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Apple II manual LDA END+1 CMP with END

Models: II

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3070	F692	A5	E6		LDA	END+1	;CMP WITH END
3071	F694	CD 1D A4			CMP	ADDR+1
3072	F697	F0	11		BEQ	EDI7
3073	F699	B0	13		BCS	EDI8
3074	F69B 20 BC F8			EDI6	JSR	TOPNO	;RESTORE NOWLN
3075	F69E A9 00				LDA	#0
3076	F6A0 91 DF				STA	(NOWLN),Y	;END OF TEXT MARKER
3077	F6A2 20 13 EA				JSR	CRLOW
3078	F6A5 A9 52				LDA	#'R'	;FORCE READ COMMAND
3079	F6A7 4C 8D FA				JMP	ENTRY
3080	F6AA A5 E5			EDI7	LDA	END	;IF ZERO MEM IS OKAY
3081	F6AC F0 ED				BEQ	EDI6
3082	F6AE A9 00			EDI8	LDA	#0
3083	F6B0 8D 1C A4				STA	ADDR
3084	F6B3 4C 33 EB				JMP MEMERR		;NO MEMORY FOR THOSE LIMITS
3085	F6B6
3086	F6B6 A0 00			EDI	LDY	#0	;CHCK IF MEMORY WRITES
3087	F6B8 20 B7 FE				JSR	PATCH6	;GET BYTE ADDR BY ADDR,ADDR+1
3088	F6BB 48				PHA		;SAVE IT
3089	F6BC A9 AA				LDA	#$AA	;SET THIS PATTERN
3090	F6BE 20 78 EB				JSR	SADDR	;CHCK IT
3091	F6C1 D0 09				BNE	EDI2B
3092	F6C3 68				PLA
3093	F6C4 20 78 EB				JSR SADDR		;RESTORE CHR
3094	F6C7 EE 1D A4				INC ADDR+1		;NEXT PAG
3095	F6CA 18				CLC		;IT WROTE
3096	F6CB 60				RTS
3097	F6CC 38			EDI2B	SEC		;DIDNT WRITE
3098	F6CD 68				PLA
3099	F6CE 60				RTS
3100	F6CF
3101	F6CF			;*** T COMMAND-REENTRY EDITOR ***
3102	F6CF			;RE-ENTRY POINT,TEXT ALREADY THERE
3103	F6CF 20 24 EA			REENTR JSR CRCK			;<CR> IF PRI ON
3104	F6D2 20 BC F8			TP	JSR TOPNO		;GO TO TOP
3105	F6D5 4C B9 F7				JMP IN03A		;DISPLAY LINE
3106	F6D8
3107	F6D8			;*** U COMMAND-UP LINE ***
3108	F6D8			;GO UP ONE		LINE BUT...
3109	F6D8			;DOWN IN ADDRESSING MEMORY
3110	F6D8 20 DB F8			DNNO	JSR ATTOP		;THIS RTN DOESNT PRINT
3111	F6DB 90 06				BCC DOW1		;NOT TOP
3112	F6DD 20 27 F7				JSR PLNE		;ARE AT TOP
3113	F6E0 4C 78 FA				JMP	ERR0
3114	F6E3 A0 00			DOW1	LDY	#0
3115	F6E5 20 1D F9				JSR	SUB	;DECREMENT NOWLN PAST <CR>
3116	F6E8 20 1D F9			DOW2	JSR	SUB
3117	F6EB 20 DB F8				JSR	ATTOP
3118	F6EE B0 30				BCS	UP4
3119	F6F0 B1 DF				LDA	(NOWLN),Y
3120	F6F2 C9 0D				CMP	#CR
3121	F6F4 D0 F2				BNE	DOW2
3122	F6F6 4C 28 F9				JMP	AD1
3123	F6F9
3124	F6F9			;*** D COMMAND-DOWN LINE ***
3125	F6F9			;GO DOWN ONE LINE BUT...
3126	F6F9			;UP IN ADDRESSING MEMORY
3127	F6F9 20 09 F7			UP	JSR	UPNO
3128	F6FC 20 27 F7				JSR	PLNE	;DISPLAY LINE & CHCK BOTTOM
3129	F6FF 20 E9 F8				JSR	ATBOT
3130	F702	90 1C			BCC	UP4
3131	F704	A0 72			LDY	#EMSG2-M1	;PRINT "END"

Image 191

Apple II manual LDA END+1 CMP with END

Contents

