Disk Drives - Zenith Z-100 Reference Manual

~ 9 . 2

Disk Drives

Configuration
Various configuration jumpers and a switch on the Winchester drive controller
are employed on the drive controller and drive signal separator cards to implement
optional operational modes. This section will discuss the positioning of those jurn-
pers for your particular application.
Winchester (Hard Disk) Controller
If you have a Winchester (hard disk) drive installed, refer to Figure 9.1 for the
location of the two jumpers resident on the Winchester drive controller card.
Figure 9.1. Winchester Controller Configuration
The jumper between E17 and E18 is provided for test purposes and is not normally
jumpered.
The jumper on E21 is an address select jumper used to determine whether address
C8000 or F4000 is used for the Winchester controller information. As factory
configured (not jumpered), C8000 is selected. If E21 is jumpered, F4000 is selected.