COMMAND-FIND String | Apple II guide

3256	F80C				;*****	F COMMAND-FIND STRING *****
3257	F80C				;FIND STRING AND PRINT LINE TO TERMINAL
3258	F80C 20 1E F8				FCHAR	JSR	FCH
3259	F80F AD 15 A4				FCHA1	LDA CURPO2		;SAVE BUFFER PNTR
3260	F812	48				PHA
3261	F813	20	44	EB		JSR CLR		;CLEAR DISP PNTR
3262	F816	20	27	F7		JSR	PLNE
3263	F819	68				PLA
3264	F81A 8D 15 A4					STA	CURPO2
3265	F81D 60					RTS
3266	F81E				;FIND A CHARACTER STRING
3267	F81E A0 00				FCH	LDY	#0
3268	F820	20	BD E7			JSR	PROMPT
3269	F823	20	5F	E9	FC1	JSR	RDRUP	;GET THE CHARACTER
3270	F826	C9	0D			CMP	#CR	;REUSE OLD ARGUMENT??
3271	F828	D0	0A			BNE	FC3
3272	F82A C0 00					CPY	#0	;FIRST CHAR?
3273	F82C D0 06					BNE	FC3
3274	F82E 20 09 F7				FC2	JSR	UPNO	;NEXT LINE DOWN
3275	F831	4C	49	F8		JMP	FC5
3276	F834	C9	0D		FC3	CMP	#CR	;DONE
3277	F836	F0	0B			BEQ	FC4
3278	F838	99	EB 00			STA	STRING,Y
3279	F83B C8					INY
3280	F83C C0 14					CPY #20		;MAX LENGTH
3281	F83E D0 E3					BNE	FC1
3282	F840	4C	72	FA		JMP	ERROR
3283	F843	20	24	EA	FC4	JSR	CRCK	;CLEAR DISPLAY
3284	F846	8C	29	A4		STY	STIY+2	;COUNT OF CHARACTERS
3285	F849	A0	00		FC5	LDY	#0
3286	F84B 8C 15 A4					STY	CURPO2	;START AT BEGINNING OF LINENTR IS
3287	F84E AC 15 A4				FC6	LDY	CURPO2	;CLOBBER
3288	F851	A2	00			LDX	#0
3289	F853	B1	DF		FC7	LDA	(NOWLN),Y	;GET THE CHARACTER
3290	F855	D0	03			BNE	FC8	;NOT AT END
3291	F857	4C	5C	FA		JMP	ENDERR
3292	F85A C9 0D				FC8	CMP	#CR	;END OF LINE
3293	F85C F0 D0					BEQ	FC2
3294	F85E D5 EB					CMP	STRING,X
3295	F860	F0	06			BEQ	FC9
3296	F862	EE 15 A4				INC	CURPO2
3297	F865	4C	4E	F8		JMP	FC6
3298	F868	C8			FC9	INY
3299	F869	E8				INX
3300	F86A EC 29 A4					CPX STIY+2		;DONE?
3301	F86D D0 E4					BNE	FC7
3302	F86F 60					RTS
3303	F870
3304	F870				;*** Q COMMAND-EXIT EDITOR ***
3305	F870				; EXIT THE TEXT EDITOR NEATLY
3306	F870	20	13	EA	STOP	JSR CRLOW
3307	F873	4C	A1	E1		JMP COMIN
3308	F876
3309	F876				;*****	C COMMAND-CHANGE STRING *****
3310	F876				;CHANGE STRING TO ANOTHER STRING IN A LINE
3311	F876	20	B2	F8	CHNG	JSR CFLG		;SET C COMMAND FLG
3312	F879	20	0C	F8		JSR FCHAR		;FIND CORRECT LINE
3313	F87C 20 3C E9				CHN1	JSR READ		;IS <CR> IF OK
3314	F87F C9 0D					CMP #CR
3315	F881	F0	09			BEQ CHN2
3316	F883	20	2E	F8		JSR FC2		;TRY NEXT ONE
3317	F886	20	0F	F8		JSR FCHA1		; SHOW LINE

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 COMMAND-FIND String

Models: II

F COMMAND-FIND STRING *****

CMP

CMP

CMP

CMP

II specifications