e701 59137 - Back on to Previous Line e716 59158 - Output to Screen e87c 59516 - Go to Next Line e891 59537 - Output <CR> e8a1 59553 - Check Line Decrement e8da 59610 - Colour Code Table e8ea 59626 - Scroll Screen e965 59749 - Open A Space On The Screen e9c8 59848 - Move A Screen Line e9e0 59872 - Syncronise Colour Transfer e9f0 59888 - Set Start of Line e9ff 59903 - Clear Screen Line ea13 59923 - Print To Screen ea24 59940 - Syncronise Colour Pointer ea31 59953 - Main IRQ Entry Point ea87 60039 scnkey Scan Keyboard eacb 60107 - Set Colour Code eadd 60125 - Process Key Image eb79 60281 - Keyboard Select Vectors WORD eb81 60289 - Keyboard 1 -- unshifted DATA ebc2 60354 - Keyboard 2 -- shifted DATA ec03 60419 - Keyboard 3 -- commodore DATA ec44 60484 - Graphics/text control ec78 60536 - Keyboard 4 -- control DATA ecb9 60601 - Video Chip Setup Table DATA ece7 60647 - Shift-Run Equivalent ecf0 60656 - Low Byte Screen Line Addresses DATA ed09 60681 talk Send TALK / LISTEN ed40 60736 - Send Data On Serial Bus edad 60845 - Flag Errors edb9 60857 second Send LISTEN Secondary Address edbe 60862 - Clear ATN edc7 60871 tksa Send Talk Secondary Address edcc 60876 - Wait For Clock eddd 60893 ciout Send Serial Deferred edef 60911 untlk Send UNTALK / UNLISTEN ee13 60947 acptr Receive From Serial Bus ee85 61061 - Serial Clock On ee8e 61070 - Serial Clock Off ee97 61079 - Serial Output 1 eea0 61088 - Serial Output 0 eea9 61097 - Get Serial Data And Clock In eeb3 61107 - Delay 1 ms eebb 61115 - RS-232 Send ef06 61190 - Send New RS-232 Byte ef2e 61230 - No DSR / CTS Error ef39 61241 - Disable Timer ef4a 61258 - Compute Bit Count ef59 61273 - RS-232 Receive ef7e 61310 - Set Up To Receive ef90 61328 - Process RS-232 Byte efe1 61409 - Submit to RS-232 f00d 61453 - No DSR Error f017 61463 - Send to RS-232 Buffer f04d 61517 - Input From RS-232 f086 61574 - Get From RS-232 f0a4 61604 - Serial Bus Idle f0bd 61629 - Table of Kernal I/O Messages DATA f12b 61739 - Print Message if Direct f13e 61758 getin Get a byte f157 61783 chrin Input a byte f199 61849 - Get From Tape / Serial / RS-232 f1ca 61898 chrout Output One Character f20e 61966 chkin Set Input Device f250 62032 chkout Set Output Device f291 62097 close Close File f30f 62223 - Find File f31f 62239 - Set File values f32f 62255 clall Abort All Files f333 62259 clrchn Restore Default I/O f34a 62282 open Open File f3d5 62421 - Send Secondary Address f409 62473 - Open RS-232 f49e 62622 load Load RAM f4b8 62648 - Load File From Serial Bus f533 62771 - Load File From Tape f5af 62927 - Print "SEARCHING" f5c1 62913 - Print Filename f5d2 62930 - Print "LOADING / VERIFYING" f5dd 62941 save Save RAM f5fa 62970 - Save to Serial Bus f659 63065 - Save to Tape f68f 63119 - Print "SAVING" f69b 63131 udtim Bump Clock f6dd 63197 rdtim Get Time f6e4 63204 settim Set Time f6ed 63213 stop Check STOP Key f6fb 63227 - Output error Messages f72d 63277 - Find Any Tape Header f76a 63338 - Write Tape Header f7d0 63440 - Get Buffer Address f7d7 63447 - Set Buffer Stat / End Pointers f7ea 63466 - Find Specific Tape Header f80d 63501 - Bump Tape Pointer f817 63511 - Print "PRESS PLAY ON TAPE" f82e 63534 - Check Tape Status f838 63544 - Print "PRESS RECORD..." f841 63553 - Initiate Tape Read f864 63588 - Initiate Tape Write f875 63605 - Common