TANDY 1000 EX  (250-1050)        Memory                Faxback Doc. # 1063

Note: Refer to Faxback Doc. # 1379 for installation location on Main
Logic Board.

Memory Expansion Options:

256K DRAM kit
     The 25-1079 consists of eight 256K X 1 DRAMS at 150 nanoseconds.
     RSU # 10542140

Memory Boards
     The √25-1062 is a plus-style board which comes with 128K of RAM.
     The √25-2062 is a plus-style board which comes fully populated with
            512K RAM and comes with software to allow the extra 128K RAM to
            be used as a RAMDISK.
     (This product can be ordered from Tandy National Parts, AX-2502062)

√ = Discontinued Radio Shack Product
┌───────────────────────────────────────────────────────────┐
│ Tandy 1000 EX (25-1050) - Expand from 256K:               │
├──────────┬────────────────────┬───────────────────────────┤
│          │     Memory Board   │   Add to Memory Board     │
├──────────┼────────────────────┼───────────────────────────┤
│ 384K     │     √25-1062       │       N/A                 │
├──────────┼────────────────────┼───────────────────────────┤
│ 640K     │     √25-1062       │     25-1079               │
├──────────┼────────────────────┼───────────────────────────┤
│ 768K     │     √25-2062       │       N/A                 │
└──────────┴────────────────────┴───────────────────────────┘

Note: Use either the 25-1062 or the 25-2062 Memory-Plus board, both boards
      can not be used at the same time. The 25-2062 board is the preferred
      upgrade choice.

┌───────────────────────────────────────────────────────────┐
│ Jumper Settings:(25-1062 only)                            │
├──────────┬──────────────┬────────────┬────────────────────┤
│ Board    │  Memory Kit  │   Jumper   │    Total Memory    │
├──────────┼──────────────┼────────────┼────────────────────┤
│ 25-1062  │   N/A        │   E1-E2    │    384K            │
├──────────┼──────────────┼────────────┼────────────────────┤
│ 25-1062  │  25-1079     │   E2-E3    │    640K            │
└──────────┴──────────────┴────────────┴────────────────────┘

(rjs/jej-05/11/94)