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( To oo = = NOTE: uNLEss OrHERWISE SPECIFIED LA | — |B08e| TOP VALVES ARE IN OMS 1/4 WATT 254 toil ed Ls CAPACITOR. VALUES ARE IN HICROFARADS ee 3. EDEN. Ths. PIuMMAPY GRUND >|—|er aN DEN T-% SEC tC ARY GROUND. D <3) $1 POSITION TH BACK OFF ©) : W. ~ . Y Rio 212 RITE” Wee Wei 22. SE ' _ Fl— : Lfou G Ba 7emosc |? -- ——| 20] -svstey] | : oto 3 | AG 1 |+300V Ju [c3 |easq ADDED yMPER BETWEEN! ooo | og 3 | Focus Cl2tciB oO = ee ea gol CR IY i 2 [2a |ezes[RB0 was — VY Vstv Forse TT ne Ra: G 2y, 8 Basse 2 | se ¥ — Oe A | BAT RETURN — c cre 1 Fis: 0 |+a3v i|dlz JUMPER cee f 5 = aT t R10 Le | 2209 7] 2aty, 08957 ! a 1K macs | ' ie iu +i2v ;___| | cra) cul R23. ie oe | jiNuga7 i st i y . INS39 ~ uv — ae | | Z a a aw i2w i CRS! Ca He au av —— © be | _ io ‘ig— uF Gai Aq ~ i TO’ am LD eee’ [s002- pe ea0) (he 20 H Fk bet ® Ca | vw i lev SU) ay gene | a | f £ = T Bog ry +) Cz = + BK 35, NNO? rey LEI See Ge 33 oT RIS Tie v' tev) Sov tov. EX) “N93 Le ! vv 22 Pg afte — w |-2y. 24 fy Sa tase N |+5V SEN 3) 50 By $470 REF DESIGNATION -USED 3] ot ri? sh -$a27 5] W2W Care) ca20 | iE _ [C40 , CRZ6 ,L6.0 ay éj 1g NN933| INHO33 oN x Ae ES + Os 3 u cae |) tose MBS-U51 ‘ane p08 3i8 i vous | 7 3by ! \ b | | vy au oS 830 1 5 ! 2N3s04 _ 4.3K © [METRIC ay olen ed RIC! @gapple computer rT ‘ Sy | i A Aas | DK = | SCHEMATIC. | = 7 POwER SUPPLY E)MeF EA Sait a LZ | oe |] oso-uor-y | 4 ] 3 ia 2 T 1

UObject Classes: Class TObject TCollection TList TArray TString TFile TScanner TListScanner TArrayScanner TStringScanner TFileScanner Fields size dynStart holeStart holeSize holeStd recordBytes path password scanners collection position increment scanOone atEnd actual accesses refnum error UDraw Classes: Class Fields TlJbject TArea TPad TBranehArea (de;ined in {}Object) innerReet outerReet parentBraneh port viewedLReet visLRect 8vailLRect scrollOffset origin edOffset clippedRect padRes viewedRes seeled sceleFactor zoomFactor arrangement elderFirst resizability elderChild youngerChild - 1 - UABC Classes: Class fields TObject TProcess TDocDirectory TDocManager TClipboard TConmand TCutCopyConmand TPasteConmand Tlmage TView TPaginatedView TPageView THeading TPrintManager TSelection 'Area TWindow TDialogBox TBand TSideBand TPanel !Pad TPane TMarginPad TBodyPad TScroller TScrollBar THenuBar (deFined in Wbject) (global variables) window classWorld files dataSegment docHeap window pendingNote openedAsTool ' hasView hasPicture hasUniversalText haslcon cuttingTool cuttingProcessID clipCopy cmdNumber image undoable doing revelation unHiliteBefore hiliteAfter iSCut extentlRect view allowMouseOutside panel clickLPt printManager res screenPad fitPagesPerfectly isPrintable iSMainView stdScroll scrollPastEnd unpaginatedView pageSize workinglnMargins printManager pageAlignment offsetFromAlignment oddOnly evenOnly minPage maxPage view pageView breaks pageMargins headings canEditPages layoutDialogBox frameBody paperLRect printableLRect contentLRect printerMetrics pageRiseOirection . .. window panel view kind anchorLPt currLPt boundLRect coSelection canCrossPanels (defined in lLJr811) panels panel Tree dialogBox selectPanel undoSelPanel olickPanel undoClickPanel selectWindow undoSelWindow wmgrID isResizable believeWmgr maxlnnerSize changes lastCmd printerMetrics pgSzOK pgRgOK panelToPrint objectToFree keyResponse menuResponse downlnMainWindowResponse freeOnDismissal window panes panel scroller scrollOir topOrLeft window panes currentView view paginatedView selection undoSelection bands scrollBars abilities minlnnerOiagonal resizeBranch zoomed zoomFactor previewMode lastClick contentRect tlSideBandSize brSideBandSize deletedSplits (defined in tLJra,) currentView panel view pageNumber bodyPad marginPad nonNullBody scrollBar band sBoxID firstBox isVisible isLoaded mapping numMenus numCommands - 2 - UUnivText Classes: fields Class TlJbject (defined in Wbject) TTKUnivText paragraphDescriptor characterDescriptor maxOataSize data itsOurTString buffer columnCount dataBeforeTab TTKReadUnivText TTKWriteUnivText UT ext C I asses: Class fields TObject (defined in Wbject) TParaFormat dfltTStyle wordWrap quad firstlndent leftlndent right Indent spaceAbovePara spaceBelowPara lineSpacing tabs refCount permanent styleSheet TCollection TString (defined in Wbject) (defined in Wbject) TParagraph TEditPara TLinelnfo TIlIJ8ge TParalmage TTextl…

Apple Apple Li!:.a 2 Intrin~oic Lisa 2 Unit Interface!:o' Summary Tables Intrinsic Unit Inter-F.a.ces . .· Summar)-' Tables Prepared using the WorkShop 3.9 util ity tool IUManager UNITTABLB: UnitName Unit# File# Type DataSize PASL I B 1 3 In t roi n 000000 * UNITSTD 2 4 In tr i n 000002 GRAFUTIL 3 4 lntrin 000000 UNITH2 4 4 Shared 000024 STORAGE 5 4 Intrin 000008 QUICKDRA 6 4 Intrin 0000CE HL~INT 7 4 1 n tro in 000000 FEDEC 8 4 Intrin 000000 FONTMGR 9 4 Shared 000054 EVENTS 10 4 Shared 000210 1,~INDOllJS 11 4 Shared 0010F2 FOLDERS 12 4 Shared 00000A MENUS 13 4 Shared 00009C FLDUT 14 4 Intrin 000000 WMLSTD 15 4 Intrin 000018 loo~t1LCRS 16 4 Intrin 0003FE IAIMLGROIlJ 17 4 In tro in 00000E WMLSB 18 4 lntrin 000038 I NT ERNAT 19 4 1 n t roi n 000000 FPLIB 20 5 Intrin 000006 ALERTMGR 21 4 lntrin 000300 NATHLIB 22 5 Intrin 000016 UNITFF 23 4 Shared 00004A UNITCS 24 4 Shared 000644 UNITFILE 25 4 Shared 000156 UN I TFt1T 26 4 Sharoed 0001 F2 BGENV 27 8 Intrin 000058* t1ATt1GR 28 8 lntrin 00188E* 8 lntroin PARSER 29 0006FC* COt1PUTE 30 8 Intrin 000084* STUBS 31 8Introin 000000* UUNJI·.)ERS 4 Intrin 000222 8 Introin FEGLOBAL 33 000398* COMGR 34 8 Intrin 00033C* USTDTERt1 35 9 Intrin 0002CE 9 Introin UQPGRAPH 36 000056 --'7 ..:>, TEEXEC 8 Introin 000004* UQPPRINT 38 9 Intrin 000188 3)' 8 Introin LCFEXEC 0001A6* TEEN!oo) 40 6 Intrin 00080E Tt1 6 lntroin 41 000BCA 4 Introin Ft1GRUTI L 42 000000 Page - 1 Apple Lisa 2 Intrinsic Pt1t1 Pt'tDECL UNITFIGA SYS1LOCK UCLASCAL UTKUNI\..JE UOBJECT UTEXT UDRA'"J UABC UDIALOG LCUT IOPRH1IT SHELLCOt1 PROGCOt-1t1 RECO~}ERY Lm~LEVEL DBDECL1 POOLER DBENV HEAP ~}LTREE C2Cot1PAC LABSCAN SCHEt1A SCAN FIELDEDI SCRAP FI LERCOt1 PRPU8LIC PRSTDINF PRSTDPRO PRFILEPR PR8UF PRSPOOL QUEUES PRE')ENTS PRDLGt1GR PRt1GR U'v'T100 USOROC STDUNIT I Ut'lAN OBJIO FILEIO GRAPHS TREES REFS PARTS LISTS t1Et-1t1AN PASDEFS r'1PASLI8 Unit Interfaces'" 43 44 45 46 47 49 50 51 52 53 54 55 56 4 4 4 4 3 57 58 59 60 61 6'j k. 63 64 65 66 68 69 70 71 73 75 76 77 78 7'1 80 81 E:2 83 84 85 86 87 88 'i0 91 9'j .k. 94 95 96 97 98 9$' 100 101 11 1e 11 1e 19 11 6 12 12 12 6 6 6 6 4 6 6 6 6 6 6 4 4 4 ., " 4 7 7 7 7 7 ., " 7 7 9 9 12 1 1 1 1 1 1 1 1 1 2 Shar'ed Intrin Shar'ed In tr' n Intr n Intr n In tr' n Intr n Intr n Intrln Intr·in Intrin Intrin Shared Intrin Intrin Intrin Intr·in Intr'in Intrin Intrin Intrin Intr'in Intrin Intrin Intrin Intrin Shar'ed Shar'ed Intrin