Rigel Corporation R-31JP User manual

R-31JP ASSEMBLY MANUAL
Version 1.0
July 24, 1998
RIGEL CORPORATION
P.O. Box 90040
Gainesville, Florida 32607
[phone]
http://www.rigelcorp.com

Copyright (C) 1996 by Rigel Corporation.
All rights reserved. No part of this document may be reproduced, stored in a retrieval system,
or transmitted in any form, or by any means, electronic, mechanical, photocopying, recording,
or otherwise, without the prior written permission of Rigel Corporation.
The abbreviation PC used throughout this guide refers to the IBM Personal Computer or its
compatibles. IBM PC is a trademark of International Business Machines, Inc.

Warranty
RIGEL CORPORATION - CUSTOMER AGREEMENT
1. Return Policy. If you are not satisfied with the items purchased, prior to usage, you may return them to Rigel
Corporation within thirty (30) days of your receipt of same and receive a full refund from Rigel Corporation.
You will be responsible for shipping costs. Please call [phone] prior to shipping. A refund will not be
given if the READS package has been opened.
2. READS and RROS License. The READS and RROS being purchased is hereby licensed to you on a non-
exclusive basis for use in only one computer system and shall remain the property of Rigel Corporation for
purposes of utilization and resale. You acknowledge you may not duplicate the READS or RROS for use in
additional computers, nor may you modify, disassemble, translate, sub-license, rent or transfer electronically
READS or RROS from one computer to another, or make it available through a timesharing service or
network of computers. Rigel Corporation maintains all proprietary rights in and to READS and RROS for
purposes of sale and resale or license and re-license. BY BREAKING THE SEAL AND OTHERWISE
OPENING THE READS PACKAGE, YOU INDICATE YOUR ACCEPTANCE OF THIS LICENSE
AGREEMENT, AS WELL AS ALL OTHER PROVISIONS CONTAINED HEREIN.
3. Limited Warranty. Rigel Corporation warrants, for a period of sixty (60) days from your receipt, that READS
disk(s), RROS, hardware assembled boards and hardware unassembled components shall be free of
substantial errors or defects in material and workmanship which will materially interfere with the proper
operation of the items purchased. If you believe such an error or defect exists, please call Rigel Corporation
at [phone] to see whether such error or defect may be corrected, prior to returning items to Rigel
Corporation. Rigel Corporation will repair or replace, at its sole discretion, any defective items, at no cost to
you, and the foregoing shall constitute your sole and exclusive remedy in the event of any defects in material
or workmanship.
THE LIMITED WARRANTIES SET FORTH HEREIN ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.
YOU ASSUME ALL RISKS AND LIABILITY FROM OPERATION OF ITEMS PURCHASED AND RIGEL
CORPORATION SHALL IN NO EVENT BE LIABLE FOR DAMAGES CAUSED BY USE OR
PERFORMANCE, FOR LOSS PROFITS, PERSONAL INJURY OR FOR ANY OTHER INCIDENTAL OR
CONSEQUENTIAL DAMAGES. RIGEL CORPORATION’S LIABILITY SHALL NOT EXCEED THE COST
OF REPAIR OR REPLACEMENT OF DEFECTIVE ITEMS.
IF THE FOREGOING LIMITATIONS ON LIABILITY ARE UNACCEPTABLE TO YOU, YOU SHOULD
RETURN ALL ITEMS PURCHASED TO RIGEL CORPORATION.
4. Board Kit. If you are purchasing a board kit, you are assumed to have the skill and knowledge necessary to
properly assemble same. Please inspect all components and review accompanying instructions. If
instructions are unclear, please return the kit unassembled for a full refund or, if you prefer, Rigel Corporation
will assemble the kit for a fee of $30.00. You shall be responsible for shipping costs. The foregoing shall
apply only where the kit is unassembled. In the event the kit is partially assembled, a refund will not be
available, however, Rigel Corporation can, upon request, complete assembly for a fee based on an hourly
rate of $50.00. Although Rigel Corporation will replace any defective parts, it shall not be responsible for
malfunctions due to errors in assembly. If you encounter problems with assembly, please call Rigel
Corporation at [phone] for advice and instruction. In the event a problem cannot be resolved by
telephone, Rigel Corporation will perform repair work, upon request, at the foregoing rate of $50.00 per hour.
5. Governing Law. This agreement and all rights of the respective parties shall be governed by the laws of the
State of Florida.

