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R&D University PowerPC Runtime Arch itectu re PowerPC Runtime Architecture, October 14, 192 R&D University PowerPC Runtime Architecture •• • II • Itt t I Alan Lillich Developer Tools Group ( PowerPC Runtime Archttecture Version 1.1 .. _._-_. -" ... __._----- _.--_.___.-_.-___ - - - - _ .--_._. .. .. .. ... .. 1 Day 1 Content . . . .:' . . . . . . ': ....... :: .... ::. :.' · .. .. · .. . .. · ~.:. .... :.~ ::,:., ~':..~.\: . ... . : ~ 'C' :;::. ''- • ',' P_PC Runtime Archlectu.. Version 1.1 • '- • '- • '-'- R&D University Alan Lilich " Apple Confidential 11·10--112 2 2 Schedule for Today c . .. ....... . . First Day of Course a I lUlU urluan II I II UDDUDI I II r • Background Information • Program Components • Global Addressing • Stack Frames • Calling Conventions p""""pc Runtime Architecture Version 1.1 c R&D University Alan Lillich - Apple Confidential 11·1D--92 3 3 Background Information .' • Hardware Architecture - Review features that influence software architecture • Miscellaneous - Software architecture derived from AIX - Assembly programmers must do what compilers do! - We're only talking about 32-bit software • Special code can take advantage of 620 • No fully 64-bit O/S planned yet P ......rPC Runtime Architecture R&D Unive..iy Version 1.1 Alan LiNich " Apple Confidential 11-10-·92 4 4 ,. Background Information c' . .. .. Definitions • Effective Address: 3~b;-t-5 - The "register size" addresses used by PowerPC software. • Virtual Address: L '.1- '80 ~ - A "large" address used by PowerPC hardware during address translation. • Volatile Register: - A register whose contents need not be the same on return from a call as before. PowerPC Runtime Archftec:ture V.aion 1.1 R&D UnivelSiIy Alan UHich It Apple Confidential 11·10--92 5 5 CPU Architecture Key Instruction Set Features alia IIU II UIIUIIUI I I 11111111111111 "nann I I a I 1111111 1m III I II I I I • Three basic units => cheap branches • Typical load/store architecture • Generally three register operands • Fixed length instructions - Few memory addressing modes • 32 bit only PowerPC Runlime Architecture Version 1_1 R&D University Alan URich " Apple Confidential 11-10--92 6 6 CPU Architecture . Key Instruction Set Features , , II I I I II 1111 I • Lots of registers - 32 General Purpose (32/64 bit) - 32 Floating Point (64 bit) - 8 Condition Code "Fields" (4 bits: LT, GT, EQ, SO) • A large set of (mostly) reduced instructions • Effective Address versus Virtual Address PowerPC Runtime AR:hilectU18 Version 1.1 R&D University Alan LiRich II Apple Confidential 7 11-10--92 7 CPU Architecture .' . ~v-L*,o........ 5 • Unconditional Branches ~D'J... ~~ ~s - PC relative, 24-bit ~diate displacement (+32MBr • Conditional Branches - PC relative, 14-bit immediate displacement (+32KB) - Indirect through Link or Count Register • Displacements - Are signed and in words (inst…

FREEPORT S'JPPLEMENTAL DOCUMENTATION Decem~er, 1986 Introduction The documentation contained herein will cupplem~nl-Jf'1~i:l(f!~r: . . that you received earlier. All duplicate infonnation co~ iA ttus document should supercede all previous doeun,ents. The design of the Freeport is now stable. Changes bot.ween .PYT:2.