Apple II Original ROM Information Qjjj Data0005A0 FDA9A920 EDFDA98D 4CEDFDA9 8D4CEDFD Page Page Page JI@ Page 001AE0 E8EEE7E8 Efefeeef Eeefeeee Efeeeeee 001AA0 F3FFE8E1 E8E8EFEB FFFFE0FF Ffefeeef001AC0 FFFFE1E1 EFEEE7E8 EEE7F3FB FBEEE1EF 001DB0 9CDD9CDE DD9EC3DD Cfcacdcb 00479AAD 001FB0 Ffffffff FFFF2071 E14CBFEF 2003EEA9 Page 60FFFFFF .JJ DDBAF9F0 0DBDBAF9FA60FFFF 02E61FBD JJJAEAEA8AD Page Page Return Page Basl System Monitor CopyrightLOC0 LOC1Mask INY NO, INC Index X-COORD LDY PCH PRMN1 LDA FMT1 DFB Format Above EOR STA A3H FAE2 A2 FB Tabv STA Vtabs to ROW in A-REG STA Bash BCC Clreol Clear to END of Line NXTA4 INC A4L Incr 2-BYTE A4 STA BASL,Y Replace Flashing Screen Fdad A5 3C LT2 LDA A2L,X Copy A2 2 Bytes to Ioprt LDA A2L SET RAM IN/OUT Vectors BCC RD3 Loop Until Done STA A3H,X DFB LIST-1 FFF3 CC BRTBL,X SaveLSR Prepare Carry for BC, BNC Stat LDA R0L JSR STAT2 Push LOW PC Byte VIA R12 JSR LDA IN,YCMP BNE NomoveRTN MloopDCR BNZ MloopBM1 INRBNC BNZLoad DOUBLE-BYTE Indirect ExampleLoad Indirect Store IndirectStore POP Indirect Store DOUBLE-BYTE IndirectPOP Indirect POP DOUBLE-BYTE Indirect ACCSubtract BNC LOOP1 CompareBF A0 SET $A0BF LOOP1 SUBBNZ LOOP2 Return to 6502 ModeDecrement LOOP2LOOP3 SUB Branch if no CarryBranch if Carry SET Branch if PlusReturn from Sweet 16 Subroutine Branch if Minus ONEBranch if not Minus ONE BreakSTA IND JMP LDA #ADRHSTA IND+1 LDA OPTBL,X Page Page Sweet 16 Introduction Page Source NVA DSPPrint Dbload Sweet REM Ctrl D Input Enter String a $ , a $Sweet Poke 776 , a REM Poke DestinationPrint Print Goto Call -605 Return REM XAM8 in MonitorMnemr MINI-ASSEMBLERBaum MnemlSBC PCL Form ADDR-PC-2 JSR Cout Position FORM7 STX A1H Save Index BNE ORGCLC STANorm LDA EXP1 ZERO? Shift Dividend Left Floating Point Representation LOW Floating Point PackageNumber Exponent Mantissa StoredHigh LOW EXP Mantissa Floating Point Representation ExamplesFloating Point Subroutine Descriptions Page Page Page Page HIGH-ORDER STY Init MANT1 LDYSTY Calling SequencePage Page Page Page Page Page Fsub SeeeeeeeMmmmmmmm ORG SET Base page Adresses STA X2,X Common LOG of MANT/EXP1 Result in MANT/EXP1 Ovflw BRK Overflow 1EBB STA X2,X Load EXP/MANT2 with Z 1EBD DEX 1EBE BPL LF3 Addend YES,RETURN with MANT1 NormalizedRight Shift MANT1 or Swap with MANT2 on Carry CMPNormx BCC Norm If EXEN, Normalize PRODUCT, Else Complement LDA STA Errata for Rankins Floating Point RoutinesLDX Load X for High Byte of Exponent Fmul LOGFadd FsubPage Mantissa MOD 9/76 Load X for Later M2MHL Contin 1EAD LFA LDA Z,X L2E DCM Normx RTLOG1Mdend Object Code Dump Page Lstcom TapdelHsbdry Toutfl=UIRQVC OutvecUrcvec =UBRKVCADC TAXStocom STA ORABPL HASHUS+2 Restore Except A,F JMP BEQSTX CPXTXA Exwrap RTSChksad PHP Outxah PHANibasc and #$0F Nibble in a to Ascii in a BCS INST1 RTI Ldbyte JSR Inbyte Verify MEM E1PARM JMP STD2 MORED2 LDY JSR Brtt INC Ercnt UP to FF MEM3EX CLC SBC P3L BNE