JMP LOADK5 Next | Apple II specification

0728	E3E5 4C		D1	E3		JMP	LOADK5	;NEXT
0729	E3E8 20		FD E3		LOADK7 JSR		RBYTE	;END OF DATA CMP CKSUM
0730	E3EB CD		1E	A4		CMP	CKSUM	;LOW
0731	E3EE D0		95			BNE	CKERR
0732	E3F0 20		FD E3			JSR	RBYTE
0733	E3F3 CD		1F	A4		CMP	CKSUM+1	;HIGH
0734	E3F6 D0		8D			BNE	CKERR
0735	E3F8 68					PLA		;CORRECT RTN INSTEAD OF WHEREI
0736	E3F9 68					PLA
0737	E3FA 4C		20	E5		JMP DU13		;TELL HIM & GO BACK TO COMMAN
0738	E3FD
0739	E3FD				;GET 2 ASCII CHRS INTO			1 BYTE
0740	E3FD				;FOR TAPE (T) GET ONLY			ONE HEX CHR
0741	E3FD AD		12	A4	RBYTE	LDA INFLG		;INPUT DEVICE
0742	E400	C9	54			CMP	#'T'
0743	E402	D0	03			BNE	RBYT1
0744	E404	4C	93	E9		JMP	INALL	;ONLY ONE BYTE FOR T (INPUT DEV)
0745	E407	20	93	E9	RBYT1	JSR	INALL
0746	E40A 20		84	EA		JSR	PACK
0747	E40D 20		93	E9		JSR	INALL
0748	E410	4C	84	EA		JMP	PACK
0749	E413
0750	E413				;STORE	AND	CHECK MEMORY FAIL
0751	E413	20	4E	E5	STBYTE JSR		CHEKA	;ADD TO CKSUM
0752	E416	A0	00			LDY	#0
0753	E418	20	78	EB		JSR	SADDR	;STORE AND CHCK
0754	E41B F0		03			BEQ	*+5
0755	E41D 4C		33	EB		JMP	MEMERR	;MEMORY WRITE ERROR
0756	E420	A0	01			LDY	#1	;INC ADDR+1,ADDR BY 1
0757	E422	4C	CD E2			JMP	NXTADD
0758	E425
0759	E425				;GET ID FROM LAST 2 CHR OF FILENAM
0760	E425	A2	04		GETID	LDX	#4	;SEE WHAT HE GAVE US
0761	E427	BD	2E	A4	GID1	LDA NAME,X		;GET LAST 2 CHARS
0762	E42A CA					DEX
0763	E42B C9		20			CMP	#' '	;<SPACE> ?
0764	E42D F0		F8			BEQ	GID1
0765	E42F BD		2E	A4		LDA	NAME,X	;CONVERT TO BINARY
0766	E432	20	84	EA		JSR	PACK
0767	E435	BD	2F	A4		LDA	NAME+1,X
0768	E438	4C	84	EA		JMP PACK		;ID IS IN STIY
0769	E43B
0770	E43B				;*** D COMMAND-GENERAL DUMP ***
0771	E43B				;TO TTY,PRINTR,USER,X ,TAPE,TAKIM-1
0772	E43B AD		10	A4	DUMP	LDA BKFLG		;SAVE IT TO USE IT
0773	E43E 48					PHA
0774	E43F A9		00			LDA	#00
0775	E441	8D	10	A4		STA	BKFLG
0776	E444	20	24	EA	DU1	JSR	CRCK	;<CR>
0777	E447	20	A3	E7	DU0	JSR	FROM	;GET START ADDR
0778	E44A B0		FB			BCS	DU0	;IN CASE OF ERROR DO IT AGAIN
0779	E44C 20		3E	E8		JSR	BLANK
0780	E44F 20		10	F9		JSR	ADDRS1	;TRANSFER ADDR TO S1
0781	E452	20	A7	E7	DU1B	JSR	TO	;GET END ADDR
0782	E455	B0	FB			BCS	DU1B
0783	E457	20	13	EA		JSR	CRLOW
0784	E45A AD		10	A4		LDA	BKFLG	;EXECUTE WHEREO ONLY ONCE
0785	E45D D0		0E			BNE	DU1A
0786	E45F 20		71	E8		JSR	WHEREO	;WHICH DEV (OUTFLG)
0787	E462	A9	00			LDA	#0
0788	E464	8D	06	01		STA	S2	;CLEAR RECORD COUNT
0789	E467	8D	07	01		STA	S2+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 JMP LOADK5 Next

Models: II

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II specifications