PATCH4 LDX CURPO2 Dont do Anything if 8D

4035	FE9C AE 15 A4	PATCH4 LDX		CURPO2	;DONT DO ANYTHING IF "8D"
4036	FE9F C9 8D		CMP	#CR+$80	;SO <CR> FOR TV & NOT FOR DISP
4037	FEA1 D0 0B		BNE	PAT4A
4038	FEA3 A9 A0		LDA	#' '+$80	;CLR CURSOR
4039	FEA5 20 7B EF		JSR	OUTDD1
4040	FEA8 20 44 EB		JSR	CLR	;CLR PNTRS
4041	FEAB 4C 76 EF		JMP	OUTD7	;EXIT
4042	FEAE 4C 17 EF	PAT4A	JMP OUTD1A		;CONTINUE
4043	FEB1
4044	FEB1 8D 11 A4	PATCH5 STA PRIFLG			;TURN PRI OFF
4045	FEB4 4C 73 F0		JMP	IPO3
4046	FEB7
4047	FEB7 A9 1C	PATCH6 LDA #ADDR			;SIMULATE LDA (ADDR),Y
4048	FEB9 4C 58 EB		JMP	LDAY
4049	FEBC
4050	FEBC 20 3C E9	PATCH8 JSR READ			;READ & ECHO WITH CARROTS
4051	FEBF 48		PHA
4052	FEC0 20 D8 E7		JSR	EQUAL
4053	FEC3 A9 3C		LDA	#'<'
4054	FEC5 20 7A E9		JSR	OUTPUT
4055	FEC8 68		PLA
4056	FEC9 48		PHA
4057	FECA C9 0D		CMP	#CR
4058	FECC F0 03		BEQ	PATC8C
4059	FECE 20 7A E9		JSR	OUTPUT
4060	FED1 A9 3E	PATC8C LDA		#'>'
4061	FED3 20 7A E9		JSR	OUTPUT
4062	FED6 68		PLA
4063	FED7 60		RTS
4064	FED8
4065	FED8 C9 F7	PATCH9 CMP #$F7			;CHCK LOWER TRANSITION OF TIMER
4066	FEDA B0 06		BCS	PAT9A
4067	FEDC CD 08 A4		CMP	TSPEED
4068	FEDF 4C 9D EE		JMP	CKF3A
4069	FEE2 CD 08 A4	PAT9A	CMP	TSPEED
4070	FEE5 68		PLA
4071	FEE6 C9 FF		CMP	#$FF
4072	FEE8 60	PAT9B	RTS
4073	FEE9
4074	FEE9 20 F0 E9	PATC10 JSR CRLF			;CLR DISP (ONLY 1 <CR>)
4075	FEEC 4C 85 E1		JMP	STA1
4076	FEEF
4077	FEEF F0 F7	PATC11 BEQ PAT9B			;GO OUTPUT PROMPT
4078	FEF1 C9 4C		CMP #'L'		;NO PROMPT FOR "T" OR "L"
4079	FEF3 F0 F3		BEQ	PAT9B
4080	FEF5 4C C5 E7		JMP	PROMP1
4081	FEF8
4082	FEF8 48	PATC12 PHA			;CLEAR PRIFLG SO WE CAN OUTPUT
4083	FEF9 AD 11 A4		LDA	PRIFLG	;TO PRINTER IF FLG WAS ON (MSB)
4084	FEFC 29 F0		AND	#$F0
4085	FEFE 8D 11 A4		STA	PRIFLG
4086	FF01 68		PLA
4087	FF02 60		RTS
4088	FF03
4089	FF03 AD 12 A4	PATC13 LDA INFLG			;TURN TAPES ON ONLY IF TAPES
4090	FF06 C9 54		CMP	#'T'
4091	FF08 D0 DE		BNE	PAT9B
4092	FF0A 4C 29 E5		JMP DU14		;TURN ON TAPES & SET DEF DEV
4093	FF0D
4094	FF0D AD 13 A4	PATC14 LDA OUTFLG			;TURN ON TAPES ONLY IF TAPES
4095	FF10 C9 54		CMP	#'T'
4096	FF12 D0 D4		BNE	PAT9B

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 PATCH4 LDX CURPO2 Dont do Anything if 8D

Models: II

PATCH4 LDX

CURPO2

;DONT DO ANYTHING IF "8D"

CMP

CMP

CMP

CMP

CMP

CMP

CMP

II specifications