CP/M/CPM_CDROM.iso/enterprs/cpm/utils/a/assy1-5.arc/Z80DIS.V21

Text File | 1993-03-31 | 12.5 KB | 263 lines

                                                         January 11, 1986
        This is the READ-ME file from the Z80DIS.LBR package, version 2.1
        ------------------------------------------------------===========

        Version 2.1 change note:

             Versioε 2.░ addeΣ artificia∞ intelligencσ t∩ Z80DIS«

             Versioεá 2.▒ correct≤ ß smal∞ buτ iε thσ processinτ oµá INC¼ ì
        áááááDEC¼á anΣá L─ usinτ inde° register≤ I╪ anΣ IY«á Versioεá 2.▒ ì
        áááááals∩á significantl∙ enhance≤ thσ abilitie≤ oµ thσá disassem-ì
        áááááble≥á t∩á distinguisΦ betweeε ASCI╔ blanδ (2░ hex⌐á anΣá thσ ì
        áááááinstructioεá "J╥ NZ,xxxxó (als∩ 2░ hex⌐ whicΦ lead≤ t∩á lot≤ ì
        áááááanΣ lot≤ oµ phon∙ instructioε jum≡ references«á Versioεá 2.░ ì
        áááááworkeΣ wel∞ iε determinatioε oµ correc⌠ breaδ type≤ fo≥ 808░ ì
        ááááácode«á WitΦ versioε 2.1¼á yo⌡ no≈ havσ tha⌠ reliabilit∙ witΦ ì
        áááááZ8░ codσ a≤ well.

        Z80DI╙á i≤á aε entirel∙ ne≈ disassemble≥ fo≥ Z8░ baseΣ CP/═á sys-ì
        tems«á  Z80DI╙ i≤ writteε iε TURB╧ PASCAL«á Z80DI╙ generate≤á Z8░ ì
        mnemonic≤á anΣ prepare≤ aε assembl∙ languagσ filσ witΦ man∙á spe-ì
        cia∞á feature≤ fo≥ easσ oµ understandinτ thσ inten⌠ oµ thσ disas-ì
        sembleΣ code« Thσ sourcσ fo≥ Z80DI╙ ha≤ grown¼ witΦ thi≤ version¼ ì
        u≡ t∩ 580░ line≤ oµ coding«

        WitΦ version≤ 2.░ anΣ higher¼ yo⌡ neeΣ kno≈ ver∙ littlσ abou⌠ thσ ì
        forma⌠ oµ thσ *.CO═ filσ t∩ producσ ß nearl∙ finisheΣ sourcσ filσ ì
        iε mos⌠ cases« Iε additioε ß largσ numbe≥ oµ conveniencσ feature≤ ì
        anΣ default≤ havσ beeε addeΣ tha⌠ werσ no⌠ presen⌠ iε versioεá 1« ì
        ┴ ful∞ synopsi≤ oµ thσ version≤ oµ thσ prograφ iε curren⌠ distri-ì
        butioεá i≤ includeΣ iε thσ Z80DIS20.DO├ file«á Highlight≤ oµá thσ ì
        curren⌠ change≤ follo≈ a⌠ thσ enΣ oµ thi≤ paper.

        BotΦá thσá Z80DI╙ prograφ anΣ thσ Z80DI╙á documentatioεá arσá (C⌐ ì
        Copyrigh⌠á 198╡ anΣ 198╢ b∙ KennetΦ Gielow╗á Al∞ Right≤ Reserved« ì
        Whilσá ╔á aφ freel∙ distributinτ thσ binar∙ codσá fo≥á non-profi⌠ ì
        use¼ ╔ aφ reservinτ thσ sourcσ codσ a≤ ß tradσ secret.

