19 features, Scsi controllers, Peripheral controller – Zenith Data Systems MT2000 User Manual

Page 33

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2-19

Features

Supports 72Hz refresh, non-interlaced at: 640x480,
800x600, , or 1280x1024 resolutions.

Displays of up to 16M colors at 640x480 and
800x600 resolutions, 64K colors at 1024x768
resolutions and 256 colors at 1280x1024 resolutions
with the optional 2 MB video memory.

Note: SVGA drivers may be required to use the high-
performance video modes.

SCSI Controllers

The system board includes an embedded ultra wide
SCSI-2 controller (Adaptec® AIC-7880) and a
fast/narrow SCSI-2 controller (Adaptec® AIC-7860),
channels A and B, integrated as PCI bus masters. The
AIC7860 supports data paths of 8-bit (fast/narrow
SCSI) at a data transfer rate of 10 MB/sec and the
AIC7880 supports data paths of 16-bit (fast/wide or
ultra /wide SCSI) at a data transfer rate of 20 MB/sec
or 40 MB/sec. As PCI bus masters, these controllers
support burst data transfer rates up to the maximum of
133 MB/sec.

On this server, channel A is cabled to the six hard
drives in the SCSI hard drive bays. Channel B is cabled
to the three SCSI devices in the 5 1/4-inch removable
media drive bays and the riser card (containing
external I/O connectors) at the rear of the system.

Peripheral Controller

The advanced integrated peripheral controller supports
2 serial ports and one parallel port through the I/O
riser board (Figure 2-3, D). The advanced integrated
peripheral controller also supports the connection of 2
diskette drives (Figure 2-3, K).

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