Tektronix MicroLab | User manual

TEK INSTRUCTION PartNo: 070-2827-01
MANUAL Product Group 64
MicroLab|
067-0892-00/01/02/03/04
Instruction Manual
Tektronix
IOIRCLLENGR

TEK INSTRUCTION Part No. 070-2827-01
MANUAL, Product Group 61
MicroLab|
067-0892-00/01/02/03/04
Instruction Manual
Please check for change information
at the rear of this manual
First Printing DEC 1983 Tekt ry.
kronix
Revised APR 1984
(0 TO EXCELLENCE

Copyright ©1983 by Tektronix, Inc. All rights reserved.
Contents of this publication may not be reproduced in any
form without the permission of Tektronix, Inc.
Products of Tektronix, Inc. and its subsidiaries are covered
by U.S. and foreign patents and/or pending patents.
TEKTRONIX, TEK, SCOPE-MOBILE, and et are regis-
tered trademarks of Tektronix, Inc. TELEQUIPMENT is a
registered trademark of Tektronix U.K. Limited.
There is no implied warranty of fitness for aparticular
Purpose. Tektronix, Inc. is not liable for consequential
damages.
Specification and price change privileges are reserved.
Printed in U.S.A.

MicroLab |Instruction
PREFACE
Introduction
This Instruction Manual supports the TEKTRONIX
MicroLab|, atest fixture and demonstration aid for
TEKTRONIX microprocessor development products.
Documentation Overview
The MicroLab! support documentation consists of one
primary manual (this MicroLab |Instruction Manual) and
several supplemental manuals, one for each of the
MicroLab |personality cards.
About This Manual
This manual is divided into twoparts. The first part of this
manual explains the operating structure of the MicroLab I,
and the commands that affect the operation of the
MicroLab |.
The second part of this manual contains servicing
information, and is designed to be used bytrained service
technicians. This manual is not designed asatraining tool.
The intent is to provide adetailed theory of operation that
will allow atechnician to locate aproblem to aparticular
component onacircuit board.
WARNING }
The second half of the manual explains the internal
workings of the MicroLab|, and contains servicing
instructions that are for use by qualified personnel
only. Don’t perform any servicing other than that
contained in the operating part of this manual unless
you are qualified to do so.
Revision History
Revision history information is included in the text and
diagrams as they are revised and reprinted. Original
manual pages have an @symbol in the bottom inside
corner of the page. Existing pages of amanual, when
revised, have arevision code and datein place of the @
symbol. New pages added to asection, whether they
contain old, new, or revised information, will have the @
symbol
Slashed Zeros (9)
Zeros are slashed in this manual only when needed for
clarity.
Hexadecimal Notation
All addresses are in hexadecimal notation except where
otherwise noted.
Change Information
Change information is located in the back of this manual in
the CHANGE section. Change information should be
entered into the body of the manual when the manual is
received.

