WinSystems EBC-BX User manual

OPERATIONS MANUAL
EBC-BX
WinSystems reserves the right to make changes in the circuitry
and specifications at any time without notice.
Copyright 2003 by WinSystems. All Rights Reserved.

REVISION HISTORY
P/N 403-0307-000
ECO Number Date Code Rev Level
ORIGINATED 030124 B
03-57 030923 C

TABLE OF CONTENTS
Section Paragraph Page
Number Title Number
1General Information
1.1 Features 1-1
1.2 General Description 1-1
1.3 Specifications 1-2
2EBC-BX Technical Reference
2.1 Introduction 2-1
2.2 Intel FW82430BX Chipset 2-1
2.3 Memory Installation 2-1
2.4 Interrupt Routing 2-2
2.5 Power/Reset Connections 2-3
2.6 Mouse Interface 2-3
2.7 Real Time Clock/Calendar 2-4
2.8 Keyboard Interface 2-4
2.9 Serial Interface 2-5
2.10 Parallel Printer Port 2-12
2.11 Speaker/Sound Interface 2-12
2.12 PC/104 Interface 2-12
2.13 PC/104-Plus Bus Interface 2-13
2.14 Floppy Interface 2-14
2.15 IDE Hard Disk Interface 2-15
2.16 Watchdog Timer Configuration 2-16
2.17 Status LED 2-16
2.18 Battery Select Control 2-16
2.19 DiskOnChip Configuration 2-17
2.20 Parallel I/O 2-18
2.21 VGA Configuration 2-21
2.22 Ethernet Controller 2-23
2.23 Fan Power Connector 2-24
2.24 Multi-I/O Connector 2-25
2.25 USB Connector 2-25
2.26 Jumper/Connector Summary 2-26
3Award BIOS Configuration
3.1 General Information 3-1
3.2 Entering Setup 3-1
3.3 Setup Main Menu 3-1
3.4 Standard CMOS Setup 3-2
3.5 Advanced BIOS Features Setup 3-6
3.6 Chipset Features Setup 3-11
3.7 Integrated Peripherals Setup 3-14
3.8 Power Management Setup 3-19
3.9 PnP/PCI Configuration 3-23

3.10 PC Health Status 3-25
3.11 Frequency/Voltage Control 3-25
3.12 Load BIOS Defaults 3-26
3.13 Set Supervisor Password 3-27
3.14 Set User Password 3-27
3.15 Save & Exit Setup 3-27
3.16 Exit without Saving 3-27
4EBC-BX DiskOnChip Configuration
4.1 DiskOnChip Usage 4-1
4.2 DOC Initialization 4-1
5WS16C48 Programming Reference
5.1 Introduction 5-1
5.2 Function Definitions 5-1
5.3 Sample Programs 5-6
APPENDIX A I/O Port Map
APPENDIX B Interrupt Map
APPENDIX C EBC-BX Parts Placement Guide
APPENDIX D EBC-BX Parts List
APPENDIX E EBC-BX Mechanical Drawing
APPENDIX F WS16C48 I/O Routines and Sample Program Listings

