Cisco ciscoBus CSC-C2CTR Installation And Upgrade Instructions page 34

Upgrading Microcode
Upgrading Microcode
Network interface cards contain microcode, which is interface-specific software that interoperates
with the system software. The CSC-C2CTR microcode is contained on a single erasable
programmable read-only memory (EPROM) component, which is located in socket U98. You may
need to replace the CSC-C2CTR EPROM when upgrading your system software or to add new
functionality to the card when it becomes available. Use the show controller cbus command
(described in the section "System Compatibility Requirements" on page 6) to display the current
microcode version installed on the CSC-C2CTR and all ciscoBus interface cards. Refer to Figure 16
for component locations while performing the following steps.
Step 1
Step 2
Step 3
Figure 16
Step 4
Step 5
Caution
damaged and will have to be replaced.
Step 6
34 ciscoBus Token Ring Card and Applique Installation and Upgrade Instructions
Turn OFF the chassis power, open the front access panel, and remove the CSC-C2CTR as
described in steps 1 through 7 of "Installing the CSC-C2CTR Interface Card" on page 19.
Slip on an ESD-preventive wrist strap and connect it to the chassis as described in the
section "Preventing Electrostatic Discharge Damage." Make certain that power to the
chassis is OFF, but that the power cord is fully connected.
Referring to Figure 16, locate the EPROM in socket U98. Note the orientation of the notch;
the new EPROM must be inserted with the same orientation.
Microcode EPROM Location
LEDs TR 0 TR 1
(4)
Use a chip extractor to remove the EPROM from its socket. If you do not have a chip
extractor available, use the tip of the screwdriver blade to gently pry the EPROM out of its
socket.
Install the new EPROM in socket U98. Make sure that the notched end has the same
orientation as the EPROM you removed. Do not use the orientation of the label to align the
new EPROM.
If the microcode EPROM is installed backwards when the power is turned on, it will be
Replace the card in the card cage. Place your thumbs on the ejector levers, and push the
card in firmly until it snaps into place and is firmly seated in the slot.
Microcode
EPROM
TR 2 TR 3