Specifications

EPC-5A Hardware & Software Reference Manual
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Option Byte 1
This option is used to select the first option byte value for the EXM card intended to
reside in this slot. Option byte 1 typically defines bit 0 as the card enable bit. Other
bits in the option byte are defined by the particular EXM card installed. The proper
value of this option for a slot with no EXM card installed is not defined. The value
typically used is 00h, the default value.
Option Byte 2
This option is used to select the second option byte value for the EXM card intended
to reside in this slot. Option byte 2 is defined by the particular EXM card installed.
The proper value of this option for a slot with no EXM card installed is not defined.
The value typically used is 00h, the default value.
C
P
U
0
1
24
35
Figure 4-9. Slot Numbering.
All slots not occupied by an EXM module should show an ID of FF and OB1/OB2 of
00 00 indicating that no EXM is present.
Consult the appropriate EXM manual for the correct configuration information for
each EXM expansion module installed. Note: Most EXM hardware reference manuals
depict a different BIOS Setup Screen than the one shown here. The ID/OB1/OB2
information is still valid.