Digital Equipment VT180 Series User manual

EK-VT

l8X-1M-OO

Prepared

Educational services

Digital Equipment Corporation

1st Edition, February 1983

©Digital Equipment Corporation 1983.

Printed in U.S.A.

The material in this manual

for informational purposes and

subject

to change without notice.

Digital Equipment Corporation assumes

responsibility for any errors

that may appear in this manual.

IM® is aregistered trademark

Digital Research Inc.

Mylar™

atrademark

DuPont de Nemours &Company, Inc.

WordStar® is aregistered trademark

MicroPro, Inc.

Z80®

aregistered trademark

Zilog, Inc.

The

manuscript for this book was created on aDIGITAL Word

Processing System and, via atranslation program, was automatically

typeset on DIGITAL's DECset Integrated Publishing System. Book

production was done by

Educational

Services Development

and

Publishing in Marlboro, MA.

The following are trademarks

Digital Equipment Corporation:

mlliumD

DEC

DECmate

DECsystem-l0

DECSYSTEM-20

DECUS

DECwriter

DlBOl

MASSBUS

PDP

P/OS

Professional

Rainbow

RSTS

RSX

TOPS-l

TOPS-20

UNIBUS

VAX

VMS

Work Processor

PREFACE

CHAPTER 1

1.1

1.2

1.3

1.3.1

1.3.2

1.3.3

1.3.4

1.4

1.5

1.6

1.7

1.8

1.9

1.9.1

1.9.2

CHAPTER 2

2.1

2.2

2.3

2.3.1

2.3.2

2.3.2.1

2.3.2.2

2.3.2.3

2.3.2.4

2.4

2.4.1

2.4.2

2.4.3

2.4.4

2.5

2.5.1

2.5.2

2.6

2.6.1

2.6.2

2.6.2.1

2.6.2.2

2.6.2.3

2.6.3

2.6.4

2.6.4.1

2.6.4.2

2.6.4.3

CONTENTS

INTRODucnON

ANDSPECIFICATIONS

GENERAL

DESCRIPTION

1-1

PHYSICAL DESCRIPTION

1-1

VT180 SPECIFICATIONS

1-3

System Physical Dimensions

1-3

Unit Physical Dimensions

1-3

Environmental Specifications

1-4

Electrical Specifications 1

VIDEO DISPLAY CHARACTERISTICS

1-4

KEYOOARD

1-5

AUDIBLE

SIGNAlS

1-5

COMMUNICATION CHARACTERISTICS

1-5

DISK DRIVE CHARACTERISTICS

1-6

I:XX::UMENT

ATION

1-7

Digital Hardware and Software Documentation

1-7

Other Documentation

1-7

OPERATING INFORMATION

INTR.ODUCTION

2-1

TERMINALOPERATION

2-1

CONTROlS

AND INDICATORS

2-1

Terminal Monitor and Disk Drive Power Controls

2-3

KeyOOa.rd

Controls

2-4

Standard Keys

2-4

Function

Keys

2-5

Set-Up Keys

2-7

Auxiliary Keypad

Keys

2-8

VISUAL INDICATORS

2-9

,ON-LINE

2-9

LOCAL

2-9

KBD

LOCKED

2-9

LI through

Indicators 2-10

AUDmLE INDICATORS 2-10

Keyclick

2-1

:Bell

Tone

2-10

SET-UP MODE

2-1

Entering.and Exiting Set-Up

2-10

Set-Up Feature

TyJ>eS

2-13

Operator Preference Features

2-13

Communication Compatibility Features

2-13

Installation Features

2-14

Set-Up Feature Selection

2-14

Restoring and Saving Set-Up Features

2-15

Restore

2-15

Sa.ve

2-15

Reset

2-15

•••

1lI

2.6.5

2.6.5.1

2.6.5.2

2.6.5.3

2.6.5.4

2.6.5.5

2.6.5.6

2.6.5.7

CHAPTER

3.1

3.2

3.3

3.4

3.4.1

3.4.2

3.4.3

3.4.4

3.4.5

3.4.6

3.4.7

3.4.8

3.4.9

3.4.10

3.4.11

3.4.12

3.4.12.1

3.4.12.2

3.4.12.3

3.4.12.4

3.4.13

3.4.14

3.5

3.5.1

·3.5.2

3.5.3

3.5.3.1

3.5.3.2

3.5.3.3

3.6

3.6.1

3.7

3.7.1

3.7.2

3.7.3

3.8

3.8.1

3.8.2

3.8.3

3.8.4

CONTENTS (Cont)

