Technical Information 1-7
Table 1-4 System Memory Map
Memory Address
Size
Function
100000-18000000
384 MB
Extended Memory
FC000-FFFFF
16 KB
Boot Block
FA000-FBFFF
8 KB
ECSD (Plug and Play configuration and DMI)
F9000-F9FFF
4 KB
Reserved for BIOS
F8000-F8FFF
4 KB
OEM Logo or Scan User Flash
E8000-E7FFF
64 KB
POST BIOS
E0000-E7FFF
32 KB
POST BIOS (available as UMB)
C8000-DFFFF
96 KB
Available High DOS memory (open to ISA
and PCI bus)
A0000-C7FFF
160 KB
Video memory and BIOS
9FC00-9FFFF
1 KB
Extended BIOS Data (movable by memory
managers)
80000-9FBFF
127 KB
Extended conventional memory
00000-7FFFF
512 KB
Conventional memory
Plug and Play Support
The system comes with Plug and Play BIOS technology. Plug and Play eliminates
complicated setup procedures for installing Plug and Play expansion boards.
To add a Plug and Play expansion board, simply power off the system, install the board, and
power on the system. There are no jumpers to set and no system resource conflicts to
resolve. Plug and Play automatically configures the board for the system. The system also
supports non-Plug and Play boards.
Plug and Play is controlled by the Plug and Play BIOS and the system’s operating system.
The Plug and Play BIOS is stored in the Intel PA28FB200BX Flash EPROM on the system
board.
The Plug and Play BIOS adds several steps to the POST process. During POST, the Plug
and Play evaluates the configuration of installed boards and assigns available system
resources to the devices. On completion of Plug and Play POST, the operating system
checks to see if there are any additional resources required, then assigns available resources
to the devices.
Summary of Contents for DIRECTION L - SERVICE
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