See if WE RAN Past END of Buffer Limit

3380	F8F6 60					RTS
3381	F8F7 18				AT01	CLC
3382	F8F8 60					RTS
3383	F8F9
3384	F8F9				;SEE IF WE		RAN PAST END OF BUFFER LIMIT
3385	F8F9 A5 E1				ATEND	LDA	BOTLN
3386	F8FB A6 E2					LDX	BOTLN+1
3387	F8FD E4 E6					CPX	END+1	;HIGH BYTE > OR = ?
3388	F8FF 90 F6					BCC	AT01
3389	F901	D0	F2			BNE	AT02
3390	F903	C5	E5			CMP	END	;LOW BYTE > OR = ?
3391	F905	90	F0			BCC	AT01
3392	F907	B0	EC			BCS	AT02
3393	F909
3394	F909				; SAVE CURRENT LINE (NEWLN) IN S1
3395	F909	A5	DF		NOWS1	LDA	NOWLN
3396	F90B A6 E0					LDX	NOWLN+1
3397	F90D 4C 16 F9					JMP	ADDS1A
3398	F910
3399	F910				; MOVE ADDR INTO S1
3400	F910	AD 1C A4			ADDRS1 LDA		ADDR
3401	F913	AE 1D A4				LDX	ADDR+1
3402	F916	8D	1A	A4	ADDS1A	STA	S1
3403	F919	8E	1B	A4		STX	S1+1
3404	F91C 60					RTS
3405	F91D
3406	F91D				; SUBTRACT		ONE FROM CURRENT LINE (NOWLN)
3407	F91D C6 DF				SUB	DEC	NOWLN
3408	F91F A5 DF					LDA	NOWLN
3409	F921	C9	FF			CMP	#$FF
3410	F923	D0	02			BNE	SUB1
3411	F925	C6	E0			DEC	NOWLN+1
3412	F927	60			SUB1	RTS
3413	F928
3414	F928				; ADD ACC TO CURRENT LINE (NOWLN)
3415	F928	A9	01		AD1	LDA	#1
3416	F92A 18				ADDA	CLC
3417	F92B 65 DF					ADC	NOWLN
3418	F92D 85 DF					STA	NOWLN
3419	F92F 90 02					BCC	ADDA1
3420	F931	E6	E0			INC	NOWLN+1
3421	F933	60			ADDA1	RTS
3422	F934
3423	F934	A5	DF		SAVNOW LDA NOWLN			;SAVE CURRENT LINE INTO ADDR
3424	F936	8D	1C	A4		STA	ADDR
3425	F939	A5	E0			LDA	NOWLN+1
3426	F93B 8D 1D A4					STA	ADDR+1
3427	F93E 60				REP2	RTS
3428	F93F
3429	F93F				;MOVE CURRENT TEXT AROUND TO HAVE
3430	F93F				;SPACE	TO PUT IN THE NEW BUFFER
3431	F93F A4 EA				REPLAC LDY		LENGTH
3432	F941	C4	E9			CPY	OLDLEN	;COMPARE OLD AND NEW LENGTHS
3433	F943	D0	1A			BNE	R2W	;BRANCH IF DIFF
3434	F945	F0	07			BEQ	R87	;LENGTHS ARE EQUAL. JUST REPLACE
3435	F947	A9	0D		R8	LDA	#CR
3436	F949	91	DF			STA	(NOWLN),Y
3437	F94B 20 4A FA					JSR	GOGO
3438	F94E
3439	F94E				;LENGTH = OLDLEN
3440	F94E 88				R87	DEY
3441	F94F C0 FF					CPY	#$FF

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 See if WE RAN Past END of Buffer Limit

Models: II

;SEE IF WE

RAN PAST END OF BUFFER LIMIT

CMP

CMP

ADC

II specifications