PLX Technology PCI 9050RDK User manual

Features
■
PCI Version 2.1 compliant
board based on the
powerful PLX 9050 Bus
Target Interface Chip.
■
PCI 9050RDK available for
both Generic and ISA Bus
Adapters.
■
PLXMon95 provides a
comprehensive tool for PCI
bus monitoring and debug.
■
Sample Windows95
device drivers.
■
Comprehensive program-
mers reference manuals for
both PLXMon and PCI
9050RDK Development Kit.
■
Extensive technical support
available from PLX to ensure
simple and painless integra-
tion design.
■
Large prototype area and
test header plus daughter
card connectors for circuitry
under development.
■
A piggyback ISA slot that
enables existing ISA boards
to interface with the PCI
9050 for software and hard-
ware purposes.
PCI 9050RDK
Reference Design Kit
Overview
As PCI gains momentum as the preeminent backplane standard,
suppliers of add-in cards of all types are rushing to get PCI ver-
sions to market. Until now, design accelerators like software
development kits have been geared to high performance PCI
bus master adapters. For designers looking for a simple and
painless way to convert their ISA adpaters, PLX offers its PCI 9050
RDK. The RDK plays development host to literally thousands of 8-and 16-bit
ISA cards providing a complete development environment.
At the heart of the kit is the PCI 9050 Bus Target interface chip! This 160
pin chip has a PCI bus on one side and a flexible local bus on the other. It
includes a PCI board designed with the PCI 9050 chip, I/O daughter card con-
nector for standard or custom functions, a breadboard area, test headers, and a
piggyback ISA slot that enables existing ISA boards to be plugged into the PCI
9050 for software and hardware implementation. The PCI 9050RDK also includes
a set of development software tools, including PLXMon™ for PCI bus monitor-
ing and debug, and example serial/modem device drivers for Windows 95.
Benefits
With OEM PC suppliers and system integrators demanding PCI instead of ISA,
the RDK offers customers an excellent design tool kit for converting existing ISA
adapter designs toPCI. Designers now have a tool to overcome compatibility,
plug-and-play, and the performance downsides of legacy ISA adapters!

PCI 9050RDK Contents
Copyright © 1997 by PLX Technology, Inc. All rights reserved.
PLX and PLXMon are trademarks of PLX Technology, Inc. which may be registered in some jurisdictions.
All other product names that appear in this material are for identification purposes only and are acknowledged to be trademarks or registered
trademarks of their respective companies.
Information supplied by PLX is believed to be accurate and reliable, but PLX Technology, Inc. assumes no responsibility for any errors that may appear
in this material. PLX Technology reserves the right, without notice, to make changes in product design or specification.
EESK
EEDO
EEDI
EECS
LAD[31:0]
LA[27:2]
LBE[3:0]#
LINTi1
LINTi2
LCLK
LHOLD
LHOLDA
LRESET#
BCLKO
CS[1:0]#
USER0/WAITO#
USER1/LLOCK#
USER2/CS2#
USER3/CS3#
ADS#
BLAST#
LW/R#
RD#
WR#
LRDYi#
BTERM#
ALE
MODE
AD[31:0]
CLK
RST#
INTA#
LOCK#
PCI Bus Interface
PCI 9050
C/BE[3:0]#
PAR
FRAME#
IRDY#
TRDY#
STOP#
IDSEL
DEVSEL#
PERR#
SERR#
Serial
EEPROM
PCI Bus
Local Bus
I/O Controller
Memory
PCI Connector
Legacy 8 or 16 bit
ISAAdapter
ISA Connectors
Test Headers
Prototyping
Area
Local Bus
Static
RAM
Daughter Card Connector
ISA
Conversion
Logic
Local Interface
64 Byte
RD & WR
FIFOs
PCI 9050
Interface
Chip PCI Interface
Host PCI Bus
9050RDK Features Included
PCI board with PCI 9050 Interface Chip ✔
PLXMon95 PCI Debug Software ✔
Serial/Modem Development Drivers for Windows95 ✔
Off-the-shelf ISA Serial I/O card ✔
PLXMon Reference Manual ✔
PCI 9050RDK Development Kit Manual ✔
Product Ordering Information
PCI 9050 PCI Bus Target Interface Chip
PCI 9050RDK PCI 9050 Software Development Kit
PLX Technology, Inc.
390 Potrero Ave.
Sunnyvale, CA.94086 USA
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web and FTP Site:
www.plxtech.com
PCI 9050 Block Diagram
PCI 9050RDK Block Diagram

