3566

FA55 8D 1D A4

 

STA

ADDR+1

 

3567

FA58 4C 33 EB

 

JMP

MEMERR

 

3568

FA5B 60

GOGO1

RTS

 

;OK

3569

FA5C

 

 

 

 

3570

FA5C 20 44 EB

ENDERR JSR CLR

;CLEAR PNTR

3571

FA5F A0 72

 

LDY #EMSG2-M1

;PRINT "END"

3572

FA61 20 AF E7

 

JSR

KEP

 

3573

FA64 20 D8 F6

 

JSR

DNNO

;BACK UP TO LAST LINE

3574

FA67 20 42 E8

 

JSR

TTYTST

;IF TTY <CR>

3575

FA6A D0 03

 

BNE

ENDE2

 

3576

FA6C 20 13 EA

 

JSR

CRLOW

 

3577

FA6F 4C 78 FA

ENDE2

JMP

ERR0

 

3578

FA72 20 FE E8

ERROR

JSR

LL

 

3579

FA75 20 D4 E7

 

JSR

QM

 

3580

FA78 20 44 EB

ERR0

JSR

CLR

 

3581

FA7B A2 FF

 

LDX

#$FF

 

3582

FA7D

COM

=ERR0

 

3583

FA7D 9A

 

TXS

 

 

3584

FA7E 20 FE E8

 

JSR

LL

;I/O TO TERMINAL (KB,D/P OR TTY)

3585

FA81 D8

 

CLD

 

 

3586

FA82 20 88 FA

 

JSR

COMM

 

3587

FA85 4C 78 FA

 

JMP

ERR0

 

3588

FA88

 

 

 

 

3589

FA88

;GET EDITOR COMMANDS & DECODE

3590

FA88 A2 00

COMM

LDX

#0

 

3591

FA8A 20 BC FE

 

JSR

PATCH8

;READ A CHAR WITH "=< >"

3592

FA8D A2 0B

ENTRY

LDX

#COMCN1

 

3593

FA8F DD AC FA

CD02

CMP

COMTBL,X

;COMPARE WITH ALLOWABLE COMMANDS

3594

FA92 F0 0C

 

BEQ CFND1

;MATCH ,SO PROCESS COMMAND

3595

FA94 CA

 

DEX

 

 

3596

FA95 10 F8

 

BPL

CD02

 

3597

FA97 20 D4 E7

 

JSR

QM

;NOT IN LIST ,SO NOT LEGAL COMMAND

3598

FA9A 20 24 EA

 

JSR

CRCK

 

3599

FA9D 4C 78 FA

 

JMP

ERR0

 

3600

FAA0 20 17 FF

CFND1

JSR

PATC15

;<CR> & START DECODING COMMAND

3601

FAA3 BD B9 FA

 

LDA

JTBL+1,X

 

3602

FAA6 8D 1B A4

 

STA

S1+1

 

3603

FAA9 6C 1A A4

 

JMP

(S1)

 

3604

FAAC

 

 

 

 

3605

FAAC

COMCN1 =11

 

 

3606

FAAC

;COMMAND TABLE

 

3607

FAAC 4B2052495544COMTBL

.DB

"K RIUDLTBFQC"

3607

FAB2 4C5442465143

 

 

 

 

3608

FAB8 4CF727F7CBF7JTBL

.DW

DLNE,PLNE,INPU,IN,DOWN,UP

3608

FABE 64F724F7F9F6

 

 

 

 

3609

FAC4 E1F7D2F621F7

 

.DW

LST,TP,BT,FCHAR,STOP,CHNG

3609

FACA 0CF870F876F8

 

 

 

 

3610

FAD0

 

 

 

 

3611

FAD0

;READ FROM MEMORY FOR ASSEMBLER

3612

FAD0 98

MREAD

TYA

 

 

3613

FAD1 48

 

PHA

 

 

3614

FAD2 A0 00

 

LDY

#0

 

3615

FAD4 B1 DF

 

LDA

(NOWLN),Y

 

3616

FAD6 8D 2A A4

 

STA

CPIY

 

3617

FAD9 20 28 F9

 

JSR

AD1

 

3618

FADC 68

 

PLA

 

 

3619

FADD A8

 

TAY

 

 

3620

FADE AD 2A A4

 

LDA

CPIY

 

3621

FAE1 60

 

RTS

 

 

3622

FAE2

 

 

 

 

3623

FAE2

;THIS PROGRAM CONVERS MNEMONIC INSTRUCTIONS INTO MACHINE

3624

FAE2

;CODE AND STORES IT IN THE DESIGNATED MEMORY AREA

 

 

 

 

 

 

Page 199
Image 199
Apple II manual GOGO1 RTS

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.