Standard Features; Bga Cpu; Physical Memory - GE V7768 Hardware Reference Manual

2 • Standard Features

2.1 BGA CPU

2.2 Physical Memory

34 V7768/V7769 Hardware Reference Manual
The V7768/V7769 are single board computers loaded with either an Intel Core 2
Duo or Celeron M processor and compatible with modern industry standard
desktop systems. The V7768/V7769 therefore retain industry standard memory
and I/O maps along with a standard interrupt architecture. The integrated
peripherals described in this section (such as serial ports, USB ports,
CompactFlash drive, video controller and Ethernet controller) are all memory
mapped the same as similarly equipped desktop systems, ensuring compatibility
with modern operating systems.
The following sections describe the standard features of the V7768/V7769.
The V7768 is factory populated with either an Intel Core 2 Duo or Celeron M
processor. The V7769 is factory populated with an Intel Core 2 Duo processor.
To change the memory size or CompactFlash size contact Customer Care to
receive a Return Material Authorization (RMA).
GE Customer Care is available at:
(1-800-433-2682), 1-780-401-7700.
Or, visit our website www.ge-ip.com.
The V7768/V7769 provide DDR2 Synchronous DRAM (SDRAM) as system
memory. Memory can be accessed as bytes, words or longwords.
The SDRAM is accessible to the VME bus through the PCI-to-VME bridge and is
addressable by the local processor.
The V7768/V7769 have a maximum memory configuration of 2 GByte of DDR2
SDRAM memory. This configuration calls for a single 2 GByte SODIMM (one
200-pin SODIMM DDR2 module). The SDRAM is dual-ported to the VME
through the PCI-to-VME bridge and is addressable by the local processor, as well
as the VME slave interface by another VME master. Caution must be used when
sharing memory between the local processor and the VME to prevent a VME
deadlock and to prevent a VME master from overwriting the local processor's
operating system.
NOTE
When using the Configure utility of GE's IOWorks Access to configure RAM, do not request more
than 25 percent of the physical RAM. Exceeding the 25 percent limit may result in known bugs that
causes unpredictable behavior during the boot sequence, and requires the use of an emergency
repair disk to restore the computer. It is recommended that an emergency repair disk be kept up-
to-date and easily accessible.