Set-Up Features 2-16

General Set-Up Features

2-16

SET-UP

AFeatures 0

••••••••••••••••••••••••••••••

•••••••••••••••••••••••••••••••••

2-17

SET-UP

B2-17

SET-UP

User Preference Features

2-19

SET-UP

Compatibility Features

2-21

SET-UP

Host Computer Compatibility

2-23

SET-UP

Answerback Message 2-24

INSTALLA

nON

AND

INTERFACE

INFORMA

nON

GENERAL

3-1

SITE

CONSIDERATIONS

3-1

UNPACKING AND INSPECTION

3-3

VT18X UPGRADE KIT INSTALLATION

3-4

Check the ROMs

the Terminal Controller Module

3-5

Install the

180

Paddle Board

3-9

Install the Expansion Backplane

the Card Cage

3-1

Install the Card Guides

3-15

Install the RFShield 3-16

Install the Terminal Controller Module

3-17

Install the

18X

Control Module

3-17

Install the Chassis

the Bottom Cover

3-19

Install the

VTI80

Logo~

~ ~ ~

3-19

Install the Top Cover 3-20

Install the New Metal Module Access Cover (Rear Shield)

Checking the RX180 Drive Select Switches

3-21

Disk Drive Unit Top Cover Removal 3-22

Setting the Drive Select Switches 3-22

Terminator Resistor Pack

3-23

Disk Drive Unit Top Cover (Reinstallment) 3-24

ROM Removal andJnstallation 3-24

Word Processing Option

~ ~

..3-25

SYSTEM INTERCONNECTIONS 3-26

Terminal Installation 3-26

Install the RX180 Disk Drive Unit(s)

3-27

Serial Port Connections

Printer

Port

~ ~

~3-29

Communications

Port

~ ~

3-31

General Purpose Port

POWER-UP

PROCEDURE

~ ~ ~

3-31

Self-Test Error Messages 3-32

SYSTEM

CHECKOUT

~ ~

3-33

ROM-Based Diagnostic

3-33

18X

Diskette Diagnostic

3-33

Hardware Installation Complete

INTERFACE INFORMATION 3-34

Communications Interface Connector 3-34

Printer Interface Connector

General Purpose Serial Interface Connector :3-36

RX180

Disk

Port Connector 3-36

•

3.8.5

3.8.5.1

3.8.5.2

CHAPTER 4

4.1

4.2

4.2.1

4.2.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9

4.10

CHAPTERS

5.1

5.2

5.2.1

5.2.1.1

5.2.1.2

5.2.1.3

5.2.1.4

5.2.1.5

5.2.1.6

5.2.1.7

5.2.2

5.3

5.3.1

5.3.2

5.4

CHAPTER 6

6.1

6.2

6.2.1

6.2.1.1

6.2.1.2

6.2.1.3

6.2.1.4

6.2.1.5

6.2.1.6

6.2.2

6.2.3

6.2.4

CONTENTS (Coot)

External

Video

Connections

Composite Video Output Connector (J9)

