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MODEL 189230

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

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

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 (CON’T)

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.