Shar'ed Intr'in Intr'in Intrin Intrin Intrin Intrin Intrin Intr'in Intrin Intr'in Intrin Intrin Intr'in Intrin Intrin Intr'in Intr'in Intr'in Intrin Intr'in Intr'in Intr'in Page - 2 Summary 000042 000000 00002A 000000 00004E* 0001 CA* 000164* 00027C* 000182* 0009F2* 000564* 00002C* 00057E 00070C 000006 000000 000126 000000 000052 000000 000000 000000 00001C 000000 000000 000000 0000CA 000250 0002E8 000000 0005D0 000002 000000 000010 000346 000000 000000 00008A 000026 00001C* 00001C* 000580 00008C 00011C 000000 000008 000000 000004 000004 000000 0000…

LANGUAGE SPECIFICATION LISA PASCAL 19 February 1982 Rich Page / David Cas seres {file pas:pO; date 2/19/82] [file pas:pO; date 2/19/82] DATE: 19 February 1982 TO: Lis t FROM: Rich Page & David Cas seres SUBJECT: Lisa Pascal Language Specification -----------------,------ Here is the new Language Specification for Lisa Pascal. direct your comments to Rich Page. Please ,This Language Specification attempts to describe both the eventual definition of the Language and the current implementation. Inevitably, there are a few places where the two do not match. and these points are spelled out in the text. {file pas:pO; date 2/19/82} [file pas:pO; date 2/19/82] CONTENTS 1. IN'!RODUCTION •••••••••• ~ ••••• 0 ••••••••••••••••••••••••••••• ••• 1 1.1 Product Name and Number ••••••••••••••••••••••••••••••••••• l 1.2 Related Documents •• ~ •••••••••••••••••••••••••••••••••••••• l 1.3 Novel or Unusual Features ••••••••••••••••••••••••••••••••• l 1.4 Relation to Other Products •••••••••••••••••••••••••••••••• 2 1.5 Use Environment ••••••••••••••••••••••••••••••••••••••••••• 2 1.5.1 Hardware Environment •••••••••••••••••••••••••••••••••• 2 1.5.2 Software Environment •••••••••••••••••••••••••••••••••• 2 2 DEFINITIONS ••••••••••••••••••••••••••••••••••••••••••••••••••• 3 3 METALA.NGUAGE •••••••••••••••••••••••••••••••••••••••••••••••••• 5 4 'LEXICAL TOKEN'S •••••••••••••••• 0 ••••••••••••••••••••••••••••••• 7 4.1 General ••••••••••••••••••••••••••••••••••••••••••••••••••• 7 4.2 Special Symbols ••••••••••••••••••••••••••••••••••••••••••• 7 4.3 Identifiers ••••••••••••••••••••••••••••••••••••••••••••••• 8 4.4 Directives •••••.•••••••••.•••••••••••••••••••••••••••.•.•• 8 4. 5 Numbe rs • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 8 4.6 Labels •••••••••••.•••.••••••••••••••••••...•••.••••••••••• 9 4.7 Quoted String Constants ••••••••••••••••••••••••••••••••••• 9 4.7 •. 1 Character Constants ••••••••••••••••••••••••••••••••.•• 10 4.8 Comments. Spaces. and Ends of Lines •••••••••••••••••••••• 10 5. BLOCKS. LOCALITY, AND SCOPE •••••••••••••••••••••••• ~ •••••••• 13 5. 1 Block. •••••••••••••••••••••••••••••••.••.•••••••••.••••.•• 13 5.2 Scope •••••••••••••••••••••••••••••••••••••••••••••••••••• 14 5.2.1 Defining Occurrence ••••••••••••••••••••••••••• : •••••• 14 5.2.2 Redefinition ••••••••••••••••••••••••••••••••••••••••• 14 5.2.3 Position of Defining Occurrence •••••••••••••••••••••• 15 6 CONSTANT-DEFINITIONS •••••••••••••••••• ~ •••••••••••••••••••••• 17 7 TyPE-DEFINITIONS ••••••••••••••••••••••••••••••••••••••••••••• 19 7.1 General •••••••••••••••••••••••••••••••••••••••••••••••••• 19 7.2 Simple-Types."•••••••••...••••••.•..••.•••••••.•.•.••.•••• 19 7.2.1 General •••••••••••••••••••••••••••••••••••••••••••••• l9 7.2.2 Standard Simple-Types •••••••••••••••••••••••••••••••• 20 7.2.3 Enumerated-Types ••••••••••••••••••••••••••••••••••••• 23 7.2.4 Subrange-Types ••••••••••••••••••••••••••••…

