SBC Oldlen | Apple II specs

3504	F9D1 38		SEC
3505	F9D2 E5 E9		SBC	OLDLEN
3506	F9D4 A4 E9		LDY	OLDLEN
3507	F9D6 D0 02		BNE	R101	;ALREADY HAVE ROOM FOR CR
3508	F9D8 69 00		ADC	#0	;ADD ONE TO DIFFERENCE
3509	F9DA 48	R101	PHA
3510	F9DB 20 34 F9		JSR SAVNOW		;NOWLN INTO S1
3511	F9DE 20 C5 F8		JSR	SETBOT
3512	F9E1 A0 00		LDY	#0
3513	F9E3 B1 DF	R102	LDA	(NOWLN),Y
3514	F9E5 C9 00		CMP	#0
3515	F9E7 F0 06		BEQ	R108
3516	F9E9 20 28 F9		JSR	AD1
3517	F9EC 4C E3 F9		JMP	R102
3518	F9EF 68	R108	PLA
3519	F9F0 48		PHA
3520	F9F1 18		CLC
3521	F9F2 65 E1		ADC BOTLN		;ADD DIFFERENCE TO END
3522	F9F4 85 E1		STA BOTLN		;STORE NEW END
3523	F9F6 90 02		BCC	R103
3524	F9F8 E6 E2		INC	BOTLN+1
3525	F9FA 20 F9 F8	R103	JSR	ATEND
3526	F9FD 90 0B		BCC	R107
3527	F9FF A5 E7		LDA	SAVE	;RESTORE OLD BOTTOM
3528	FA01 85 E1		STA	BOTLN
3529	FA03 A5 E8		LDA	SAVE+1
3530	FA05 85 E2		STA	BOTLN+1
3531	FA07 4C 5C FA		JMP	ENDERR	;RAN PAST BUFFER END
3532	FA0A 20 09 F9	R107	JSR NOWS1		;SAVE CURRENT END
3533	FA0D 68		PLA
3534	FA0E 18		CLC
3535	FA0F 65 DF		ADC	NOWLN
3536	FA11 85 DF		STA	NOWLN
3537	FA13 90 02		BCC	R104
3538	FA15 E6 E0		INC	NOWLN+1
3539	FA17 A9 1A	R104	LDA	#S1
3540	FA19 20 58 EB		JSR	LDAY
3541	FA1C 91 DF		STA	(NOWLN),Y
3542	FA1E 20 4A FA		JSR	GOGO
3543	FA21 AD 1A A4		LDA	S1
3544	FA24 CD 1C A4		CMP	ADDR
3545	FA27 D0 08		BNE	R105
3546	FA29 AD 1B A4		LDA	S1+1
3547	FA2C CD 1D A4		CMP	ADDR+1	;BACK WHERE WE STARTED ??
3548	FA2F F0 13		BEQ	R106	;BRANCH IF DONE
3549	FA31 20 1D F9	R105	JSR	SUB
3550	FA34 CE 1A A4		DEC	S1
3551	FA37 AD 1A A4		LDA	S1
3552	FA3A C9 FF		CMP	#$FF
3553	FA3C D0 03		BNE	R1051
3554	FA3E CE 1B A4		DEC	S1+1
3555	FA41 4C 17 FA	R1051	JMP	R104
3556	FA44 20 D0 F8	R106	JSR	RESNOW
3557	FA47 4C BE F9		JMP	R9
3558	FA4A
3559	FA4A	;SEE IF IT		WROTE INTO MEMORY
3560	FA4A D1 DF	GOGO	CMP	(NOWLN),Y
3561	FA4C F0 0D		BEQ	GOGO1
3562	FA4E	;MOVE ADDRESS
3563	FA4E A5 DF		LDA	NOWLN
3564	FA50 8D 1C A4		STA	ADDR
3565	FA53 A5 E0		LDA	NOWLN+1

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 SBC Oldlen

Models: II

SBC

OLDLEN

ADC

CMP

ADC

CMP

CMP

CMP

CMP

II specifications