System Ram; Compatible Memory Modules; Clearing Non-Volatile Ram (Nvram); Cmos Ram - VersaLogic Copperhead VL-EBX-41 Reference Manual

System RAM

C M
OMPATIBLE
The Copperhead accepts two 204-pin SO-DIMM memory modules with the following
characteristics:

Size

Voltage

Type

Clearing Non-volatile RAM (NVRAM)

You can clear NVRAM and reset the BIOS settings to factory defaults by following the
instructions below.
1. Power off the Copperhead.
2. Install a jumper on V1[1-2].
3. Power on the Copperhead and wait 10 seconds or more.
4. Power off the Copperhead.
5.
Remove the jumper from V1[1-2]. The board will not boot if you do not remove this
jumper.
6.
Power on the Copperhead.
Note: Whenever NVRAM cleared, it is good practice to clear CMOS RAM (using Jumper V3) at
the same time.

CMOS RAM

C CMOS RAM
LEARING
A jumper may be installed into V3[2-3] to erase the contents of the CMOS RAM and the Real-
Time Clock. When clearing CMOS RAM:
1. Power off the Copperhead.
2. Remove the jumper from V3[1-2], install it on V3[2-3] and leave it for four seconds.
3. Move the jumper back to V3[1-2].
4. Power on the Copperhead.
Note: Whenever CMOS RAM is cleared, it is good practice to clear NVRAM (using jumper
V1[1-2]) at the same time.

Real-time Clock

The Copperhead features a battery-backed 146818-compatible real-time clock/calendar chip.
Under normal battery conditions, the clock maintains accurate timekeeping functions when the
board is powered off.
EBX-41 Reference Manual
M
EMORY ODULES
Up to 16 GB total or 8 GB per module,
supports 1333 and 1600 MT/s
1.35V
DDR3 (VersaLogic VL-MM9 Series modules)
RTC
AND
System Features
24