Specifications

Futurebus+ Bus Support
15.2 Futurebus+ Address Space
Figure 15–1 32 Bit Futurebus+ Address Space
32 bit Futurebus+ address space
ZK−6726A−GE
0000 0000
EFFF FFFF
F000 0000
FFFF FFFF
CSRs
A32
Memory
Space
Use A32
Equivalent
A64
Memory
Space
0000 0000 0000 0000
0000 0000 EFFF FFFF
0000 0000 F000 0000
FFFF FFFF FFFF FFFF
15.3 Futurebus+ CSR Addressing
Futurebus+ requires that all nodes support A32 addressing. While referencing
CSRs only 32 bit addressing should be used. Futurebus+ A32 space and the
format of an A32 CSR address are shown in Figure 15–2.
15–2