        Thi≤á prograφ require≤ ß Z8░ baseΣ compute≥ runninτ CP/═á versioε ì
        2.▓á o≥á higher«á Thσ codσ wa≤ compileΣ fo≥ ß 50╦á TPA╗á thσá to≡ ì
        addres≤ i≤ C7FF« Thi≤ slightl∙ smal∞ sizσ wa≤ donσ fo≥ compatibi-ì
        lit∙ witΦ CP/═ 3.░ anΣ ZCPR3.

        Thσ followinτ file≤ wil∞ bσ founΣ oε Z80DIS21.LB╥ fo≥ thi≤á prog-ì
        raφ distributioε librar∙ package:

             Z80DIS.COM    - thσ disassembler program
             Z80DIS.000    - overla∙ file fo≥ Z80DIS
             Z80DIS.00▒    - overlay file for Z80DIS

             ZDINSTAL.COM  - a terminal command installatioε program
             ZDINSTAL.MSG  - contain≤ tex⌠ oµ ZDINSTA╠ message≤
             ZDINSTAL.DTA  - contain≤ termina∞ characteristic≤ data

             Z80DIS20.DOC  - aε abbreviateΣ use≥ manua∞ iε read∙ t∩ prin⌠ ì
          áááááááááááááááááááááformat« (Seσ documentatioε noticσ ⌐

è





        Z80DIS 2.1                                               01/11/86


        Thσ Z80DI╙ binar∙ i≤ iε threσ files« Thσ ZDINSTA╠ file≤ arσ baseΣ ì
        oεá thσ TURB╧ Toolbo° GINS╘ prograφ anΣ wil∞ tailo≥ thσá interac-ì
        tivσ display≤ t∩ you≥ terminal.

        Thσá prograφá i≤ eas∙ t∩ usσ witΦ interactivσ display≤ fo≥á para-ì
        mete≥ specification«á Al∞ contro∞ parameter≤ havσ default≤ prese⌠ ì
        t∩á thσ mos⌠ likel∙ values«á Thσ DO├ filσ i≤ thσ tex⌠ oµ ßá shor⌠ ì
        use≥ manua∞ whicΦ explain≤ mos⌠ oµ thσ importan⌠ point≤ needeΣ t∩ ì
        ge⌠ going.
                              DOCUMENTATIO╬ NOTIC┼
                              --------------------
        Thσ original¼ forty-plu≤ pagσ use≥ manua∞ gavσ extensivσ example≤ ì
        anΣá useΣá disassembl∙ oµ thσ publiπ domaiε prograφ D.CO═á a≤á aε ì
        example«á Unfortunately¼ witΦ thσ addition≤ t∩ documen⌠ thσ newe≥ ì
        feature≤á anΣá givσ additiona∞ suggestion≤á fo≥á use¼á tha⌠á use≥ ì
        manua∞á  anΣ expandeΣ prograφ togethe≥ havσ botΦ gotteε s∩á largσ ì
        tha⌠á mos⌠ systeφ operator≤ woulΣ no⌠ carr∙ thσ completσ library« ì
        Somethinτá haΣ t∩ give«á ╔ fee∞ tha⌠ thσ prograφ i≤ largel∙á selµ ì
        explanator∙á s∩á tha⌠ yo⌡ caε ge⌠ starteΣ ver∙ wel∞ witΦá onl∙á ß ì
        shorteneΣ manual«á Thi≤ abbreviateΣ manua∞ i≤ includeΣ here«á Thσ ì
        shor⌠ use≥ manua∞ deal≤ mainl∙ witΦ installinτ thσ Z80DI╙ prograφ ì
        anΣ doinτ ß simplσ disassembly«á Thi≤ shor⌠ manua∞ i≤ al∞ tha⌠á ß ì
        casua∞ use≥ woulΣ probabl∙ need.

        Thσá longe≥ manua∞ expand≤ oε thσ discussioε oµ thσ feature≤á anΣ ì
        explain≤á thσá step-wisσá approacΦ t∩ dealinτá witΦá mucΦá large≥ ì
        sourcσ codes« Thσ manua∞ als∩ deal≤ witΦ disassemblinτ codσ whicΦ ì
        relocate≤á itself«á Extensivσá example≤ arσ included«á Al∞á erro≥ ì
        message≤ anΣ secondar∙ option≤ arσ discusseΣ iε detail.