MicroLab |Instruction
CONTENTS
Page
PREFACE) ocean action ste sarenosemacAnees fenstenssasouns iTHE FOLLOWING SERVICING INSTRUCTIONS ARE
FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID
PERSONAL INJURY, DO NOT PERFORM ANY SER-
VICING OTHER THAN THAT CONTAINED IN OPERA-
TING INSTRUCTIONS UNLESS YOU ARE QUALIFIED
OPERATORS SAFETY SUMMARY .TO DO So.
SECTION 1GENERAL INFORMATION ease
Introduction to MicroLab |Sl ese oeCON Sa INS TALEATION
Puce ee Uae ce SsINOHUNIONS coon lnm ma Cen OR eee Teast 44
Testing...... 11 Packaging ........ 41
Demonstration .14 Site Considerations .41
Overview .... a4 Power Consumption
nerves
scinracs.
soni atecuie 4a
Features... 1-2 Power Sources 41
Front Panel .pie2 Fuses ..... aa
pore. ano Other Considerations ....... ena
Manne Ae Personality Card Installation .4-2
Discrestics ee Checking Out the MicroLab |4-2
Firmware.. SECTION 5MICROLAB |THEORY OF OPERATION
Functional Overview .........sc00seeeceees Poonee Sau
MicroLab 1/Personality Card Communications. ats eee ae
The MicroLab |Monitor ............0ce000 11-3 PesanaltyiceTas. =
SECTION 2. OPERATOR FAMILIARIZATION OS EIVIEW ese Epil
PopiersUpoyainaave ewan obo,
lnteochon arrestoaeou ce mA pene sich
Demonstration Run cheng. eh
Code TED aae Switches and Transformer ......0.2.000cs0000000 5-4
Keypad Definitions 22 SPOGi =
‘aeaaee :ae +12 Volt Supply .. =
introduction .a
eecee totePeoe
pepe: Reco dey eeECO SESS BA eae Zz Communications .........+. 5-5
Using the MicroLab
|
Cassette
ane Storage System 26 teSie
aay
eae a
Storing Files ...... .2-6 :
Roading WFiless.csc:anceeae es 27 Reser Girenitive: ecze!
|Can't Get The Tape To Load. What Do |Do? ... 2-7 MECao ty ee enbae
Programming FI—F8 ........0000ecc0ceceeee esses 27 SeeRea :ae
Using PROM to Store the Key Vector Table .128 Sew, er
Using the MicroLab |with aTerminal .2-8 16-Bit Operation
:
6.6
Connecting the Terminal.........+.. 29 paneeR a
The Terminal 1/0 Locations .2Wie ee
The Terminal Port Connector 2-9 Aeon Menic a
Using the RS-232-C MODEM Port 129 :
vateWee ank saa ee otras She 5-7
Programming the MicroLab |Display and Keypad ... 2-10 Latch Address Decoder ............. 5-8
Reading the Keypad ............1+s0seeeeeeeeee 22-10 High-Order Address Latch/Comparator .5-8
Writing to the Display es....542...s-cccnsses eva sess 2-10 ee ae ane as
Raises nares ok Gt AM aa ow-Order Address Latch/Comparator...........6.+ 4
Qualifying Logic -5-8
Salt Testes cect cpeenene: 242 5a as 8
WietGell Testen nyc prtaet iota oe 2-12 ‘aee
ee ::thes ae Don't’ Gare Latch <<cavs ca ccncoys davies cecece 5-9
HOF COURS «ns eeeer eevee Reon Eale es
Using the Expansion Connector .2-14 aes
Hicationss mer =. eit asnuncun een erences FAG
ee
eee 3ss
Sheeitieavions 2AND cheer, Son an Oe ee ese 5-9
SECTION 3. PERSONALITY CARD OPERATOR
FAMILIARIZATION

