Dumpt, DUMPT1 TXA, DMPT1A LDA, DUMPT4 LDY

2101	8E87	20	A9	8D	DUMPT	JSR	START	;INIT VIA & CKSUM, SA TO BUFAD & START
2102	8E8A A9 07					LDA	#7	;CODE FOR TAPE OUT
2103	8E8C 8D 02 A4					STA	TAPOUT	;BIT 3 USED FOR HI/LO
2104	8E8F A2 01					LDX	#1	;KIM DELAY CONSTANT (OUTER)
2105	8E91	A4	FD			LDY	MODE	;128 KIM, 0 HS
2106	8E93	10	03			BPL	DUMPT1	;KIM - DO 128 SYNS
2107	8E95	AE 30 A6				LDX TAPDEL		;HS INITIAL DELAY (OUTER)
2108	8E98	8A			DUMPT1 TXA
2109	8E99	48				PHA
2110	8E9A A9 16				DMPT1A LDA		#SYN
2111	8E9C 20 0A 8F					JSR	OUTCTX
2112	8E9F 88					DEY
2113	8EA0 D0 F8					BNE DMPT1A		;INNER LOOP (HS OR KIM)
2114	8EA2 68					PLA
2115	8EA3 AA					TAX
2116	8EA4 CA					DEX
2117	8EA5 D0 F1					BNE	DUMPT1
2118	8EA7 A9 2A					LDA	#'*'	;WRITE START
2119	8EA9 20 0A 8F					JSR	OUTCTX
2120	8EAC
2121	8EAC AD 4E A6					LDA	ID	;WRITE ID
2122	8EAF 20 3F 8F					JSR	OUTBTX
2123	8EB2
2124	8EB2 AD 4C A6					LDA SAL		;WRITE SA
2125	8EB5 20 3C 8F					JSR	OUTBCX
2126	8EB8 AD 4D A6					LDA	SAH
2127	8EBB 20 3C 8F					JSR	OUTBCX
2128	8EBE
2129	8EBE				;
2130	8EBE 24 FD					BIT MODE		;KIM OR HS
2131	8EC0 10 0C					BPL	DUMPT2
2132	8EC2
2133	8EC2 AD 4A A6					LDA EAL		;HS, WRITE EA
2134	8EC5 20 3C 8F					JSR	OUTBCX
2135	8EC8 AD 4B A6					LDA	EAH
2136	8ECB 20 3C 8F					JSR	OUTBCX
2137	8ECE
2138	8ECE A5 FE				DUMPT2 LDA BUFADL			;CHECK FOR LAST BYTE
2139	8ED0 CD 4A A6					CMP	EAL
2140	8ED3 D0 25					BNE	DUMPT4
2141	8ED5 A5 FF					LDA	BUFADH
2142	8ED7 CD 4B A6					CMP	EAH
2143	8EDA D0 1E					BNE	DUMPT4
2144	8EDC
2145	8EDC A9 2F					LDA #'/'		;LAST, WRITE "/"
2146	8EDE 20 0A 8F					JSR	OUTCTX
2147	8EE1 AD 36 A6					LDA	SCR6	;WRITE CHECK SUM
2148	8EE4 20 3F 8F					JSR	OUTBTX
2149	8EE7 AD 37 A6					LDA	SCR7
2150	8EEA 20 3F 8F					JSR	OUTBTX
2151	8EED
2152	8EED A9 04					LDA #EOT		;WRITE TWO EOT'S
2153	8EEF 20 3F 8F					JSR	OUTBTX
2154	8EF2 A9 04					LDA	#EOT
2155	8EF4 20 3F 8F					JSR	OUTBTX
2156	8EF7
2157	8EF7				DT3E	=*		;(SET "OK" MARK)
2158	8EF7 4C 41 8D					JMP	OKEXIT
2159	8EFA
2160	8EFA A0 00				DUMPT4 LDY		#0	;GET BYTE
2161	8EFC B1 FE					LDA	(BUFADL),Y
2162	8EFE 20 3C 8F					JSR	OUTBCX	;WRITE IT W/CHK SUM

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 Dumpt, DUMPT1 TXA, DMPT1A LDA, DUMPT4 LDY

Models: II

DUMPT

DUMPT1 TXA

DMPT1A LDA

TAX

CMP

CMP

DUMPT4 LDY

II specifications