Setup and Operation 2-21
Table 2-10 Advanced Chipset Control Parameters (cont’d)
Parameter
Options
Description
0 - Active RAS# Mode
Enable
Disable
If Enabled, DRAM interface is in 0-
Active RAS# mode. If Disabled, DRAM
interface is in 1-Active RAS# mode.
Parity Error
Enable
Disable
If Enabled, parity errors generated
during DRAM read cycles are masked.
If Disabled, parity errors are not
marked.
DRAM Burst Timing
50 ns DRAMs
60 ns DRAMs
70 ns DRAMs
Selects DRAM burst timing.
RAS# Wait State
Enable
Disable
If Enabled, one additional wait state is
inserted before RAS# is asserted.
CAS# Wait State
Enable
Disable
If Enabled, one additional wait state is
inserted before RAS# is asserted.
There is no additional delay between
CAS# assertions.
Plug and Play OS Parameters
The system comes with Plug and Play system support already installed and ready for
installation of a plug and play operating system (O/S). With this support, the system
automatically configures newly added ISA Plug and Play cards. You only need to install
the board and boot the system. The system automatically allocates resources to the board.
Plug and Play boards are industry-standard architecture (ISA) boards with Plug and Play
capability. You can enable Plug and Play directly from the Advanced menu using the
command keys. Selecting “Yes” from the menu enables the Plug and Play option (see
Table Section 2-11). “No” is the default setting, as most current ISA boards do not have
Plug and Play capability. However, you can include them in your system, with or without
Plug and Play capabilities.
To work in a system, boards often use a variety of dedicated resources. If two boards try to
use the same resource, one board might not work or errors may occur.
NOTE:
Generally, a resource can be used by
only one board or device. However, some boards
can share the same DMA or IRQ resources.
Review the board manufacturer's documentation
to see if the board supports shared resources.