PCI 9050RDK
Development Kit Manual
Version 1.2
January 28, 1998
Product Sales: 1-800-759-3735
Fax: [phone]
Email: [email protected]
Web and FTP Site: //www.plxtech.com
TECHNOLOGY ®

PCI 9050RDK Development Kit Manual i
Table of Contents
Preface....................................................................................................................vii
Document Organization................................................................................. vii
Style Conventions .........................................................................................viii
Contacting PLX .............................................................................................viii
Chapter 1...................................................................................................................1
PCI 9050RDK User’s Guide .....................................................................................1
Who Should Use the 9050RDK?.....................................................................3
Late Breaking News ........................................................................................3
Hardware Installation.......................................................................................4
PLX 9050RDK Windows 95 Bus Driver...........................................................7
PCI Exploration Programs.............................................................................15
Configuration Issues......................................................................................19
Windows 95 Tips...........................................................................................22
Troubleshooting ............................................................................................23
Chapter 2.................................................................................................................25
PCI 9050RDK Hardware Manual............................................................................25
PCI Interface .................................................................................................26
PCI 9050 Target Interface Chip.....................................................................26

Table of Contents
ii PCI 9050RDK Development Kit Manual
SRAM Subsystem..........................................................................................30
ISA Subsystem ..............................................................................................32
Daughter-Card Connector .............................................................................39
Test Headers and Prototype Area.................................................................40
Additional Development Resources Provided by PLX...................................42
Chapter 3.................................................................................................................43
PCI 9050RDK Schematics......................................................................................43

Table of Contents
PCI 9050RDK Development Kit Manual iii

PCI 9050RDK Development Kit Manual iv
Preface
This manual provides all the information you need to use the PCI 9050RDK Development Kit.
Document Organization
This manual is organized into the following chapters for easy reference:
•Chapter 1, “PCI 9050RDK User’s Guide,” discusses how to use the PCI 9050RDK.
In particular, it provides installation information and instructions for piggybacking
ISA comm cards and other ISA cards.
•Chapter 2, “PCI 9050RDK Hardware Manual,” describes each subsystem found on the
RDK and provides suggestions for using the tools and circuitry included as a starting
point for a new design.
•Chapter 3, “PCI 9050RDK Schematics,” provides schematics of the PCI 9050RDK
for easy reference.
The PLXMon software used with this product is documented separately, in the PLXMon
User’s Guide.

Preface
PCI 9050RDK Development Kit Manual v
Style Conventions
The following styles are used in this manual:
•Commands, file names, keyboard keys, text you manually enter, and URL paths are
in Courier type (for example, DEBUG.EXE or http://www.plxtech.com).
•Variables and parameters are in Courier italic type (for example, hbuf or x).
•Emphasized text, names of diskettes, and names of publications are in italic type
(for example, PLX 9050RDK Distribution Disk).
•Screen references are in Arial Bold type (for example, “Choose OK”).
Contacting PLX
We want to hear from you! If you have comments, corrections or suggestions please let
us know.
PLX Technology, Inc.
390 Potrero Ave
Sunnyvale, CA 94086
Phone [phone]
FAX [phone]
Email [email protected]
Website http://www.plxtech.com

