MEM3EX CLC

1047	87B6	60				RTS
1048	87B7	A0	00		BMOVE	LDY	#0	;MOVE 1 BYT + VER
1049	87B9	B1	FE			LDA	($FE),Y
1050	87BB 91 FC					STA	($FC),Y
1051	87BD D1 FC					CMP	($FC),Y
1052	87BF F0 0B					BEQ	BRT
1053	87C1	AC 52 A6			BRTT	LDY	ERCNT	;INC ERCNT, DONT PASS FF
1054	87C4	C0	FF			CPY	#$FF
1055	87C6	F0	04			BEQ	*+6
1056	87C8	C8				INY
1057	87C9	8C	52	A6		STY	ERCNT
1058	87CC 60				BRT	RTS
1059	87CD C9 1D				S13B	CMP #$1D		;SAVE KIM FMT TAPE, 3 PARMS
1060	87CF D0 15					BNE	S23B
1061	87D1	A0	00			LDY	#$0	;MODE = KIM
1062	87D3	AD 4E A6			S13C	LDA	P1L
1063	87D6	D0	02			BNE	*+4	;ID MUST NOT = 0
1064	87D8	38				SEC
1065	87D9	60				RTS
1066	87DA C9 FF					CMP #$FF		;ID MUST NOT = FF
1067	87DC D0 02					BNE	*+4
1068	87DE 38				S1NG	SEC
1069	87DF 60					RTS
1070	87E0	20	93	82		JSR INCP3		;USE END ADDR + 1
1071	87E3	4C	87	8E		JMP	SENTRY
1072	87E6	C9	1E		S23B	CMP	#$1E	;SAVE HS FMT TAPE, 3 PARMS
1073	87E8	D0	04			BNE	L23P
1074	87EA A0 80					LDY	#$80	;MODE = HS
1075	87EC D0 E5					BNE	S13C	;(ALWAYS)
1076	87EE C9 13				L23P	CMP	#$13	;LOAD HS, 3 PARMS
1077	87F0	D0	0F			BNE	MEM3
1078	87F2	AD 4E A6				LDA	P1L
1079	87F5	C9	FF			CMP	#$FF	;ID MUST BE FF
1080	87F7	D0	E5			BNE	S1NG	;ERROR RETURN
1081	87F9	20	93	82		JSR	INCP3	;USE END ADDR + 1
1082	87FC A0 80					LDY	#$80	;MODE = HS
1083	87FE 4C 78 8C					JMP	LENTRY
1084	8801	C9	4D		MEM3	CMP	#'M'	;MEM 3 SEARCH - BYTE
1085	8803	D0	22			BNE	CALC3
1086	8805	20	9C	82		JSR	P2SCR
1087	8808	AD 4E A6			MEM3C	LDA	P1L
1088	880B	A0	00			LDY	#0
1089	880D	D1	FE			CMP	($FE),Y
1090	880F	F0	0B			BEQ	MEM3E	;FOUND SEARCH BYTE?
1091	8811	20	B2	82	MEM3D	JSR	INCCMP	;NO, INC BUFFER ADDR
1092	8814	70	04			BVS	MEM3EX
1093	8816	F0	F0			BEQ	MEM3C
1094	8818	90	EE			BCC	MEM3C
1095	881A	18			MEM3EX CLC
1096	881B	60				RTS		;SEARCHED TO BOUND
1097	881C	20	17	85	MEM3E	JSR	NEWLOC	;FOUND SEARCH BYTE
1098	881F	90	05			BCC	MEM3F
1099	8821	C9	47			CMP	#'G'	;ENTERED G?
1100	8823	F0	EC			BEQ	MEM3D
1101	8825	38				SEC
1102	8826	60			MEM3F	RTS
1103	8827	C9	43		CALC3	CMP #'C'		;CALCULATE, 1, 2 OR 3 PARMS
1104	8829	D0	26			BNE EXE3		;RESULT = P1+P2+P3
1105	882B	20	4D	83	C1	JSR	CRLF
1106	882E	20	42	83		JSR	SPACE
1107	8831	18				CLC
1108	8832	AD 4E A6				LDA	P1L

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 MEM3EX CLC

Models: II

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II specifications