October 12, 1994 David T. Craig Dear David, Jt?A fkr 1~f fe' t,rl'ffrleJ ~clft#U~f{f(IP) •m0 FYI, I wrote about 80% of it, ~ 15%, and Bar:r 5%. Glenn and Barry worked for me, although neither was at Apple for long. Glenn left after 6 months at Apple to become VP Engineering at Grid, and Barry was only at Apple for a year before leaving to be VP Marketing at Grid. So they happened to be at Apple when I led the creation of the document but obviously were not around for very long before or after that time. Glenn had been at Xerox and was familiar with Datapoint's networking strategy, so his biggest contributions were in the discussion of network features and network architecture. Note that I did not refer to icons, because at that time it was not an established term. Instead I say, "intuitive icons" in quotations! Also note that there is some politics in the front end that is an attempt to rationalize a role for the Apple I I/, which was also in development at that time. In general you will see that most of the philosophy and product concepts in the MRD were adopted by Mac and eventually the PC. Regarding your report, it really brings back the memories! You overlooked.fat Marriott, who was Product Marketing_Manager in charge of the system software product management. ~was there for 3 years and left in the Fall of 1982 to work for me at Electronic Arts. Barry Smith joined Apple after her and his role expanded after she left. Another interesting character you left out is Jay W~(my memory is not perfect and I may !!Q! have exactly the right name or spelling of his last name), who had also been at Xerox and was a real font guru. He was essentially the font and printing product manager reporting to Pat Marriott. Also, there's Dave Evans, who was the Product Marketing Manager for peripherals. In particular, he initiated and coordinated the relationship with Canon for the first generation laserprinter and also made the original deal with Qume for the first letter quality printer. And of course he worried about the printing software issues also. Also, regarding the user interface,~ panie~ led the early investigation meetings and then Atkinson and Tessler did most of the real work of design and implementation. { Tes/tr(?} Trip Hawkins Chief Executive Officer The 3DO Company The 3DO Company 600 Galveston Drive, Redwood City, CA 94063 Phone: 415/261-3000 Fax: 415/261-3120 LISA M.'\RKETING REQUIRE."'1E~TS DOCUMENT APRIL 18, 1980 TRIP HAWKINS GLENN EDENS BARRY MARGERUM coNnDDmAL LISA MARKETING REQUIREMENTS DOCUMENT INDEX l EXECUTIVE SUMMARY •• , •••••••••••••••••••••••••••••••••••••••.•• , • • • • • • • • • . 1 2 PROJECT IDENTIFICATION ••••..••••••••••••••••••••••••••••••••••••••••••• , • 2 3 PRODUCT CONTRIBUTIONS ••••••••••••••••• , •••••••••••••••••••••••-.- • • • • • • • • • • 3 4 RELATIONSHIP TO OTHER APPLE PRODUCTS .••.••.•••••.••••...•••.. ~ •.••.•••••. 4 4.1 The Road To The Office Of The Future .•.•••....•....•.•.•••.•..•.....…