PCI 9050RDK Development Kit Manual 1
Chapter 1
PCI 9050RDK User’s Guide
Welcome to the PLX 9050RDK (Resource Development Kit). This chapter is the primary
companion to the kit—it will help you get the most out of your kit in the shortest amount
of time. Use the information in this chapter to
•Install the 9050RDK card hardware in your computer
•Piggyback an ISA comm card to the 9050RDK card (the kit includes either a modem
card or a serial card) and install the PLX 9050RDK Windows 95 bus driver.
•Piggyback any ISA card on the 9050RDK
•Use PLX PCI software to explore and configure the PCI 9050 and piggybacked
ISA cards
•Troubleshoot problems you may have with the PCI 9050RDK
The 9050RDK offers PCI computer engineers hardware and software to learn about the
PLX PCI 9050 interface chip, to build PCI-based projects, and test functional feasibility
of migrating an existing ISA product to PCI—all quickly and easily.
The key features of the 9050RDK card include the PLX PCI 9050 interface chip and the
ISA 8/16 connector. You can plug most ISA cards into the 9050RDK ISA connector; and,
with the 9050RDK-exploration software, configure the PCI 9050 and test the functionality
of the ISA card. Once hardware functionality is satisfactory, you can concentrate on updating
your driver software.

Who Should Use the 9050RDK? PCI 9050RDK User’s Guide
2PCI 9050RDK Development Kit Manual
Figure 1-1.Major Functions of PCI 9050RDK
Most piggybacked ISA cards are fully functional without hardware changes. However,
if your ISA board has special interface requirements, you can add custom hardware to the
prototyping area of the 9050RDK. In particular, the 9050RDK is not designed to support
the following:
•ISA boards that require refresh cycles
•ISA bus masters or DMA adapters (the PCI 9050 does not have PCI bus master
capabilities)
The kit includes a standard ISA comm card (either a modem card or a serial card) and a PLX
RDK bus driver. These components demonstrate a successful migration from ISA to PCI.
Aside from ISA to PCI migration, you can use the 9050RDK to learn more about the
PCI 9050 interface chip or build a PCI-based prototype. The 9050RDK card provides a
large daughter-card connector, along with a generous prototyping area and on-board RAM.
On-board headers provide wiring access to all local-side pins of the PCI 9050 chip.
For all your uses of the 9050RDK, you will find the PCI exploration software included with
the kit to be especially useful. This software enables you to read and write all physical memory
and I/O in your system. It also provides easy access to all PCI registers on all PCI devices, as
well as local registers on the PLX family PCI devices, including the PCI 9050. The software
comes in DOS and Windows 95 versions.

PCI 9050RDK User’s Guide Who Should Use the 9050RDK?
PCI 9050RDK Development Kit Manual 3
Who Should Use the 9050RDK?
The 9050RDK is a PCI engineering toolkit. It is targeted for computer engineers investigating
the PCI 9050 interface chip as part of a commercial product. You are a good candidate if you
are interested in converting an existing ISA product to PCI or in designing a new high
performance PCI (slave-only) product.
To use this product, you or your team should be able to
•Use hardware tools (such as logic analyzers and oscilloscopes)
•Design and build interface logic, if necessary
•Write or modify driver code
•Use command-line style programs (such as the DOS program, DEBUG.EXE)
Late Breaking News
Be sure to read any addenda and errata to the 9050RDK. These documents discuss
important changes, corrections, and improvements to the kit. The PLX website
(http://www.plxtech.com) may contain important late breaking news as well.

Hardware Installation PCI 9050RDK User’s Guide
4PCI 9050RDK Development Kit Manual
Hardware Installation
This section will help you set up the 9050RDK.
Standard Installation
Standard installation is the best starting point for all uses of the 9050RDK. This section
describes how to install the 9050RDK card along with the communications card that is
furnished in the kit.
Once you have followed the standard installation procedure, it is recommended that you go to
the PCI Exploration Programs (PLXMon or PLXMon95), on page 15. Follow this procedure
to install and use the PLX PCI Exploration Software.
Your 9050RDK card should not require any special jumper settings for general access to the
PCI 9050. However, if you have problems, refer to Chapter 2, “PCI 9050RDK Hardware
Manual,” for jumper settings.