1General Information
1.1 Features
nIntel Low Power Celeron Processors and Low Power Pentium III processors
nEBX-compliant board
n256KB/128KB of pipeline burst L2 cache (Pentium III/Celeron)
nUp to 256MB of SDRAM
nSocket for bootable DiskOnChip or DIP socket for BIOS extension support of Flash
or ROM
nPC Compatible uses Intel 443BX chip set
nOn board high resolution AGP 1X video controller
nFlat panel video support
nSupports resolutions up to 1280 x 1024
nSimultaneous CRT and LCD operation
nPC-104/Plus and PC/104 expansion buses
n10/100 Mbps Ethernet using Intel 82559
n4 RS-232 serial ports with FIFO, COM1 & COM2
supports optional RS-422/485/J1708 support
nBi-directional LPT port supports EPP/ECP
nDual IDE channels support UDMA-33 and UDMA-66 Drives
n48 bi-directional TTL digital I/O lines
1.2 General Description
TheEBC-BXisasmall,high-performance, embeddablecomputersystemonasingleboard.Itinte-
gratesa numberof popularI/OoptionsincludingAGP1XVGA,Ethernet,Solid-StateDisk,and High-
DensityParallelI/O. FourPCcompatibleserialportsarestandard,asarethefloppy,hard disk,and par-
allel printer interfaces. The EBC-BX is populated with either an Intel low power Celeron processor or
an Intel low power Pentium III processor at speeds from 300 to 700 MHz. Up to 256Mbytes of user
installable DIMM memory is supported. A 16-bit PC/104 expansion bus and the PC/104Plus bus is
provided for further expansion to an entire industry of add-on peripherals including sound and speech
modules, SCSI controllers, Analog I/O modules,andliterallyhundredsofotheroptionsavailable from
WinSystems and a variety of vendors supporting the PC/104 and PC/104-Plus standards. An onb oard
32-pin silicondisksocketsupportstheM-Systems’DiskOnChipFlashmodulesinsizesranging from8
Megabytes to over 500 Megabytes.
030923 OPERATIONS MANUAL EBC-BX Page 1- 1

1.3 Specifications
1.3.1 Electrical
Bus Interface : PC/104 8-Bit or 16-Bit expansion bus
PC/104-Plus 32-bit expansion bus
System Clock : FSB 100MHz
Interrupts : TTL Level input
VCC : +5V +/- 5% at 2.75A typical with an Intel 400Mhz Celeron processor with
32MB SDRAM
+5V +/-5% at 3.4A typical with an Intel Pentium III processor at 700 Mhz with
32MB SDRAM
VCC1 : +12V +/-5% (Not required. PC/104 Expansion, Flat Panel, use only)
VCC2 : -12V +/-5% (Not required. PC/104 Expansion or Flat Panel use only)
VCC3: 3.3V (Not required. PC/104 Plus expansion use only)
Memory
Addressing : 256 Megabyte addressing
BIOS ROM : 256K Atmel Flash (reprogrammable on board)
Memory DIMM Socket : 168-pin 3.3V Dimm Module; PC-100 SDRAM Module
SSD Memory : One 32-pin JEDEC standard socket supporting the M-Systems’ 32-Pin DOC
(DiskOnChip) module.
1.3.2 Mechanical
Dimensions : 5.75 X 8.0 X 0.60 inches (without PC/104 modules or cables)
PC-Board : FR4 Epoxy Glass with 6 signal layers and 4 power planes with screened
component legend, and plated through holes
Jumpers : 0.025" square posts on 0.10" centers
Connectors : Multi I/O : 50-pin RN type IDH-50LP
COM3/COM4 : 20-pin RN type IDH-20LP
Floppy Disk : 34-pin RN type IDH-34-LP
Page 1- 2OPERATIONS MANUAL EBC-BX 030923

CRT : 14-pin 2mm Molex Type 87331-1420
Flat Panel : Two, 50-pin 2mm Molex type 87331-5020
Power/Reset : 9-pin in-line Molex type 26-60-7091
Fan Power : 3-pin in-line Molex type 22-11-2032
Mouse : 5-pin in-line latching Molex type 22-11-2052
USB : 4-pin in-line latching Molex type 22-11-2042
PC/104 Bus : 64-Pin SAMTEC type ESQ-132-12-G-D
40-Pin SAMTEC type ESQ-120-12-G-D
PC/104-Plus Bus : 120-Pin SAMTEC type TS-30-Q
IDE : Two 40-pin 2mm Molex Type 70246-4021
Ethernet : RJ-45
1.3.3 Environmental :
Operating Temperature : -40°to +60°C
Non-condensing relative humidity : 5% to 95%
030923 OPERATIONS MANUAL EBC-BX Page 1- 3