TABLE OF CONTENTS
1. INTRODUCTION ................................................................................................................................................... 1
2. SOLDERING.......................................................................................................................................................... 2
3. ASSEMBLY STEPS .............................................................................................................................................. 3
3.1 DISCRETE COMPONENTS (RESISTORS AND DIODES) ................................................................................................ 3
3.1.1 Resistors....................................................................................................................................................................3
3.1.2 Diode D3...................................................................................................................................................................4
3.2 SOCKETS............................................................................................................................................................... 4
3.3 RESISTOR NETWORK R1........................................................................................................................................ 5
3.4 PUSH BUTTON PB1................................................................................................................................................ 5
3.5 SLIDE SWITCH S1.................................................................................................................................................. 5
3.6 JUMPERS J1, J2, J3, J4, J5 .................................................................................................................................. 5
3.7 40 AND 23-PIN HEADERS J7, J9, AND J10 ............................................................................................................. 5
3.8 DISCRETE COMPONENTS (CAPACITORS AND CRYSTAL)............................................................................................ 6
3.8.1 Electrolytic capacitors................................................................................................................................................6
3.8.2 Non-polarized capacitors...........................................................................................................................................6
3.8.3 Crystal Y1 .................................................................................................................................................................6
3.9 LIGHT EMITTING DIODES (LEDS) D1 AND D2 ......................................................................................................... 6
3.10 POWER HEADER J6 ............................................................................................................................................. 6
3.11 TERMINAL BLOCKS J8.......................................................................................................................................... 6
3.12 DB-9 CONNECTOR P1......................................................................................................................................... 6
4. VISUAL INSPECTION........................................................................................................................................... 7
5. POWER SUPPLY TESTING ................................................................................................................................. 7
6. FUNCTIONAL TESTING....................................................................................................................................... 8
6.1 COMMUNICATING WITH THE PC HOST ..................................................................................................................... 8
7. PARTS LISTS...................................................................................................................................................... 10
7.1 R-31JP BILL OF MATERIALS................................................................................................................................. 10
7.2 SOCKET LIST ....................................................................................................................................................... 11
7.3 R-31JP COMPONENT CROSS REFERENCE............................................................................................................ 12

1. Introduction
The R-31JP is designed for easy assembly by the hobbyist or prototyping engineer. The
components are assembled on the top side as marked, i.e., the side with the silk screen
overlay of component outlines and designations. All of the integrated circuits are inserted into
sockets. The recommended sequence for manual assembly is as follows:
1. Discrete components (resistors, diodes)
2. Sockets (6 quantity)
3. Resistor network (1 quantity)
4. Push button (1 quantity)
5. Slide switch (1 quantity)
6. Jumpers (3 quantity)
7. 40 (1 quantity) and 23-pin headers (2 quantity)
8. Discrete components (capacitors, crystals)
9. Light Emitting Diodes - LEDs (2 quantity)
10. Power header (1 - 2 position terminal block)
11. Terminal Blocks (1 - 14 position block of terminals)
12. DB-9 Connector (1 quantity)
The board may then be tested.
The assembly and test steps are explained in detail in the following pages. Please refer to the
board layout for part placement locations. Depending on your experience, the assembly
process may take between 1 to 3 hours. It is highly recommended that you read all
instructions before starting the assembly process.

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2. Soldering
Use a low power (about 30 Watts) soldering iron. Heat the component lead and the pad with
the iron, and then apply solder to the lead and pad. Solder should be shiny in appearance.
Be careful not to deposit too much solder on the joints. The most common problem with board
assembly is shorted pins or tracks due to excessive solder.
Solder may be removed by solder-removal braid, also known as solder wick. Place the wick
over the solder and heat the solder through the wick. The wick will absorb the excess solder.
Use a good quality solder, such as Radio Shack’s silver bearing solder. Soldering is the most
important aspect of assembly. Please be patient and strive for excellence!
Please note that solder contains lead. Take the necessary precautions when working
with solder. Work in a well ventilated area. Do not inhale the solder vapors. Wash your
hands after soldering.

