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4.2 Controller Configuration
To set the EV-390/391/392 controller card for each drive, you
must move jumper positions 1-4 on SW1. Jumper positions 1
and 2 control Drive 2 (your second drive) and Jumper
positions 3 and 4 control Drive 1 (your first drive).
The EPROM chip on the EV-390/391 controller (see Figure
3 and 4 for the location of the EPROM chip on the
controllers) comes in several versions (labeled 3.92A, 3.93,
3.94, 3.95, 3.96 and 3.97) that support specific drive types.
Table 1A: ROM BIOS Disk Type Selection (EV390/391) shows
the proper configuration of SW1 (see Figures 3 and 4 for
SW1 configuration options) and the type of EPROM needed
for the drives.
There is only one EPROM version available on the EV-392.
Table 1B: ROM BIOS Disk Type Selection (EV-392) shows the
proper configuration of SW1 (see Figure 5 for SW1
configuration options) pertaining to each drive type.
EXAMPLE: For the Seagate ST4096 80MB drive connected
to the EV-390/391 controller, make sure the EPROM is
labeled "3.95," and make sure no jumpers are installed (option
A from Figures 3 and 4).
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