2EBC-BX Technical Reference
2.1 Introduction
Thissectionofthemanualisintendedtoprovidesufficientinformationregardingtheconfiguration
and usage of the EBC-BX board. WinSystems maintains a Technical Support group to help ans wer
questions regarding configuration, usage, or programming of the board. For answers to questions not
adequately addressed in this manual, contact Technical Support at [phone] between 8AM and
5PM Central Time.
2.2 Intel FW82443BX / SMSC Victory-66 Chipset
The EBC-BX utilizes the Intel FW82443BX North bridge coupled with the SMSC Victory-66
Southbridge.Thiscombinedchipset providesahighly-integrated,high-performancebackbonefor full
Pentiumclass compatibility. TheChipsetcontainsthelogicforDRAMandbusstatecontrolas well as
the standard complement of 'AT' class peripherals, including :
Two-82C37 DMA controllers
Two-82C59 Interrupt controllers
82C54 Timer/Counter
Real Time Clock
Enhanced Power Management
Full Plug and Play compatibility
These functional units are 100% PC/AT compatible and are supported by the Award BIOS and
setup. Usersdesiringtoaccesstheseinternalperipheralsdirectlyshouldrefertoanymanufacturersge-
neric literature on the equivalent discrete component.
Thereare a numberofinternal registers within theBXchipset that areusedby theBIOSfor control
andconfiguration.RefertotheI/OmapinAppendixAforportusagetoavoidconflictswhenaddingex-
ternal I/O devices.
2.3 Memory Installation
TheEBC-BXsupportsasingleuserinstallable168-pinstandardDIMM.DIMMmodulesshouldbe
a minimum speed of PC-100 and x64 or x 72. Either ECC on non-ECC parts may be used. A single
DIMM socket is pro videdwhich can supportSDRAMsizes from32MBto256MB.Foralistofquali-
fied DIMMs, go to http://www.winsystems.com/memory
Installation is accomplished with power off by inserting the DIMM module directly into the con-
nector at M1. The DIMM module is keyed in 2 places and cannot be inserted backwards without ex-
030923 OPERATIONS MANUAL EBC-BX Page 2- 1

treme force. The module is inserted until the retaining clips snap into place. Removal is the reverse
process. Push down on the retaining clips, moving them outward. The DIMM module, once released,
will be forced up to an appropriate removal position.
2.4 Interrupt Routing
AllinterruptsontheEBC-BX areroutedtotheirrespectivePC/104buspins.Onboardnon-PnP pe-
ripherals, are routed to their typical usage interrupts using the jumper block at J19. This block allows
disconnecting or rerouting of the onboard interrupts. The layout for the J19 header and the default
jumper settings are shown below.
Page 2- 2OPERATIONS MANUAL EBC-BX 030923
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21 19 17 15 13 11 9 7 5 3 1
o o o o o o o o o o o
o o o o o o o o o o o
22 20 18 16 14 12 10 8 6 4 2 Interrupt routing header J19
1 o o 2
3 o o 4
5 o o 6
7 o o 8
9 o o 10
11 o o 12
13 o o 14
15 o o 16
17 o o 18
19 o o 20
21 o o 22
J19
IRQ3
IRQ4
IRQ5
IRQ7
IRQ6
IRQ14
IRQ15
IRQ12
IRQ11
IRQ10
IRQ9
N/C
N/C
COM3
N/C
N/C
Primary IDE
Secondary IDE
COM4
COM3
Parallel I/O
COM4

2.5 Power/Reset Connections
Power is applied to the EBC-BX via the connector at J3 (Molex part number 26-60-7091). The pin
definitions for J3 are given below. An optional push-button-reset (Normally Open) may also be routed
into J3 if desired. Momentary closure to ground forces a hardware reset.
Note : The 3.3 Volt input pin does not provide power to any devices on the board. It is routed di-
rectlytothePC/104PlusBusandisonlyrequirediftherearePC/104Pluscardsthat require3.3 Voltsbe
suppliedfromtheBus.The+12and-12VoltpinsarerouteddirectlytothePC/104connectorsand flat-
panel connectors and are not required for normal board operation.
2.6 Mouse Interface
A PS/2 mouse may be attached via the connector at J1. An adapter cable, CBL-225-1 is available
fromWinSystemstoadapttoaconventionalPS/2mouseconnector.ThepinoutforJ1isshownhere.
030923 OPERATIONS MANUAL EBC-BX Page 2- 3
WinSystems - "The Embedded Systems Authority"
o 1
o 2
o3
o 4
o 5
o6
o7
o8
o9
+5V
GND
GND
+12V
+3.3V
GND
+5V
-12V
PB Reset
J3
1 o
2 o
3 o
4 o
MSDAT
N/C
GND
+5V
MSCLK
J1

