Mini-Assembler, Baum, Mneml, Mnemr, Cursup, A1PCLP, Sbc

+------------------------------------------------------------------------

TOPIC -- Apple II -- Red Book Mini-Assembler listing

+------------------------------------------------------------------------

1	***********************
2	*		*
3	*	APPLE-II	*
4	*	MINI-ASSEMBLER	*
5	*		*

7* APPLE COMPUTER INC. *

	8	*			*
	9	* ALL RIGHTS RESERVED *
	10	*			*
	11	*	S. WOZNIAK		*
	12	*	A. BAUM		*
	13	***********************
	14				; TITLE "APPLE-II MINI-ASSEMBLER"
	15	FORMAT	EQU	$2E
	16	LENGTH	EQU	$2F
	17	MODE	EQU	$31
	18	PROMPT	EQU	$33
	19	YSAV	EQU	$34
	20	L	EQU	$35
	21	PCL	EQU	$3A
	22	PCH	EQU	$3B
	23	A1H	EQU	$3D
	24	A2L	EQU	$3E
	25	A2H	EQU	$3F
	26	A4L	EQU	$42
	27	A4H	EQU	$43
	28	FMT	EQU	$44
	29	IN	EQU	$200
	30	INSDS2	EQU	$F88E
	31	INSTDSP EQU		$F8D0
	32	PRBL2	EQU	$F94A
	33	PCADJ	EQU	$F953
	34	CHAR1	EQU	$F9B4
	35	CHAR2	EQU	$F9BA
	36	MNEML	EQU	$F9C0
	37	MNEMR	EQU	$FA00
	38	CURSUP	EQU	$FC1A
	39	GETLNZ	EQU	$FD67
	40	COUT	EQU	$FDED
	41	BL1	EQU	$FE00
	42	A1PCLP	EQU	$FE78
	43	BELL	EQU	$FF3A
	44	GETNUM	EQU	$FFA7
	45	TOSUB	EQU	$FFBE
	46	ZMODE	EQU	$FFC7
	47	CHRTBL	EQU	$FFCC
	48		ORG	$F500
F500: E9 81	49	REL	SBC	#$81	;IS FMT COMPATIBLE
F502: 4A	50		LSR		;WITH RELATIVE MODE?
F503: D0 14	51		BNE	ERR3	; NO.
F505: A4 3F	52		LDY	A2H
F507: A6 3E	53		LDX	A2L	;DOUBLE DECREMENT
F509: D0 01	54		BNE	REL2
F50B: 88	55		DEY
F50C: CA	56	REL2	DEX

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 Mini-Assembler, Baum, Mneml, Mnemr, Cursup, A1PCLP, Zmode, Sbc

Models: II

TOPIC -- Apple II -- Red Book Mini-Assembler listing

MINI-ASSEMBLER

A. BAUM

MNEML

MNEMR

CURSUP

A1PCLP

ZMODE

SBC

II specifications