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Sun Blade 1000 (A28)
Sun Fire 280R (A35)
Netra 20 (N28)

Options 7050 / 7051 / 7052 / 7053

501-4489 501-5030 501-5031 501-5401
128MB 3.3V ECC
7ns SDRAM DIMM
Option 7050
512MB 3.3V ECC
7ns SDRAM DIMM
Option 7051
1G 3.3V ECC
7ns SDRAM DIMM
Option 7052
256MB 3.3V ECC
7ns SDRAM DIMM
Option 7053

Memory Map

J0407 Group 1 Bank 1/3 fa000000 - 1f3ffffff
J0406 Group 0 Bank 0/2 00000000 - f9ffffff
J0305 Group 1 Bank 1/3 fa000000 - 1f3ffffff
J0304 Group 0 Bank 0/2 00000000 - f9ffffff
J0203 Group 1 Bank 1/3 fa000000 - 1f3ffffff
J0202 Group 0 Bank 0/2 00000000 - f9ffffff
J0101 Group 1 Bank 1/3 fa000000 - 1f3ffffff
J0100 Group 0 Bank 0/2 00000000 - f9ffffff

Notes

  1. The minimum requirement is four DIMMs in any group.
  2. DIMMs can be installed in any group order.
  3. Each group addresses 4GB of memory.
  4. Memory slots (Jxxxx) map to same-numbered DIMMs (Uxxxx):
    Slot DIMM
    J0407 U0407
    J0406 U0406
    J0305 U0305
    J0304 U0304
    J0203 U0203
    J0202 U0202
    J0101 U0101
    J0100 U0100

Reference

Sun Blade 1000 Service Manual, 805-4496.



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