Eaton Cutler Hammer SRAM PC104 User manual

I.L. 01-50544-00
CONTENTS
The SRAM PC104 Battery Backed Memory Card
(BBMC) 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
•SRAM Memory Chip
DESCRIPTION
The SRAM PC104 BBMC 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. Two SRAM PC104 BBMC can be installed.
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 BBMC
HARDWARE CONFIGURATION
The SRAM PC104 BBMC comes with a ROM BIOS
chip and one memory chip.
NetSolver uses the SRAM PC104 BBMC as a raw
memory source, commonly referred to as retentive
memory. To accomplish this Install the supplied SRAM
Memory chip in Socket 1 of Bank 1.
The following information describes how to configure
the memory card for use with a NetSolver application.
Memory Type
Even though the SRAM PC 104 BBMC supports
SRAM, EPROM and FLASH memory, the retentive
memory driver only uses SRAM.
There are six 32-pin sockets to house the memory
chips. The sockets are divided into two banks (three
sockets each). Bank 1 is controlled by J6 and Bank 2
is controlled by both J5 and J7.
Settings for J6:
Open/Closed/Closed – All sockets of Bank 1 enabled
Settings for J5 and J7:
J5: Open/Closed/Closed – Socket 3 of Bank 2 enabled
J7: Open/Closed/Closed – Socket 1&2 of Bank 2
enabled
Memory Address
There are seven possible memory addresses. If all
seven addresses conflict with other hardware, the
memory card cannot be used. The NetSolver standard
address is 0xD800. Setting the memory address is
done using J1, J2 and J3.
J1: Open – J2: Closed – J3: Open
Onboard Battery Control
J8: Open/Closed/Closed/Open – enables the on board
battery to backup the SRAM memory.
Memory Device Selection
J4: Open/Closed/Closed – enables SRAM devices.
BOARD JUMPER DEFINITIONS
There are eight jumpers used to configure the card.
•J1, J2 & J3 select the memory address.
Disable – J1 = Closed, J2 = Closed, J3 = Closed
C800 – J1 = Open, J2 = Closed, J3 = Closed
CC00 – J1 = Closed, J2 = Open, J3 = Closed
D000 – J1 = Open, J2 = Open, J3 = Closed
D400 – J1 = Closed, J2 = Closed, J3 = Open
D800 – J1 = Open, J2 = Closed, J3 = Open
DC00 – J1 = Closed, J2 = Open, J3 = Open
E000 – J1 = Open, J2 = Open, J3 = Open
•J4 is used for battery selection. To use the internal
battery (recommended), jumper posts 2 & 3.
•J5 is used to enable/disable socket 3 of Bank 2.
Enable – Open/Closed/Closed
Disable – Closed/Closed/Open
SRAM PC104 Battery Backed Memory Card
Bank 2Bank 1

I.L. 01-50544-00
Cutler-Hammer
P.O. Box 6166
Westerville, OH 43086-6166
TEL: [phone]
FAX: [phone]
www.cutlerhammer.eaton.com/automation
Effective 6/00
•J6 is used to enable/disable all sockets in Bank 1.
Enable – Open/Closed/Closed
Disable – Closed/Closed/Open
•J7 is used to enable/disable socket 1&2 of Bank 2.
Enable – Open/Closed/Closed
Disable – Closed/Closed/Open
•J8 is used to enable/disable the on board battery
Enable – Open/Closed/Closed/Open
Disable – Open/Open/Open/Open
SOFTWARE CONFIGURATION
While the computer is booting up press Alt S. Use the
UP/Down arrows to highlight Bank Link. Press Enter
and choose SSD OFF. Press Enter. Highlight Quit
Mode and press Enter. Highlight Save&Exit and press
Enter. This allows the computer to see both the
retentive memory and the floppy disk drive. For other
software configuration information 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 instructions
below outline how to install the SRAM PC104 BBMC
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 BBMC.
5. With the memory side of the SRAM PC104 BBMC
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.