2. Getting Started
10
IDE Diagnostic
Some IDE drives feature an internal diagnostic for use when two drives are daisy
chained. Both drives execute this diagnostic. The slave drive then indicates to the
master a successful completion of the diagnostic.
Jumper W8 lets you drive the signal low for any master that needs this default. No drive
currently shipped by Ziatech requires installation of this jumper.
Jumper Requirements—16-Bit Transfers
Installed: W1, W2, W5, W9, W10A
Not installed: W3, W4, W6, W7, W8, W10B, W11, W12, W13, W14, W15
This configuration selects 16-bit transfers and does not drive any backplane interrupt.
W5 is loaded to select FP5*, but some versions of STD DOS will use alternative
selections. If you need an interrupt, remove the jumper from W5 and use it to select the
desired interrupt. The ZT 8902, ZT 8911, and all STAR SYSTEMS require W15 to be
installed.
Jumper Requirements—8-Bit Transfers
Installed: W1, W5, W9, W10A
Not installed: W2, W3, W4, W6, W7, W8, W10B, W11, W12, W13, W14, W15
This configuration does not allow the ZT
8952 to respond to BHE*. Use this
configuration when installing this board in non-STD 32 card cages. Some CPU cards
drive BHE* (STD-80 MEMEX) in non-standard ways and will cause the board to
misalign data. For this reason we recommend that W2 be removed in 8-bit CPU
systems or in STD-80 backplanes.
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