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TRS-80
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Radio Shack TRS-80 Service Manual
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Also See for TRS-80
:
Reference manual
(274 pages)
,
User manual
(236 pages)
,
Service manual
(199 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
General
Introduction
System Description
Memory Map
Color Computer 2 Memory Map
Color Computer 2 Memory Map
Color Computer 2 Memory Map
Normal Power Supply
Color Computer 2 Memory Map
Color Computer 2 Memory Map C
Specifications
Physical
Power
Technical
Disassembly/Assembly
Disassembly
T R S - B O
Color Computer 2
Assembly
Color Computer 2
Shield Clip Location
Power Cord Strain Relief
Upgrade Instructions
Upgrade
Theory of Operation
Mc6809E Cpu
MC6809E Programming Model
MC6809E Pin Assignments
MC6809E Read/Write Timing at 0.895 Mhz
Reset Circuit
MC6883 Reset Circuitry
Memory
DRAM Block Diagram
DRAM Timing
Video Generation Circuitry
Color Computer 2 Address Decoding
Artifacting
Color Computer 2 Artifacting Circuitry
Pias
PIA Block Diagram
Rom
Keyboard Interface
Color Computer 2 Keyboard Array
DAC Circuitry
Block Diagram
DAC Block Diagram
SALT Block Diagram
Color Computer 2 Power Supply
I/O Circuitry
SALT Circuitry
Cassette Tape Format Information
RS-232C Connector Pinout
Cartridge Connector (J6)
T R
Line Printer Variables
Alternate Line Printer Variable Values
Cartridge Connector Signals
Power Transformer
Joysticks
Joystick Schematic
TV Switch Box
Antenna Switch Box Schematic
Schematic 8000191, Color Computer
Component Layout 1700235, Main Logic Board 8857636. 61 Circuit Trace, PCB 8857636, Component Side
Circuit Trace, PCB 8857636, Solder Side
Parts List, PCB 8857636
Defective Power Supply
High Frequency Component of +5V Source
E and Q Clocks
VDG Clock and Modulator Clock
RAS* and CAS
Data in and Data out
Y and Phase B
Sound and Cassette Output
Cassette Zero Crossing Detector
Phase Band Phase a Relationships, Green Screen
Phase Band Phase a Relationships, Blue Screen
Phase Band Phase a Relationships, Red Screen
Artifacting Signals
Address Lines (Typical)
Data Lines (Typical)
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See also:
Service Manual
,
Reference Manual
·-
•
erv1ce
TRS-BO®
Color Computer 2
Catalog Number 26-3026/7
CUSTOM MANUFACTURED IN U.S.A. BY RADIO
SHACK,
A DIVISION
OF
TANDY CORPORATION
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