PCI 9050RDK User’s Guide Hardware Installation
PCI 9050RDK Development Kit Manual 5
♦♦ Install the 9050RDK card with the ISA Communications card in your
system:
1. Carefully piggyback the ISA comm card onto the ISA connector of the
9050RDK card. Note the following:
•The component side of ISA cards is opposite from PCI cards
•You will not be able to replace the cover of your computer while an ISA card is
piggybacked on the 9050RDK card
•If your computer case interferes with external cabling to the ISA card, you
may want to remove the motherboard from the case
2. Connect appropriate external cabling (by way of phone line or serial cable) to a remote
computer.
3. Use safe and reasonable procedures to open your computer and install the
9050RDK card with the ISA communications card in an available PCI slot.
4. Power on your computer and boot either DOS or Windows 95.
5. Systems running Windows 95—If this is the first time a PCI 9050 is being installed
on your system, your system’s PCI bus enumerator will discover that a new PCI card
has been installed. You will be prompted to install a driver for the new card—choose
driver from disk provided by hardware manufacturer.
6. Next, you will be asked to install from disk. Choose copy manufacturers files from
A:______. This will install all the files from the disk. (Do not specify, just a single file.
The Windows O.S. will find a communication port and install the software for the
communications port).
You should now be able to
•Use the PLX PCI programs to explore the PCI 9050 and the 9050RDK memory
(refer to the section, “PCI Exploration Programs,” on page 15 and the PLXMon
User’s Guide)
•Build a PCI-based prototype circuit
•Test the ISA comm card on the 9050RDK
•Piggyback any other ISA card on the 9050RDK (refer to the section, “Piggybacking
Any ISA Card,” on page 7)

Hardware Installation PCI 9050RDK User’s Guide
6PCI 9050RDK Development Kit Manual
Once the ISA comm card is piggybacked to the 9050RDK card, you can install software to
test your setup. Table 1-1lists the installation choices.
Table 1-1. Installation Choices
Install Comments
PLXMon PCI exploration software (DOS or Windows 95 versions).
Refer to the section “PCI Exploration Programs,” on page 15 and the
PLXMon User’s Guide
PLX RDK
Bus Driver This Windows 95 driver allows you to use popular applications with the piggybacked comm card as if the card were plugged into a standard ISA slot.
Refer to the section “PLX 9050RDK Windows 95 Bus Driver,” on page 7.

PCI 9050RDK User’s Guide PLX 9050RDK Windows 95 Bus Driver
PCI 9050RDK Development Kit Manual 7
Piggybacking Any ISA Card
The 9050RDK is designed to provide full functionality for most ISA cards. However, if extra
interface hardware is required, you can add it in the 9050RDK prototyping area. In particular,
the 9050RDK is not designed to support
•ISA boards that require refresh cycles
•ISA bus masters or DMA adapters (the PCI 9050 does not have PCI bus master
capabilities)
♦♦ To piggyback any ISA card:
1. Follow the steps outlined in the section, “Standard Installation,” on page 4.
2. Power off your computer.
3. Carefully piggyback your ISA card onto the ISA connector of the 9050RDK card.
Note the following:
•The component side of ISA cards is opposite from PCI cards
•You will not be able to replace the cover of your computer while an ISA card is
piggybacked on the 9050RDK card
•If your computer case interferes with external cabling to the ISA card, you
may want to remove the motherboard from the case
4. Power on your computer and boot DOS or Windows 95.
Once your ISA card is piggybacked to the 9050RDK card, you can install PCI exploration
software for DOS or Windows 95. Refer to the section, “PCI Exploration Programs,” on
page 15 and the PLXMon User’s Guide.
PLX 9050RDK Windows 95 Bus Driver
This section discusses information related to the Windows 95 bus driver for the
PLX 9050RDK.
Driver Overview
The PLX RDK bus driver is a Windows 95 VxD (virtual device driver) that logically connects
a piggybacked comm card to the rest of the system. Programmers call this type of driver a
“bus enumerator”—it programs the PCI 9050, and enumerates the one-and-only device on the
9050 local bus. Using the enumerator technique allows standard device drivers to be used
with the comm card. (An alternative is to modify the device driver to directly program the PCI
9050.)

