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DT-LB134 (36-BIT SIMM VERSION)

DD & TT ENTERPRISE USA COMPANY

DT-LB134 (36-BIT SIMM VERSION)

Processor

80386DX/CX486DLC/80486SX/80486DX/80486DX2/ODP586SX

Processor Speed

20/25/33/40/50(internal)/50/66(internal)MHz

Chip Set

Symphony

Max. Onboard DRAM

64MB

SRAM Cache

64/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

PS/2 mouse, 32-bit VESA local bus slot

NPU Options

CX87DLC/80387DX

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

J1/pins 1 & 2

Speaker

J2B/pins 1 & 4

Turbo switch

J1/pins 3 & 4

Mouse port header

J11A

Reset switch

J1/pins 5 & 6

PS/2 mouse port

J11B

Power LED & keylock

J2A

32-bit VESA local bus

S1

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

Factory configured-do not alter

E2/pins 1 & 2

unknown

 

Factory configured-do not alter

E2/pins 3 & 4

unknown

Monitor type select color

E2/pins 5 & 6

closed

 

Monitor type select monochrome

E2/pins 5 & 6

open

 

ATCLK iOSC/2

E7/1-3, 4-6

closed

 

ATCLK iOSC/1

E7/3-5, 2-4

closed

Mouse port enabled

E12

closed

 

Mouse port disabled

E12

open

CMOS memory normal operation

E13

open

 

CMOS memory clear

E13

closed

Onboard speaker enabled

J2B/pins 1 & 2

closed

 

Onboard speaker disabled

J2B/pins 1 & 2

open

 

Burst mode 3-2-2-2

JP1

closed

 

Burst mode 2-1-1-1

JP1

open

 

Cache wait state select 0 wait states

JP2

closed

 

Cache wait state select 1 wait state

JP2

open

SRAM JUMPER CONFIGURATION

Jumper

64K

256K

E1A

pins 2 & 3 closed

pins 1 & 2 closed

E1B

pins 2 & 3 closed

pins 1 & 2 closed

E1C

open

closed

E1D

open

closed

E1E

open

closed

E1F

pins 1 & 2 closed

pins 1 & 2 closed

E1G

pins 1 & 2 closed

pins 1 & 2 closed

E1H

pins 1 & 2 closed

pins 1 & 2 closed

E1I

pins 1 & 2 closed

pins 1 & 2 closed

E1J

closed

closed

E1K

closed

closed

SRAM CONFIGURATION

Size

Cache

TAG

64KB

(8) 8K x 8

(1) 8K x 4

256KB

(8) 32K x 8

(1) 32K x 4

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank3

1MB

256K x 36

NONE

NONE

NONE

2MB

256K x 36

256K x 36

NONE

NONE

3MB

256K x 36

256K x 36

256K x 36

NONE

4MB

256K x 36

256K x 36

256K x 36

256K x 36

4MB

1MB x 36

NONE

NONE

NONE

5MB

1MB x 36

256K x 36

NONE

NONE

7MB

1MB x 36

256K x 36

256K x 36

256K x 36

8MB

1MB x 36

1MB x 36

NONE

NONE

9MB

1MB x 36

1MB x 36

256K x 36

NONE

10MB

1MB x 36

1MB x 36

256K x 36

256K x 36

12MB

1MB x 36

1MB x 36

1MB x 36

NONE

16MB

1MB x 36

1MB x 36

1MB x 36

1MB x 36

16MB

4MB x 36

NONE

NONE

NONE

17MB

4MB x 36

256K x 36

NONE

NONE

19MB

4MB x 36

256K x 36

256K x 36

256K x 36

20MB

4MB x 36

1MB x 36

NONE

NONE

28MB

4MB x 36

1MB x 36

1MB x 36

1MB x 36

32MB

4MB x 36

4MB x 36

NONE

NONE

34MB

4MB x 36

4MB x 36

256K x 36

256K x 36

40MB

4MB x 36

4MB x 36

1MB x 36

1MB x 36

64MB

4MB x 36

4MB x 36

4MB x 36

4MB x 36

CPU TYPE CONFIGURATION

Type

E3

E4

E5

E6

E7

E8

80386DX 33

open

3&4,9&10

1&3,4&6

3&4,9&11,10&12,

1&3,4&6

3&4

80386DX 40

open

3&4,7&8,9&10

1&3,4&6

3&4,9&11,10&12

1&3,4&6

5&6

CX486DLC 33

open

3&4,9&10

1&3,4&6

3&4,9&11,10&12

1&3,4&6

3&4

CX486DLC 40

open

3&4,7&8,9&10

1&3,4&6

3&4,9&11,10&12

1&3,4&6

5&6

80486SX 20

2&3

1&2,9&10

3&5,4&6

1&2,5&6,7&9,8&10

1&3,4&6

1&2

80486SX 25

2&3

1&2,9&10

3&5,4&6

1&2,5&6,7&9,8&10

1&3,4&6

3&4,5&6

80486SX 33

2&3

1&2,9&10

3&5,4&6

1&2,5&6,7&9,8&10

1&3,4&6

3&4

80486DX 33

1&2,3&4,5&6

1&2,9&10

3&5,4&6

1&2,5&6,7&9,8&10

1&3,4&6

3&4

80486DX2 50

1&2,3&4,5&6

1&2,9&10

3&5,4&6

1&2,5&6,7&9,8&10

1&3,4&6

3&4,5&6

80486DX 50

1&2,3&4,5&6

1&2,5&6,7&8,9&10

1&3,2&4

1&2,5&6,7&9,8&10

3&5,2&4

3&4,5&6

80486DX2 66

1&2,3&4,5&6

1&2,9&10

3&5,4&6

1&2,5&6,7&9,8&10

1&3,4&6

3&4

Notes: Pins indicated should be in the closed position.

Early versions of the board (model DT-LB133) do not support the 80486 series processor.