2.7 Real Time Clock/Calendar
The EBC-BX contains an onboard Clock/Calendar within the Victory-66 chip. This clock is fully
compatible with the MC146818A used in the original PC-AT computers. This clock has a number of
features including periodic and alarm interrupt capabilities. In addition to the time and date keeping
functions,thesystemconfigurationiskeptwithintheCMOSRAMcontainedintheclocksection.This
RAM holds all of the setup information regarding hard and floppy disk types, video type, shadowing,
wait states, etc. Refer to the section on the Award BIOS Setup for what is configured via the CMOS
RAM.
ItmaybecomenecessaryatsometimetomaketheCMOSRAMforgetitscurrentconfigurationand
tostartfreshwithfactorydefaults.Thismaybeaccomplishedbyremovingpowerfromtheboard . Then
remove the jumper from pins 2-3 on J27 and place on pins 1-2 for 10 seconds. Replace the jumper on
J27 pins 2-3, power-up, and reconfigure the CMOS settings as desired.
If is desired to operate the board without a battery J27 must be jumpered on pins 1-2.
2.8 Keyboard Interface
The EBC-BX contains an onboard PS/2 style keyboard controller. Keyboard connection is made
through the Multi-I/O connectoratJ2.AnadaptercableP/NCBL-247-1isavailablefromWinSystems
tomakeready access to all of the devices terminated at the Multi-I/O connector. Users des iring custom
connections should refer to the Multi-I/O connector pin definitions given later in this manual.
Page 2- 4OPERATIONS MANUAL EBC-BX 030923
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1 o
2 o
3 o
J27
J27 Battery Select Jumper

2.9 Serial Interface
The EBC-BX provides four 16550 compatible RS-232 serial ports at the following addresses :
COM1 3F8H at IRQ 4 (PnP Device)
COM2 2F8H at IRQ 3 (PnP Device)
COM3 3E8H* at IRQ 5**
COM4 2E8H* at IRQ 9**
*COM ports 3 and 4 can be enabled or disabled individually via the jumper block at J24. When J24 pins
1-2 are jumpered, COM3 is enabled. When J24 pins 3-4 are jumpered, COM4 is enabled.
**The interrupts are not disconnected when COM3 or COM4 are disabled. Use the interrupt routing block
J19 described earlier to disconnect the default interrupts if desired.
030923 OPERATIONS MANUAL EBC-BX Page 2- 5
WinSystems - "The Embedded Systems Authority"
U4 U5U9
1 o
2 o
3 o
3 2 1
o o o
J17 J15
U6 U7 U10
1 o
2 o
3 o
3 2 1
o o o
J18 J16

The two primary serial ports, COM1 and COM2 are configurable for RS-422, RS-485 or J1708,
with the additionofoptionaldriverICs(WinSystemsP/N CK-75176-2).Theconfigurationoptions for
each of the supported modes are shown on the following pages. Connection to COM1 and COM2 is
madethroughtheMulti-I/Oconnector at J2. An adapter cable (P/N CBL-247-1)isavailablefrom Win-
Systems to adapt to standard DB9 connectors.
COM1 - RS-232
COM2 - RS-232
Page 2- 6OPERATIONS MANUAL EBC-BX 030923
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3 2 1
o o o 1 2 3 o o o
U4 - Installed
U9 - Not Installed
U5 - Not Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J15 J17
COM1 DB9
CD
RX Data
TX Data
DTR
GND
DSR
RTS
CTS
RI
3 2 1
o o o 1 2 3 o o o
U6 - Installed
U10 - Not Installed
U7 - Not Installed
J19 J22
COM2 DB9
CD
RX Data
TX Data
DTR
GND
DSR
RTS
CTS
RI
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o

