Technical data

Register Descriptions
MVME4100 Single Board Computer Programmer’s Reference (6806800H19B)
35
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 Presence Detect Register
REG Presence Detect Register - 0xF200 0006
BIT76543 2 10
Field RSVD RSVD ERDY2 ERDY1 RSVD XEP PMC2P PMC1P
OPER R
RESET00000 X XX
PMC1P PMC Module 1 Present. If cleared, there is no PMC module installed in site 1. If set, the PMC
module is installed.
PMC2P PMC Module 2 Present. If cleared, there is no PMC module installed in site 2. If set, the PMC
module is installed.
XEP XMCspan Present. If cleared, there is no XMCspan module installed. If set, the XMCspan
module is installed.
ERDY1 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.
ERDY2 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.
RSVD Reserved for future implementation