· Lmits (thA units you received in early November) and producti0'1·UAiti: wiii tie minor and should not effect your product plans. You sh~u!d-ha'\jt~.r,\I reservations about committing to your designs from thi~ ·poin' ipil~ar d;: ~: ·_r;.:;·• .doc~Jmentation should accompany the final .pre-production. .pr~rtti.oG Freeport (Called a •pvr unit). ·· Changes between the various prototype levels (DVT1 , DY..Tf, -~nd PVT/Production) are all detailed in this document. Documentation Outline Th.· ·;e sections are replaced (from the early package):. ·oiffer~p~~f·;::: be1ween Freeport and Macintosh 512K, Macintosh Plus"·Cl.f1J.i;~t!1·:~l~i.;n updated and redistributed to different sections), •Expansion..·,P.n!t ~'mr.f.,~ic:;-t' diagram replaced (See amended and enhanced informatio.n. !:·f!IO~l); ~f~bl and ADB software specifications {specifications updated). This documentation packet includes the following sections: I. Rom Daugtherboards II. Changes between DVT1 and DVT2 prototypes Ill. Changes between DVT2 and PVT/Production units IV. New Expansion Features (of Freeport) - Description, Warranty Issues V. Custom Card Expansion - Features of the 96 piR: ~~·~:;:;t·~·: VI. Disk Drive Expansion - SCSI Hard Disks, SOOK Drives VII. Apple Desktop Bus - Input Device Bus VIII. Feature Changes From Previous Macintosh Syst~nts IX. General System Enhancements X. Power Budget Considerations XI. Heat Dissipation Guidelines,_, XII. Memory Map · XIII. System Timing Diagrams XIV. Mechanical Drawings "X>J. = dest SCSI Software Specification . XVI. :..cttest ADB Software Specification 12186 .i I. ROM daughterboarCls Enclosed with this docum~tiJiofl are a new set of.ROMS. Also included is a new System Tools disk. JlJ~.:RQtAs will work properly in your ~VT units only. The final Freeport systemw.iU, .lflip with 256K of ROM which will plug directly into the ROM sockets on th.l::Jogic board. Because EPROMs of this size are not readily available, we. hav~(Ovided you with a ROM daughterboard that holds four EPROMs. Tak•ft;t9Qether, the four EPROMs contain the ROM image of the final 256K FreeDOrt ROM. Since you may be developiflg;expansion card produds which might interfere with the ROM daughterboard, we have also provided you with a set of masked ROMs that are electrically and mechanically identical to the final ROM. However, these ROMs have many known bugs. They are provided for your convenience only~·· 12186 Apple Computer Confidential Page 2 II. Changes between first (DVT1) and second (DVT2) prototypes • Serial Ports are now Macintosh Plus compatible (This change was previously detailed in section 8 of the •Freeport Hardware Preliminary Notes"). • 96 Pin expa…

+ +20 + +40 + ve + 188 + +100 ¢ +126 + 149 + +160 +160 + 1200 ¢ v220 ° o ¢ r $ 3 CLK_12H_D4 CLK_18M DBUS BUS bs —————__ ti nm D152 G0) ees 3 — Power CikK-ienne q faster VaBUS @ Priam Disk DC15: ARR emts~ f Hioh-sPeed Connections SERRE NS PhaseLock Vac2at 043 exmmeeet erp acs~ 8 t eto cuxitann7 Ml oscitiators @ cuK_t2m dated PCC cies) LPU-READ @ Parallel CLK=12N_6 - jCRUREAD & = Port p PRPPLINTR {oe | HSPP_PARERR POWER_ETC 7? CPU_RESET~ PRPP_BTRE@ HSPP_RESET & HSPP_BUSY > CLK_GEN cl PRPP_PARERR HSPP_COMMAND & HSPP_CONCHK « Perzan0 i HSPP_10 je] peas:ea> ROUS pABUS vac23z01) a | S is cPu_u~_s DBUS : SCC_IRG~ s ° CPU_READ 0¢15: 00) FatuS ;_ bi cPu_uns~ Vacesretiscics~ q Serial HGT_ERR~ = Video VID-sRLOAD~ ae Ports cyai ipo. if Processor CPU=LDS~ Timing Dn curue mp¢siree> SEUSS -SCC_RD~ d viat_tre~ f CPU_ENABLE VID_EVEN~ éPu_Los~ & on VIA2—IRG~ and CPU_RESET~ and VID_HRCLK¢3: 03 wameRCLK LS p «APPleBus > ee Memory Timing poe Genlook VID_HBLANK~ viD_-CBLANK~ i Interface | VIAZ_IRQ & CLK_9M Cuan Uni ANI Vin spioaD~ #8 SccIROS and Tras Interface VID_VBLANK~ Video Se 10 Address SP VID_CBLANK~ Shifters? scc_uart~ 7 paig Decode RHM_RASG~ ane Output Map, : p_SCC-HAIT~ a S | RHM_CASe~ TT VEvHES and DvAs SERIAL_10 s 3 RHM_RASI~ VID-CSYHC™ < @ RuM_Casi~ a CLK_12n § RWH_BUSY~ TY-CONNECT~ Bus H pIRHH=DUSY=I pT —CONNECT™ BUS ! DC15208) semen ne ~ 288 @ RUN_cPUADR~ TWAENABLE © CLK_12M_p4 ¢15500) CAbUS vaceazo1; menue Floppy Disk RUM_RD~ eer vacea: 043 Samet Hin_cs~ IMBuS CLK_-12M_D6 jaP_AC~ i —rnatS~ § Interface + RHH_HR~ IM¢3: 8) oe CLE” WREPDoES DPHN_HE~ < RHM_DTACK~ arerien pn VHAP CSS CPU_UDS~ RWM_AcC~ ate SS CPU_LDS~ 4 TINING HAP HEX CPULRESET~ lo NGT—ACC~ CPU-READ § Se o 8 ROM_ACC~ VIDEO DISK_HD_SEL | cLKatt e E ~ 1 vnap_oe~ ROH CE pon _cE<3:0) venus Peanst FiLOPPY_10 Q vn _ue~ ¥AC23:01) —— panne PAC 19210) anne D¢15: 60) Soo Memory BUS VIAI_IRC~ * Nanagement D¢1518@> a « e Unit MDBUS vace3: a1) mes p VIABAIRG~ MD¢31100) ee Sound +10 rants~ VIA3_IRG~ MGT_ACC~ 4 MGT_ERR~ SND_VOLC2:@> SND_VOL Generator CPU_READ q Miscellaneous @usPP_cs~ RHH_ACC~ ~ SND_CNT~ SND_LOD~ CPULENABLE 170 Interface ° € PRPP_CS~ RUM_DTACK~ @ SND_RESET CPU_RESET~ g and 2 cux_on vip_uRcLK¢a:ey LIDAHRCLK | Rendoeletae POHER_UP CPU_READ > kKBD_ScLK its KBD_ACLK SND_RESET SND_OE~ cPU_Uv_s @ SOUND ~ J vnap_ac~ IN VID VID_WE~ pouer_ur vip_ever~ VHAP_OE~ Al “vin_Tse & cuxton f VIDVBLANK~ & SND_VOL. , VID-HBLANK~ @ SE FND-VOL<2:0> vo tv.connect~ I Dy ewan pn > VED CNT Bus MDBUS > TV_ENABLE~ © D¢153@0> Sateen HDC312 88> r ——— c) By SED SHRCLK. y1D_HRCLK¢320> Pagus =PRPP-INTR IMBUS be PACI9:10>/VAC9101) meee © Processor PRPP_BTREQ 1m¢37@> KBD_ACLK KBD_SCLK DBUS DABUS DAC16:01) === Read-Hrite PRPP_PARERR DISK_HD_SEL ee D158 0g? paeoremee DAC16201> Aree) ( eaeceee . ——— eo pouer_up CLK_18H_D6 Finer Video easere uspp_susy Ml HSPP_RESET CLK_18M { “VID.OE~ and "RHM_RASI~ HSPP_PARERR q HSPP_COMMAND + | SNDLOED sen “RUM_CASI~ HSPP_CONCHK moneetn « “DMAOE~ Ha arene -RUN_RD~ & Scchart~ B HOUSE_Y1 SEULDS~ …

Thu, Mar YaccEqu.Text on Mac onlisa on Yacc .EQU .EQU .EQU 16, 1989 11 :31 PM 0 0 '·----------------------------------------------------------------; System Constants ;----------------------------------------------------------------Physical Device Equates The YACC is a meg machine with memory management that aliorJs mapping of the memory into 1 kilobyte pages. There are 8 video p1anes which are 640*480 pi;.~eis in size. This is 37.5K of ram per plane; the 1K resolution of the pages force an allocation of 38K for each plane. The Video DMA system uses physical addresses 19 to 17 for the selection of the 8 planes, thus forcing the division of the physical 1 meg of memory into 8 128K partitions. There is a 16 bit register that is 1oaded with a physical address that points to the start of the frame buff er in each of the 8 p1anes. The Sound subsystem makes al 1 accesses from partition O, which has addresses 17, 18, and 19 = .