NonStop S-Series Server Description Manual (G06.27+)

Memory Addressing and Access
HP NonStop S-Series Server Description Manual—520331-004
4-35
Kseg0 Memory Access
Figure 4-16. Memory Access Through Kseg0 Uses Memory Caches
RISC
Instruction
Processor
Main Memory
Store
Buffer
Write
Buffer
Fill
Secondary
Cache
Instruction
Cache
Data
Cache
Kseg0 Virtual Address
Line Fill
Cache Logic
Primary
Cache Hit?
Secondary
Cache Hit?
Or
Instruction (Read only)
Data (Read)
Data
(Write)
Block Read
Command if
Secondary
Cache Miss
Physical Address
1
2
3
4
5
6
7
8
2
8
VST246.vsd