Pci Presence Detect Register; Table 1-11. Pci Presence Detect Register - Motorola MVME2100 Programmer's Reference Manual

Product Data and Memory Maps
1

PCI Presence Detect Register

REG
BIT
FIELD
OPER
RESET
PRSNT8
PRSNT7-5
PRSNT4
PRSNT3
PRSNT2
PRSNT1
1-14
The MVME2100 contains a PCI Presence Detect Register that may be read
by the system software to determine the presence of optional PCI devices.
The following table provides the necessary information on the PCI
Presence Detect Register.

Table 1-11. PCI Presence Detect Register

PCI Presence Detect Register - 0xFFE02XXX
0 1 2
X 1 1
A cleared condition indicates the presence of a PMC Carrier
board connected to the PCI expansion connector. While a set
condition indicates the absence of the PMC Carrier board.
Reserved for future PCI devices.
A cleared condition indicates the presence of a board in the
PC-MIP Type II slot 2. While a set condition indicates the
absence of a board in the PC-MIP Type II slot 2.
A cleared condition indicates the presence of a board in the
PC-MIP Type II slot 1. While a set condition indicates the
absence of a board in the PC-MIP Type II slot 1.
A cleared condition indicates the presence of a board in the
PC-MIP Type I slot 2. While a set condition indicates the
absence of a board in the optional PC-MIP Type I slot.
A cleared condition indicates the presence of a board in the
optional PMC/PC-MIP slot. While a set condition indicates
the absence of a board in the optional PMC/PC-MIP slot.
3 4 5
R
1 X X
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6 7
X X