Onekey LDA, Debkey LDX | Apple II specification

1965	ECC3 E0 00		CPX	#0	;IF SHIFT IS NOT ADV PAPER
1966	ECC5 F0 25		BEQ	GETK10	;NO SHIFT ,SO ADVPAPER
1967	ECC7 29 4F		AND	#$4F	;CONVRT TO "@"
1968	ECC9 C9 1C	GETK11 CMP		#$1C	;SEE IF TOGGL PRIFLG (CONTRL PRI)
1969	ECCB D0 14		BNE	GETK13
1970	ECCD 20 E1 E6		JSR	PRITR	;GO TOGGLE FLG
1971	ECD0 A0 01		LDY	#1	;GET THE PTRS BACK 3 SPACES
1972	ECD2 B9 15 A4	GETK12 LDA		CURPO2,Y
1973	ECD5 38		SEC
1974	ECD6 E9 03		SBC	#3	;BECAUSE "ON ,OFF" MSGS
1975	ECD8 99 15 A4		STA	CURPO2,Y
1976	ECDB 88		DEY
1977	ECDC 10 F4		BPL	GETK12
1978	ECDE 4C 40 EC		JMP	GETKEY
1979	ECE1 C9 5C	GETK13 CMP		#BACKSLASH	;PRINT LINE COMMAND
1980	ECE3 D0 06		BNE	GETK14
1981	ECE5 20 4A F0		JSR	IPS0	;PRINT WHATEVER IS IN BUFFER
1982	ECE8 4C 40 EC		JMP	GETKEY
1983	ECEB 60	GETK14 RTS
1984	ECEC 4C 38 EC	GETK10 JMP		GETKD0
1985	ECEF
1986	ECEF	;WAIT IF LAST KEY STILL DOWN (ROLLOVER)
1987	ECEF AD 82 A4	ROONEK LDA DRB2			;SEE IF KEY STILL DOWN
1988	ECF2 C9 FF		CMP	#$FF
1989	ECF4 F0 0A		BEQ	ROO1	;NO KEY AT ALL, CLR ROLLFL
1990	ECF6 0D 7F A4		ORA	ROLLFL	;ACCEPT ONLY LAST KEY
1991	ECF9 49 FF		EOR	#$FF	;STRBS ARE ZEROS TO INVER
1992	ECFB D0 F2		BNE	ROONEK
1993	ECFD 20 2A ED		JSR	DEBKEY	;CLR KMASK & DEBOUNCE RELEASE
1994	ED00 A9 00	ROO1	LDA	#0	;CLR KMASK
1995	ED02 8D 2A A4		STA	KMASK
1996	ED05	;GO THRU KB ONCE AND RTN ,IF ANY
1997	ED05	;KEY Y=ROW		(1-8) & STBKEY=CLMN
1998	ED05	;IF NO KEY		Y=0 ,STBKEY=$FF
1999	ED05 A9 7F	ONEKEY LDA		#$7F	;FIRST STROBE TO MSB
2000	ED07 D0 02		BNE	ONEK2	;START AT ONEK2
2001	ED09 38	ONEK1	SEC		;ONLY ONE PULSE (ZERO)
2002	ED0A 6A		ROR	A	;SHIFT TO RIGHT
2003	ED0B 8D 80 A4	ONEK2	STA	DRA2	;OUTPUT CLMN STROBE
2004	ED0E 8D 2B A4		STA	STBKEY	;SAVE IT
2005	ED11 A0 08		LDY	#8	;CHECK 8 ROWS
2006	ED13 AD 82 A4		LDA	DRB2	;ANY KEY ?
2007	ED16 0D 2A A4		ORA	KMASK	;DISABLE ROW 1 IF CTRL OR SHIFT
2008	ED19 8D 7F A4		STA	ROLLFL	;SAVE WHICH KEY IT WAS
2009	ED1C 0A	ONEK3	ASL	A
2010	ED1D 90 0A		BCC ONEK4		;JUMP IF KEY (ZERO)
2011	ED1F 88		DEY
2012	ED20 D0 FA		BNE	ONEK3
2013	ED22 AD 2B A4		LDA	STBKEY
2014	ED25 C9 FF		CMP	#$FF	;LAST CLMN ?
2015	ED27 D0 E0		BNE ONEK1		;NO ,DO NEXT CLMN
2016	ED29 60	ONEK4	RTS
2017	ED2A
2018	ED2A A2 00	DEBKEY LDX		#0	;CLEAR CNTRL OR SHIFT
2019	ED2C A9 00	DEBK1	LDA	#0	;CLR KMASK
2020	ED2E 8D 2A A4		STA	KMASK
2021	ED31 A9 88		LDA	#DEBTIM	;DEBOUNCE TIME FOR KEYBOARD
2022	ED33 8D 08 A8		STA	T2L
2023	ED36 A9 13		LDA	#DEBTIM/256
2024	ED38 4C 18 EC		JMP DE1		;WAIT FOR 5 MSEC
2025	ED3B
2026	ED3B	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

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 Onekey LDA, Debkey LDX

Models: II

CMP

ORA

EOR

ONEKEY LDA

ORA

CMP

DEBKEY LDX

II specifications