(i. It ai so has a 16 bit register i·Jh ich points to the start of the sound buffer. The system rJi 11 fetch a 16 bit value at the start of video scan 1ine (15.734 KHz horizontal scan rate), of ~~hich the low 10 bits are used as input to a PWM c irwi t. The PvJM circuit di vi des the line into 585 cycies; a value of 585 or higher will turn on the sound for the entire i ine whi 1e a value of 0 rJi 11 turn off the sound for the 1ine. The Sound DMA system will continue to fetch successive words of data until a word is read that has bit 15 = 1, whereupon the circuit rJi 11 reset the starting -:.iddress to the int iai vai ue in the 16 bit register. The floppy disk PliJM circuit for speed control is two 8 bit registers/counters that are written in para1 lel. . When 16 bits are written, the lm:.s 8 bits are loaded into a PWM Low register and the high 8 bits are laoded into a PWM High register. The circuit provides Pulse Width Modulation and Pulse Frequency Modu1 at ion. Each register is fed into a counter that increments at an 8MHz rate until it reachs 255, ~·Jhereupon it hait and reload itself. The other registericounter is enabied and it folim&Js an identical process. The number of times that both counters increment is proportional to the square-wave frequency that is produced • ~Ji th a sum of counter increments equa 1 to 256, a square wave of frequency 31.25Khz is produced ( 1000/ \256* ( 1000000/BMHz))) • The vaiue in the PWM_Low register/counter divided by 256 is the proportion of the square ~-Jave that rJiii be 'low and the vaiue of Pl>JM_High divided by 256 is the proportion of time that will square wave will be high. The memory management hard~111are consists of 2K ;{ 16 of read/write registers. 8 megabytes can be mapped but only 1 megabyte can be mapped at any one time. Any 2 accesses that has the l ow 19 bits the same and the high 3 bits are different v4ill cause a memory translation error. To address 1 meg, bits 19-10 are provided by the MMU and 9-1 come directly from the address. The high 3 bits (22-20) are used b…

HeapDefs.Text Thu, Mar 16, 1987 11:09 PM Heaplefs - Definitions for Macintosh Assembly Language Memory Manager. Supports multiple heap zones with mixed relocatable and non-relocatable storage blocks. Reorganized from code designed and written by Bud Tribble, 27-Nov-81, and maintained and modified by Angeline Lo, Larry Kenyon, and Andy Hertzfeld. Modification History: 17 Feb 83 LAK added dfltStackSize for defltAppiLimit. 20 Mar 83° MPH changed memory size constants to support 512 K byte machine; added PtrMask and HandleMask to allow garbage in high byte of ptrs or handles passed to memory manager; removed "checking" conditional from ChkZone macro. 29 Mar 83 MPH added purgeFrec and moverelProc. entries to zone object. iG Jun 83) MPH Removed Definition of Nil, use Nil from GrafTypes. 17 Jun 83 MPH Removed moveRelProc from Heap object, inserted spare. 2i Jun 63 MPH Put FreeList code under assembly switch: FList. 18 Jul 83 LAK Removed FreeList stuff completely; removed TLock, TPurge; removed Trap macro and check hook offsets. for Flags byte: FNSelCompct ,FNoRvrAl loc ,FNSel Purge ,FRel AtEnd. 12 Aug 83° LAK Added ClearBit equate. ; These constants control conditional assembly. Checking +Equ Q ycheck arguments and data structures Statistics »Equ 6 ygather statistics on usage Robust »Equ 0 yenables super-robust internal checks CountHPs «Equ it) senables counting of master pointers DF tFlags sEqu 0 yChecking is on when zone is init’d H 3 Constants: HinFree »EGU 12 312 byte minimum block size TagMask »EQU #00000000 sMask for the 2-bit Tag Field BCOFfMask EOL SOF 000000 sMask for the 4 bit Byte Count offset BCMask »EQU $00FFFFFF yMask for the 24 bit Byte Count PtrMask »EQU SQ0FFFFFF jMask pointer to low 24 bits Hand] eMask »EQU FQOFFFFFF sMask handle to low 24 bits Freelag -EQU #0 slag for Free block NRel Tag »EGU $40000000 ylag for Non-Relocatable black RelTag »EQU $80000000 3Tag for