                  Model 4P Memory Modification for Gate Array Boards

MOD4PFG2/TXT                                                        Fig 2
                                 Lift R23 Closest to U115-11
 U115-11 >--*-------------------X   |-/\/\/---*---> RAS0
            |                       |  27 Ohm |
            |---12|----\            |         |
                  | #5   11---------|         |
            |---13|----/                      |
            |      U114P                      |
            |      74S08                      |
            |      AND                        |
 U115-3 >---*-----X  -/\/\/- X----------------|---> RAS1
                      Remove R21

   1 U105P - 74LS32
   2 U24P  - 7486
   3 U129P - 74S08
   4 U87P  - 74LS32
   5 U114P - 74S08
   6 U111P - 74S157 or 74157
   7 U110P - 74S157 or 74157
   8 U125P - 74LS244
   9 U85P  - 74LS273
  10 U116P - 7442
  11 U117P - 74S08 For additional memory
  12 U96P  - 74S08 For additional memory
