DEC DECstation 5000 Model 100 Series Hardware Operator's Manual page 183

Device descriptor. This is a general description of the
device. There are three device descriptors:
access drives, such as hard disk and floppy drives;
sequential access drives, such as tape drives; and
for optical compact disc drives.
Memory slot number.
Amount of memory in the slot. The amount can be 4 or
16 megabytes. All slots should have the same amount of
memory, because all memory modules in a workstation
should be the same size.
Table 11-2 shows module codes, including examples of codes for
some TURBOchannel option modules. For more information
about specific option modules, refer to the documentation that
came with the module.
DIR
Using the Console Commands 11–13
for direct
for
SEQ
,
CD-ROM