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501-1122



4M VME 3/75

 Basically the same as 501-1111, but four megabytes of
  memory and different switch settings.

 Jumper J3101 aqt the left far edge should be unjumped, and J3102 just nearer
  should be jumped.

 U3118

  1     not used
  2     start address 0x00200000 (is 3rd through 6th meg)
  3     start address 0x00400000 (is 5th through 8th meg) not documented for 2M
         CPU boards
  4     start address 0x00600000 (is 7th through 10th meg) not documented for
         4M CPU boards
  5     start address 0x00800000 (is 9th through 12th meg) not documented for
         2M CPU boards
  6     start address 0x00A00000 (is 11th through 14th meg) not documented for
         4M CPU boards
  7     start address 0x00C00000 (is 13th through 16th meg) not documented for
         2M CPU boards
  8     not used

 U3119

  1     not used
  2     not used
  3     U3118 is 2
  4     U3118 is 3
  5     U3118 is 4
  6     U3118 is 5
  7     U3118 is 6
  8     U3118 is 7

 Power requirements are +5V @ 2.3A.

  




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