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Rainbow 100
Technical manual
Digital Equipment Rainbow 100 Technical Manual
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Also See for Rainbow 100
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Installation information
(154 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Figures (Cont)
Preface
Chapter 1 Introduction
General Description
Physical Description
Video Monitor
Keyboard Features
The Keyboard
Keyboard Leds
The System Unit
The System Module
Features and Capabilities
Rainbow 100 Computer Specifications
System Specifications
Keyboard Specifications
Video Monitor Specifications
System Unit and Power Supply Specifications
RXSO Dual-Diskette Drive Specifications
Chapter 2 Operating Information
Introduction
Using Diskettes
Powering up the Rainbow 100 Computer
Setting up the Computer
Main System Menu and Error Messages
Help
Tabs Major Heading
Local and Line Modes
Parameter Settings Major Heading
Set-Up Display - Tabs
Scroll
Set-Up Display - Param(Eter) Set(Tings)
Auto-Repeat
Correspondence/Data Processing Keyboard
Cursor
Emulation
Margin Bell
Screen
Screen Width
Auto-Wrap
New Line Mode
Default Character Set
Auto-Screen Blank
Auto-Screen Blank Phantom Cursor
Power
Print Termination Character
Print Extent
Auto-XON/XOFF
Local Echo
Transmit Break
Modem Stop Bits
Received Character Parity
Auto-Answerback
Disconnect Character Use
Disconnect Delay
How to Store an Answerback Message
Set-Up Display - Auto-Answerback
Modem Major Heading
Set-Up Display - Modem
Changing Modem Data Bits and Parity
Setting the Transmit Baud Rate
Setting the Receive Baud Rate
Setting Modem Protocol
Printer Major Heading
Set-Up Display - Printer
Setting Printer Data Bits and Parity
Setting Printer Transmit/Receive Baud Rate
Misc Major Heading
Scroll Rate
Bell Volume
Click Volume
Memory Major Heading
Set-Up Display - Memory
Set-Up Display - Misc(Ellaneous)
Save Set-Up Values
Recall Set-Up Values
Default Set-Up Values
Execute System Reset
Using the Computer's Operating System
Using a Host Computer Operating System
Connecting the Rainbow 100 Computer to a Host Computer
(Without Floor Stand)
Cables
Communications Set-Up Parameters
Modem Protocol
Full-Duplex with no Modem Control (FDXA)
Full-Duplex with Modem Control (FDXB)
Asymmetrical Full-Duplex (FDXC)
Break
Auto-XON/XOFF
Communications Connector Signals
Using Rainbow 100 Computer Diagnostics
Chapter 3 System Technical Description
Introduction
Basic System Components
Rainbow 100 Computer Basic System Components
System Unit
System Unit Physical Block Diagram
Keyboard (LK201)
Video Monitor (VR201)
System Functional Description
Rainbow 100 System Block Diagram
8088 Processor
System Module
8088 Memory
Byte ROM
Byte Screen RAM and 4K Byte Attribute RAM
Nvm
Shared Memory
Keyboard Interface
Communications and Printer Interface
Interrupt Logic
Z80A 2K Byte RAM
Z80A Processor
Z80A Shared Memory
Printer Baud Rate Generator
RX50 Controller
RX50 Diskette Drive Unit
Power Supply
Option Modules
Extended Communications Option
Memory Extension Option
System Interface Connectors
Comm Unica Tions Connector (11) Signals
Printer Connector (12) Signals
Extended Communications Connectors (J4 and J5)
Memory Extension Connector (J6) Signals
Power Supply Connector (J8) Signals
RX50 Controller Connector (19) Signals
Firmware Introduction
Terminal Mode
ROM Self Test Diagnostics
Chapter 4 System Module Technical Description
Introduction
Chapter Organization
Related Documentation
General Description
System Module Block Diagram
Physical Description
System Module Functional Description
System Module Address and Data Buses
Z80A Address and Data Buses
Buffered Output Data Bus
Video Processor Shared Address Bus
Video Processor Buffered Address Bus
Video Processor Attribute Bus
Video Processor Buffered Data Bus
Shared Memory Address Bus
Shared Data Bus
Clock Circuit
Master Clock
8088 Clock Logic
Z80A Clock Logic
RX50 Controller Clock Logic
8088 Processor
8088 Architecture
Bus Operation
Typical BIU Bus Cycles
8088 Pin Description
Z80A Processor
Z80A Basic Timing
Z80A Pin Description
System Module Memory
Byte Shared Memory
Byte ROM
Bit NVM
Byte Z80A Dedicated RAM (Static)
Byte Screen RAM and 4K Byte Attribute RAM (Static)
Screen RAM and Attribute RAM Control
I/O Decoders
Interrupt Logic
8088 Interrupts
Z80A Interrupts
Z80A/8088 Interprocessor Interrupts
Video Processor
