Db To,Eqs, CFD2A0A0A0A0 | Apple II manual

0305	E000	46524F4DBD				M1	.DB "FROM",EQS
0306	E005	54	4F	BD		M3	.DB "TO",EQS
0307	E008	202A2A2A2A20M4					.DB " **** PS AA XX YY S",$D3
0307	E00E	50532041412058582059592053D3
0308	E01C 4D4F5245BF					M5	.DB "MORE",$BF
0309	E021	4F	4E	A0		M6	.DB "ON",$A0	;"ON "
0310	E024	4F	46	C6		M7	.DB "OF",$C6	;"OFF"
0311	E027	42	52	CB		M8	.DB "BR",$CB	;"BRK"
0312	E02A 49 4E BD					M9	.DB "IN",EQS
0313	E02D 4F 55 54 BD					M10	.DB "OUT",EQS
0314	E031	204D454D2046M11					.DB " MEM FAIL",$A0
0314	E037	41494CA0
0315	E03B 205052494E54M12						.DB " PRINTER DOW",$CE
0315	E041	455220444F57CE
0316	E048	2053524348				TMSG0	.DB " SRCH"
0317	E04D 20 46 BD					TMSG1	.DB " F",EQS
0318	E050	54	BD			TMSG2	.DB "T",EQS
0319	E052	A0	C5	D2	D2	TMSG3	.DB $A0,$C5,$D2,$D2 ;PRINT " ERROR" ,MSB=1
0320	E056	CFD2A0A0A0A0					.DB $CF,$D2,$A0,$A0,$A0,$A0,$A0,$A0,";"
0320	E05C	A0A03B
0321	E05F 41 BD					TMSG5	.DB "A",EQS
0322	E061	424C4B3DA0				TMSG6	.DB "BLK=",$A0
0323	E066	A0CCCFC1C43BTMSG7					.DB $A0,$CC,$CF,$C1,$C4,";"
0324	E06C 454449544FD2EMSG1						.DB "EDITO",$D2 ;EDITOR MESSAGES
0325	E072	45	4E	C4		EMSG2	.DB "EN",$C4
0326	E075
0327	E075					;VECTORS COME HERE FIRST AFTER JUMP THRU FFFA-FFFF
0328	E075	6C	02	A4		NMIV1	JMP (NMIV2)	;NMIV2 IS A VECTOR TO NMIV3
0329	E078	6C	04	A4		IRQV1	JMP (IRQV2)	;IRQV2 IS A VECTOR TO IRQV3
0330	E07B
0331	E07B					;SINGLE STEP ENTRY POINT (NMI)
0332	E07B 8D 21 A4					NMIV3	STA SAVA	;SAVE ACCUM
0333	E07E 68						PLA
0334	E07F 8D 20 A4						STA SAVPS	;SAVE PROCESSOR STATUS
0335	E082	D8					CLD
0336	E083	8E	22	A4			STX SAVX	;SAVE X
0337	E086	8C	23	A4			STY SAVY
0338	E089	68					PLA
0339	E08A 8D 25 A4						STA SAVPC	;PROGRAM COUNTER
0340	E08D 68						PLA
0341	E08E 8D 26 A4						STA SAVPC+1
0342	E091	BA					TSX	;GET STACK PTR & SAVE IT
0343	E092	8E	24	A4			STX SAVS
0344	E095					;TRACE	THE ADDRESS
0345	E095	AC 14 A4					LDY HISTP	;GET POINTER TO HISTORY STACK
0346	E098	AD 26 A4					LDA SAVPC+1	;SAVE HALT ADDR IN HISTORY STACK
0347	E09B 99 2E A4						STA HIST,Y
0348	E09E AD 25 A4						LDA SAVPC
0349	E0A1 99 2F A4						STA HIST+1,Y
0350	E0A4 20 88 E6						JSR NHIS	;UPDATE POINTER
0351	E0A7 AD 10 A4						LDA BKFLG	;SOFT BREAKS ON?
0352	E0AA F0 08						BEQ NMI5	;NO ,DONT CHCK BRKPOINT LIST
0353	E0AC 20 6B E7						JSR CKB	;CHECK BREAKPOINT LIST
0354	E0AF 90 03						BCC NMI5	;DID NOT HIT BREAKPOINT
0355	E0B1 4C 7F E1					NMI4	JMP IRQ2	;HIT A BREAK-TRAP TO MONITOR
0356	E0B4 20 90 E7					NMI5	JSR DONE	;COUNT =0 ?
0357	E0B7 F0 F8						BEQ NMI4	;YES,TRAP TO MONITOR
0358	E0B9 20 07 E9						JSR RCHEK	;CHK IF HE WANTS TO INTERR
0359	E0BC 4C 6D E2						JMP GOBK	;NOT DONE-RESUME EXECUTION
0360	E0BF
0361	E0BF					;POWER	UP AND RESET ENTRY POINT (RST TRANSFERS HERE)
0362	E0BF D8					RSET	CLD	;CLEAR DEC MODE

II specifications

The Apple II, launched in April 1977, was one of the first highly successful mass-produced microcomputer products. It marked a significant leap in personal computing, setting standards for future developments in the industry. Created by Steve Wozniak and Steve Jobs, the Apple II differentiated itself with its user-friendly design, appealing aesthetics, and robust capabilities.

One of the standout features of the Apple II was its open architecture, which allowed users to expand and enhance the computer's functionality. This design enabled hundreds of third-party hardware and software developers to contribute to its ecosystem, resulting in an array of peripherals, including printers, modems, and storage devices. The Apple II utilized a MOS Technology 6502 microprocessor running at a clock speed of 1 MHz. Initially equipped with 4 KB of RAM, the machine could be expanded to 48 KB, accommodating more complex applications and programs.

The Apple II was also notable for its colorful graphics. It was one of the first computers to support color display, offering a 6-color palette with a resolution of 280x192 pixels in 16 colors when using its Color Graphics Card. This feature significantly enhanced the visual appeal of games and educational software developed for the platform, making computing more accessible and entertaining for various audiences.

Apple's commitment to user experience was evident in the design of the machine. It featured an integrated keyboard and a plastic case, which was both durable and visually appealing. The self-contained design included drive bays for floppy disk drives, allowing for quicker data access than traditional tape drives. It also supported audio output, enabling sound effects and music, a novelty at the time.

The introduction of the Apple DOS operating system further underscored the machine's capabilities. DOS streamlined file management and made it easier for users to navigate and manage their data. The combination of hardware and software positioned the Apple II as an educational tool and a gaming platform, fostering a vibrant software ecosystem.

The Apple II family continued to evolve, with variations like the Apple II+, IIe, and IIgs being introduced over the years. These iterations brought enhancements in memory, processing power, and graphics capabilities. The legacy of the Apple II endures, not only as a foundational product in personal computing but also as a symbol of innovation that paved the way for future advancements in technology. Its impact is still felt today, as it inspired countless developers and shaped the trajectory of the computer industry.

Apple II manual Db To,Eqs, CFD2A0A0A0A0

Models: II

.DB "TO",EQS

TMSG3

CFD2A0A0A0A0

II specifications