AF E7 JMP KEP | Apple II specification

3132	F706	4C	AF E7			JMP KEP
3133	F709	A0	00		UPNO	LDY #0
3134	F70B 20 E9 F8					JSR ATBOT
3135	F70E 90 03					BCC UP1
3136	F710	4C	5C	FA		JMP ENDERR
3137	F713	B1	DF		UP1	LDA (NOWLN),Y
3138	F715	F0	09			BEQ UP4
3139	F717	C8				INY
3140	F718	C9	0D			CMP #CR
3141	F71A D0 F7					BNE UP1
3142	F71C 98					TYA
3143	F71D 20 2A F9					JSR ADDA	;ADD LENGTH TO CURRENT LINE
3144	F720	60			UP4	RTS
3145	F721
3146	F721				;*** B COMMAND-GO TO BOTTOM ***
3147	F721	20	C5	F8	BT	JSR SETBOT
3148	F724				;START	U-COMMAND HERE
3149	F724	20	D8	F6	DOWN	JSR DNNO	;U COMMAND
3150	F727
3151	F727				;*** <SPACE> COMMAND-DISPLAY CURRENT LINE ***
3152	F727	A0	00		PLNE	LDY #0	;PRINT CURRENT LINE
3153	F729	B1	DF		P02	LDA (NOWLN),Y
3154	F72B F0 0E					BEQ P01	;PAST END ?
3155	F72D C9 0D					CMP #CR	;DONE?
3156	F72F F0 0A					BEQ P01
3157	F731	20	BC E9			JSR OUTALL	;PUT IT SOMEWHERE
3158	F734	99	38	A4		STA DIBUFF,Y
3159	F737	C8				INY
3160	F738	4C	29	F7		JMP P02
3161	F73B 84 EA				P01	STY LENGTH
3162	F73D 84 E9					STY OLDLEN
3163	F73F AC 13 A4				P03	LDY OUTFLG	;ONE MORE <CR> FOR TAPE
3164	F742	C0	0D			CPY #CR
3165	F744	F0	03			BEQ P00
3166	F746	4C	F0	E9		JMP CRLF	;TO OUTPUT DEV
3167	F749	4C	24	EA	P00	JMP CRCK	;<CR>, & DONT CLR DISPL
3168	F74C
3169	F74C				;*** K COMMAND-KILL LINE ***
3170	F74C				;DELETE CURRENT LINE
3171	F74C 20 B6 F8				DLNE	JSR KIFLG	;CLR K OR I COMM FLG
3172	F74F EA					NOP
3173	F750	EA				NOP
3174	F751	EA				NOP
3175	F752	20	27	F7		JSR PLNE
3176	F755	20	E9	F8		JSR ATBOT
3177	F758	B0	CD			BCS PLNE	;AT END OF TEXT
3178	F75A A0 00					LDY #0
3179	F75C 84 EA					STY LENGTH
3180	F75E 20 3F F9					JSR REPLAC	;KILL LINE
3181	F761	4C	27	F7		JMP PLNE
3182	F764
3183	F764				;*****	I COMMAND-INSERT LINE *****
3184	F764	20	6D	F7	IN	JSR INL
3185	F767	20	F9	F6		JSR UP	;DISPLAY NEXT LINE DOWN
3186	F76A 4C 78 FA					JMP ERR0	;IF AT BOTTOM PRINT "END"
3187	F76D 20 B6 F8				INL	JSR KIFLG	;CLR K OR I COMM FLG
3188	F770	A0	00			LDY #0	;GET LINE INTO DIBUFF
3189	F772	84	E9			STY OLDLEN
3190	F774	20	BD E7			JSR PROMPT
3191	F777	20	44	EB		JSR CLR
3192	F77A 20 93 E9				IN02	JSR INALL
3193	F77D 20 F8 FE					JSR PATC12	;CLR, SO WE CAN OUTPUT TO PRI

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.