Outtty PHA

2213	EEA4 30 FB		BMI	CKF4
2214	EEA6 10 D9		BPL CKF2		;GO GET TIMING
2215	EEA8
2216	EEA8	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2217	EEA8	;OUTPUT ACC TO TTY SUBROUTINE
2218	EEA8	;X,Y ARE PRESERVED
2219	EEA8 48	OUTTTY PHA			;SAVE A
2220	EEA9 20 9E EB		JSR	PHXY	;PUSH X
2221	EEAC 8D 27 A4		STA	STIY	;PUT CHAR HERE
2222	EEAF 20 0F EC		JSR	DELAY	;STOP BIT FROM LAST CHAR
2223	EEB2 AD 00 A8		LDA	DRB
2224	EEB5 29 FB		AND	#$FB	;START BIT PB2=0
2225	EEB7 8D 00 A8		STA	DRB	;TTO=PB2
2226	EEBA 8D 28 A4		STA	STIY+1	;SAVE THIS PATTERN
2227	EEBD 20 0F EC		JSR	DELAY
2228	EEC0 A2 08		LDX	#$08	;8 BITS
2229	EEC2 2E 27 A4		ROL	STIY	;GET FIRST LSB INTO BIT 2
2230	EEC5 2E 27 A4		ROL	STIY
2231	EEC8 2E 27 A4		ROL	STIY
2232	EECB 6E 27 A4	OUTT1	ROR	STIY
2233	EECE AD 27 A4		LDA	STIY
2234	EED1 29 04		AND	#$04	;GET ONLY BIT 2 FOR PB2
2235	EED3 0D 28 A4		ORA	STIY+1	;PUT BIT INTO PATTERN
2236	EED6 8D 00 A8		STA	DRB	;NOW TO TTY
2237	EED9 08		PHP		;PRESERVE CARRY FOR ROTATE
2238	EEDA 20 0F EC		JSR	DELAY
2239	EEDD 28		PLP
2240	EEDE CA		DEX
2241	EEDF D0 EA		BNE	OUTT1
2242	EEE1 A9 04		LDA	#$04	;STOP BIT
2243	EEE3 0D 28 A4		ORA	STIY+1
2244	EEE6 8D 00 A8		STA	DRB
2245	EEE9 20 0F EC		JSR	DELAY	;STOP BIT
2246	EEEC 20 AC EB		JSR PLXY		;PULL X
2247	EEEF 68		PLA
2248	EEF0 C9 0A		CMP	#LF
2249	EEF2 F0 07		BEQ	OUTT2
2250	EEF4 C9 FF		CMP	#NULLC
2251	EEF6 F0 03		BEQ	OUTT2
2252	EEF8 4C 05 EF		JMP OUTDIS		;USE THAT BUFF
2253	EEFB 60	OUTT2	RTS
2254	EEFC
2255	EEFC	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2256	EEFC	;OUTPUT A CHR TO D/P SUBR (SINGLE ENTRY FOR BOTH SUBR)
2257	EEFC	;IF CHAR=<CR> CLEAR DISPLAY & PRINTER
2258	EEFC 20 00 F0	OUTDP	JSR OUTPRI		;FIRST TO PRI THEN TO DISP
2259	EEFF EA		NOP
2260	EF00 EA		NOP
2261	EF01 EA		NOP
2262	EF02 6C 06 A4	OUTDP1 JMP (DILINK)			;HERE HE COULD ECHO SOMEWHERE ELSE`
2263	EF05
2264	EF05	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2265	EF05	;OUTPUT ACC TO DISPLAY SUBROUTINE
2266	EF05	;IF SIGN BIT (MSB)=1 DISP DO NOT CLR TO THE RIGHT
2267	EF05 48	OUTDIS PHA			;SAVE A
2268	EF06 20 9E EB		JSR	PHXY	;PUSH X
2269	EF09 C9 0D		CMP	#CR	;<CR> ?
2270	EF0B D0 07		BNE	OUTD1
2271	EF0D A2 00		LDX	#0	;YES
2272	EF0F 8E 15 A4		STX	CURPO2	;CLEAR DISP POINTER
2273	EF12 F0 42		BEQ	OUTD5	;GO CLEAR DISP
2274	EF14 4C 9C FE	OUTD1	JMP	PATCH4

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 Outtty PHA

Models: II

ORA

ORA

CMP

CMP

CMP

II specifications