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TT-16.002
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1991-08-21
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AMI TECH TIP
TECH TIP NO. 16.002
DATE: May 9, 1991
BOARD TYPE: Enterprise II, Series-16
BOARD REVISION: D or D1
BOARD FREQUENCY: 25MHz or 33MHz
RELEASED BY: Engineering Dept.
PROBLEM: The Floppy Disk Controller on the Enterprise II motherboard
is not compatible with a streaming tape drive. (This
problem will also affect the Enterprise I, Series-25
motherboard. See Tech Tip 25.002).
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 U76. It is in a socket but a
special tool is needed to remove it from the socket.