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3. Assembly Steps
Familiarize yourself with the board, the components, and the layout. Also refer to the bill of
materials at the end of this assembly manual.
slide switch
disc
capacitors
DB9 connecto
r
notch
Board layout
3.1 Discrete components (resistors and diodes)
3.1.1 Resistors
These resistors have no polarity. The resistor values are color coded. Hold the resistor so
that the color bands are to the left. A gold rightmost band indicates a 5% tolerance resistor,
and a silver band, a 10% tolerance resistor. The first 3 bands give the value. The first and the
second band are the two digits, and the third indicates the number of zeros to add after the
first two digits. The color code corresponding to each digit is shown below:

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0 Black 5 Green
1Brown 6Blue
2Red 7Violet
3 Orange 8 Grey
4 Yellow 9 White
For example, a 1K (1 Kilo Ohm) resistor is 1000 ohms. The first digit is 1 (Brown) and the
second digit is 0 (Black). After the first two digits two more zeros follow. The two zeros are
thus indicated by Red. The 1K resistor has a color code Brown-Black-Red. The R-31JP uses
4 resistors as follows:
Quantity Resistor value Color code, (left to right)
2 330 OHM 1/2 watt orange, orange, brown, gold
1 100 OHM 1/2 watt brown, black, black, gold
1 2.2K 1/4 watt red, red, red, gold
3.1.2 Diode D3
R-31JP uses the diode D3 (a 1N4001) across the supply voltage in reverse polarity. It shorts
the power supply if the power is applied backwards, thus protecting the R-31JP board. Diodes
are polarized. The cathode is marked on the diode with a band. The R-31JP board also
shows a line next to the cathode pad of the diode. Match the band on the diode with the line
on the board.
3.2 Sockets
Sockets use the same designation as the components they hold. Several different size
sockets are used. U6 uses a 16 pin socket, U1 uses a 20-pin socket, U3 uses a skinny 24 pin
socket, U4, and U5 use 28-pin sockets, and U2 uses a 40-pin socket. The 16, 20, and 24-pin
sockets are dual In-line Package (DIP) sockets with 300 mils between rows. The 28, and 40-
pin sockets are also DIP sockets, but with 600 mils between rows.
The DIP sockets all have a notch or mark on one end. This must be matched with the socket
pattern silk-screened on the board. When the notch is to the left, and viewed from the top, the
lower leftmost pin is pin 1. On the R-31JP board, the pads of pin 1 of the Integrated Circuits
(ICs) are square. All other IC pads are circular. The orientation of the sockets is critical.
You will be placing the ICs in the sockets using the notch for pin 1 identification. The board
will not work and the ICs may be damaged if they are populated backwards. If you do solder a
socket in backwards the board will still work, but you must be extremly careful to orient the
IC to the notch silk-screened on the board and not according to the notch on the
socket.

