Cisco RSP1 Installation And Configuration Manual page 24

Reference Information
Replacing and Upgrading DRAM SIMMs
The system DRAM resides on up to four SIMMs on the RSP1. The DRAM SIMM sockets are U4
and U12 for bank 0, and U18 and U25 for bank 1. The default DRAM configuration is 16 MB (two
8-MB SIMMs in bank 0). (See Figure 5.)
Note
in the following illustrations are generic representations of the actual DRAM SIMMs for your RSP1.
To be assured that you are using the correct SIMMs, refer to the specific part or product numbers
indicated in the approved vendor list (AVL) and by your DRAM upgrade requirements.
This section describes the steps for increasing the amount of DRAM by replacing up to four SIMMs
that you obtain from an approved vendor.
Figure 5
The SIMM sockets use the thumb tabs that are often used in PCs and other computer equipment.
Each RSP1 SIMM socket has two metal retaining springs, one at each end. (See Figure 6 on
page 26.) When a SIMM is fully seated in the socket, the retaining springs snap over the ends of the
SIMM to lock it in the socket.
24 Route Switch Processor (RSP1) Installation and Configuration
The total number of memory devices per SIMM differs for each manufacturer. The SIMMs
RSP1 DRAM SIMMs
Bus connector
DRAM
SIMMs
U1
Flash card
(PCMCIA) slot
U24
U4
Bank 0
U12
U18
Bank 1
U25
Flash SIMM Auxiliary port
holder
CPU
ROM monitor
(boot ROM)
NVRAM
U17
Console port