3-38

Video

Input Connector (J8) 3-38

VT180

OPERATION

INTRODUCTION 0

•••••••••••••••••••••••••••••••••••••••••••••

4-1

DISKETTES AND FILES

4-1

Storing Information

Diskettes

4-1

Using Diskettes

4-1

CP/M

INTO VTI80 MEMORY

4-2

ENDING

OPERATING SESSION .4-6

COPYING THE

CP/M

MASTER DISKETTE .4-6

USING THE

180

4-9

CONVERSING WITH

CP/M

4-10

ISSUING COMMANDS

4-1

RESIDENT ANDTRANSIENT

CP/M

COMMANDS .4-10

RUNNING

APPLICATION PROGRAMS

4-11

SETTING

THE

SERIAL PORTS' TRANSMISSION CHARACTERISTICS

INTRODUCTION

5-1

PSETUP

5-1

Mode

5-2

Ba.ud

Rate Selection

Communications Port Data/Stop Bits/Parity :.5-2

General Purpose Port Data/Stop Bits/Parity

Printer Port Data/StopBits/Parity

5-3

Show

All

Selections Made

Set

J>arlllllet(:rs

t<>

Defllllit

Selecti<>IlS

5-:3

Return to CP

Concise Mode

PSETUP EXAMPLES

Menu Mode

Concise

Mode

5-6

PSETUP ERROR MESSAGES

5-7

TECHNICAL DESCRIPTION

INTRODUCTION

6-1

SYSTEM DESCRIPTION

6-1

System Subunits

6-1

Terminal Controller Module

6-2

Advanced

Video

Option (A

VO)

6-3

Video

Monitor

180

Power Supply

Keyboard

18X

Control Module

VT100 and VTI8X Control Module Interconnection 6-4

180

Paddle

8<>ard

6-4

180

Disk

Drive Unit 6-4

6.3

6.3.1

6.3.2

6.3.3

6.3.4

6.3.5

6.3.6

6.3.7

6.3.8

6.3.9

6.3.10

6.3.11

6.3.12

6.3.13

6.3.14

6.3.15

6.3.16

6.3.17

6.3.18

6.3.19

6.4

6.5

6.5.1

6.5.2

6.5.3

6.5.4

6.5.5

6.5.5.1

6.5.5.2

6.5.5.3

6.5.5.4

6.5.5.5

6.5.6

6.5.6.1

6.5.6.2

6.5.7

6.5.8

6.5.8.1

6.5.8.2

6.5.8.3

6.5.9

6.5.10

6.5.10.1

6.5.10.2

6.5.10.3

6.5.11

6.5.12

6.5.12.1

6.5.12.2

6.5.12.3

6.5.12.4

CONTENTS (Coot)

VT100 FUNCTIONAL DESCRIPTION

6-5

Microprocessor

Program

ROM

6-6

Scratch

RAM

6-6

Nonvolatile RAM

6-6

Advanced

Video

Option

6-6

Keyooard 6-6

LE:Ds

6-6

KeyOOard

Translator

6-6

Transmit Buffer

6-6

Co "T .

mmunlca.tlon

ransmltter

6-6

C" R .

ommunlcatlon ecelver 6-7

Silo

6-7

Control Function Parser

6-7

Screen RAM

Video

Processor

6-7

CRTMonitor

6-8

Power Supply

6-8

Standard Terminal Port

6-8

EIA Drivers and Receivers

6-8

FIR~

1~C:>JC)'-JC1[1[C:>1'l

6-8

TERMINAL CONTROLLER DESCRIPTION

6-1

80·80

Microprocessor

6-1

Data

Bus

and System Controller 6-12

Clock Generator 6-14

Bus

Timing 6-14

Microprocessor Memory

6-15

Memory Map

6-17

Memory

I:levices

6-1

ROM

I:lecod.ing

6-17

RAM

I:lecod.ing

6-1

Memory Disable

6-18

I/O

I:>ecod.ing

6-18

PUSARTRead and Write

6-18

I/O

Read and Write

6-18

Interrupt Vector 6-19

Communication Transceiver

Data Transmission

Data Reception 6-20

PUSART Programming 6-22

Standard Terminal Port

6-24

Nonvolatile RAM

NVR

Control 6-25

Mi<:rol'rocessor

lYfanagement

6-2:1

NVR Timing

Keyboard Interface

6-26

Video

Processor

Timing ChiI'

I:les<:ril'tion

6-30

Control ChiI'

