M440LX Server System Product Guide 31
PCI Expansion SlotsThe seven PCI bus master slots on the system board provide for expansion
and performance enhancement. One of the PCI connectors shares a
common chassis I/O expansion slot with an ISA connector; you can use
either PCI or ISA in the slot, but not both.
The PCI bus operates at up to 33 MHz and provides
• 32-bit memory addressing
• Support for 5 V and 3.3V cards
• Burst transfers of up to 133 MB per second
• 8-, 16-, or 32-bit data transfers
• Plug and Play configuration
• Hierarchical bus to maximize connectivity
PCI Video ControllerThe onboard Cirrus Logic CL-GD54M40 32-bit video graphics accelerator
contains a super video graphics array (SVGA) controller that is fully
compatible with these video standards: CGA†, EGA†, Hercules† Graphics,
MDA†, and VGA. The standard server configuration comes with 512 KB of
onboard video memory allowing pixel resolutions of up to 1024 x 768 and
16 colors.
The SVGA controller supports analog VGA monitors (single and multiple
frequency, interlaced and noninterlaced) with a maximum vertical retrace
interlaced frequency of 87 Hz.
The buffer size of the onboard video memory can be increased from 512 KB
to 1 MB with one 40-pin 256 K x 16, 60 ns fast-page dynamic random access
memory (DRAM). 1 MB of DRAM will allow the controller to support
132-column text modes and high resolution graphics with 1280 x 1024 x 16
colors. Depending on the environment, the controller displays up to 64,000
colors in some video resolutions. It also provides hardware accelerated bit
block transfers (BITBLT) of data.