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3.3 Resistor network R1
R1 is a resistor network which contains 9 resistors with a common terminal. The common
terminal is marked on the resistor networks with a line or a dot. The R-31JP board is also
marked by a line where the common terminal is to be inserted. In addition, the pad for the
common terminal is square. The orientation of this resistor must be correct for the board to
work.
3.4 Push button PB1
PB1 is marked as RESET on the board. It is a small momentary push button. Press the push
button firmly in the holes so that it lays securely against the board. The push button resets the
board. It is also used when the low and high external memory locations are to be swapped in
the EPROM and RAM. In order to swap the locations, the reset button must be held down
while the slide swich is moved.
3.5 Slide Switch S1
The slide switch is below the LEDs on the board. The switch needs to be held firmly on the
board when soldered. The orientation is not important as the switch is symmetrical. Sliding
the swich between the MON and RUN locations changes the low and high external memory
locations. The default configuration is with the slide switch in the MON position, i.e., to the
right.
3.6 Jumpers J1, J2, J3, J4, J5
Jumpers J1, J2, J3, J4, J5 are headers which accept shorting jumpers to configure the R-
31JP.
J1, marked EA# on the board, is a 2 post header directly under P1.3/P1.4. in the center of the
board. A shorting jumper will need to be placed in this location to operate the board in the
default configuration.
J4 and J5 are 3 post headers marked ROM/RAM on the top overlay of the board. J4 and J5
have two positions, connecting the center post to either the right or the left post. These
jumpers are a 2 X 3 block of headers. Two shorting jumpers are placed in the (ROM) location
to operate the board in the default configuration.
J2 and J3 are 3 post headers marked P1.3 and P1.4 on the top overlay of the board. J2 and
J3 also have two positions, connecting the center post to either the left or the right post.
These jumpers are a 2 X 3 block of headers. These jumpers are not used in the normal
operation of the board.
3.7 40 and 23-Pin Headers J7, J9, and J10
JP7, JP9 and J10 are 40 and 23-post headers which are connected to the microcontroller
ports and to the system data, address and control signals. Access to all system signals are
gained through these headers. If the board is to be operated in a stand-alone fashion, these
headers need not be installed. Pin 1 of the header is marked on the board. Also, the pad for
pin 1 is square. Orient the headers so that the longer pins are on top of the board, the short
side of the pins go through the board and are solder on the bottom.

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3.8 Discrete components (capacitors and crystal)
3.8.1 Electrolytic capacitors
Capacitors C3 - C7 and C17 - C19 are electrolytic capacitors. Electrolytic capacitors are
polarized components. The R-31JP board is labeled with the values and the positive terminal
of the capacitors. The positive terminal of the capacitors is indicated by the (+) sign on the
board. The capacitors have labels to indicate their polarity and value. Often, the negative
terminal is indicated by a minus (-) sign.
3.8.2 Non-polarized capacitors
Capacitors C1, C2, and C8-C16 are disc capacitors without polarity. The value is usually
written on the capacitor. The 22 picofarad (pF) capacitor may only have 22 written on it. The
100 nanofarad (nF) capacitor may have 0.1 or .1 written on it, indicating 0.1 microfarads. Note
that 1000pF=1nF, and that 1000nF=1uF.
3.8.3 Crystal Y1
Y1 is the microcontroller clock crystal. The R-31JP kit comes with the 11.0592MHz crystal.
An 11.059 MHz crystal is convenient to generate almost all of the common Baud rates. The
crystal is not polarized. Crystals usually have metal enclosures and thus should not be
soldered touching the board. A sixteenth of an inch distance between the crystal and the
board will assure that the crystal case does not short any of the underlying tracks. The
READS software is written for the 11.0592MHz crystal frequancy.
3.9 Light Emitting Diodes (LEDs) D1 and D2
Either D1 or D2 is lit when the R-31JP is powered, depending on the position of the slide
switch. It is recommended that a red LED is used for D1 (MON) and a green LED for D2
(RUN).
The LEDs are diodes, and thus, their polarity must be observed. The LED has two leads. The
anode lead is the longer lead. In addition, the LED has a flat section on the rim of its base.
This flat cut designates the cathode. The R-31JP board designates the cathode by a line
going through the cathode pad. Match the flat side of the LED with the line on the board.
3.10 Power header J6
This header brings the 5 volt operating current to the board. A screw-type terminal block is
used. The positive terminal of J6 is marked by a ’+’ on the R-31JP board. Solder the terminal
blocks so that the wire insertion posts are accessible.
3.11 Terminal Blocks J8
These terminal blocks have solder tails with 3.5 separation. J8 is a 14 position terminal
blocked connected to PORT 1, 4 bits of PORT 3, ground and the 5+ volt power supply. The
terminal blocks may need to be assembled into a block of 14. This may be done by
interlocking the dove tails, on the sides of the terminal blocks, together. Solder the terminal
blocks so that the wire insertion posts are accessible.
3.12 DB-9 Connector P1
P1 is a short DB9 connector. Solder the pins and the catch pins to the board. P1 accepts the
serial modem cable that connects the R-31JP to the host PC.

