Radio Shack 26-1080 Manuals

Manuals and User Guides for Radio Shack 26-1080. We have 1 Radio Shack 26-1080 manual available for free PDF download: Service Manual

Radio Shack 26-1080 Service Manual

Radio Shack 26-1080 Service Manual (199 pages)

microcomputer

Brand: Radio Shack | Category: Desktop | Size: 5.4 MB

Table of Contents

Table of Contents
3
Section I
5
Introduction
5
- System Overview
  6
- Optionai Features
  6
- System Block Diagram
  8
Specifications
9
- Microprocessor
  10
- Peripheral Interfaces
  10
- Power Requirements
  10
- Operating Temperature
  10
- Dimensions
  10
Disassembly/Assembly
11
- Case
  12
- Internal Rear Mounting Plate
  12
- Front Bezel
  12
- Top Cover/Power Supply
  12
- Cathoderaytube
  13
- Main Logic PCB
  13
- Keyboard Assembly
  13
- Disk Drive Assembly
  14
- Control Module
  14
Maintenance/Troubleshooting (General Suggestions, Reference to Section below for Specific Troubleshooting Hints)
16
- Theory of Operation
  18
- CPU Theory of Operation
  19
  - Introduction
    19
  - Reset Circuit
    19
  - Cpu
    19
  - System Timing
    19
  - Address Decode
    22
  - Rom
    22
  - Ram
    33
  - Video Circuit
    47
  - Keyboard
    49
  - Real Time Clock
    49
- Line Printer Port
  49
- Graphics Port
  53
- RS-232C Circuit
  60
  - Schematic8000192
    63
  - Gate Array Theory of Operation
    79
- CPU Theory of Operation
  79
- Introduction
  79
- Resetcircuit
  79

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