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Tandy 1000 SX (250-1051)

Memory

Faxback Doc. # 1183

Note: Refer to Faxback Doc. # 1250 for Main Logic Board Layout.

Memory Expansion Options:

256K DRAM kit:

25-1079 consists of eight 256K x 1 DRAM at 150 nanoseconds.

┌───────────────────────────────────────────────┐

│

Tandy 1000 SX (25-1051) - Expand from 384K to:│

├──────────┬────────────────────────────────────┤

│

Add to Main Logic Board

│

├──────────┼────────────────────────────────────┤

│

640K

│

25-1079

│

└──────────┴────────────────────────────────────┘

Make the following jumper changes when adding additional memory:

Remove jumper from E1 - E2 for 640K RAM.