Figure 4-2. Ucsr Access Mechanisms; Universe Register Map - Motorola MVME2600 Series Reference Manual

Universe (VMEbus to PCI) Chip
4

Universe Register Map

!
Caution
4-8
Figure 4-2 below summarizes the supported register access mechanisms.
VMEbus Configuration
and Status Registers
(VCSR)
UNIVERSE DEVICE
SPECIFIC REGISTERS
(UDSR)
PCI CONFIGURATION
SPACE
(PCICS)

Figure 4-2. UCSR Access Mechanisms

Table 4-1 below lists the Universe registers by address offset. Tables in the
Universe User Manual provide detailed descriptions of each register.
Address offsets in Table 4-1 below apply to accesses from the PCI bus and
to accesses from the VMEbus side using the VMEbus Register Access
Image (Refer to Registers in the Universe User Manual.). For register
accesses in CR/CSR space, be sure to add 508 KBytes (0x7F00) to the
address offsets provided in the table.
Register space marked as "Reserved" should not be
overwritten. Unimplemented registers return a value of 0 on
reads; writes complete normally.
4 Kbytes
1895 9609