Eaton Cutler-Hammer SRAM PC104 User manual

I.L. 01-50419-00
Effective 05/98
CONTENTS
The SRAM PC104 Battery Backed Memory Card kit
includes the following:
•Memory card
•ISA CPU adapter card
•Software diskette
•Manufacturer’s manual
•Video extension cable
•Stake pin protector
•Additional hardware (plastic bag)
•ESD strap
•This instructional leaflet
DESCRIPTION
The SRAM PC104 Battery Backed Memory Card is a
device that can emulate a floppy disk drive or expand
RAM capacity. Two versions are available. One
version requires an ISA adapter in order to fit into a
standard PC ISA slot. The coupling of the adapter card
and memory card will occupy the space of two ISA
slots, even though only one ISA slot is used. The
second version can be connected to the CPU card
using an ISA CPU adapter card. You can install up to
two SRAM PC104 Battery Backed Memory Cards in
one PC.
NOTE: The PC104 board can only be used as a hard
drive emulator with DOS. All other operating systems
support the PC104 board as retentive memory only.
Figure 1 – SRAM PC104 Battery Backed Memory Card
HARDWARE CONFIGURATION
The SRAM PC104 Battery Backed Memory Card
comes with a ROM BIOS chip and three memory chips
installed. These chips allow the memory card to
function as a 5 ¼ - 360K floppy drive.
Since NetSolver uses the SRAM PC104 Battery
Backed Memory Card as a raw memory source, the
ROM BIOS chip must be removed.
SRAM PC104 Battery Backed Memory Card
Bank 1Bank 0

Page 2 I.L. 01-50419-00
Cutler-Hammer
173 Heatherdown Drive
P.O. Box 6166
Westerville, OH 43081
TEL: [phone]
FAX: [phone]
www.cutlerhammer.eaton.com
Effective 05/98
Printed in U.S.A.
The following information describes how to configure
the memory card for use within a NetSolver
application.
Memory Type
Even though the SRAM PC 104 Battery Backed
Memory Card supports SRAM, EPROM and FLASH
memory chips, the retentive memory driver only uses
SRAM.
Each memory card has six 32-pin sockets to house the
memory chips. The sockets are divided into two banks
(three sockets each). Bank 0 is controlled by SW1 and
Bank 1 is controlled by SW3. Bank 0 is supplied with
384K memory.
Settings for SW1:
Closed/Open/Closed/Closed – Battery on, SRAM 128k
Settings for SW3:
Open/Closed/Closed/Closed – Battery off, bank
disabled
Memory Address
There are only three possible regions of memory. If all
three regions conflict with other hardware, the memory
card cannot be used, and as a result, the retentive
memory driver cannot be used. The NetSolver
standard address is 0xD0000 – 0xD3FFF. This
address is also the default setting for the SRAM
PC104 Battery Backed Memory Card. Setting the
memory address id is done using SW2 positions 1 and
2.
Settings for SW2 (positions 1 & 2):
Closed/Open D0000-D3FFF
I/O Address
I/O address selection is done using SW2 positions 3
and 4. Four possible I/O addresses are available. If all
four addresses conflict with other I/O in the computer,
the retentive memory driver may not be used. The
NetSolver standard address is 2DC – 2DD.
Note that the SW2 positions 5 and 6 are unused by the
retentive memory driver.
Settings for SW2 (positions 3 & 4):
Open/Open 2DC-2DD
Board Level Jumpers
There are eight JP jumpers to configure. The first three
jumpers (JP1, JP2 and JP3) have three posts and the
remainder have two posts.
•JP1 and JP2 are used for FLASH memory and
must be turned off (jumper posts 2 & 3).

Page 3 I.L. 01-50413-00
Cutler-Hammer
173 Heatherdown Drive
P.O. Box 6166
Westerville OH 43081
(614)-882-3282
FAX: [phone]
www.cutlerhammer.com
Effective 02/98
Printed in U.S.A.
•JP3 is used for battery selection. To use the
internal battery (recommended), jumper posts 1 &
2. The on-board LED will signal when battery
voltage is below 2.6 V. If the internal battery runs
down, an external battery must be installed. To use
an external battery, jumper posts 2 & 3.JP6 is the
Master/Slave selection and must be shorted. The
card default is Master. If two memory cards are
installed, set jumper JP6 to the Slave position on
the second card.
•JP4 and JP5 are not used by NetSolver and
should be left at the factory defaults.
•JP7 is for write protection of both memory banks.
The default setting is Protect disabled.
•JP8 provides a connection for an external battery.
SOFTWARE CONFIGURATION
To configure the software for the SRAM PC104 Battery
Backed Memory Card, please see the application note
for the retentive memory driver.
INSTALLATION
If you have a Cutler Hammer model D72XPY, D73XPY
or D74XPY, where Y is 2, 3, 4, 5, 6, or 7, you have a
CPU card that allows the SRAM PC104 Battery
Backed Memory Card to be connected to it without
using an ISA CPU adapter card. The CPU card can be
found in slot 1 of your computer. The instructions
below outline how to install the SRAM PC104 Battery
Backed Memory Card directly to a CPU card.
1. Ground yourself to avoid static discharge. Use an
ESD strap to avoid permanent damage to
integrated circuits.
2. Remove the CPU card from your unit.
3. Attach the video extension cable to the CPU card.
4. Install stake pins on the memory side of the SRAM
PC104 Battery Backed Memory Card.
5. With the memory side of the SRAM PC104 Battery
Backed Memory Card facing the CPU card, mount
the memory card to the CPU card.
6. Fasten screws to the standoffs (using Loctite small
screw thread locker #222) to secure both cards
together.
7. Attach stake pin protector over the stake pins.
8. Reinstall the CPU card.
SUPPORT SERVICES
Technical Support 1-800-809-2772
If you are in the U.S. or Canada, you can take
advantage of our toll-free line for technical assistance
with hardware and software product selection, system
design and installation, and system debugging and
diagnostics. Technical support engineers are available
for calls during regular business hours (8 am - 5:30 pm
EST) by calling 1-800-809-2772. International calls can
be made to either the Tech Line at 1-800-809-2772
(toll call) or the Cutler-Hammer main business line at
614-882-3282.
Technical Support Fax [phone]
You can also contact our technical support engineers
by faxing your support requests directly to APSC
Westerville at 614-882-0417.
Information Fax-Back Service 614-899-5323
The latest Cutler-Hammer product information,
specifications, technical notes and company news is
available to you via fax through our direct document
request service at 614-899-5323. Using a touch-tone
phone, you can select any of the info faxes from our
automated product literature and technical document
library, punch in a fax number and receive the
information immediately.
Bulletin Board Service 614-899-5209
Parameters: 8 data bits, 1 stop bit, parity none, 9600-
28.8K baud
If you have modem access, you can dial in directly to
our electronic bulletin board service for the latest
product and company information. File sharing,
product software downloads and our user message
service are just a few of the things you will find online
at 614-899-5209.
Website
http://www.cutlerhammer.eaton.com/automation
E-mail chatechsuppor[email protected]
If you have Internet capabilities, you also have access
to technical information via our website at
http://www.cutlerhammer.eaton.com/automation. The
website includes technical notes, frequently asked
questions, release notes, and other technical

Page 4 I.L. 01-50419-00
Cutler-Hammer
173 Heatherdown Drive
P.O. Box 6166
Westerville, OH 43081
TEL: [phone]
FAX: [phone]
www.cutlerhammer.eaton.com
Effective 05/98
Printed in U.S.A.
documentation. Technical support messages and files
can be sent to chatec[email protected]om