EAA3 CA DEX | Apple II specification

1655	EAA3 CA		DEX
1656	EAA4 D0 F9		BNE	PAK2
1657	EAA6 AE 2D A4		LDX	CPIY+3	;REST X
1658	EAA9 AD 29 A4		LDA	STIY+2
1659	EAAC 18		CLC
1660	EAAD 60		RTS
1661	EAAE
1662	EAAE	;GET FOUR BYTE ADDR ,TAKE LAST FOUR CHR TO...
1663	EAAE	;CALCULATE ADDR .ALLOW DELETE ALSO
1664	EAAE 20 D8 E7	ADDIN	JSR EQUAL
1665	EAB1 AD 15 A4	ADDNE	LDA CURPO2		;SAVE POSITION
1666	EAB4 48		PHA
1667	EAB5 A0 00		LDY #0
1668	EAB7 20 5F E9	ADDN1	JSR RDRUP
1669	EABA C9 0D		CMP #CR
1670	EABC F0 09		BEQ ADDN2
1671	EABE C9 20		CMP #' '
1672	EAC0 F0 05		BEQ ADDN2
1673	EAC2 C8		INY
1674	EAC3 C0 0B		CPY #11		;ALLOW 10
1675	EAC5 90 F0		BCC ADDN1
1676	EAC7 68	ADDN2	PLA
1677	EAC8 8D 2D A4		STA CPIY+3		;SAVE
1678	EACB C0 00		CPY #0		;IF FIRST CHR PUT DEFAULT VALUES
1679	EACD D0 0D		BNE ADDN3
1680	EACF A9 02		LDA #$02
1681	EAD1 8D 1D A4		STA ADDR+1		;DEFAULT OF 0200
1682	EAD4 8D 1E A4		STA CKSUM		;DEFAULT
1683	EAD7 8C 1C A4		STY ADDR
1684	EADA 18		CLC
1685	EADB 60		RTS
1686	EADC A2 00	ADDN3	LDX #0
1687	EADE 88		DEY		;Y-4
1688	EADF 88		DEY
1689	EAE0 88		DEY
1690	EAE1 88		DEY
1691	EAE2 10 13		BPL ADDN5		;BRANCH IF > 4 CHR
1692	EAE4 98		TYA
1693	EAE5 49 FF		EOR #$FF
1694	EAE7 A8		TAY		;# OF LEADING 0
1695	EAE8 A9 30	ADDN4	LDA #$30
1696	EAEA 9D 1C A4		STA ADDR,X
1697	EAED E8		INX
1698	EAEE 88		DEY
1699	EAEF 10 F7		BPL ADDN4
1700	EAF1 AC 2D A4		LDY CPIY+3		;NOW THE CHR
1701	EAF4 4C FD EA		JMP ADDN6
1702	EAF7 98	ADDN5	TYA		;PUT CHR
1703	EAF8 18		CLC
1704	EAF9 6D 2D A4		ADC CPIY+3
1705	EAFC A8		TAY
1706	EAFD B9 38 A4	ADDN6	LDA DIBUFF,Y		;FROM DISP BUFF
1707	EB00 9D 1C A4		STA ADDR,X
1708	EB03 C8		INY
1709	EB04 E8		INX
1710	EB05 E0 04		CPX #4
1711	EB07 D0 F4		BNE ADDN6
1712	EB09 A2 01		LDX #1
1713	EB0B A0 00		LDY #0		;CNVRT CHR TO HEX
1714	EB0D B9 1C A4	ADDN7	LDA ADDR,Y
1715	EB10 20 7D EA		JSR HEX
1716	EB13 B0 16		BCS ADDN8

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 EAA3 CA DEX

Models: II

EAA3 CA

DEX

II specifications