Cache Memory
Cache memory requires installation of a tag RAM device in U10
followed by an arrangement of additional devices listed in the table
below. Figure 3-2 illustrates the physical cache memory layout.
Cache Memory
Size
Tag RAM
(U10)
Data RAM
JP9
JP20
RP Sel
Short
64KB
8K x 8
1 pc
8K x 8,
8 pcs (U11-U18)
1-2
1-2
RP15
128KB
8K x 8
1 pc
32K x 8,
4 pcs (U11-U14)
2-3
1-2
RP16
256KB
32K x 8 or 16K
x 8 1PC
32K x 8,
8 pcs (U11-U18)
2-3
1-2
RP17
256KB
32K x 8 or 16K
x 8 1PC
64K x 8,
4 pcs (U11-U14)
2-3
1-2
RP18
512KB
32K x 8
1 pc
64K x 8,
8 pcs (U11-U18)
2-3
2-3
RP19
Manual No. 771924-D03, Mar. 1995
3-5
Memory Configuration
Figure 3-2. Cache Memory Layout