COM3/COM4 - RS-232
COM3 and COM4 are RS-232 only and are terminated at J4. An adapter cable is available from
WinSystems(P/NCBL-173-1),whichadaptsJ4totwostandardDB9Mconnectors.Thepindefinitions
for J4 are shown here :
2.9.1 RS-422 Mode Configuration
RS-422 levels are supported on both COM1 and COM2 with the installation of the optional “Chip
Kit”, WinSystems part number CK-75176-2. This kit provides the driver ICs necessary for a single
channel of RS-422. If two channels of RS-422 are required then two kits will be needed. RS-422 is a
4-wire point-to-pointfull-duplexinterfaceallowingmuchlongercablerunsthanareposs iblewithRS-
232. The differentialtransmitter and receiver twisted pairs offer a high degree of noise immunity.RS-
422 usually requires the lines be terminated at both ends. This termination can be accomp lished either
on the cable or by installingresisters on the board in locations reserved for them. The methodfordeter-
mining the correct resistor values is beyond the scope of this documentbut itis recommended that trial
values of 100 ohms be used in all three locations at the receiver end. The following illustration shows
thecorrectmodejumpering,driverICinstallation,I/Oconnectorpindefinitions,andterminationresis-
tor locations for each of the channels when used in RS-422 mode.
030923 OPERATIONS MANUAL EBC-BX Page 2- 7
WinSystems - "The Embedded Systems Authority"
1 o o 2
3 o o 4
5 o o 6
7 o o 8
9 o o 10
11 o o 12
13 o o 14
15 o o 16
17 o o 18
19 o o 20
COM3 DCD
COM3 RX
COM3 TX
COM3 DTR
GND
COM4 DCD
COM4 RX
COM4 TX
COM4 DTR
GND
COM3 DSR
COM3 RTS
COM3 CTS
COM3 RI
N/C
COM4 DSR
COM4 RTS
COM4 CTS
COM4 RI
N/C
J4

COM1 - RS-422
*ImportantNote:Allserialterminationcomponentsaresurfacemount0805packagesonthe
bottomsideoftheboard.Theseshouldonlybe installedbysurface mountqualifiedindividuals.
COM2 - RS-422
Page 2- 8OPERATIONS MANUAL EBC-BX 030923
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3 2 1
o o o 1 2 3 o o o
U4 - Not Installed
U9 - Installed
U5 - Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J15 J17
COM1 DB9
N/C
TX+
TX-
N/C
GND
RX+
RX-
N/C
N/C
RS-422 NOTE : When used in RS-422 mode,
the transmitter must be enabled by setting the RTS
bit in the Modem Control Register (Bit1).
VCC
RX+
RX-
R112
R114
R116
3 2 1
o o o 1 2 3 o o o
U6 - Not Installed
U10 - Installed
U7 - Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J16 J18
COM2 DB9
N/C
TX+
TX-
N/C
GND
VCC
R117
R115
R113
RX+
TX-
RS-422 NOTE: When used in RS-422 mode,
the transmitter must be enabled by setting the RTS
bit in the Modem Control Register (Bit).