PLX 9050RDK Windows 95 Bus Driver PCI 9050RDK User’s Guide
8PCI 9050RDK Development Kit Manual
Only two files are needed for the complete driver package—PLXRDK.VXD and PLXRDK.INF.
The first file is the actual PLX RDK bus driver, and the second guides the Windows 95
installer program.
You do not have to set the port address of the comm card as long as it is one of the four
standard COM addresses. The comm card can be set to use any interrupt—all interrupts are
OR’d on the RDK ISA connector into one line of the PCI 9050.
Note: Windows 95 handles copying of the PLXRDK.INF file differently, depending on which
version of Windows 95 you are running (refer to the note under Step 3 in “Install the
9050RDK card with the ISA Communications card in your system” on page 5to determine
which version is running on your system):
•Windows 95—Renames the installer file, PLXRDK.INF, when it copies the file from
the PLX 9050 Distribution Disk to the \WINDOWS\INF folder. The file is renamed as
OEMn.INF, where nis the nth OEM driver installation.
•Windows 95 OSR 2—Copies the installer file, PLXRDK.INF, from the PLX 9050
Distribution Disk to the \WINDOWS\INF\OTHER folder.
Note: PLX has seen instances where the enclosed PLX PCI 9050 Windows95 driver
(PLXSDK.VXD) does not operate with Windows95 OSR2. The following is suggested.
1. Windows95 OSR2 is not supported. Customers are advised to use a third-party
software solution from KRFTech. You have received their software and manuals in the
kit. The KRFTech solution is a device driver development tool kit. The same driver
will work on both Windows95 and WindowsNT. KRFTech can be contacted at
http://www.krftech.com.
2. The source code for the Windows 95 driver (PLXSDK.VXD) is enclosed in the PLX
PCI 9050RDK package and may be modified to support Windows95 OSR2.
♦♦ PLX RDK bus driver tasks (simplified):
1. Negotiate with the Windows Configuration Manager for an eight-byte range of
standard ISA COM addresses (maps above the ISA space if all standard addresses
are taken)
2. Program the PCI 9050 for local I/O access, mapping the range of local I/O to the
standard COM address
3. Probe standard COM ranges of the PCI 9050 local I/O space for an 8250 Universal
Asynchronous Receiver Transmitter (UART)
Contact PLX if you need a copy of the PLX RDK bus driver source code for use or reference.

PCI 9050RDK User’s Guide PLX 9050RDK Windows 95 Bus Driver
PCI 9050RDK Development Kit Manual 9
Install, Check, Change or Remove the Driver
This section describes how to install, check, change, or remove the Windows 95 driver for the
ISA comm card of the 9050RDK. Refer to Table 1-2below to perform the desired task.
Table 1-2.What to Do when You Want to Install, Check, Change or Remove the Driver
Task Comments
Install If you boot Windows 95 with the 9050RDK card installed, and a dialog box appears
stating the system found new hardware, install the driver using the method
described in the section, “Installing when Windows 95 Finds New PCI Hardware,”
on page 10.
If Windows 95 boots normally with the 9050RDK card installed, and you have never
installed the 9050RDK bus driver, chances are you were prompted about the new
PCI card hardware in a previous session, and you chose not to install the driver.
In this case, use the method described in the section, “Installing after Previously
Choosing Not to Install a Driver,” on page11 to install the driver.
Check If you are not sure the driver was properly installed, you can verify the installation
as described in the section, “Verifying the Driver Installation,” on page 11.
Change If necessary, you can change the driver or examine the driver properties (file name,
provider and version) and the resource allocations (port, memory and interrupt)
of the device as described in the section, “Driver Properties, Device Resources,
and Changing the Driver,” on page 12.
Remove or
Reinstall You can remove or reinstall the driver, as described in the section, “Removing or Reinstalling the Driver,” on page 13.
Installation
problems? If you are still having problems installing the driver, try the steps outlined in the section, “If You Have Problems Installing the Driver,” on page 14.

