For, LOAD1A LDA | Apple II manual

0604	E2E0 BE		1C	A4		LDX	ADDR,Y
0605	E2E3 4C		42	EA		JMP	WRAX
0606	E2E6
0607	E2E6				;*** L COMMAND-GENERAL LOAD ***
0608	E2E6				;LOAD OBJECT FROM TTY,USER,TYPE OR TAPE IN KIM-1 FORMAT
0609	E2E6 20		48	E8	LOAD	JSR WHEREI		;WHERE INPUT
0610	E2E9				;GET ";"		, # OF BYTES	AND SA
0611	E2E9 20		93	E9	LOAD1	JSR	INALL	;GET FIRST CHAR
0612	E2EC C9		3B			CMP	#SEMICOLON	;LOOK FOR BEGINNING
0613	E2EE D0		F9			BNE	LOAD1	;IGNORE ALL CHARS BEFORE ";"
0614	E2F0 20		4D	EB		JSR	CLRCK	;CLEAR CHECHSUM
0615	E2F3 20		4B	E5		JSR	CHEKAR	;READ RECORD LENGTH
0616	E2F6 AA					TAX		;SAVE IN X THE # BYTES
0617	E2F7 20		4B	E5		JSR	CHEKAR	;READ UPPER HALF OF ADDRESS
0618	E2FA 8D		1D	A4		STA	ADDR+1
0619	E2FD 20		4B	E5		JSR	CHEKAR	;READ LOWER HALF OF ADDRESS
0620	E300	8D	1C	A4		STA	ADDR
0621	E303	8A				TXA
0622	E304	F0	1B			BEQ LOAD4		;LAST RECORD (RECORD LENGTH=0)
0623	E306				;GET DATA
0624	E306	20	FD E3		LOAD2	JSR RBYTE		;READ NEXT BYTE OF DATA
0625	E309	20	13	E4		JSR STBYTE		;STORE AT LOC (ADDR+1,ADDR)
0626	E30C CA					DEX		;DECR RECORD LENGTH
0627	E30D D0		F7			BNE	LOAD2
0628	E30F				;COMPARE CKSUM
0629	E30F 20		FD E3			JSR RBYTE		;READ UPPER HALF OF CHCKSUM
0630	E312	CD	1F	A4		CMP	CKSUM+1	;COMPARE TO COMPUTED VALUE
0631	E315	D0	6E			BNE	CKERR	;CKSUM ERROR
0632	E317	20	FD E3			JSR	RBYTE	;READ LOWER HALF OF CHECKSUM
0633	E31A CD		1E	A4		CMP	CKSUM
0634	E31D D0		66			BNE	CKERR
0635	E31F F0		C8			BEQ	LOAD1	;UNTIL LAST RECORD
0636	E321	A2	05		LOAD4	LDX	#5	;READ 4 MORE ZEROS
0637	E323	20	FD E3		LOAD5	JSR	RBYTE
0638	E326	CA				DEX
0639	E327	D0	FA			BNE	LOAD5
0640	E329	20	93	E9		JSR	INALL	;READ LAST <CR>
0641	E32C 4C		20	E5		JMP DU13		;SET DEFAULT DEV & GO BACK
0642	E32F
0643	E32F				;LOAD ROUTINE FROM TAPE BY BLOCKS
0644	E32F				;CHECK	FOR	RIGHT FILE & LOAD FIRST BLOCK
0645	E32F A9		00		LOADTA LDA		#$00	;CLEAR BLOCK COUNT
0646	E331	8D	15	01		STA	BLK
0647	E334	20	53	ED		JSR	TIBY1	;LOAD BUFFER WITH A BLOCK
0648	E337	CA				DEX		;SET X=0
0649	E338	8E	15	A4		STX	CURPO2	;CLEAR DISPLAY PTR
0650	E33B BD		16	01		LDA	TABUFF,X	;BLK COUNT SHOULD BE ZERO
0651	E33E D0		EF			BNE LOADTA		;NO, READ ANOTHER BLOCK
0652	E340	E8				INX
0653	E341				;AFTER FIRST BLOCK OUTPUT FILE NAME
0654	E341	EE	11	A4		INC PRIFLG		;SO DO NOT GO TO PRINT.
0655	E344	A0	48			LDY #TMSG0-M1		;PRINT "F="
0656	E346	20	AF E7			JSR	KEP
0657	E349	BD	16	01	LOAD1A LDA		TABUFF,X	;OUTPUT FILE NAME
0658	E34C 20		7A	E9		JSR OUTPUT		;ONLY TO DISPLAY
0659	E34F E8					INX
0660	E350	E0	06			CPX	#6
0661	E352	D0	F5			BNE	LOAD1A
0662	E354	20	3E	E8		JSR	BLANK
0663	E357	A0	61			LDY	#TMSG6-M1	;PRINT "BLK= "
0664	E359	20	AF E7			JSR	KEP
0665	E35C CE		11	A4		DEC	PRIFLG	;RESTORE PRINTR FLG

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 For, LOAD1A LDA

Models: II

JMP

BNE

STA

STA

BNE

BNE

BNE

BEQ

BNE

FOR

STA

STX

LOAD1A LDA

CPX

BNE

DEC

II specifications