2.9.2 RS-485 Mode Configuration
The RS-485 Multi-dropinterfaceissupportedonbothchannelswiththeinstallationoftheoptional
“Chip Kit”, WinSystems’ part number CK-75176-2. A single kit is sufficient to configure both chan-
nels for RS-485. RS-485 is a 2-wire multi-drop interface where only one station at a time talks (trans-
mits)whileallotherslisten(receive).RS-485usuallyrequiresthetwistedpairbetermin ated ateach end
of the run. The required termination values are dependent upon a number of factors including: line im-
pedance, line length, etc. A good trial value is 100 ohms in all three resistorlocations.Thefollowingil-
lustrations show the correct jumpering, driver IC installation, I/O connector pinout, and termination
resistor locations for each of the channels when used in RS-485 mode.
COM1 - RS-485
Important Note: All serial termination components are surface mount 0805 packages on the
bottom of the board. These should only be installed by surface mount qualified individuals.
030923 OPERATIONS MANUAL EBC-BX Page 2- 9
3 2 1
o o o 1 2 3 o o o
U4 - Not Installed
U9 - Installed
U5 - Not Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J15 J17
COM1 DB9
N/C
TX/RX+
TX/RX-
N/C
GND
N/C
N/C
N/C
N/C
VCC
TX/RX+
TX/RX-
R108
R106
R109
RS-485 NOTE : Because RS-485 uses a single
twisted-pair, all transmitters are connected in paral-
lel. Only one station at a time may transmit or have
its transmitter enabled. The transmitter Enable/Dis-
able is controlled in software using bit 1 in the Mo-
dem Control Register (RTS). When RTS is set, the
transmitterisenabled,andwhencleared(thenormal
state) the transmitter is disabled and the receiver is
enabled. Note that it is necessary to allow some
minimal settling time after enabling the transmitter
beforetransmittingthefirstcharacter.Likewise,fol-
lowing a transmission, it is necessary to be sure that
all characters have been completely shifted out of
the UART (Check Bit 6 in the Line Status Register)
before disabling the transmitter to avoid chopping
off the last character.

COM2 - RS-485
ImportantNote :Allserial termination components aresurface mount0805 packages.These
should only be installed by surface mount qualified individuals.
2.9.3 SAE J1708 Configuration
The Society of Automotive Engineers (SAE) J1708 interface is a variation of the RS-485 interface
whichisusedfor“SerialDataCommunicationsbetweenMicrocomputerSystemsinHeavyDutyVehi-
cle Applications”. It is beyond the scope of this document to go into detail on the J1708 specification.
The EBC-BX may be user configured for J1708 by the addition of the CK-75176-2 “Chip Kit”. One
“ChipKit”issufficienttoconfigurebothchannelsforJ1708.Theillustrationsthatfollow show the cor-
rectjumpering,driverICinstallation,I/Oconnectorpindefinitions,andtheterminationnetworkdetails
for each of the channels when used in J1708 mode.
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3 2 1
o o o 1 2 3 o o o
U6 - Not Installed
U10 - Installed
U7 - Not Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J16 J18
COM2 DB9
N/C
TX/RX+
TX/RX-
N/C
GND
N/C
N/C
N/C
N/C
VCC
TX/RX+
TX/RX-
R103
R104
R105
RS-485 NOTE : Because RS-485 uses a single
twisted-pair, all transmitters are connected in paral-
lel. Only one station at a time may transmit or have
its transmitter enabled. The transmitter Enable/Dis-
able is controlled in software using bit 1 in the Mo-
dem Control Register (RTS). When RTS is set, the
transmitterisenabled,andwhencleared(thenormal
state) the transmitter is disabled and the receiver is
enabled. Note that it is necessary to allow some
minimal settling time after enabling the transmitter
beforetransmittingthefirstcharacter.Likewise,fol-
lowing a transmission, it is necessary to be sure that
all characters have been completely shifted out of
the UART (Check Bit 6 in the Line Status Register)
before disabling the transmitter to avoid chopping
off the last character.

COM1 - J1708
Important Note : All serial termination components are surface mount 0805 packages on the
bottom of the board. These should only be installed by surface mount qualified individuals.
COM2 - J1708
030923 OPERATIONS MANUAL EBC-BX Page 2- 11
WinSystems - "The Embedded Systems Authority"
3 2 1
o o o 1 2 3 o o o
U4 - Not Installed
U9 - Installed
U5 - Not Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J15 J17
COM1 DB9
N/C
TX/RX+
TX/RX-
N/C
GND
N/C
N/C
N/C
N/C
VCC
R106
4.7K
R109
Absent
R108
4.7K
TX/RX+
TX/RX-
R111 47 OHM
R110 47 OHM
C104 .0022 ufd
C103 .0022 ufd
3 2 1
o o o 1 2 3 o o o
U6 - Not Installed
U10 - Installed
U7 - Not Installed
1 o o 6
2 o o 7
3 o o 8
4 o o 9
5 o
J16 J18
COM2 DB9
N/C
TX/RX+
TX/RX-
N/C
GND
N/C
N/C
N/C
N/C
VCC
R103
4.7K
R1105
Absent
R104
4.7K
TX/RX+
TX/RX-
R100 47 OHM
R101 47 OHM
C100 .0022 ufd
C101 .0022 ufd