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4. Visual Inspection
Most of the problems in assembling the R-31JP are due to faulty solder joints. Inspect each
solder joint. Look for missing solder, too much solder, shorts between pins or tracks due to
excessive solder. Remove excessive solder with solder wick. Care taken for a thorough
visual inspection often saves time in the long run.
5. Power Supply Testing
Before any of the ICs are inserted, connect a 5 Volt power supply to the power header JP6 on
the board. Verify the voltage on the Vcc and Ground pins of the sockets for U1, U2, U3, U4,
U5, and U6.
The ICs have a notch or mark on one end. This must be matched with the silk-screen
notch on the board. When the notch is to the left, and viewed from the top, the lower
leftmost pin is pin 1. Pins in the lower row are enumerated, from left to right. For example, the
last pin in the bottom row of U5 is pin 14. The pins on the upper row are enumerated from
right to left (thus, continuing in the counterclockwise direction). The rightmost pin in the top
row of U5 is pin 15, and the leftmost, pin 28.
IC
socket IC Vcc pin Ground pin
U5 27C256 28 14
U4 62C256 28 14
U1 74HC573 20 10
U2 8031 40 20
U6 MAX232 16 15
U3 GAL20V8 24 12
If supply voltages are not observed, inspect all tracks, connections, and solder joints.

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6. Functional Testing
You are now ready to insert the ICs and test the functionality of the board. In order to prevent
permanent damage to the ICs, do not attempt this step if discrepancies were observed during
the prior tests. Please note that all of the ICs are CMOS (Complementary Metal Oxide
Semiconductors), which are affected by static. Do not insert or remove the ICs while the
power is connected to the R-31JP. Also avoid exposure to static electricity. For example,
the ICs may be zapped by static electricity collected on a sweater. Ground yourself, or touch a
good conductor to ground before handling the ICs.
Disconnect the power. Insert the ICs, observing their orientation. The ICs have a notch or
mark on one end. This must be matched with the notch on the board overlay and should
match the notch on the socket.
Shorting jumpers will need to be placed in jumper EA# and in the J4 and J5 ROM locations to
operate the board in the default configuration. Connect the power supply. Move the slide
switch to the MON (right) position. The MON indicator, the red LED, should light up. Press
the reset button.
6.1 Communicating with the PC Host
Connect the R-31JP to either the COM1 or the COM2 port of the host PC. Run READS.
Once in Reads select the demo program Deom00.ASM. Once in the editor, press F10 for the
menu. Select Options to specify which port you are using. Set the communication parameters
to 9600 Baud rate, 8 data bits, and 1 stop bit. Save the options so that next time you run
READS you need not configure the host. Note that from the editor, you may press the Alt-O
hot key combination to activate the options menu.
Activate the menu again (F10) and select TTY to talk to the board. Alternatively, you may
press the Alt-T hot key combination to activate the communications environment. Press the
RESET button on the R-31JP. The greeting message "8052 monitor" followed by the
asterisk should appear. Press H (or h, since the monitor program is case insensitive) to
activate the monitor help screen.
From the host keyboard, type
x8000-ffff=0
which will fill the RAM chip with 0s. Verify by typing
x8000-ffff
A Control-C aborts the memory dump. Repeat this test with different values, such as:
x8000-ffff=1
and
x8000-ffff=a

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Next, assemble the various demonstration programs given on the distribution disk. Download
the object codes and run on the R-31JP. Refer to the R-31JP/READS User’s Guide and the
program listings for specific information on the demonstration programs.