        Thσ ful∞ Z80DI╙ USE╥ MANUA╠ i≤ availablσ b∙ mail«á ╔ aφ askinτá ß ì
        nomina∞á chargσá oµ ñ 20.0░ whicΦ include≤ thσá manual¼á postage¼ ì
        handling¼ anΣ aε updatσ notificatioε service« Yo⌡ arσ granteΣ thσ ì
        righ⌠á t∩ makσ not-for-profi⌠ copie≤ oµ thσ manual«á Thσá prograφ ì
        itselµá i≤á no⌠á availablσ b∙ mai∞ a≤ ╔ d∩á no⌠á havσá extensive¼ ì
        multi-forma⌠ disδ cop∙ capability«á Thσ notificatioε servicσ wil∞ ì
        consis⌠á oµ ß lette≥ t∩ yo⌡ anytimσ ß ne≈ versioε i≤ releaseΣá s∩ ì
        tha⌠ yo⌡ ma∙ bσ oε thσ lookou⌠ fo≥ it.

        T∩á orde≥ ß cop∙ oµ thσ Z80DI╙ USE╥ MANUAL¼á senΣ ß reques⌠á witΦ ì
        you≥ name¼ address¼ anΣ ß checδ fo≥ ñ 20.0░ t∩ --

                  KennetΦ Gielow
                  7╣ Tuli≡ Lane
                  Pal∩ Alto¼ C┴  94303

        -----------------------------------------------------------------

                               FEATURE╙ O╞ Z80DIS
                               ------------------
        Thσá majo≥á featurσá oµ Z80DI╙ i≤ aε extensivσá analysi≤á oµá thσ ì
        memor∙á usagσ b∙ thσ prograφ unde≥ investigation«á Thi≤á analysi≤ ì
        capabilit∙á form≤ thσ basi≤ fo≥ aε automatiπ partitioninτ oµá thσ ì
        codσ t∩ generatσ thσ breaδ table«á Thi≤ analysi≤ als∩ produce≤á ß ì
        fully-annotateΣ cros≤ referencσ oµ al∞ addresses.

        ┴á disassemble≥á mus⌠ kno≈ whethe≥ thσ byte≤ arσ instruction≤á o≥ ìè

                                        2



        Z80DIS 2.1                                               01/11/86


        datßá iε orde≥ t∩ proceed«á Z80DI╙ i≤ thσ firs⌠á disassemble≥á t∩ ì
        producσá it≤á owεá breaδ tablσ fo≥ thi≤á purpose«á Somσá previou≤ ì
        programs¼ sucΦ a≤ RESOURCE¼ havσ includeΣ ß searcΦ fo≥ ASCI╔ tex⌠ ì
        regions¼á bu⌠ havσ lef⌠ thσ verificatioε anΣ interpretatioε u≡ t∩ ì
        thσá user«á Mos⌠ othe≥ disassembler≤ arσ fooleΣ b∙ thσá tricδá oµ ì
        addinτá nonsensσ byte≤ afte≥ jump≤ t∩ causσ thσ analysi≤ t∩á fal∞ ì
        ou⌠ oµ synchronizatioε witΦ instructioε codσ interpretation«

        Z80DI╙á produce≤ aε outpu⌠ listinτ  whicΦ itemize≤ al∞á addresse≤ ì
        referenceΣ b∙ thσ code¼á distinguishe≤ type≤ oµ labe∞ references¼ ì
        mark≤á subroutine≤á anΣá jump≤ anΣ produce≤ aεá annotateΣá cross-ì
        reference«á Thi≤ listinτ show≤ thσ exac⌠ modσ oµ usagσ fo≥á ever∙ ì
        reference║á Jum≡ absolute¼ Jum≡ relative¼ Call¼ Restart¼ LoaΣ 16-ì
        bit¼á Storσ 16-bit¼ Immediatσ 16-bit¼ LoaΣ 8-bit¼ Storσ 8-bit« Iε ì
        versioεá 2.1¼á thi≤ listinτ als∩ show≤ thσ breaδ tablσ regioεá oµ ì
        residenc∙á fo≥á eacΦ labe∞ s∩ tha⌠ yo⌡ ma∙ inspec⌠ thσá lis⌠á fo≥ ì
        inconsistencies.

