Option ROM,
Continued
Name
Description
Option revision
This number controls changes
in both the option hardware and
firmware.
Option index value
An index value of the last DCT entry.
A zero in this field indicates a single
DCB for the device, a one indicates
two device control blocks for this
device. An option that occupies the
storage option slot can have the
values of zero or one. An option that
occupies the video option slot can
have the values of zero, one, or two.
Reserved for expansion
These 32 bytes are reserved.
Device configuration table
template
The device implemented by the
option must have an associated
device configuration table template.
The DCT contains static and
dynamic data and pointers to code
required for the device.
2–19