Tape Code f8d0 63696 - Check Tape Stop f8e2 63714 - Set Read Timing f92c 63788 - Read Tape Bits fa60 64096 - Store Tape Characters fb8e 64398 - Reset Tape Pointer fb97 64407 - New Character Setup fba6 64422 - Send Tone to Tape fbc8 64456 - Write Data to Tape fbcd 64461 - IRQ Entry Point fc57 64599 - Write Tape Leader fc93 64659 - Restore Normal IRQ fcb8 64696 - Set IRQ Vector fcca 64714 - Kill Tape Motor fcd1 64721 - Check Read / Write Pointer fcdb 64731 - Bump Read / Write Pointer fce2 64738 - Power Reset Entry fd02 64770 - Check For 8-ROM fd12 64786 - 8-ROM Mask DATA fd15 64789 restor Kernal Reset fd1a 64794 vector Kernal Move fd30 64816 - Kernal Reset Vectors WORD fd50 64848 ramtas Initialise System Constants fd9b 64923 - IRQ Vectors For Tape I/O WORD fda3 64931 ioinit Initialise I/O fddd 64989 - Enable Timer fdf9 65017 setnam Save Filename Data fe00 65024 setlfs Save File Details fe07 65031 readst Get Status fe18 65048 setmsg Flag Status fe21 65057 settmo Set IEEE Timeout fe25 65061 memtop Read / Set Top of Memory fe34 65076 membot Read / Set Bottom of Memory fe43 65091 - NMI Entry Point fe66 65126 - Warm Start Basic fec2 65218 - RS-232 Timing Table - NTSC DATA fed6 65238 - NMI RS-232 In ff07 65287 - NMI RS-232 Out ff43 65347 - Fake IRQ Entry ff48 65352 - IRQ Entry ff5b 65371 cint Initialize screen editor ff80 65408 - Kernal Version Number [03] DATA ; ; C64 Kernal Jump Table ; ff81 jmp $ff5b cint Init Editor & Video Chips ff84 jmp $fd23 ioinit Init I/O Devices, Ports & Timers ff87 jmp $fd50 ramtas Init Ram & Buffers ff8a jmp $fd15 restor Restore Vectors ff8d jmp $fd1a vector Change Vectors For User ff90 jmp $fe18 setmsg Control OS Messages ff93 jmp $edb9 secnd Send SA After Lister ff96 jmp $edc7 tksa Send SA After Talk ff99 jmp $fe25 memtop Set/Read System RAM Top ff9c jmp $fe34 membot Set/Read System RAM Bottom ff9f jmp $ea87 scnkey Scan Keyboard ffa2 jmp $fe21 settmo Set Timeout In IEEE ffa5 jmp $ee13 acptr Handshake Serial Byte In ffa8 jmp $eddd ciout Handshake Serial Byte Out ffab jmp $edef untalk Command Serial Bus UNTALK ffae jmp $edfe unlsn Command Serial Bus UNLISTEN ffb1 jmp $ed0c listn Command Serial Bus LISTEN ffb4 jmp $ed09 talk Command Serial Bus TALK ffb7 jmp $fe07 readss Read I/O Status Word ffba jmp $fe00 setlfs Set Logical File Parameters ffbd jmp $fdf9 setnam Set Filename ffc0 jmp ($031a) (iopen) Open Vector [f34a] ffc3 jmp ($031c) (iclose) Close Vector [f291] ffc6 jmp ($031e) (ichkin) Set Input [f20e] ffc9 jmp ($0320) (ichkout) Set Output [f250] ffcc jmp ($0322) (iclrch) Restore I/O Vector [f333] ffcf jmp ($0324) (ichrin) Input Vector, chrin [f157] ffd2 jmp ($0326) (ichrout) Output Vector, chrout [f1ca] ffd5 jmp $f49e load Load RAM From Device ffd8 jmp $f5dd save Save RAM To Device ffdb jmp $f6e4 settim Set Real-Time Clock ffde jmp $f6dd rdtim Read Real-Time Clock ffe1 jmp ($0328) (istop) Test-Stop Vector [f6ed] ffe4 jmp ($032a) (igetin) Get From Keyboad [f13e] ffe7 jmp ($032c) (iclall) Close All Channels And Files [f32f] ffea jmp $f69b udtim Increment Real-Time Clock ffed jmp $e505 screen Return Screen Organization fff0 jmp $e50a plot Read / Set Cursor X/Y Position fff3 jmp $e500 iobase Return I/O Base Address fff6 [5252] - fff8 [5942] SYSTEM fffa Transfer Vectors fffa [fe43] NMI fffc [fce2] RESET fffe [ff48] IRQ