Des<:ril'tion

Address Counter and Data

Stru<:ture

RAIYf

6-43

Address

Lat<:h

Buffer 6-44

•

6.5.12.5

6.5.12.6

6.5.12.7

6.5.12.8

6.5.12.9

6.5.12.10

6.5.12.11

6.5.12.12

6.5.13

6.5.13.1

6.5.13.2

6.5.13.3

6.5.13.4

6.5.13.5

6.6

6.6.1

6.6.2

6.6.3

6.6.4

6.6.5

6.6.6

6.6.7

6.6.8

6.6.9

6.6.10

6.6.10.1

6.6.10.2

6.6.10.3

6.6.10.4

6.6.10.5

6.6.10.6

6.6.11

6.6.12

6.6.12.1

6.6.12.2

6.6.12.3

6.6.12.4

6.6.12.5

6.6.12.6

6.6.13

6.6.13.1

6.6.13.2

6.6.13.3

6.6.13.4

6.6.13.5

6.6.14

6.6.14.1

6.6.14.2

6.6.14.3

6.6.14.4

CONTENTS (Coot)

Line Buffer 6-44

Character Generator ,6-44

Video

Shift Register

6-45

Terminator 6-46

DMA Cycle Timing Diagram

6-47

Video

Blanking 6-49

Video

Input and Output 6-49

Intensity Control ....o

•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

••••••••••••

6-49

Microprocessor -

Video

Processor Interface 6-50

Screen Memory Organization 6-50

Line

Organiza.

tion

Scrolling Region

Cursor

Set-up

6-53

VT18X CONTROL MODULE DESCRIPTION

6-53

Z80A CPU

Interrupts

64K Byte RAM

6-58

8K Byte ROM 6-59

Console Port 6-60

Communications Port 6-62

Printer Port 6-64

General Purpose Serial Port

6-65

Terminal Controller and VT18X Control Module Interconnections

6-65

Disk Drive Controller

6-67

Disk

Drive Controller Functional Description

6-67

Formatter/Controller :

6-67

Phase-Locked

Loop

DiskDrive Controller Registers 6-76

Disk

Drive Controller Latches

6-77

Disk

Drive Interface Connector

6-77

VT18X Control Module Input/Output Addresses

6-78

Communications Data and Control Status Registers 6-79

ASYnchronous

Mode Instruction Format

(41H, 49H, 51H, 59H) WO 6-79

Synchronous Mode Instruction Format (59H) WO

6-81

Command Instruction Registers

(41

H, 49H,

59H) WO 6-82

Status Read Registers (41H, 49H, 51H, 59H) RO

6-83

Transmit Data Buffer Register (40H, 48H, 50H, 58H) WO 6-84

Received Data Buffer Register (40H, 48H, 50H, 58H) RO

6-85

Disk

Drive Controller Registers

6-85

Command Register (Write-Only)

6-85

Status Register (Read-Only) 6-89

Track Register (Read/Write)

6-93

Sector Register (Read/Write)

6-93

Data Register (Read/Write)

6-93

Disk

Drive Command Summary

6-93

TYJle

ICommands

6-93

TYJle

II Commands

6-93

TYJle

III Commands 6-94

Type

Command 6-94

6.6.15

6.6.16

6.6.17

6.6.18

6.6.19

6.6.20

6.7

6.8

6.8.1

6.8.1.1

6.8.1.2

6.8.1.3

6.8.1.4

6.8.1.5

6.8.1.6

6.8.1.7

6.8.1.8

6.8.1.9

6.8.1.10

6.9

6.9.1

6.9.2

6.9.3

6.9.4

6.9.5

6.9.5.1

6.9.5.2

6.10

6.10.1

6.10.2

6.10.3

6.10.4

6.10.5

6.10.6

6.10.6.1

6.10.6.2

6.10.6.3

6.10.6.4

6.10.6.5

6.10.6.6

6.10.7

6.10.8

6.10.9

6.10.9.1

6.10.9.2

6.10.9.3

6.10.9.4

6.10.9.5

CONTENTS (Cont)

