STA A3H,X | Apple II specification

FFA0: 95 41	1077		STA	A3H,X
FFA2: E8	1078	NXTBS2	INX
FFA3: F0 F3	1079		BEQ	NXTBAS
FFA5: D0 06	1080		BNE	NXTCHR
FFA7: A2 00	1081	GETNUM	LDX	#$00	;CLEAR A2
FFA9: 86 3E	1082		STX	A2L
FFAB: 86 3F	1083		STX	A2H
FFAD: B9 00 02	1084	NXTCHR	LDA	IN,Y	;GET CHAR
FFB0: C8	1085		INY
FFB1: 49 B0	1086		EOR	#$B0
FFB3: C9 0A	1087		CMP	#$0A
FFB5: 90 D3	1088		BCC	DIG	;IF HEX DIG, THEN
FFB7: 69 88	1089		ADC	#$88
FFB9: C9 FA	1090		CMP	#$FA
FFBB: B0 CD	1091		BCS	DIG
FFBD: 60	1092		RTS
FFBE: A9 FE	1093	TOSUB	LDA	#GO/256	;PUSH HIGH-ORDER
FFC0: 48	1094		PHA		;	SUBR ADR ON STK
FFC1: B9 E3 FF	1095		LDA	SUBTBL,Y	;PUSH LOW-ORDER
FFC4: 48	1096		PHA		;	SUBR ADR ON STK
FFC5: A5 31	1097		LDA	MODE
FFC7: A0 00	1098	ZMODE	LDY	#$00	;CLR MODE, OLD MODE
FFC9: 84 31	1099		STY	MODE	;	TO A-REG
FFCB: 60	1100		RTS		; GO TO SUBR VIA RTS
FFCC: BC	1101	CHRTBL	DFB	$BC	;F("CTRL-C")
FFCD: B2	1102		DFB	$B2	;F("CTRL-Y")
FFCE: BE	1103		DFB	$BE	;F("CTRL-E")
FFCF: ED	1104		DFB	$ED	;F("T")
FFD0: EF	1105		DFB	$EF	;F("V")
FFD1: C4	1106		DFB	$C4	;F("CTRL-K")
FFD2: EC	1107		DFB	$EC	;F("S")
FFD3: A9	1108		DFB	$A9	;F("CTRL-P")
FFD4: BB	1109		DFB	$BB	;F("CTRL-B")
FFD5: A6	1110		DFB	$A6	;F("-")
FFD6: A4	1111		DFB	$A4	;F("+")
FFD7: 06	1112		DFB	$06	;F("M") (F=EX-OR $B0+$89)
FFD8: 95	1113		DFB	$95	;F("<")
FFD9: 07	1114		DFB	$07	;F("N")
FFDA: 02	1115		DFB	$02	;F("I")
FFDB: 05	1116		DFB	$05	;F("L")
FFDC: F0	1117		DFB	$F0	;F("W")
FFDD: 00	1118		DFB	$00	;F("G")
FFDE: EB	1119		DFB	$EB	;F("R")
FFDF: 93	1120		DFB	$93	;F(":")
FFE0: A7	1121		DFB	$A7	;F(".")
FFE1: C6	1122		DFB	$C6	;F("CR")
FFE2: 99	1123		DFB	$99	;F(BLANK)
FFE3: B2	1124	SUBTBL	DFB	BASCONT-1
FFE4: C9	1125		DFB	USR-1
FFE5: BE	1126		DFB	REGZ-1
FFE6: C1	1127		DFB	TRACE-1
FFE7: 35	1128		DFB	VFY-1
FFE8: 8C	1129		DFB	INPRT-1
FFE9: C3	1130		DFB	STEPZ-1
FFEA: 96	1131		DFB	OUTPRT-1
FFEB: AF	1132		DFB	XBASIC-1
FFEC: 17	1133		DFB	SETMODE-1
FFED: 17	1134		DFB	SETMODE-1
FFEE: 2B	1135		DFB	MOVE-1
FFEF: 1F	1136		DFB	LT-1
FFF0: 83	1137		DFB	SETNORM-1
FFF1: 7F	1138		DFB	SETINV-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 STA A3H,X

Models: II

STA

A3H,X

EOR

II specifications