Video Processor Block Diagram
Termination Detector
Video Shift Register
Video Generator
Composite Video Signal Characteristics
8088 Diagnostic and Control/Status Registers
Diagnostic Write Register: 8088 Processor
Diagnostic Read Register: 8088 Processor
Communications Status Register: 8088 Processor
Communications Control Register: 8088 Processor
System Module Control, Status, and Diagnostic Registers
Z80A Registers
General/Diagnostic Status Register: Z80A Processor
General/Diagnostic Control Register: Z80A Processor
Diskette Drive Status Register: Z80A Processor
Diskette Drive Control Register: Z80A Processor
MPSC General Description
MPSC Communications Channel
Asynchronous Operation
Synchronous Operation (Monosync, Bisync)
Synchronous Operation (HDLC/SDLC)
MPSC Printer Channel
Keyboard Interface
8251 A PUSART General Description
Control Register: 8251 a
Status Register: 8251A
Transmit and Receive Data Registers: 8251 a
MHFU Detection Logic
System Module Connectors
System Module Specifications
Physical Dimensions
DC Power
Environmental
Temperature
Relative Humidity
Altitude
Chapter 5 Rx50 Controller Module
Introduction
Chapter Organization
Related Documentation
General Description
Physical Description
Functional Description
Diskette Drive Formatter/Controller
Processor Interface
Diskette Drive Interface
Formatter/Controller Pin Descriptions
Data Separator
Write Precompensation
Diskette Drive Select Logic
Diskette Drive Ready Status
Diskette Drive Select Light Operation
Diskette Status Register (Read Only) Address 40H
Diskette Control Register (Write Only) Address 40H
General/Diagnostic Status Register (Read Only) Address 21H
Rx50 Controller Module Connectors
Specifications
Physical Dimensions
DC Power
Environmental
Chapter 6 Rx50 Diskette Drive
Introduction
Related Documentation
General Information
Physical Description
Diskette Description
Operating Procedures
Diskette Handling and Storage
Write Protection of Diskettes
Diskette Loading/Unloading
Configuration Options
Functional Components
Seek and Interface Module Functions
Motor Control Module and Spindle Motor Function
Head Load Solenoid Function
Sensor Functions
Stepper Motor Function
Read/Write Module Function
RX50 Drive Set-Up Sequence
Theory of Operation
Drive Mechanism Detailed Operation
Diskette Positioning Mechanism
Spindle Drive Mechanism
Head Positioning Mechanism
Head Load Mechanism
Sensors
Select Circuit Detailed Operation
Drive Select Circuit Detail
Motor Control Circuit Detail
Frequency to Voltage Converter Detail
Summer Detail
Integrator Detail
Gain Amplifier and Current Limiter
Head Load Solenoids and Leds
Status Circuit Detail
Write-Protect Status Circuit Detail
Diskette Present Status Circuit Detail
Status Sensor Detail
Index Sensor Detail
Diskette Present and Write-Protect Sensor Detail
Stepper Motor Circuit Detail
Track Zero Sensor Detail
Track Zero Status Circuit Detail
Read/Write Interface Circuit Detail
Write Driver Circuit
Erase Gate Timer Detail
Output Driver Detail
Write Circuit Detailed Operation
Write Current Generator Detail
Voltage Reference Detail
Differential Write Switch Detail
Erase Gate Generator Detail
Multiplexer Detail
Read Circuit Detailed Operation
Read Amplifier Detail
Multiplexer Detail
Write/Read Head Detailed Operation
TKG43 L Input Signal
DRIVE SEL 0 through DRIVE SEL 3 Input Signals
TRACK 0 L Output Signal
MOTOR on L Input Signal
DIRECTION Input Signal
STEP L Input Signal
WRITE DATA L Input Signal
WRITE GATE L Input Signal
INDEX L Output Signal
READ DATA L Output Signal
READY Output Signal
WRITE-PROTECT L Output Signal
DCOK L Output Signal
MPWR H Input Signal
Seek and Interface, Read/Write Modules Connector J9
SIDE a L Input Signal
SIDE B L Input Signal
W GATE L Output Signal
WRITE CURRENT SWITCH Output Signal
WRITE L Output Signal
ERASE GATE L Output Signal
Seek and Interface Power Connector
SEL a L Output Signal
Side a Switches and Indicators Connector 12
Side B Head Load Solenoid Connector J6
Drive Select Jumper J17
Side a Head Load Solenoid Connector JI0
Stepper Motor Connector J7
Spindle Motor Connector Jl1
Specifications
Performance Specifications
Reliability Specifications
Electrical Specifications
Environmental Specifications
Functional Specifications
Mechanical Specifications
Chapter 7 Power Supply and Fan
Introduction
Physical Description
Functional Description
Crowbar Fire
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