PLX 9050RDK Windows 95 Bus Driver PCI 9050RDK User’s Guide
10 PCI 9050RDK Development Kit Manual
Installing when Windows 95 Finds New PCI Hardware
If, during the boot process, Windows 95 displays a box saying it found a PCI card, followed
by a “New Hardware Found” dialog box (“Update Device Driver Wizard” dialog box in
Windows 95 OSR 2), it indicates that the Windows 95 internal configuration database does
not know of a driver to associate with the Vendor ID and Device ID of the PCI 9050. A
dialog box pops up, prompting you to install a driver for Windows 95 to associate with the
card.
♦♦ To install the PLX RDK bus driver—Windows 95:
1. Insert the PLX 9050RDK Distribution Disk into the floppy drive of your computer.
2. Choose Driver from disk provided by hardware manufacturer.
3. Choose OK.
4. Choose OK in the Install From Disk dialog box (or browse, as necessary, to find
PLXRDK.INF).
♦♦ To install the PLX RDK bus driver—Windows 95 OSR 2:
1. Insert the PLX 9050RDK Distribution Disk into the floppy drive of your computer.
2. Choose Next to search for the PLXRDK.INF driver. Windows 95 displays a
confirmation window when it finds what it believes to be the correct driver.
3. Choose Finish to use this driver.
4. Choose Other Locations if this is not the correct driver, to open a browse window
to search for it manually.
Your system should show that it is adding a communications port to the system, then continue
to boot normally.
You can now use any application for the piggybacked ISA comm card that you would use
when the card is plugged into an ISA slot.
Some notes about driver installation:
•If you are prompted to restart your computer after installing the driver, the PLX RDK
bus driver failed to find a comm card piggybacked to the 9050RDK.
•If you are prompted with a Select Device dialog box after installing the driver,
the Vendor ID or Device ID of the 9050RDK do not match the IDs found in
PLXRDK.INF.
•If you removed the 9050RDK bus driver using only the Device Manager, Windows 95
can still reload the driver automatically—you will not be prompted.

PCI 9050RDK User’s Guide PLX 9050RDK Windows 95 Bus Driver
PCI 9050RDK Development Kit Manual 11
•If a PLX 9050RDK driver is installed, and you no longer want to use it, follow the
instructions in the section “Removing or Reinstalling the Driver,” on page 13 to
“permanently” disassociate all PLX drivers from the 9050RDK card.
•You can use the Device Manager, as described in the section, “Verifying the Driver
Installation,” on page 11 to verify the driver installation.
Installing after Previously Choosing Not to Install a Driver
If your 9050RDK card is installed, your computer boots Windows 95 normally, and you have
either removed or never installed the 9050RDK bus driver, then chances are you chose not to
install the driver when prompted in an earlier session.
This section describes how to remove the Windows 95 dummy driver and install the
9050RDK bus driver in its place.
♦♦ To remove the Windows 95 dummy driver:
1. Open Start | Settings | Control Panel | System | Device Manager.
2. Double click Other Devices.
3. Select PCI Card.
4. Choose Remove.
5. Choose OK from the Confirm Device Removal dialog box.
6. Choose Close.
Now, use normal procedures to reboot the system and follow the instructions in the section
“Installing when Windows 95 Finds New PCI Hardware,” on page 10.
Verifying the Driver Installation
After installing the driver, you can verify whether it was installed properly.
♦♦ To verify the driver installation:
1. Open Start | Settings | Control Panel | System | Device Manager.
2. Double click System devices.
If you see PLX 9050RDK Bus in the list, then the correct driver is installed.
For more details on the driver, refer to the section, “Driver Properties, Device Resources, and
Changing the Driver,” on page 12.