General Control and Status Register (80H) 6-94

Communications Status Register (88H) 6-96

Communications Control/Baud Rate Select Register (90H)

6-97

Interrupt and INIT Reset Register (90H) 6-98

Diagnostic Write Register (98H) 6-98

Diagnostic Read Register

(AOH)

6-99

VTI80 PADDLE BOARD DESCRIPTION 6-100

VT100

MONITOR

6-102

Elston Monitor Board Description (Digital part number 30-16080) 6-102

Video

Driver

6-102

Brightness 6-102

Vertical Oscillator 6-102

Self-Oscillation 0

6-1

Vertical Output 6-103

Lineariza.tion 6-103

Horizontal Driver 6-103

Horizontal Deflection Operation 6-103

Horizontal Output Circuit 6-106

High Voltage and Focus 6-106

POWERSUPPLY 6-106

Power Input 6-106

Start-Up Circuit 6-107

Control Circuit

6-107

Outputs 6-109

Power Supply Specifications

6-11

Input Specifications 6-110

Cooling

:6-114

KEYBOARD DESCRIPTION 6-114

Keyboard

Block

Diagram 6-114

Keyboard UARTs 6-114

Keyboard Status Byte 6-115

Key

Address Counter 6-116

Key

Scanning and Address Formation 6-117

Bidirectional Interface Operation 6-119

Interface Line 6-119

Receiving Side 6-119

Terminal Data Encoding 6-120

Combined Interface Signal

6-121

Decoding of Data from TerminaL

6-121

Keyboard Output 6-122

Bell

6-123

Keyboard Interrupt Routine 6-123

Logical Keyboard Processor 6-124

Key

Recognition 6-124

Key

Rollover 6-124

Generation of Codes 6-125

Keyboard Transmit Buffer 6-126

Auto Repeat 6-126

•••

Vlll

CHAPTER

7.1

7.2

7.2.1

7.2.2

7.2.3

7.2.4

7.2.5

7.2.ti

7.3

7.3.1

7.3.2

7.3.3

7.4

7.4.1

7.4.1.1

7.4.1.2

7.4.1.3

7.4.1.4

7.4.2

7.4.2.1

7.4.2.2

7.4.3

7.4.4

7.4.4.1

7.4.4.2

7.4.4.3

7.4.4.4

7.4.5

7.5

7.5.1

7.5.2

7.5.2.1

7.5.2.2

7.5.3

7.5.4

7.ti

7.ti.l

7.ti.1.1

7.ti.1.2

7,ti.2

7.ti.2.1

7.ti.2.2

7.ti.2.3

7.ti.2.4

7.ti.2.5

7.ti.2.ti

7.ti.2.7

CONTENTS (Coot)

SERVICE

INFORMATION

INTRODUCTION

7-1

TESTING THE VT180 USING ROM DIAGNOSTICS

7-1

Error

Messages

and

Codes

7-1

Power-Up

Test

7-3

Keyooard

Tests

7-6

CPU, Dynamic RAM, Communication UART,

ancl

][)Us)(

Dri,,(:

Controll(:r

T~ts

7-ti

Set-Up

Screen

Test

7-6

Video

Adjust

Test

7-7

MODULE CONFIGURATIONS

7-8

18X Control

Moclule

Configuration

7-8

T(:rminal Controll(:r

Moclul(:

ROMs

7-9

Acl"anrecl

Vicl(:o

Option Configuration

7-9

DISKEITE

DIAGNOSTICS

7-9

Diagnostic

Operation

7-10

Basic

Test

OJ>eration

-10

Ext(:ncl(:cl

T~t

Opt:ration 7-14

Individual

Diagnostics 7-14

Incli"iclual

T~t

Exampl(: Dialog

7-1

Floppy

Test

7-17

Happy

Test

OJleration

7-17

Floppy

T(:st

~cription

7-18

RAM

Test 7-19

Communications

Tests 7-20

Basic

Communications

T~t

7-20

Synchronous Communications

T(:st

7-20

Loopbac)( Plug

T~ts

7-21

Print(:r

ConficlenC(:

