A. Jumper Configurations
49
W8
Drives PDIAG low on the IDE interface. Some drives require this at all times. No drives
currently shipped by Ziatech require installation of this jumper. Factory default is not
installed.
W8
FUNCTION
IN
PDIAG low (logical 0)
†
OUT
PDIAG high (logical 1)
W9
Enables or disables control logic. Removing this jumper lets a drive be powered by the
ZT 8952 but controlled via an external IDE interface. Removing the jumper does not let
the board drive the backplane with data during backplane reads to I/O space normally
decoded by the ZT 8952. This jumper is normally left in. Factory default is installed.
W9
FUNCTION
†
IN
Enables control logic
OUT
Disables control logic
†
Factory default configuration
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