2–4
Generic Installation
Mode Select
Jumper
IMPORTANT
The mode select jumper is a USER-SELECTABLE feature
for the embedded drive only. If you do not select the
correct mode, the drive does not operate properly.
The mode select jumper has two modes:
Mode 0 — Jumper Out. In this mode the drive block size
is 2 kilobytes. Use Mode 0 under MS–DOS and SCO UNIX
operating systems.
Mode 1 — Jumper In. When the jumper is installed, the
drive operates with a block size of 512 bytes. Use Mode 1
under VMS and ULTRIX operating systems.
The mode select jumper does not affect other operations.
NOTE
The microcode revision reported by the RRD42 disc
drive depends on the mode selected.
Summary of Contents for RRD42
Page 1: ...RRD42 Disc Drive Owner s Manual Order Number EK RRD42 OM 003 Digital Equipment Corporation...
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