2.10 Parallel Printer Port
The EBC-BX supports a fully bi-directional parallel printer port capable of EPP and ECP ope ra-
tions.ThePnPparallelportismappedbydefaultat378HandisterminatedattheMulti-I/Oconnectors
atJ3.OtherI/OandinterruptmappingareavailableusingtheAwardBIOSsetupmenuoptions.Thepin
definitions for the parallel port DB25 connector when using the CBL-247-1 cable are shown below:
2.11 Speaker/Sound Interface
TheEBC-BXutilizesahigh-impedancepiezotypedeviceforaudiooutput.BIOSbeepcodes,err or
signaling, or user-defined tones can be presented via this device.
2.12 PC/104 Bus Interface
The EBC-BX supports I/O expansion through the standard PC/104 connectors at J20 and J23. The
EBC-BX supports both 8-bit and 16-bit PC/104 modules. The PC/104 connector pin definitions are
provided on the following page for reference purposes.
Page 2- 12 OPERATIONS MANUAL EBC-BX 030923
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1 o o 14
2 o o 15
3 o o 16
4 o o 17
5 o o 18
6 o o 19
7 o o 20
8 o o 21
9 o o 22
10 o o 23
11 o o 24
12 o o 25
13 o
STROBE
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
ACK
BUSY
PE
SLCT
AUTOFD
ERROR
INIT
SLIN
GND
GND
GND
GND
GND
GND
GND
GND

2.13 PC/104Plus Bus Interface
The EBC-BX supports I/O expansion through the standard PC/104Plus connector at J22. The
PC/104Plus Bus pin definitions are provided on the following page for reference purposes.
030923 OPERATIONS MANUAL EBC-BX Page 2- 13
WinSystems - "The Embedded Systems Authority"
B1 o o A1
B2 o o A2
B3 o o A3
B4 o o A4
B5 o o A5
B6 o o A6
B7 o o A7
B8 o o A8
B9 o o A9
B10 o o A10
B11 o o A11
B12 o o A12
B13 o o A13
B14 o o A14
B15 o o A15
B16 o o A16
B17 o o A17
B18 o o A18
B19 o o A19
B20 o o A20
B21 o o A21
B22 o o A22
B23 o o A23
B24 o o A24
B25 o o A25
B26 o o A26
B27 o o A27
B28 o o A28
B29 o o A29
B30 o o A30
B31 o o A31
B32 o o A32
GND
RESET
+5V
IRQ9
-5V
DRQ2
-12V
0WS
+12V
GND
MEMW
MEMR
IOW
IOR
DACK3
DRQ3
DACK1
DRQ1
REFRESH
SYSCLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
DACK2
TC
BALE
+5V
OSC
GND
GND
IOCHK
BD7
BD6
BD5
BD4
BD3
BD2
BD1
BD0
IOCHRDY
AEN
SA19
SA18
SA17
SA16
SA15
SA14
SA13
SA12
SA11
SA10
SA9
SA8
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
GND
C0 o o D0
C1 o o D1
C2 o o D2
C3 o o D3
C4 o o D4
C5 o o D5
C6 o o D6
C7 o o D7
C8 o o D8
C9 o o D9
C10 o o D10
C11 o o D11
C12 o o D12
C13 o o D13
C14 o o D14
C15 o o D15
C16 o o D16
C17 o o D17
C18 o o D18
C19 o o D19
GND
SBHE
LA23
LA22
LA21
LA20
LA19
LA18
LA17
MEMR
MEMW
SD8
SD9
SD10
SD11
SD12
SD13
SD14
SD15
KEY
GND
MEMCS16
IOCS16
IRQ10
IRQ11
IRQ12
IRQ15
IRQ14
DACK0
DRQ0
DACK5
DRQ5
DACK6
DRQ6
DACK7
DRQ7
VCC
MASTER
GND
GND
J23 J20