01083.pdf

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Tandy 1000 HX (25-1053)
Memory
Faxback Doc. # 1083
Note: Refer to Faxback Doc. # 1377 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.
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 HX (25-1053) - 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-07/01/93)

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