2. Getting Started
9
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ZT 8953 with integrated drive (for example, ZT 8953-50) requires both +5 V and
+12 V for the drive
See Appendix B, "
Specifications
", for specific drive requirements.
Ziatech recommends vertical mounting for applications in which a fan is not used.
Horizontal mounting requires a minimum air flow of 30 cubic feet/minute passing over
the surface of the board.
INSTALLATION
If the ZT 8952 or ZT 8953 is used as an integrated unit you need only insert it into the
card cage. For non-integrated usage the drive needs to be mounted and a cable run
between the ZT 8952-0 and the drive. Be sure that the interfacing cable is no longer
than 18 inches.
The ZT 8952 is supported by Ziatech BIOS version 3.2 or greater on CPU boards that
do not have an onboard IDE interface (for example, ZT 8910).
The ZT 8952 includes several jumper options that tailor the operation of the board to
specific application requirements. The following jumper configurations are suggested.
These configurations will vary depending upon the application.
16-Bit Vs. 8-Bit STD 32 Transfers
Jumper W2 controls whether or not the board looks at BHE* on the backplane. This
jumper must be installed for BHE* to be decoded and 16-bit transfers to take place in
STD 32 backplanes with 16-bit processors (SA16). In an 8-bit backplane W2 should be
removed because STD-80 CPUs drive BHE* (MEMEX) in non-standard fashion. W2
must be installed for SA16 CPU boards (for example, ZT 8902 or ZT 8911).
Disabling the ZT 8952 Controller
You can disable the logic on the ZT 8952 by removing W9. This procedure may be
useful for diagnostic/debugging purposes.
Interrupt Selections
Jumpers W3-W7 and W11-W15 select which, if any, interrupt the IDE interface can
drive to the STD bus. W3-W7 select one of five frontplane interrupts, while W11-W15
select the backplane interrupt to be driven. The ZT 8902, ZT 8911, and all STD 32
STAR SYSTEMS require W15 to be installed.
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