To: Rick Meyers From: George Cossey Date: June 22,1983 Subject: Evaluation of .diagnostic's hardware driver requirements. Hardware Interface for Lisa 1.75 me f ollow1ng interfaces are needed, for the diagnostics, from the hardware interface in tne Lisa 1. 75 ROM. overall, all routines that interface to the hardware 1111st have. safety t 1meout s in them to prevent endless hangs. The timeout error 11l1St also be reported to the caner. All oata area usea·oy the Haraware interface, for a scratch pad or to contain oata, rust reside in the Video memory. Tn1~ makes it able to handle a system without any meroory boards ana i~roves a1agnost1c capability, rne ·arivers rust be able to run entirely in viaeo rneroory, without ever using the ma1nmet00ry. There should be a way to reset the hardware 1nterface software/hardware. Unknown cnanges may occur auring a aiagnostic, and· to return to a known state a reset may be · necessary. ·· The timer chip. Timer 1to and 1t1 canoe assumea to be working,. this is one of the first tests done by the Boot ROM. . ·• r1ner ttO - Need a handler for thls t1mer,: allows· rTlll t1ple timeouts to oe set. Allows a previously set' timeout to be q~ryecJ for remaining time ana possibly deletion from tne timer queue. Neea a way to notify user program.that timeout nas expired, flag · resides in user program and rte passes yo~ 1t • s aaaress? · Timer.ill - For Floppy ariver. Timer ll2 - For Speaker ariver. Standard way to tall<: to--tt)e COPS. "This means a way to send data anq receive data . ' ' with a timeout option, to get around a hang conct1tion. Should be a way to talk to the COPS in a non-structured way, 1.e. not expect or send data in only speci fie formats. A structured way to talk to the COPS shOuld al so be available. A change to the current method would b~~ to have a timeout on rrultiple byte data streams. This will allow getting out 1f only part of a roou~e stream comes in, a tirreout error should occur. This would also handle if rultiple data is oeing sent, as in a date, and the COPS stops accepting data. Should be able to use the COPS in a'polled ioode or an interrupt roooe. 11 Need a handler for Speaker values, volUrre and frequency. This latch requires a shadow" to be kept in mennory. Need a handler for Contrast values. This latch requires a "shadow" to oe kept in reroory. · Astandard floppy driver, capable pf handling either the 871 or the Sony, using tne IWM chip. Primitive corrrnands ffLISt be allowed, with error trapping. High level cofTlllands should be available with error trapping. A built-in hard disk driver . ' The special diagnostic co1110ands in the disk drive oust be accessiable. Th1LS driver rust allow low level and hign level corrmands. AProfile hard disk driver, driving out of a parallel interface car.a. This driver rrust allow low level and lnigh level con11lands . standard MMU registier routines, for reading and for writing. Checksums in all ROt1s rrust be in a standard place in the…

A B C D E F G H I J 1 1 +5V 51K 1n + Z1 a LM339 4 C11 100n 1N914 2 2 R23 CR3 10K 1N914 C3 12 R19 CR5 51R - 2K@1% 1N914 CR6 +18V CR4 3 5 C10 R18 R21 499R@1% - 4K02@1% 2N4401 1N914 Current Sense R24 + 1u R33 5K1 Q3 5K1 + 1u CR7 1 R34 2 - +18V + Z3 a LM393 2K R27 1 C14 6 VR + Z1 b LM339 3 VR /Power Fail 4 R32 7 2K Brownout Limit A djust R26 2 750K 8 + 1u C12 6K2 R25 +18V R22 R20 +5V Line Sense +5V 6K19@1% +5 Sense /Delay Reset 1N914 3 +18V R29 4 6 R7 2N4401 5K1 2K49 Q2 10 VR R9 R6 11 1N914 R30 7 CR2 + Z1 d LM339 /Shutdown 13 - 4 - 51K R28 On/Off + Z3 b LM393 6K49 470R@1W R5 5 +5V Q1 2N4401 5K1 VR +18V 200K 10K R31 3 R16 15 Ac 12 11 Ae Push 13 Bc 14 Be Pull 6 P1 A B C 100n R15 8K25@1% R13 + 1u 1K2@1% 2.520 V VR 6 +18V On/Off + 1u +12 Out