Exitgk Ksconf LDA Txtmov LDA BNE INRT2 Outone Newdev LDA Dftxfr LDXLDA Toutfl 8BFF 0D Msfirst LOADT2 BufadhDdrdig STA Mode BNE Lcerr Last Char not Kgettr LDA H8DFF BCC PACKT3 DUMPT4 LDY DumptDUMPT1 TXA DMPT1A LDAOutbth LDX Outcht STX Register Name PatchHS Tape Boundary Nowln Rockwell InternationalUdrah UddraTMASK1 =MOVAD OldlenLength MovadTABUF2 CurposChecksum TabuffWrite Edge Detect Control not Used Because KB EQS CRBCFD2A0A0A0A0 DB TO,EQSSEI Disable Interrupt RS6 JSR Crlow Clear Display E1AC Have Valid Command Space Comm Nxtadd TYALOAD1A LDA ForLOADK5 LDX JMP LOADK5 Next E46A EE INC Bkflg SET FLG OUTCK1 PHA Outcks LDADUMPT1 LDA Dumpta LDXE5EA TOGTA1 LDA TOGTA2 LDA BCC JD3 MSG Whereo LDY CPY ANY OtherSTA Outflg Outall PHA Output PHAROL Priflg Restore FLG Wrax JSR Numa EAA3 CA DEX Memerr JSR STA STIY+2 Dehalf LDA EC5E 4A LSR Only ROW Debkey LDX Onekey LDAED3B GET a Char from Tape Subroutine Edba LSR Cpiy Make Room for MSB Outtty PHA OUTDD1 PHA OUTD1A CPXOUTD2A TXA LDA First Chip Select Prndot LDA LDA #PRTIME/256 Start T2 for 1.7 Msec BIT Imask See if DOT is SET Newcol LDA NEW Print ROWBkcksm LDA Ckbuff LDAOUTTA2 LDX OUTTA1 PHAZero Leftmost Column F2E1 3E7E7F3E7F7FCOL0DB BGYU76HN MNNDX2 LSR RtmodeGetfmt TAX MNNDX1 LSRPRADR4 DEX PRADR2 LDAPLA BPL PCADJ4 AIM Text Editor LDA END+1 CMP with END AF E7 JMP KEP RUB COMMAND-FIND String JMP CHN1 See if WE RAN Past END of Buffer Limit BEQ REP2 SBC Oldlen GOGO1 RTS Startm JSR ROM TableFB46 8A9AAABACADA Rdaddr LDY IMMED1 LDX Tryjmp LDAConvrt LDA OPCMP1 LDABrnchc JMP Compbr LDX FORMD2 LDXBrcomp LDA Forwrd LDA Backwd LDACuread TXA MATCH1 JMPPATCH4 LDX CURPO2 Dont do Anything if 8D PATC15 JSR Crlf Decode Command Brcomp AddblkADDS1A BkcksmCRA Goerr Namo E8CF NAMO1 RD2 EA5D RD1 E6AC AIM 65 Microcomputer Monitor Program ListingIntroduction Table of ContentsAIM 65 Microcomputer Basic Language Reference Manual WIDTH? Installing Basic in the AIM ROM Installation ProcedureEntering Basic Memory SIZE?Printer Control Exiting BasicReentering Basic Basic CursorCHR$ Getting Started with Basic Basic Command SETASC Listing a Program Direct and Indirect Commands Direct CommandsIndirect Commands Operating on Programs and LinesList Printing Data Deleting a LineReplacing a Line Deleting a ProgramNumber Output Format Print ONE Half Equals 1/2Number Format Variable Names Variables Assigning Variables with AN Input StatementInput R Reserved Words PSTG$Print A, A*2 LET Z=7 Print Z, Z-A Input B Program Using RelationsRemarks Relational TestsPrint Nsqrn LoopingSquare Root Program AN Improved Square Root ProgramSome Other Looping Operations Another Square Root ProgramPrint Nsqrn Next N COUNT-BACKWARD ProgramSort Program Print