Relocatable block MaxSize »EQU #800000 jMax data block size is 312K bytes Mindddre »EGU $0 3Min legal address MaxAddr »EBU S800000 yMax legal address for 512K machine MaxMasters »EGU $1000 sRidiculously large allocation chunk size dfl tasters »EQU 32 pDefault to 32 master pointers df] tStackSize EGU $00002000 38K size for stack anStackSize +EQU 00000400 31K minimum size for stack i H Block Types H t ybk Mask »ERU 3 yMask for block type 30 Jul 63 LAK Added equates for PurgePtr and AllocFtr. Aiso added equates HeapDets.Text tybkFree tybkNRel tybkRel Heap Zone ? BkLim PurgePtr HFstFree ZCBFree 62ZFroc MAT ocOnt Flags FOnCheck FChecking FGZAl ways FNGZResrv FN5el Compct FNoRvral loc FNGel Purge FRel AtEnd cntRel maxRel cntNRel maxNRel entEmpty cntHand]es minCBFree purgeProc sparel AllocPtr Heaplata MinZone ' 3 TagbC Handle BikData SysZoneSize AppZoneSize Structure StartPtr LimitFtr CMoreMasters -EQU EGU EGU Offsets: »EQU EGU EGU »EGU »EQU »EGU «EGU »EGU +EQU +EQU »EQU »EQU »EQU EGU »EQU »EQU »EQU »EQU »EGU »EGU «EGU »EGU »EQU EGU E…

ToolEqu.Text File TOOLEQU.TEXT Thu, Mar 16, 1989 11:24 PM 1 User Interface ToolBox Equate File This file contains global variable and data structure definitions for the MacIntosh User Interface ToolBox. It is included with all toolBox source files and possibly with some application programs. written by Andy Hertzfeid May 3, 1982 MODIFICATION HISTORY: AJH AJH AJH AJH AJH AJH AJH AJH AJH AJH BLH AJH BLH AJH AJH AJH BLH BLH AJH AJH AJH AJH AJH BLH AJH AJH AJH AJH AJH AJH BLH 8c 8c AJH AJH AJH AJH AJH AJH SC AJH 6C AJH ELH $C AJH 23-May-B2 22-Jun-82 27-Jun-82 3i-Jul-B2 10-Aug-82 29-Aug-82 06-Sep-82 12-Sep-82 14-Sep-82 20-Sep-82 24-Sep-82 05-Oct-82 7-Oct-82 12-ict-B2 14-Nov-82 21-Nov-82 i?-Dec-82 i9-Dec-B2 19-Dec-82 24-Dec-82 28-Dec-82 05-Jan-83 24-Jan-83 5-Feb-83 5-Feb-83 4-Feb-83 12-Feb-83 é-Mar-83 7-Mar-83 S-Apr-83 20-Apr-83 20-Apr-83 09-May-83 i0-May-d2 25-May-83 3i-May-B3 02-Jun-83 08-Jun-83 14-Jun-83 23-Jun-83 08-Jul-83 05-Aug-83 05-Aug-83 06-Aug-83 13-Aug-83 28-Aug-83 Added window stuff Added icon stuff Added menu stuff Added control stuff; changed menu data structures Got rid of scrapWindow Added UragPattern , 1ShapeHook to globals, dragMsg to controls Added growWindow message Got rid of Alert and Dialog Window; added fneDne, MinusQne Changed for new font manager fidded “goAway" boolean to windows; added symbolPtr globals Added alert, dialog globals and data structures Added ContriAction field to control data structure Added indirect globals--took main globals out of low mem Switched over to new font manager globals; gratport now 64 bytes Added TaskLock for desk manager LGlobais,GPortSize change for ROM 1.8 Changed Dialog, Resource constants and globals Changed names for Resource upheaval Added CurActive Curfeactive ,deskHook globals Made defProcs defHandies, other data structure changes Broke off resource type and Il defs into separate file moved global base to #E80; put dialog stuff at end replaced HICONLIST with MBARENABLE Removed alertWindow, UDialogWindow globals. Changed Dialog data .structure defs. added MicroSoft bytes, other changes globais for scaling font manager got rid of checkFlag, made curfiragAction 4 bytes Jong added GotStrike field for fontMgr (used byte from defSize) added scalelisable added GhostWindow field in MicroSoft giobals Changed alert and dialog templates. Removed AlertKind. Added journal stuff at end Added text edit defs, changed