Line Sense C9 1 2 3 4 5 6 7 8 9 10 11 12 13 7 CT RT C5 Gnd 1K@1% EN SG3524 5 Logic +5 R14 R12 Z2 10 10K5 20K Comp 2 1 VSense+ VSense4 5 ISense+ ISense- 1N914 R37 VR C4 22n 4K87@1% 1n 3 OSC 16 Vref R17 +5 A djust R11 2K +5V 220p Vin 7 6 10K R10 2N5061 20K CR1 9 4n7 CR9 C13 C6 8 - +18V 51K C7 C8 8 100n VR 14 C2 1N914 + Z1 c LM339 R4 9 R3 +5 Sense CR8 5K1 R2 2K49@1% R1 R36 R35 5 1K21@1% 4K75@1% +12 Out 1K82@1% +18V +5 Sense +5 Sense Current Sense /Shutdown /Power Fail Pull Push Logic +5 /Delay Reset Variations Reported D E Rev Part C C7 = 1 0 0 p C7 = 1 n F Reverse Engineered from: A ssy. No. 9 9 P0 1 0 8 -0 0 0 Rev. C Part Numbers Skipped R8 C1 G Apple X/Lisa "DataPower" Power Supply 2 0 0 2 -0 1 -1 2 Sheet 2 of 2 Rev. B Drawn by: JDM Checked by: TS 7 Notes: 1. There are NO 4-way connections on this diagram 2. Leading slash indicates signal is active low 3. Send corrections to: bugs@SigmaSevenSystems.com 4. Use this drawing at your own risk H I J

COBOL User1s Guide for the Lisa'IM 029-0306-A LIcensing RE!(JJlrements for SOftware DeVelopers Apple has a low-cost lIcensing program, WhiCh permits developers of software for the Lisa to Incorporate Apple-developed libraries and Object COde fUes Into their prOdUCts. Both In-hOuse and external distribUtion require a Ucense. Before distribUting any prOdUcts that Incorporate Apple software, please contact SOftware Licensing at the address below for both licensIng and technIcal Information. @1983 by Apple Computer, Inc. 20525 MarIanI Avenue CUperUno, California 95014 (408) 996-1010 CUStomer satlSfaCtloo If you discover physical defects in the manuals distribUted with a Lisa product or in the media on which a software product is distributed, Apple will replace the documentation or media at no charge to you dUring the 90-day period after you purchased the product. ProWct Revisions Llnless you have purchased the prodUct update service available through your authorized Usa dealer.. Apple cannot guarantee that you wlll receive notice of a revision to the software described in this manual, even If you have returned a registration card receIved wIth the prOduct. You shoUld check perIodically with your authoriZed Usa dealer. Llmltatloo on Warrmtles cnj Llcmlllty All Implled warranties concernIng this manual and medIa, inclUding Implled warranties of merchantabll1ty and fitness for a particular purpose, are lImited In dUration to ninety (90) days from the date of origina~ retail purchase of thIs prOdUct. Even thOUgh Apple haS tested the software descrIbed In thIs manual and revIewed its contents, neither Apple nor Its software suppl1ers make any warranty or representation.. either express or Implled.. with respect to thIs manual or to the software desCrIbed In this manual, their quality, performance.. merchantabllity.. or fitness for any particular purpose. p.s a result, this software and manual are sold "as Is," and you the purchaser are assumIng the entire riSk as to their qualIty and performance. In no event will Apple or Its software suppliers be liable for dIrect, indIrect, speCial, Incidental, or consequential damages resulting from any defect In the software or manual, even If they have been adVised of the possIbility of suCh damages. In particular, they shall have no llability for any programs or data stored In or used wIth Apple prOdUcts, inclUdIng the costs of recovering or reprOdUcIng these programs or data The warranty and remedIes set forth abOve are exclusIve and In lIeu of all others, oral or wrItten, express or ImplIed. No Apple dealer, agent or employee Is authOrized to make any modIfication, extension or addition to this warranty. Some states do not allow the exclusion or limitation of impUed warranties OJ liability for incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state. iii …

