HS Tape Boundary | Apple II guide

2287	8FB2 46		.DB $46	;HS TAPE BOUNDARY
2288	8FB3 00 00		.DB $00,$00	;SCR3,SCR4
2289	8FB5 33		.DB $33	;HS TAPE FIRST 1/2 BIT
2290	8FB6 00 00		.DB $00,$00	;SCR6,SCR7
2291	8FB8 00 00 00 00		.DB $00,$00,$00,$00 ;SCR8-SCRB
2292	8FBC 5A		.DB $5A	;HS TAPE SECOND 1/2 BIT
2293	8FBD 00 00 00		.DB $00,$00,$00 ;SCRD-SCRF
2294	8FC0 00006D6E8606		.DB $00,$00,$6D,$6E,$86,$06 ;DISP BUFFER (SY1.1)
2295	8FC6 00 00 00		.DB $00,$00,$00 ;NOT USED
2296	8FC9 00		.DB $00	;PARNR
2297	8FCA 000000000000		.DW $0000,$0000,$0000 ;PARMS
2298	8FD0 01		.DB $01	;PADBIT
2299	8FD1 4C		.DB $4C	;SDBYT
2300	8FD2 00		.DB $00	;ERCNT
2301	8FD3 80		.DB $80	;TECHO
2302	8FD4 B0		.DB $B0	;TOUTFL
2303	8FD5 00		.DB $00	;KSHFL
2304	8FD6 00		.DB $00	;TV
2305	8FD7 00		.DB $00	;LSTCOM
2306	8FD8 10		.DB $10	;MAXRC
2307	8FD9 4A 8B		.DW RESET	;USER REG'S
2308	8FDB FF		.DB $FF	;STACK
2309	8FDC 00		.DB $00	;FLAGS
2310	8FDD 00		.DB $00	;A
2311	8FDE 00		.DB $00	;X
2312	8FDF 00		.DB $00	;Y
2313	8FE0	;VECTORS
2314	8FE0 4C BE 89		JMP HKEY	;INVEC
2315	8FE3 4C 00 89		JMP HDOUT	;OUTVEC
2316	8FE6 4C 6A 89		JMP KYSTAT	;INSVEC
2317	8FE9 4C D1 81		JMP M1	;UNRECOGNIZED SYNTAX (ERROR)
2318	8FEC 4C D1 81		JMP M1	;UNRECOGNIZED COMMAND (ERROR)
2319	8FEF 4C 06 89		JMP SCAND	;SCNVEC
2320	8FF2 7E 88		.DW RIN	;IN PTR FOR EXEC FROM RAM
2321	8FF4 C0 80		.DW TRCOFF	;USER TRACE VECTOR
2322	8FF6 4A 80		.DW SVBRK	;BRK
2323	8FF8 29 80		.DW SVIRQ	;USER IRQ
2324	8FFA 9B 80		.DW SVNMI	;NMI
2325	8FFC 4A 8B		.DW RESET	;RESET
2326	8FFE 0F 80		.DW IRQBRK	;IRQ
2327	9000
2328	9000	LENTRY	=$8C78
2329	9000	SENTRY	=$8C78+$20F
2330	9000	RGNAM	=$8F9A	;REGISTER NAME PATCH
2331	9000
2332	9000		.END

tasm: Number of errors = 0

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 HS Tape Boundary

Models: II

;HS TAPE BOUNDARY

;HS TAPE SECOND 1/2 BIT

;REGISTER NAME PATCH

II specifications