Gateway ALR 9250R, User Manual

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30 Gateway ALR 9250R User’s Guide
The wide controller contains a high-performance SCSI bus interface. It
supports SE mode with 8-bit (10 or 20 MB/sec) or 16-bit (20 or 40 MB/sec)
transfers and LVD mode with 8-bit (40 MB/sec) or 16-bit (80 MB/sec)
transfers.
Narrow SCSI connector
The narrow controller contains a high-performance SCSI core capable of
Fast 8-bit SCSI transfers in single-ended mode. It provides programmable
active negation, PCI zero wait-state bursts of faster than 110 MB/sec at 33
MHz, and SCSI transfer rates from 5 to 10 MB/sec.
IDE connector
This is an integrated Ultra-DMA PCI/IDE interface with an IDE connector
capable of controlling up to two IDE devices. Ultra-DMA provides faster
access to IDE devices that are Ultra-DMA compliant while maintaining
support for IDE devices that do not support the Ultra-DMA specification.
The IDE controller supports:
•
PIO and IDE DMA/bus master operations
•
Mode 4 timings
•
Transfer rates up to 33 MB/sec
•
Buffering for PCI/IDE burst transfers
•
Master/slave IDE mode
•
Up to two drives for one IDE channel
The IDE connector is connected to the auxiliary board on the back of the
cobracketted slim-line diskette/CD-ROM drives via a 40-wire ribbon cable.
Diskette drive connector
The diskette drive controller and connector on the system board can support
up to two diskette drives of 1.44-MB and 2.88-MB formats. This connector
is connected to the auxiliary board on the back of the cobracketted slim-line
diskette/CD-ROM drives via a 34-wire ribbon cable.
Note:
You can connect an IDE
signal cable, up to a
maximum of 18 inches, to
the IDE connector on the
system board. The cable
can support two devices,
one at the end of the cable
and one six inches from the
end.
9250R.book Page 30 Friday, April 9, 1999 9:44 AM