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EPC®-23
Hardware Reference
®
RadiSys Corporation
15025 S.W. Koll Parkway
Beaverton OR 97006
(503) 646-1800
FAX: (503) 646-1850
______________________________________________________________________
07-0161-01 July 1993
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EPC-23 Hardware Reference
EPC and RadiSys are registered trademarks of RadiSys Corporation. OS/2, IBM, and
PC/AT are trademarks of International Business Machines Corporation. Microsoft
Windows and MS-DOS are registered trademarks of Microsoft Corporation. Intel
and Intel486 SL are trademarks of Intel Corporation.
April 1993
Copyright ©1993 by RadiSys Corporation
All rights reserved.
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EPC-23 Hardware Reference
Hardware Warranty
RadiSys Corporation ("RadiSys") warrants the EPC system and component modules
to the original purchaser for two years from the product's shipping date. If an EPC
product fails to operate in compliance with its specification during this period,
RadiSys will, at its option, repair or replace the product at no charge. The customer
is, however, responsible for shipping the product; RadiSys assumes no responsibility
for the product until it is received. This warranty does not cover repair of products
that have been damaged by abuse, accident, disaster, misuse, or incorrect installation.
RadiSys' limited warranty covers products only as delivered. User modification, such
as the addition of memory arrays or other devices, may void the warranty, and if the
product is damaged during installation of the modifications, this warranty does not
cover repair or replacement.
This warranty in no way warrants suitability of the product for any specific
application.
IN NO EVENT WILL RADISYS BE LIABLE FOR ANY DAMAGES,
INCLUDING LOST PROFITS, LOST SAVINGS, OR OTHER INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY
TO USE THE PRODUCT EVEN IF RADISYS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY PARTY
OTHER THAN THE PURCHASER.
THE ABOVE WARRANTY IS IN LIEU OF ANY AND ALL OTHER WAR-
RANTIES, EXPRESSED OR IMPLIED OR STATUTORY, INCLUDING THE
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE OR USE, TITLE AND NONINFRINGEMENT. Repair or replacement
as provided above shall be the Purchaser's sole and exclusive remedy and RadiSys'
exclusive liability for any breach of warranty.
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EPC-23 Hardware Reference
NOTES
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EPC-23 Hardware Reference
Table of Contents
1. Product Description ............................................................................................... 1
Specifications ....................................................................................................... 2
2. Installation and Configuration ............................................................................. 3
Insertion in an EXM Carrier ................................................................................ 3
Available Chassis.................................................................................................. 4
Power-On Screen Display .................................................................................... 5
BIOS Setup Screen .............................................................................................. 6
EXM Setup Screen ............................................................................................... 8
Fixed Disk Menu ................................................................................................. 10
User-Definable Drive Types .......................................................................... 11
3. Theory of Operation .............................................................................................. 13
Processor and Coprocessor .................................................................................. 13
Memory ................................................................................................................ 13
Memory Expansion ....................................................................................... 14
Memory Map ................................................................................................. 15
ROM and ROM Shadowing ................................................................................. 16
Battery .................................................................................................................. 16
Video Controllers ................................................................................................. 17
Front Panel LED .................................................................................................. 17
Resetting the EPC ................................................................................................ 18
4. Connectors ............................................................................................................. 19
Serial Ports ........................................................................................................... 19
Keyboard .............................................................................................................. 20
EXM Expansion Connector ................................................................................. 20
EXM Expansion Connector Signals .................................................................... 21
5. Troubleshooting & Error Messages ..................................................................... 27
Troubleshooting ................................................................................................... 27
Common Error Messages ..................................................................................... 28
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EPC-23 Hardware Reference
6. Support and Service .............................................................................................. 35
In North America ................................................................................................. 35
Technical Support .......................................................................................... 35
Bulletin Board ................................................................................................ 35
Repair Services............................................................................................... 36
Warranty Repairs............................................................................................ 36
Non-Warranty Services.................................................................................. 36
Arranging Service........................................................................................... 37
Other Countries..................................................................................................... 38
Appendix A: Mechanical Dimensions ...................................................................... A1
Figures
Figure 1. EMC-CH6D Chassis on an 8-Slot Backplane....................................... 4
Figure 2. EPC-23 POST Display ......................................................................... 5
Figure 3. EXM Main Setup Screen....................................................................... 6
Figure 4. EXM Setup Screen................................................................................ 8
Figure 5. EXM Slot Numbering............................................................................ 9
Figure 6. Fixed Disk Menu Screen ....................................................................... 10
Figure 7. Memory Chip Locations........................................................................ 13
Figure 8. Battery Replacement.............................................................................. 14
Figure 9. EPC-23 Mechanical Dimensions........................................................... A1
Tables
Table 1. EPC-23 Environmental and Electrical Specifications ............................ 2
Table 2. Fixed Disk Conversion Values ............................................................... 11
Table 3. SIMM Organization for 0 MBytes Base Memory .................................. 14
Table 4. SIMM Organization for 4 MBytes Base Memory .................................. 14
Table 5. Memory Map .......................................................................................... 15
Table 6. DB-9 Pin-out........................................................................................... 19
Table 7. RJ45 Jack Pin-out ................................................................................... 19
Table 8. Keyboard Connector Pin-out .................................................................. 20
Table 9. EXM Expansion Card A-Row Pin-out ................................................... 20
Table 10. EXM Expansion Card B-Row Pin-out.................................................. 21
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11
1. Product Description
The EPC-23 is a PC/AT compatible CPU module in a very small form factor.