What is the NumberPrint I,J Next Next J Matrix OperationsStopping a Program Print BAD GUESS, TRY Again RestoreInput N Print Must be IntegerPrint LENA$,LENMICROCOMPUTER Strings$=ROCKWELL R6500 Print A$ Rockwell R6500 LEN FunctionMID$ Function RIGHT$ FunctionData AIM 65,DOG Print B$ Basic for Rockwell R6500Print C$ Basic FOR-ROCKWELL-R6500 VAL and Strs Functions CHR$ FunctionPrint Print X$ Additional String ConsiderationsName Example PURPOSE/USE DIM Input Input X$Print X/1.3 Operators Symbol Sample StatementESC Cntl PrintRelational Operators Symbol Sample Statement PURPOSE/USENegation Operator Argument Result Not Not If not Q3 thenStatement SYNTAX/FUNCTION Example Clear CommandsPrint Intruder Alert AlertStatement SYNTAX/FUNCTION NEW Statement SYNTAX/FUNCTION FREStatement SYNTAX/FUNCTION List Statement SYNTAX/FUNCTION LoadStatement SYNTAX/FUNCTION Example DEF Statement SYNTAX/FUNCTION Example RUNStatement SYNTAX/FUNCTION Example Save Program StatementsStatement SYNTAX/FUNCTION For Statement SYNTAX/FUNCTION DIMStatement SYNTAX/FUNCTION END Statement SYNTAX/FUNCTION IF...THEN Statement SYNTAX/FUNCTION GosubStatement SYNTAX/FUNCTION Goto Statement SYNTAX/FUNCTION IF...GOTOStatement SYNTAX/FUNCTION ON...GOSUB If X0 then Print ERROR, X Negative Goto ExampleStatement SYNTAX/FUNCTION LET Statement SYNTAX/FUNCTION NextStatement SYNTAX/FUNCTION Return Statement SYNTAX/FUNCTION RestoreSymbol SYNTAX/FUNCTION Wait Example Restore ReturnPrint Value ISA Statement SYNTAX/FUNCTION InputStatement SYNTAX/FUNCTION POS Statement SYNTAX/FUNCTION PrintString Functions Statement SYNTAX/FUNCTION ASC Statement SYNTAX/FUNCTION ReadStatement SYNTAX/FUNCTION SPC Statement SYNTAX/FUNCTION TABStatement SYNTAX/FUNCTION RIGHT$ Statement SYNTAX/FUNCTION LEFT$Statement SYNTAX/FUNCTION LEN Statement SYNTAX/FUNCTION MID$Statement SYNTAX/FUNCTION EXP Arithmetic Functions Statement SYNTAX/FUNCTION ABSStatement SYNTAX/FUNCTION ATN Statement SYNTAX/FUNCTION COSPrint Sinx Statement SYNTAX/FUNCTION Example SGNPrint Sgnx Statement SYNTAX/FUNCTION Example SINInverse Hyperbolic Secant Error Messages?XX Error PRINTX,Y,Z TAB, SPCSpace Hints Speed Hints Storage Allocation InformationOLD This is Probably the Most Important Speed HintConverting Basic Programs not Written for AIM 65 Basic OLD AIMSOH Assembly Language SubroutinesAscii Character Codes Decimal NULPrintx Address Content$AE InputnumbernStoring AIM 65 Basic Programs on Cassette Recording on Cassette Using the Basic Save CommandRUN NUMBER? IN= Cassette Operations Using the AIM 65 EditorOUT=T F= OUT=T F=FNAME T=0FAC ATN ImplementationEntered by Alter Memory M OF9CSaving ATN Object Code on Cassette WIDTH? Bytes Free AIM 65 Basic