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Commodore Amiga A500 User Manual

Commodore Amiga A500
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Technical Reference
Manual
0
Commodore
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Commodore Amiga A500 Specifications

General IconGeneral
ProcessorMotorola 68000
ChipsetOCS (Original Chip Set)
Release Year1987
RAM512 KB
Sound4-channel stereo (Paula)
StorageFloppy disk drive (880 KB)
PortsMouse, joystick, serial, parallel, video, audio
Operating SystemAmigaOS 1.2
Clock Speed7.16 MHz (NTSC) / 7.09 MHz (PAL)

Summary

System Block Diagrams

Amiga 2000 Block Diagram

Presents the system block diagram for the Amiga 2000, showing major components and connections.

B2000 Block Diagram

Illustrates the system block diagram for the B2000, detailing its architecture and components.

A500 Block Diagram

Displays the system block diagram for the A500, outlining its key functional blocks.

Amiga Expansion

Designing Hardware for Expansion

Provides guidelines for designing hardware for the Amiga expansion bus, covering backplanes and PICs.

PC/XT Emulator and BIOS

PC/XT Emulator Description

Details the PC/XT emulator for Amiga 2000, including interface memory map and access types.

Amiga Hard Disk/SCSI Controller

Controller Description

Introduces the high-performance controller for ST506 drives and SCSI devices, highlighting features.

Controller Specifications

Lists technical specifications for ST506 Hard Disk and SCSI interfaces, including performance metrics.

Host Interface Protocol

Explains the DMA-based communication protocol between the host and the controller.

Fat Agnus Chip

Chip Description

Details the Fat Agnus chip, an N-channel HMOS DMA controller, its functions, and clock generation.

System Information

Schematics

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