dialogs Added CloseOrnHook, FPAddress Added AppPacks table Changed size of grafFort for new QuickDraw, Added SyskesNane Changed PicScrap to theScrap Added AppParmHandie Added OSErrCode Removed systemKind (it’s now any negative number) Made it match the documentation New TE record Added WGIconMsg to window defProc messages Added ResErrProc at end of tool globals. Made LastMap a temporary filler. Dropped scrapinfo, thedcrap Changed AppleMark, CheckMark to final values ToolEqu.Text : Thu, Mar 16, 1989 11:24 PM AJH = 29-Aug-83 added…

GrafEqu.Text Thu, Mar 16, 1989 11:07 PM File GRAFEQU.TEXT - Macintosh graphics equates file. Written by Bud Tribble 26-May-81 All system graphic routines include this equate file. MODIFICATION HISTORY: i 5 : 3 i 3 BLT 2-Oct-ai For new LisaGraf 3 AJH 31-Oct-81 Moved variables down to make room for driver variables 3 alo 03-Feb-82 Lisagraf vars moved down to #800 for more system globals 3 AJH 06-Jul-82 Added stuff for ObscureCursor y LAK 26-Ju1-B2 Added JUPDATEFROC pointer to update event generator 3 LAK 05-Sep-82 Added MaxX and MaxY equates : AJH 15-Sep-82 Modified for new cursor interface 3; LAK 16-Oct-82 updated for 512 dots y AJH 20-Nov-82 added JournalFlag, font manager jump vectors 3 AJH 02-Jan-83 added Journal Hook 3 $C 21-Jan-83 font scaling/coupling stuff 3 $C 02-Jun-83 Added 3 vars for jerky cursors H §C 23-Jan-83 changed JournalHook to journal Ret 3 AJH 1i-Aug-83 added MScaleThresh, MScaleFactor y; LAR 13-Aug-83 changed above two to MicaleTbl, added NScaleQld 3 LAR 18-Aug-89 changed above two to CrsrThresh and CrsrQuad. H moved JCrsrTask here from Sysequ. ; LAK 20-Aug-83 Removed CrerGuad. 3 i ; System Constants 3 SCRNROWE EGU 640/8 MaxX EGU 640 Max EGU 44 SCRNBYTES EGU SCRNROWB#Max ¥ i : ; System Graphic Jump Vectors - Long pointers to H system routine entry points. 3 GRAFBEGIN EGU #800 ;GRAF GLOBAL AREA JHIDECURSOR EGU GRAFBEGIN J5HOWCURSOR »EGU JHIDECURSOR+4 JSHIELDCURSOR EGU JSHOWCURSOR+4 ASCRNADDR EGU JSHIELDCURSOR+4 ASCRNSIZE »ERU JSCRNADDR+4 JINITCRSR EGU JSCRNSIZE+4 JSETCRER EGU JINITCRSR+4 JCRSROBSCURE »EQU ASETCRSR+4 JUFDATEPROC »EGU ACRSROBSCURE+4 LGRAF JUMF EDU JUPDATEPROC+4 ;LAST VECTOR LOCATION : ; System Graphic variables : GRAF VAR EGU LGRAFIJUMF s5YSTEM GRAPHIC VARIABLE AREA SCRNBASE EGU GRAF VAR yPOINTER TO BASE OF SCREEN MTENF -EQU SCRNBASE+4 sPOINT, TEMPORARY MOUSE COORDS RawMouse «EGU NTEMP+4 ; Faw mouse coordinates (un-jerked) GrafEqu.Text MOUSE CRSRPIN CRSRRECT THECRSR CRSRADDR CRSRSAVE CRERVIS CRSRBUSY CRSRNEW CRSRCOUPLE CRSRSTATE CREROBSCURE CRERSCALE MouseMask Mouselffset Journal Flag JSwapFont JFontInfo Journal Ret CrsrThrash JCrsrTask -EQU »EGU »EGU »EGU EGU +EQU »EQU +EQU +EQU EGU +EQU »EQU »EQU »EQU EGU EGU EGU +EQU »EGU EGU «EGU ; NOTE -- JCrsrTask GRAFEND »EGU Thu, Mar RawMouse+4 MOUSE+4 CRSRPINtE CRSRRECT+S THECRSR+48 CRSRADDR+4 CRSRSAVE+44 CRSRVIS+1 CRERBUSY+1 CRSRNEW+ 1 CRSRCOUPLE+1 CRSRSTATE+2 CRSROBSCURE+1 CRSRSCALE+3 MouseMask +4 Mouselffset+4 Journal Flagt2 J5wapFont+4 JFontInfot4 Journal Retf+4 CrsrThresht2 CrsrThresh = must JCrsrTask+4 ié, 1987 9 14:07 PM ;POINT, MOUSE COORDS USED BY CURSOR 3RECT, CURSOR PIN LIMITS sRECT, CURSOR HIT RECTANGLE 348 BYTES. CURSOR DATA, MASK, HOTSPOT LONG, ADDR OF DATA UNDER CURSOR 316 LONGS, DATA UNDER CURSOR sBYTE, CURSOR VISIBLE FLAG sBYTE, CURSOR LOCK-DUT FLAG 3BYTE, CURSOR CHANGED FLAG yBYTE, CURSOR coupled flag ;WORD, FOR NESTED CURSOR CALLS ybyte semaphore for obscure cursor sbyte c…