United States Patent c191 [11) Baker et al. [45) [54) MEMORY MANAGEMENT UNIT WITH OVERLAPPING CONTROL FOR ACCESSING MAIN MEMORY OF A DIGITAL COMPUTER [75] Inventors: Paul A. Baker, Los Altos; Gary L Marten, Cupertino, both of Calif. [73] Assignee: Apple Computer, Inc., Cupertino, Calif. [21] Appl. No.: 933,071 [22) Filed: Dec. 17, 1986 Related U.S. Applicadon Data [63] [51] [52) [58) [56] Continuation of Ser. No. 426,869, Sep. 29, 1982, abandoned. Int. a.s ................................................ G06F 9/00 U.S. CL ................................. 364/200; 364/238.4; 364/246; 364/246.3; 364/246.4; 364/246.5; 364/245.4 Field of Search ................................ 364/200, 900 References Oted U.S. PATENT DOCUMENTS 3,828,327 8/1974 3,902,163 8/1975 4,004,278 1/1977 4,037,215 7/1977 4,084,224 4/1978 4,084,227 4/1978 4,084,228 4/1978 4,096,568 6/1978 4,104,718 8/1978 4,130,867 12/1978 4,297,743 10/1981 4,316,245 2/1982 4,354,225 10/1982 4,376,297 3/1983 4,378,591 3/1983 4,410,941 10/1983 4,424,561 1/1984 Berglund et al................. 340/172.5 Amdahl et al ................... 340/172.5 Nagashima ....................... 340/172.5 Birney et al........................ 364/200 Appell et al........................ 364/200 Bennett et al....................... 364/200 Dufond et al ....................... 364/200 Bennett et al....................... 364/200 Poublan et al...................... 364/200 Bachman et al .................... 364/200 Appell et al........................ 364/200 Luu et al............................. 364/200 Frieder et al....................... 364/200 Anderson et al ................... 364/200 Lemay ................................. 364/200 Barrow et al....................... 364/200 Stanley et al....................... 364/200 FOREIGN PATENT DOCUMENTS 0040702 2/1981 190324 12/1982 1413739 11/1975 1477977 6/1977 1487078 9/1977 1498116 1/1978 1547382 6/1979 European Pat. Off.. New Zealand . United Kingdom . United Kingdom . United Kingdom . United Kingdom . United Kingdom . Patent Number. Date of Patent: 1557121 12/1979 1577592 10/1980 1585960 3/1981 2073458 2/1984 4,926,316 May 15, 1990 United Kingdom . United Kingdom . United Kingdom . United Kingdom . OTHER PUBLICATIONS Wescon Conference Record, vol. 25, Sep. 1981, pp. 1-9, El Segundo, U.S.; S. Walters: "Memory Management Made Easy with the Z8000". Electronic Design. vol. 29, No. 17, Aug. 1981, pp. 115-121, Waseca, MN, U.S.; D. L. Collins et al.: "Memory Management Chip Masters Large Data Bases". Electronics International, vol. 54, No. 11, Jun. 1981, pp. 134-138, New York, U.S.; J. Beekmans et al.: "Chip Set Bestows Virtual Memory on 16-bit Minis". Primary &aminer-Gareth D. Shaw Assistant Examiner-John G. Mills Attomey, Agent, or Firm-Blakely, Sokoloff, Taylor & Zafman [57) ABSTRACT An improved memory management unit (MMU) for interfacing between a CPU and a main computer memory. The MMU receives logical addresses from the CPU and converts a portion o…