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VMICPCI-7755 Product Manual
CPU Socket
The VMICPCI-7755 CPU socket is factory populated with a high-speed Pentium III
processor. The CPU speed and RAM/flash size are user specified as part of the
VMICPCI-7755 ordering information.
To change CPU speeds, RAM size or flash size contact customer service to receive a
Return Material Authorization (RMA).
VMIC Customer Service is available at: 1-800-240-7782, or E-mail us at
[email protected].
Physical Memory
The VMICPCI-7755 provides Synchronous DRAM (SDRAM) as on-board system
memory. Memory can be accessed as bytes, words or longwords.
The VMICPCI-7755 accepts one 144-pin SDRAM SODIMM for a maximum capacity
of 512 Mbytes. The on-board DRAM is dual-ported to the CompactPCI bus through
the PCI-to-PCI bridge and is addressable by the local processor.
NOTE:
When using the Configure utility of VMIC’s IOWorks Access with Windows
NT 4.0 to configure RAM, do not request more than 25 percent of the physical RAM.
Exceeding the 25 percent limit may result in a known Windows NT bug that causes
unpredictable behavior during the Windows NT boot sequence, and requires the use
of an emergency repair disk to restore the computer. The bug is present in
Windows NT 4.0 service pack level 3. It is recommended that an emergency repair
disk be kept up-to-date and easily accessible.
The VMICPCI-7755 includes 32 Kbyte of non-volatile SRAM which can be accessed by
the CPU at any time, and is used to store system data that must not be lost during
power-off conditions.
NOTE:
Memory capacity may be extended as parts become available.
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