Based on the Intel486 SL chip set, this EPC has been designed to meet
stringent safety and low EMI standards (UL-1950). All front panel accessible
ports have filter networks for reduced EMI and increased ESD protection.
The EPC-23 processor module contains the following:
•A 25 MHz Intel486 SL processor
•Integrated math coprocessor
•8 Kbytes of integrated SRAM cache
•4 MBytes of DRAM memory expandable to 12 MBytes
•Keyboard interface
•1 standard 9-pin DTE serial port (COM1)
•1 RJ45 serial port (COM2)
•Time-of-day clock with user-replaceable battery
•Award BIOS
•EXM expansion interface (electrically similar to the 16-bit PC/AT ISA
bus)
WARNING!
DO NOT PLUG IN ANY CABLE OR CONNECTOR INTO THE FRONT PANE
CONNECTORS WHILE THE EPC-23 IS OPERATNG. THIS SYSTEM IS NO
T
DESIGNED FOR "HOT INSERTION" WHILE THE SYSTEM IS POWERED
UP, AND IS NOT DESIGNED TO WITHSTAND POTENTIAL DAMAGE THA
T
COULD ARISE FROM FLUCTUATIONS IN POWER. NEVER PLUG IN A
SERIAL OR PARALLEL DEVICE, KEYBOARD, TRANSCEIVER, OR OTHER
COMPONENT WHILE THE SYSTEM IS ON.
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EPC-23 Hardware Reference
11
Specifications
The following table lists the environmental and electrical specifications of the
EPC-23.
Environmental
Temperature operating 0°to 60°C (* see below)
storage -40°to 125°C
Humidity operating 0 - 95% (non-condensing)
storage 0 - 95% (non-condensing)
Vibration operating .015" Peak to Peak 2.5g (max) 5-2000 Hz
storage .030" Peak to Peak 5g (max) 5-2000 Hz
Shock operating 30g 11 msec duration
storage 50g 11 msec duration
Electrical
Power maximum +5V @ 1.25 A
typical +5V @ 1.1 A
Table 1. EPC-23 Environmental and Electrical Specifications.
* Upper temperature limit degrades 2°C per 1000 ft. elevation. Maximum
elevation 10,000 ft.
See Appendix A for mechanical dimensions.
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2. Installation and
Configuration 22
Before installing the EPC-23, unpack and inspect it for shipping damage.
DO NOT REMOVE THE MODULE FROM ITS ANTI-STATIC BAG
UNLESS YOU ARE IN A STATIC-FREE ENVIRONMENT.THE EPC-23,
LIKE MOST OTHER ELECTRONIC DEVICES,IS SUSCEPTIBLE TO ESD
DAMAGE.ESD DAMAGE IS NOT ALWAYS IMMEDIATELY OBVIOUS,
IN THAT IT CAN CAUSE A PARTIAL BREAKDOWN IN SEMICON-
DUCTOR DEVICES THAT MIGHT NOT IMMEDIATELY RESULT IN A
FAILURE.
ENSURE THAT THE INSTALLATION PROCESS AS DESCRIBED HEREIN
IS ALSO PERFORMED IN A STATIC-FREE ENVIRONMENT.
Insertion in an EXM Carrier
Insertion of the EPC-23 into an EXM carrier is straightforward. Remove a blank
EXM panel from the carrier (by unscrewing the thumbscrews) and insert the
EPC-23 into the card guides. Firmly press the EPC-23 front panel to ensure that the
module is properly seated in the subplane and secure it with the thumbscrews.
MAKE SURE THAT POWER TO YOUR SYSTEM IS OFF.THE EPC-23 IS
NOT DESIGNED TO BE INSERTED OR REMOVED FROM A LIVE
SYSTEM.
WHEN INSERTING THE EPC-23,AVOID TOUCHING THE CIRCUIT
BOARD,AND MAKE SURE THE ENVIRONMENT IS STATIC-FREE.
INSERT IT WITH ADEQUATE CONTINUOUS FORCE RATHER THAN
TAPPING OR HAMMERING ON IT.
Page 3
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