SECTION 5 (Cont.) Page
5-10
5-10
5-10
5-11
5-11
Breakpoint Delay Counter
Breakpoint Status and Control Registers
The Serial 1/0 Ports ......
Baud and Clock Generator.
Terminal Port............ i
MODEM Port .6-11
Cassette Port. -. 6-11
The Modulator, «<i .0<;aecienarssenmossser seers 5-11
The Demodulator 26-12
\/O Decoding. ...... 526-14
DRRBIAVTCAGIGSE, SixtadslGs perare eee5-14
Display RAM .26-14
Display Enable .225-14
Writing to the Display RAMEE ie eos 5-14
Reading the Display RAM .5-15
Character Counter......... 25-15
Sean Decodar «isets <ssceerapencrsuanesies eee 5-15
Keypad Encoding ........ 5-16
SPECIAL Key Debounce .5-17
InenUnp Gags ce enee5-17
-5 Volt Regulator and +5 Volt Crowbar............. 5-17
SECTION 6CALIBRATION PROCEDURE
SONICS ere has doh go cere neh eens cena teen eeaA 6-1
MicroLab |Disassembly..........2...000eecs0sseeeeeeees 61
Separating the Cabinet Halves........ 6-1
Removing the Main Interconnect Board 6-2
Gaining Access to the Power Supply .63
Removing the Keypad/Display Board 6-4
Power Supply Calibration ......... 165
-12 Volt Adjustment .6-5
+12 Volt Adjustment .6-6
+5 Volt Adjustment. -6-6
SECTION 7MAINTENANCE AND TROUBLESHOOTING
AihtrodOCtloncsae eases unc acneetacmaeeen ance WA
Static-Sensitive Devices..............025 FA
Reducing Susceptibility to Static Discharge. A
Preventive Maintenance. 7
Cleaning .. 7A
Exterior .72
Interior ....... a2
Visual Inspection .12
Troubleshooting... |7-2
Troubleshooting Aids .72
Diagrams 7-2
Circuit Board Illustrations 7-2
Capacitor Marking 73
Diode Codes. e13
Obtaining Baplecemant Paris) .7-4
Parts Repair and Exchange Program ..............06. 7-4
SECTION 8 REPLACEABLE ELECTRICAL PARTSLIST
SECTION 9 DIAGRAMS
SECTION 10 REPLACEABLE MECHANICAL PARTS LIST
SECTION 11 PERSONALITY CARD SERVICE
REV AJUN 1980
Table of Contents—MicroLab |Instruction
ILLUSTRATIONS
Fig. No. Page
The TEKTRONIX MicroLab |.........000eeceeeeeee vi
1-1 MicroLab |and Personality Card Block Diagram .... 1-3
2-1 The MicroLab |Keypad ..........6ccceeceeeeeeeeee 22
2-2 The MicroLab |Cassette Port... :126
2-3. The MicroLab |RS-232-C Ports 728
2-4 The MicroLab |Terminal Port Status Byte ........ 2-9
2-5 The MicroLab |Keypad Byte....... 2-10
2-6 The MicroLab |Display Organization... 211
2-7 Expansion Connector Cable .............66605 214
4-1 Installing APersonality Card...........00000000004 42
4-2 MicroLab |Baud Selection..............0000000004 43
5-1 Example of Text Heading .251
5-2 MicroLab |Block Diagram 5abo
5-3 Keypad/Display Block Diagram................ 5-3
5-4 MicroLab |Memory Configuration. .5-6
5-5 Breakpoint Logic Block Diagram... 257.
5-6 Timing Diagram for the “Kansas City Standard
++ 5-11
5-7 2400 Hz ("1") Timing 5-13
5-8 1200 Hz ("1") Timing -5-13
5-9 The Display RAM Bit Format .................... 5-14
5-10 MicroLab |Display Block Diagram ............... 5-15
6-1 Looking at the Bottom of the MicroLab |
6-2 Main Interconnect Board Cable Locations .
6-3 Personality Card Guide Rails and
High Voltage Protective Cover ...............
6-4 The Cabinet Top Containing the
Keypad/Display Board .........
6-1
6-2
6-3
6-4
6-5 MicroLab |Power Supply Adjustment
Sadia RT LE 6-5
7-1 Tantalum Capacitor Color Code ..................5 7-3
7-2 Diode Polarity Marking ................000005 ae
7-3 Pin Configuration for Semiconductor Components -- 7-4
TABLES
Table No. Page
2-1 The Example Personality Card Key Vector Table... 2-7
2-2 The RS-232-C Port Connector Configuration....... 2-9
2-3. MicroLab |Key Codes............ .2-10
2-4 MicroLab |Display Characters .... 2-11
2-5 Electrical Characteristics .......... 2-16.
2-6 Environmental Characteristics ..... Dasa eitee= ae
2-7 Physical Characteristics .-2-16
4-1 MicroLab |Fuse Requirements. 41

