Presence Detect Register; Pci Bus Status Registers; Table 3-9 Pci Bus 1 Status Register - SMART Embedded Computing MVME4100 Programmer's Reference Manual

Register Descriptions
3.1.7

Presence Detect Register

The MVME4100 provides a Presence Detect Register that may be read by the system
software to determine the presence of optional devices.
Table 3-8
REG
BIT
Field
OPER
RESET
PMC1P
PMC2P
XEP
ERDY1
ERDY2
RSVD
3.1.8

PCI Bus Status Registers

The MVME4100 Status Registers provide PCI bus configuration information for each of the
PCI busses.
Table 3-9
REG
BIT
Field
OPER
RESET
32
Presence Detect Register
Presence Detect Register - 0xF200 0006
7 6 5
RSVD RSVD ERDY2
R
0 0 0
PMC Module 1 Present. If cleared, there is no PMC module installed in site 1. If set,
the PMC module is installed.
PMC Module 2 Present. If cleared, there is no PMC module installed in site 2. If set,
the PMC module is installed.
XMCspan Present. If cleared, there is no XMCspan module installed. If set, the
XMCspan module is installed.
EREADY1. Indicates that the PrPMC module installed in PMC site 1 is ready for
enumeration when set. If cleared, the PrPMC module is not ready for enumeration. If
no PrPMC is installed, this bit is always set.
EREADY2. Indicates that the PrPMC module installed in PMC site 2 is ready for
enumeration when set. If cleared, the PrPMC module is not ready for enumeration. If
no PrPMC is installed, the bit is always set.
Reserved for future implementation
PCI Bus 1 Status Register
PCI Bus 1 Status Register - 0xF200 0008
7 6 5
RSVD RSVD RSVD
R R R
0 0 0
MVME4100 Single Board Computer Programmer's Reference (6806800H19D)
4 3 2
ERDY1 RSVD XEP
0 0 X
4 3
RSVD PCI_1_64B PCIX_1
R R
0 1
Register Descriptions
1 0
PMC2P PMC1P
X X
2 1 0
PCI_1_SPD
R R R
X 1 0