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Processor

80386DX/CX486DLC/80486SX/80486DX/ODP486SX/80486DX2

Processor Speed

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

Chip Set

UMC

Max. Onboard DRAM

32MB

SRAM Cache

32/64/128/256KB

BIOS

AMI/Phoenix

Dimensions

230mm x 218mm

I/O Options

32-bit proprietary local bus slot, 32-bit VESA local bus slot

NPU Options

80387DX/CX487DLC

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J1

Speaker

J29

Turbo LED

J25

Power LED & keylock

J30

Reset switch

J26

32-bit local bus slot

S1

Turbo switch

J28

32-bit VESA local bus slot

S2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

J6

pins 2 & 3 closed

Monitor type select monochrome

J6

pins 1 & 2 closed

Parity enabled

J9

pins 2 & 3 closed

Parity disabled

J9

pins 1 & 2 closed

Factory configured - do not alter

J21

Open

Factory configured - do not alter

J31

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

NONE

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

NONE

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

SRAM CONFIGURATION

Size

Cache

Location

TAG

32KB

(8) 8K x 8

Bank 0

(1) 8K x8

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8

SRAM JUMPER CONFIGURATION

Size

J7

J8

J11

J12

J13 & J19

J17

J18

32KB

Open

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

pins 1 & 2

64KB

Open

pins 1 & 2

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 2 & 3

128KB

pins 1 & 2

pins 2 & 3

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 2 & 3

256KB

pins 2 & 3

pins 1 & 2

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 2 & 3

Note: Pins designated should in the closed position.

VESA MODE CONFIGURATION

Mode

J22

J23

J24

Master

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

Slave

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

Note: VESA master mode can only be enabled when IC PAL 16R4 is installed.

CPU TYPE CONFIGURATION

CPU Type

J10

J14

J15

J16

J20

80386DX with NPU

pins 1 & 2

N/A

pins 1 & 2

N/A

N/A

80386DX w/o NPU

pins 1 & 2

N/A

pins 2 & 3

N/A

N/A

80486SX PQFP

pins 2 & 3

Open

pins 2 & 3

pins 2 & 3

Open

80486SX PGA

pins 2 & 3

Open

pins 2 & 3

pins 2 & 3

pins 2 & 3

80486SX

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

80486SX + 487SX OD

pins 2 & 3

pins 1 & 2

pins 2 & 3

pins 1 & 2, 3 & 4

pins 2 & 3

80486SX + 486DX PGA

pins 2 & 3

pins 1 & 2

pins 2 & 3

pins 1 & 2, 3 & 4

pins 2 & 3

80486DX

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 1 & 2, 3 & 4

pins 2 & 3

80486DX2

pins 2 & 3

pins 2 & 3

pins 2 & 3

pins 1 & 2, 3 & 4

pins 2 & 3

CPU SPEED CONFIGURATION

ICS2494 ( CPU Clock Generator)

Speed

J2

J3

J4

J5

25MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

33MHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

40MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

50iMHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

50MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

66iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

IMISC425 ( CPU Clock Generator)

Speed

J2

J3

J4

J5

25MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

33MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

40MHz

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

50iMHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

50MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

66iMHz

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed