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TT25.002
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1991-08-21
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AMI TECH TIP
TECH TIP NO. 25.002
DATE: May 9, 1991
BOARD TYPE: Enterprise I, Series-25
BOARD REVISION: B
BOARD FREQUENCY: 25MHz or 33MHz
RELEASED BY: Engineering Dept.
PROBLEM: The Floppy Disk Controller on the Enterprise I motherboard
is not compatible with a streaming tape drive. (This
problem will also affect the Enterprise II, Series-16
motherboard. See Tech Tip No. 16.002).
REASON: The Intel 82077-1 Floppy Disk Controller used on the
motherboard does not support streaming tape drives.
SOLUTION: Intel now has a version of the Floppy Disk Controller
that is compatible with streaming tape drives. The Intel
part Number is 82077AA-1. All boards should be shipped with
the new 82077AA-1 Floppy Disk Controller in the future. If
a customer has a board with the 82077-1 Floppy Disk
Controller and needs to use a streaming tape drive, the
Floppy Disk Controller should be swapped for the new one.
It is a 68-pin PLCC package at U65. It is in a socket but a
special tool is needed to remove it from the socket.