Installation—MicroLab |Instruction
OPERATORS SAFETY SUMMARY
The general safety information in this part of the summary
is for both operating and servicing personnel. Specific
warnings and cautions will be found throughout the
manual where they apply, but may not appear in this
summary.
Terms
In This Manual
CAUTION statements identify conditions or practices that
could result in damage to the equipment or other property.
WARNING statements identify conditions or practices that
could result in personal injury or loss oflife
As Marked on Equipment
CAUTION indicates apersonal injury hazard not
immediately accessible as one reads the marking, or a
hazard to property including the equipment itself.
DANGER indicates apersonal injury hazard immediately
accessible as one reads the marking.
Symbols
In This Manual
This symbol indicates where applicable cautionary or
other information is to be found.
As Marked on Equipment
4DANGER high voltage.
©Protective ground (earth) terminal.
ZA ATIENTION—refer to manual.
Grounding the Product
This product is grounded through the grounding conductor
of the power cord. To avoid electrical shock, plug the power
cord into aproperly wired receptacle before connecting to
the power input or output terminals. Aprotective ground
connection by way of the grounding conductor in the power
cord is essential for safe operation.
Use the Proper Power Cord
Use only the power cord and connector specified for your
product.
Use only apower cordthat is in good condition.
Refer cord and connector changes to qualified service
personnel.
Use the Proper Fuse
To avoid fire hazard, use only the fuse specified in the parts
list for your product, and which is identical in type, voltage
rating, and current rating
Refer fuse replacement to qualified service personnel.
Do Not Operatein Explosive
Atmospheres
To avoid explosion, do not operate this product in an
atmosphere of explosive gases unless it has been
specifically certified for such operation.
Do Not Remove Coversor Panels
To avoid personal injury, do not removethe product covers
or panels. Do not operate the product without the covers
and panels properly installed.
®

Safety Summary—MicroLab |Instruction
SERVICING SAFETY SUMMARY
FOR QUALIFIED SERVICE PERSONNEL ONLY
Refer also to the preceding Operators Safety Summary.
Do Not Service Alone
Do not perform internal service or adjustment of this
product unless another person capable of rendering first
aid and resuscitation is present.
Use Care When Servicing With Power
On
Dangerous voltages exist at several points in this product.
To avoid personal injury, do not touch exposed connections
and components while power is on.
Disconnect power before removing protective panels,
soldering, or replacing components.
Power Source
This product is intended to operate from apower source
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor and
ground. Aprotective ground connection by way of the
grounding conductor in the power cord is essential for safe
operation.

MicroLab |Instruction
2827-1
The TEKTRONIX MicroLab I.
vi REV AJUN 1980

MicroLab |Instruction
Section 1
GENERAL INFORMATION
Introduction To MicroLab|
The MicroLab |is atool used to test and demonstrate
microprocessor/microcomputer development systems.
The MicroLab |can be “personalized” to actlike any of a
number of microprocessor- or microcomputer-based
computers.
NOTE
For purposes of simplicity, referencesin this manual
to the term microprocessor will apply equally to
microcomputer devices, except where otherwise
Stated.
Purpose
The MicroLab |is designed to take the place of prototype
equipment in an environment where amicroprocessor
development system is demonstrated or tested. The
functions of the MicroLab |are:
©to test an Emulator Processor and its Prototype Control
Probe.
@to demonstrate the use of an Emulator Processor, and at
the same time, amicroprocessor development system.
The following paragraphs briefly describe each of these
functions.
Testing
The MicroLab |provides acircuit with known
characteristics. This allows an Emulator Processor and
Prototype Control Probeto be checked for proper operation.
There are also tests contained in the MicroLab |operating
system that are designed to excercise the Emulator
Processor and its probe.
Demonstration
The MicroLab |acts like aprototype circuit, which allows
the capabilities of an Emulator Processor to be
demonstrated.
Overview
The MicroLab |supports awide variety of microprocessors
and microcomputers. In order to make the MicroLab |
perform like aspecific microprocessor-based product, a
circuit board called a“personality card” is connected
through the MicroLab |front panel. The personality card
contains circuitry and firmware that, in effect, cause the
MicroLab |to become aspecific microprocessor-based
computer.
The MicroLab |mainframe contains the general interface
logic (including 1/O ports, RAM, keyboard and display) used
by all the personality cards. Therefore, to make the
MicroLab |act like an 8085-based computer, all that’s
required is an 8085 Personality Card.
Most personality cards contain amicroprocessor or
microcomputer device. The device is located in azero-
insertion-force (ZIF) socket. When the MicroLab |is used to
test or demonstrate an Emulator Processor, the device is
removed, and the Prototype Control Probe plug is inserted
into the socket.
1-1