~ts

7-21

Di's)((:u(:-Bas(:cl

Diagnostic Error

M(:ssag~

7-22

TROUBLESHOOTING

7-22

Troubl~hooting

th(:

Basic

180

7-23

Troubl~hooting

th(:

VT180 with

th(:

Diagnostic

Dis)((:u(:

7-23

Starting

th(:

Diagnostic

Dis)((:u(:

7-24

Diagnostic Error

M(:ssag~

,7-24

Troubl~hooting

th(:

VT180 with

Printout.. 7-24

Troubl~hooting

th(:

Options 7-29

VIDEO

ALIGNMENT 7-30

Alignment

Template

7-30

Ma)(ing

aPapt:r

T(:mplat(:

7-31

Attaching the

T(:mplat(:

7-31

Monitor

Adjustments

7-32

Brightn~s

Acljustm(:nt 7-32

Yoke

Adjustment

7-32

V(:rtical Hdght Acljustm(:nt

7-33

Horizontal

Wiclth

Acljustm(:nt

7-33

Center

Adjustment

7-33

V(:rtical Lin(:arity Acljustm(:nt

7-33

Focus

Adjustment

7-34

•

7.7

7.7.1

7.7.2

7.7.3

7.7.4

7.7.5

7.7.6

7.7.7

7.7.8

7.7.9

7.7.10

7.7.11

7.7.12

7.7.13

7.7.14

7.7.15

7.7.16

7.7.17

7.7.18

7.7.19

7.7.20

7.7.21

7.7.21.1

7.7.21.2

7.7.22

7.7.23

7.7.23.1

7.7.23.2

7.7.23.3

7.7.23.4

APPENDIX A

A.l

A.2

A.2.1

A.2.2

A.2.3

A.2.4

A.2.5

A.2.6

A.2.7

A.2.8

A.2.9

A.2.1O

A.2.11

A.3

A.3.1

A.3.2

CONTENTS (Cont)

MODULE AND MECHANICAL ASSEMBLY REMOVAL

AND INSTALLATION 7-34

Cable Access Cover (Wort Cover) and Module Access Cover

(Rear

Shield) 0

•••••••••••••••••••••••••••••

••••••••

•••••••••••••••••

••••••••••

7-34

Disk Drive Unites) 7-36

VTl8X Control Module

7-37

Terminal Controller Module 7-

180

Paddle Board 7-

Advanced

Video

Option (A

VO)

7-38

Terminal Controller Module ROMs

7-38

Keyooard Top Cover 7-38

Keyooard 7-39

Keyooard Cable 7-39

Keyboard

SJ>eaker

7-40

Keycaps 7-40

Top Cover 7

-41

Video

Monitor Board (Digital or Elston) 7-42

Flyback Transformer (Digital or Elston) 7

-43

Bottom Cover Removal and Installation

7-43

Power Supply 7

-43

RF Shield Removal

7-45

Power Harness 7

-46

Expansion Backplane Removal.. 7

-4

CRT Discharge and Anode Cap 7

-4

CRTAnode Discharge 7

-4

Anode Cap Removal and Installation

7-48

CRTand Yoke Assembly 7-50

Field Handling of CRTs 7-50

Replacing aCRT

7-51

Handling the CRT 7-

StoringaCRT

7-51

Discarding aCRT

---;::-

7-51

VT180

PROGRAMMING INFORMATION

GENERAL INFORMATION A-I

180

KEyBOARD A-I

LED Indicators A-2

SET-UP

Key

A-2

Alphal>etic

Keys

A-2

Nonalphabetic Keys A-4

Function Keys

A-6

NO SCROLL

A-6

BREAK

A-6

CTRL (Control) A-7

Auto

ReJ>eating

A-8

Cursor Control Keys

A-8

Auxiliary Keypad

A-8

TERMINALCONTROLCOMMANDS A-I0

Control Characters -A-I0

ANSI Control Sequences

A-II

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