Megarac Technical Specifications - American Megatrends 780 Hardware Manual

MegaRAC Technical Specifications

Item
Processor
Memory
Out-of-band
Access
Hardware
Health
Parameter
Monitoring
Hard Reset and
Power Cycle
BIOS
Functions
The technical specifications for the MegaRAC card and
other technical information are:
Description
The MegaRAC card has an Intel 80L960JA 3.3V embedded 32-bit
processor running at 16 MHz. This processor includes 2 KB of
instruction cache and 1 KB of data cache with write-through
operation. The MegaRAC card has an AMI MG9063 ASIC that
interfaces between the host PCI bus and the local i960JA
processor.
MegaRAC includes 2 MB flash ROM that contains the firmware
image and DRAM for operational memory. The MegaRAC card
includes 16MB DRAM cache memory. The firmware will operate
from this memory. The firmware will maintain adequate stack and
heap for all internal processing. A 128 KB NVRAM area provides
storage for configuration information, event logs, and captured
text screens.
Out-of-band access is established through a path other than the
LAN or WAN, such as a telephone line or a separate network line.
It requires an onboard 10 Mbps ISA LAN using an SMC 91C94
network controller chip, an onboard serial port, and a Fax/Modem
PC Card. A Cirrus Logic CL-PD6710 socket controller supports
the Fax/Modem PC Card.
Monitors hardware health parameters (voltages, temperatures, fan
status, and chassis intrusion.)
Used to initiate an immediate server boot. The MegaRAC card can
detect when the server has lost power or has been reset by a
watchdog timer it provides to the firmware.
The BIOS on the server motherboards allows you to capture video
text sequences the firmware stores in NVRAM. The boot
sequences and I/O Port 0080h outputs are captured and stored in
NVRAM. The BIOS contains descriptive strings that expand the
captured codes.
Chapter 1 Overview 7