             Aεá addres≤ labelinτ conventioε assist≤ iε understandinτ thσ ì
        assembl∙á codσ generated«á EacΦ labe∞ generateΣ oεá thσá assembl∙ ì
        listinτá indicates¼á b∙ format¼á no⌠ onl∙ thσ generiπ typσ (Jump¼ ì
        Call¼ Data¼ Other⌐ oµ an∙ references¼ bu⌠ als∩ thσ singularit∙ oµ ì
        thσ reference.

                  Fo≥á example¼á J#02E│ useΣ a⌠ addres≤ 02E│á indi-ì
        áááááááááácate≤ tha⌠ onl∙ onσ referencσ wa≤ madσ t∩ addres≤ ì
        áááááááááá02E│ anΣ tha⌠ tha⌠ referencσ wa≤ ß JUMP.

        Iεá additioε t∩ helpinτ yo⌡ b∙ automatiπ analysi≤ oµ memor∙á use¼ ì
        Z80DI╙ als∩ assist≤ yo⌡ b∙ stylinτ thσ presentatioε oµ thσ disas-ì
        sembleΣ code«á Thσ disassembleΣ codσ i≤ outpu⌠ iε tw∩ forms║ BotΦ ì
        thσ usua∞ *.MA├ filσ anΣ ß printe≥ formatteΣ *.PR╬ file.

        Thσ *.PR╬ filσ i≤ styleΣ t∩ looδ likσ thσ outpu⌠ oµ aεá assemble≥ ì
        witΦ botΦ thσ instruction≤ anΣ assembleΣ byte≤ shown«á Thσ juxta-ì
        positioεá oµá thσá hexadecima∞ byte≤ anΣ thσá assembl∙á mnemonic≤ ì
        allow≤á thσá use≥ t∩ recognizσ error≤ causeΣá b∙á aεá incorrectl∙ ì
        defineΣ breaδ table«

        -----------------------------------------------------------------

        ┴ persona∞ note:

             ╔á wrotσ thi≤ disassemble≥ becausσ ╔ coulΣ no⌠ finΣá anothe≥ ì
        tha⌠á woulΣá reall∙á opeε u≡ ß foreigεá prograφá fo≥á inspection« ì
        RESOURC┼á anΣá it≤ spin-off≤ givσ yo⌡ onl∙ ß pin-holσ looδá a⌠á ß ì
        prograφá withou⌠ indicatinτ thσ importan⌠ interaction≤ witΦ othe≥ ì
        part≤á oµá thσ code«á Z80DI╙ rectifie≤ tha⌠ lacδ vißá thσá cross-ì
        reference¼á disassembl∙ comments¼á anΣ automatiπ structurσ analy-ì
        sis« ╔ hopσ tha⌠ yo⌡ wil∞ finΣ i⌠ a≤ usefu∞ a≤ ╔ have«

                                      Kenneth Gielow







                                        3



        Z80DIS 2.1                                               01/11/86


                       Significant Changes in Version 2.1
                       ----------------------------------

             1⌐ BU╟ CORRECTION║á Durinτ automatiπ breaδ tablσ creatioε iε ì
        versioε 2.0¼á thσ code≤ DD34¼á DD35¼á DD36¼ FD34¼ FD35¼ FD3╢ werσ ì
        no⌠á correctl∙á recognized«á Thi≤ resulteΣ iεá falsσá assumption≤ ì
        abou⌠á thσá legalit∙á oµ somσ Z8░ codσ region≤á whicΦá werσá theε ì
        though⌠ t∩ bσ datß region≤ rathe≥ thaε instructioε regions«á Thi≤ ì
        ha≤ beeε correcteΣ iε versioε 2.1.