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7. Parts Lists
7.1 R-31JP Bill of Materials
The bill of materials given below lists all components by their reference as they appear on the
board top overlay. Note that this list does not include the sockets.
Revised: July 24, 1998
List Of Materials
Item Quantity Reference Part Description
1 2 C1, 2 22pF Disk capacitor
2 1 C3 2.2uF Electrolytic capacitor
3 4 C4-C7 1uF Electrolytic capacitor
4 9 C8-C16 100nF Disk capacitor
5 1 C17 470uF Electrolytic capacitor
6 2 C18, 19 47uF Electrolytic capacitor
7 1 R1 10K Gang Resistor
8 1 R2 2.2K 1/4 Watt Resistor
9 1 R3 100 1/2 Watt Resistor
10 2 R4, 5 330 1/2 Watt Resistor
11 1 D1 MON LED (red)
12 1 D2 RUN LED (green)
13 1 D3 1N4001 Diode
14 1 S1 MON/RUN Slide Switch
15 1 PB1 RESET Push-button
16 1 P1 RS232 DB9
17 1 J1 EA# 2-pin header
18 1 J2 CFG0 3-pin header
19 1 J3 CFG1 3-pin header
20 1 J4 PIN1 3-pin header
21 1 J5 PIN27 3-pin header
22 1 J6 PWR Terminal block (2)
23 1 J7 SIGNALS 40-pin header
24 1 J8 PIO Terminal blocks (14)
25 1 J9 BUS 1 23-pin header
26 1 J10 BUS 2 23-pin header
27 1 U1 74HCT573 Octal latch
28 1 U2 8031 Microcontroller
29 1 U3 GAL20V8
30 1 U4 62256 32K Static RAM
31 1 U5 27C256 32K EPROM
32 1 U6 MAX232 Serial
33 1 Y1 11.059 MHz Crystal

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7.2 Socket List
Item Quantity Reference Description
1 1 U1 20 Pin dip socket (machine screw)
2 1 U2 40 Pin dip socket (machine screw)
3 1 U3 24 Pin skinny dip socket (machine screw)
4 2 U4, U5 28 Pin dip socket (machine screw)
5 1 U6 16 Pin dip socket (machine screw)

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7.3 R-31JP Component Cross Reference
The following is a list of components as they appear in the circuit diagrams. Note that the
circuit diagrams are presented as a hierarchy. The sheet name and number indicate which
sheet in the hierarchy the component belongs to. The part field gives component names as
they appear in the diagrams.
Cross Reference:
Revised: October 5, 1994
Item Reference Part Sheetnam
eSheetnumb er
1 C1 22pF CPU 2
2 C2 22pF CPU 2
3 C3 2.2uF DECODE 3
4 C4 1uF SERIAL 5
5 C5 1uF SERIAL 5
6 C6 1uF SERIAL 5
7 C7 1uF SERIAL 5
8 C8 100nF SERIAL 5
9 C9 100nF SERIAL 5
10 C10 100nF SERIAL 5
11 C11 100nF SERIAL 5
12 C12 100nF SERIAL 5
13 C13 100nF SERIAL 5
14 C14 100nF SERIAL 5
15 C15 100nF SERIAL 5
16 C16 100nF SERIAL 5
17 C17 470uF SERIAL 5
18 C18 47uF SERIAL 5
19 C19 47uF SERIAL 5
20 R1 10K CPU 2
21 R2 2.2K DECODE 3
22 R3 100 DECODE 3
23 R4 330 DECODE 3
24 R5 330 DECODE 3
25 D1 MON DECODE 3
26 D2 RUN DECODE 3
27 D3 1N4001 SERIAL 5
28 S1 MON/RUN DECODE 3
29 PB1 RESET DECODE 3
30 P1 RS232 SERIAL 5
31 J1 EA# CPU 2
32 J2 CFG0 DECODE 3
33 J3 CFG1 DECODE 3
34 J4 PIN1 MEMORY 4
35 J5 PIN27 MEMORY 4
36 J6 PWR SERIAL 5

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37 J7 SIGNALS PIO 6
38 J8 PIO PIO 6
39 J9 BUS 1 PIO 6
40 J10 BUS 2 PIO 6
41 U1 74HCT573 CPU 2
42 U2 8032 CPU 2
43 U3 GAL20V8 DECODE 3
44 U4 62256 MEMORY 4
45 U5 27C256 MEMORY 4
46 U6 MAX232 SERIAL 5
47 Y1 11.059 MHz CPU 2