Manuals / Apple / Home Audio / Speaker

Apple II manual Rockwell International, Udrah, Uddra, Nowln

Models: II

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TOPIC -- AIM Computer -- AIM Monitor listing

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0001

0000

;TELEMARK CROSS ASSEMBLER (TASM) http://www.halcyon.com/squakvly/

0002

0000

 

 

 

 

 

0003

0000

;***************************************************

0004

0000

;***************************************************

0005

0000

;**

 

 

 

**

0006

0000

;**

 

 

PL-PA00-JOO1A

**

0007

0000

;**

 

 

 

**

0008

0000

;**

ROCKWELL R6500 MICROCOMPUTER SYSTEM

**

0009

0000

;**

 

 

 

**

0010

0000

;**

 

AIM 65 MONITOR

**

0011

0000

;**

 

 

 

**

0012

0000

;**

 

PROGRAM LISTING

**

0013

0000

;**

 

 

 

**

0014

0000

;**

REVISION A

AUG 22, 1978

**

0015

0000

;**

 

 

 

**

0016

0000

;***************************************************

0017

0000

;***************************************************

0018

0000

 

 

 

 

 

0019

0000

;ROCKWELL INTERNATIONAL

 

 

0020

0000

;MICROELECTRONIC DEVICES

 

0021

0000

;3310 MIRALOMA AVENUE

 

 

0022

0000

;P. O. BOX 3669

 

 

0023

0000

;ANAHEIM CA U.S.A. 92803

 

0024

0000

 

 

 

 

 

0025

0000

;

**************************************

 

0026

0000

;

* USER

6522 ADDRESSES (A000-A00F) *

 

0027

0000

;

**************************************

 

0028

A000

 

*=$A000

 

 

 

0029

A000

UDRB

.BLOCK

1

;DATA REG B

 

0030

A001

UDRAH

.BLOCK

1

;DATA REG A

 

0031

A002

UDDRB

.BLOCK

1

;DATA DIR REG B

 

0032

A003

UDDRA

.BLOCK

1

;DATA DIR REG A

 

0033

A004

UT1L

.BLOCK

1

;TIMER 1 COUNTER LOW

 

0034

A005

UT1CH

.BLOCK

1

;TIMER 1 COUNTER HIGH

 

0035

A006

UT1LL

.BLOCK

1

;TIMER 1 LATCH LOW

 

0036

A007

UT1LH

.BLOCK

1

;TIMER 1 LATCH HIGH

 

0037

A008

UT2L

.BLOCK

1

;TIMER 2 LATCH & COUNTER LOW

0038

A009

UT2H

.BLOCK

1

;TIMER 2 COUNTER HIGH

 

0039

A00A

USR

.BLOCK

1

;SHIFT REGISTER

 

0040

A00B

UACR

.BLOCK

1

;AUX CONTROL REGISTER

 

0041

A00C

UPCR

.BLOCK

1

;PERIPHERAL CONTROL REGISTER

0042

A00D

UIFR

.BLOCK

1

;INTERRUPT FLAG REGISTER

 

0043

A00E

UIER

.BLOCK

1

;INTERRUPT ENABLE REGISTER

 

0044

A00F

UDRA

.BLOCK

1

;DATA REGISTER A

 

0045

A010

 

 

 

 

 

0046

A010

ASSEM

=$D000

 

;ASSEMBLER ENTRY

 

0047

A010

BASIEN

=$B000

 

;BASIC ENTRY (COLD)

 

0048

A010

BASIRE =$B003

 

;BASIC ENTRY (WARM)

 

0049

A010

 

 

 

 

 

0050

A010

;

MONITOR RAM

 

 

0051

A010

;TEXT EDITOR EQUATES (PAG 0)

 

0052

A010

;OVERLAPS TABUF2+50 (TAPE OUTPUT BUFFER $AD-$FF)

 

0053

00DF

 

*=$00DF

 

 

 

0054

00DF

NOWLN

.BLOCK

2

;CURRENT LINE

 

0055

00E1

BOTLN

.BLOCK

2

;LAST ACTIVE , SO FAR

 

0056

00E3

TEXT

.BLOCK

2

;LIMITS OF BUFFER (START)

 

 

 

 

 

 

 

 

Page 139 Page 141
Page 140
Image 140
Apple II manual Rockwell International, Udrah, Uddra, Nowln
Page 139 Page 141

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.