             2⌐ IMPROVEMEN╘ I╬ HANDLIN╟ J╥ REFERENCES║á Iεá disassemblinτ ì
        808░á coding¼á instructioε jump≤ anΣ call≤ usσ 3-bytσ addressing╗ ì
        tha⌠ i≤ unambiguou≤ anΣ no⌠ easil∙ misinterpreted« WitΦ Z8░ code¼ ì
        ASCI╔ tex⌠ block≤ contaiε code≤ tha⌠ arσ easil∙ mistakeε fo≥á Z8░ ì
        relativσá jumps╗á tha⌠á create≤ apparen⌠ jum≡ reference≤ t∩á codσ ì
        withiεá 12╕ byte≤ beforσ o≥ afte≥ thσá misinterpreteΣá byte«á Thσ ì
        ASCI╔ blanδ (2░ hex⌐ i≤ especiall∙ baΣ a≤ i⌠ look≤ exactl∙ likσ ß ì
        "J╥ NZ,xxxxó code« Versioε 2.▒ ha≤ beeε mucΦ improveΣ t∩ distrus⌠ ì
        relativσá jum≡ reference≤ a≤ ß basi≤ fo≥ declarinτ ß regioε t∩ bσ ì
        instructions«á Versioεá 2.▒á examine≤ corroborativσá evidencσá t∩ ì
        distinguisΦ ASCI╔ datß froφ instructioε codes«

             3⌐ OTHE╥ IMPROVEMENTS║á Thσ entirσ Exper⌠ systeφá comprisinτ ì
        thσ Automatiπ Breaδ Determinatioε featurσ wa≤ enhanceΣ t∩ yielΣ ß ì
        morσ completσ analysi≤ oµ thσ codσ structure.

                      Highlight≤ oµ Change≤ iε Versioε 2.0
                      ------------------------------------

             1⌐ AUTOMATI├ BREA╦ TABL┼ CREATION║ Wheε thσ prograφ ask≤ fo≥ ì
        breaδá tablσ inputs¼á yo⌡ ma∙ no≈ ente≥ '*º whicΦ wil∞ trigge≥á ß ì
        detaileΣ analysi≤ oµ thσ structurσ anΣ relationship≤ oµ thσ inpu⌠ ì
        code.

             2⌐ Thσ CO═ filσ anΣ overla∙ file≤ fo≥ Z80DI╙ n∩ longe≥á neeΣ ì
        t∩ bσ oε you≥ defaul⌠ disδ drive«

             3⌐á Thσá cross-referencσ listinτ no≈ show≤ thσá breaδá tablσ ì
        regioε oµ residenc∙ fo≥ eacΦ label.

             4⌐á Overflo≈ oµ memor∙ o≥ disδ spacσ durinτ pas≤ ▒ wil∞á no⌠ ì
        abor⌠ execution.

             5⌐á Yo⌡ ma∙ no≈ disassemblσ direc⌠ t∩ you≥ printe≥ b∙ speci-ì
        fyinτ LST║ a≤ thσ lis⌠ filσ name.

             6⌐á Yo⌡á ma∙á no≈ suppres≤ creatioε oµ eithe≥ .PR╬á o≥á .MA├ ì
        outpu⌠ files.

             7⌐ Thσ defaul⌠ namσ fo≥ thσ breaδ tablσ savσ filσ i≤ no≈ thσ ì
        samσ namσ a≤ tha⌠ oµ you≥ inpu⌠ file«

        _________________________________________________________________
        CP/M is a registered trademark of Digital Research Inc.,
        TURB╧ PASCA╠ i≤ ß trademarδ oµ BorlanΣ International,
        Z-80 is a trademark of Zilog Corp.



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