
TANDON CORPORATION

MODEL 189230

Processor              80286
Processor Speed        6/8/10MHz
Chip Set               Unidentified
Maximum Onboard Memory 3MB (2MB on external memory card)
Cache                  None
BIOS                   Unidentified
Dimensions             355mm x 305mm
I/O Options            None
NPU Options            80287

[Image]

                        USER CONFIGURABLE SETTINGS

                 Setting                     Label           Position

     Factory configured - do not alter      SW1/1             N/A

     Factory configured - do not alter      SW1/2             N/A

     Video type select 80 characters        SW1/3             Off

     Factory configured - do not alter      SW1/4             Off

     Factory configured - do not alter      SW1/5             N/A

     Factory configured - do not alter      SW1/6             N/A

     Factory configured - do not alter      SW1/7             N/A

                           DRAM

  Note: The orientation and chip sizes are unidentified.

                     DRAM SWITCH

  Expansion size     Total size           SW1/8

      128KB             640KB              Off

      512KB              1MB               On

[Image]

                                DRAM

    Size         Bank 0       Bank 1        Bank 2        Bank 3

    512KB      (18) 41256      None          None          None

     1MB       (18) 41256   (18) 41256       None          None

    1.5MB      (18) 41256   (18) 41256    (18) 41256       None

     2MB       (18) 41256   (18) 41256    (18) 41256    (18) 41256

                            DRAM SWITCH (CONT)

  Memory before    Memory after    SW1/1   SW1/2   SW1/3    SW1/4   SW1/5

    512-640KB      2560-2688KB     Off      Off     Off      On      Off

     1024KB           3072KB       Off      Off     Off      On      On

   2560-2688KB     4608-4736KB     Off      Off     On       On      Off

     3072KB           5120KB       Off      Off     On       On      On

   4608-4736KB     6656-6784KB     Off      On      Off      On      Off

     5120KB           7168KB       Off      On      Off      On      On

   656-6784KB      8704-8832KB     Off      On      On       On      Off

     7168KB           9216KB       Off      On      On       On      On

   8704-8832KB     10752-10880KB    On      Off     Off      On      Off

     9216KB          11264KB        On      Off     Off      On      On

  10752-10880KB    12800-12928KB    On      Off     On       On      Off

     11264KB         13312KB        On      Off     On       On      On

  12800-12928KB    14848-14976KB    On      On      Off      On      Off

     13312KB         15360KB        On      On      Off      On      On

  14848-14976KB      15744KB        On      On      On       On      Off

     15360KB         15744KB        On      On      On       On      On

       MISCELLANEOUS TECHNICAL NOTE

  The location of pin 1 is unidentified.

