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Tandon 2MB Memory Option Board

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Jumper Settings

Card Type

Memory card

Chipset/Controller

N/A

I/O Options

N/A

Maximum DRAM

2MB

50661-1.png

DRAM SIZE SELECTION

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(18) 256K x 1

NONE

NONE

NONE

1024KB

(18) 256K x 1

(18) 256K x 1

NONE

NONE

1536KB

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

NONE

2048KB

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

(18) 256K x 1

DRAM ADDRESS SELECTION

System RAM

Address

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

512-640KB

100000-2FFFFFh

Off

Off

Off

On

Off

1024KB

180000-37FFFFh

Off

Off

Off

On

On

2560-2688KB

300000-4FFFFFh

Off

Off

On

On

Off

3072KB

380000-57FFFFh

Off

Off

On

On

On

4608-4736KB

500000-6FFFFFh

Off

On

Off

On

Off

5120KB

580000-77FFFFh

Off

On

Off

On

On

6656-6784KB

700000-8FFFFFh

Off

On

On

On

Off

7168KB

780000-97FFFFh

Off

On

On

On

On

8704-8832KB

900000-AFFFFFh

On

Off

Off

On

Off

9216KB

980000-B7FFFFh

On

Off

Off

On

On

10752-10880KB

B00000-CFFFFFh

On

Off

On

On

Off

11264KB

B80000-D7FFFFh

On

On

On

On

On

12800-12928KB

D00000-EFFFFFh

On

On

Off

On

Off

13312KB

D80000-F7FFFFh

On

On

Off

On

On

14848-14976KB

F00000-FDFFFFh

On

On

On

On

Off

15360KB

F80000-FDFFFFh

On

On

On

On

On