Chapter 2 Reserving DRAM for SX Accelerated Applications 7
TABLE 2-2 below illustrates the physical address map of a system configured with one
4 MByte VSIMM installed in slot 4 and 16 MByte DSIMMs in the remaining slots.
Thus, on systems configured with 16 MByte DSIMMS, the maximum size of a
physically contiguous block of DRAM is 16 MByte. However, you can reserve
multiple blocks of SXDRAM on such systems. In order to be able to configure a
single block of SXDRAM greater than 16 MByte, the system must be configured with
64 MByte DSIMMs.
TABLE 2-3 illustrates a system configured with one 4 MByte VSIMM and seven 64
MByte DSIMMs.
TABLE 2-2 SPARCstation 10SX System Memory Layout
One 4 MByte VSIMM, Seven 16 MByte DSIMMs
SIMM Slots DSIMM/VSIMM Size Physical Address
Slot 7 16 MByte DSIMM 0x1c000000
Slot 3 16 MByte DSIMM 0xc000000
Slot 6 16 MByte DSIMM 0x18000000
Slot 2 16 MByte DSIMM 0x8000000
Slot 5 16 MByte DSIMM 0x14000000
Slot 1 16 MByte DSIMM 0x4000000
Slot 4 4 MByte VSIMM 0xf0000000
Slot 0 16 MByte DSIMM 0x0
TABLE 2-3 SPARCstation 10SX System Memory Layout
One 4 MByte VSIMM, Seven 64 MByte DSIMMs
SIMM Slots DSIMM/VSIMM Size Physical Address
Slot 7 64 MByte DSIMM 0x1c000000
Slot 3 64 MByte DSIMM 0xc000000
Slot 6 64 MByte DSIMM 0x18000000
Slot 2 64 MByte DSIMM 0x8000000
Slot 5 64 MByte DSIMM 0x14000000
Slot 1 64 MByte DSIMM 0x4000000
Slot 4 4 MByte VSIMM 0xf0000000
Slot 0 64 MByte DSIMM 0x0
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