...because we can't all be on the bleeding edge...





ZEN 3486

ZENY COMPUTERS

ZEN 3486

Processor

80386DX/80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

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

Chip Set

UMC

Max. Onboard DRAM

48MB

SRAM Cache

64/128KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80387/3167

CONNECTIONS

Function

Location

Function

Location

Speaker

J2

Turbo LED

J5

External Battery

J3

Reset switch

J6

Power LED & keylock

J4

Turbo Switch

W22

USER CONFIGURABLE SETTINGS

Function

Location

Setting

Battery select internal

J1

Closed

 

Battery select external

J1

Open

Factory configured - do not alter

W3

Open

Factory configured - do not alter

W4

Open

NPU Select 3187 or none

W15 & W20

Open

 

NPU Select 80387

W15 & W20

Closed

Factory configured do not alter

W16

Open

NPU synchronous with CPU

W19

W21

Open

pins 1 & 2 closed

 

NPU sysnchronous with oscillator installed at Y1

W19

W21

Closed

pins 2 & 3 closed

Factory configured - do not alter

W23

Open

Factory configured - do not alter

W27

Open

Factory configured - do not alter

W28

Open

CMOS memory normal operation

W29

pins 1 & 2 closed

 

CMOS memory clear

W29

pins 2 & 3 closed

Note: W27 & W28 may not be present on later revisions

CPU CONFIGURATION

Type

CPU Speed

OSC

W14

W24

W25

W26

80386DX

33MHz

66MHz

Open

Open

N/A

N/A

80386DX

40MHz

80MHz

Open

Open

N/A

N/A

80486SX

20MHz

20MHz

Closed

Open

pins 2 & 3

Open

80486SX

20MHz

40MHz

Closed

Open

pins 2 & 3

Open

80486SX

25MHz

25MHz

Closed

Open

pins 2 & 3

Open

80486SX

25MHz

50MHz

Closed

Closed

pins 2 & 3

Open

80487SX

25MHz

25MHz

Closed

Open

pins 1 & 2 and 3 & 4

pins 2 & 3

80486DX

33MHz

33MHz

Closed

Open

pins 1 & 2 and 3 & 4

pins 1 & 2

80486DX

33MHz

66MHz

Closed

Closed

pins 1 & 2 and 3 & 4

pins 1 & 2

80486DX

50MHz

50MHz

Closed

Open

pins 1 & 2 and 3 & 4

pins 1 & 2

ODP486SX

50iMHz

25MHz

Closed

Open

pins 1 & 2 and 3 & 4

pins 2 & 3

80486DX2

50iMHz

25MHz

Closed

Open

pins 1 & 2 and 3 & 4

pins 1 & 2

80486DX2

50iMHz

50MHz

Closed

Closed

pins 1 & 2 and 3 & 4

pins 1 & 2

Note:pins designated should be in the closed position.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

W5

W6

1MB

(4) 256K x 9

None

None

pins 1 & 2

pins 1 & 2

2MB

(4) 256K x 9

(4) 256K x 9

None

pins 1 & 2

pins 1 & 2

3MB

(4) 256K x 9

(4) 256K x 9

(1) 256K x 36

pins 2 & 3

pins 2 & 3

4MB

(4) 1M x 9

None

None

pins 1 & 2

pins 1 & 2

5MB

(4) 256K x 9

(4) 1M x 9

None

pins 1 & 2

pins 1 & 2

6MB

(4) 256K x 9

(4) 256K x 9

(1) 1M x 36

pins 2 & 3

pins 2 & 3

8MB

(4) 1M x 9

(4) 1M x 9

None

pins 1 & 2

pins 1 & 2

9MB

(4) 1M x 9

(4) 1M x 9

(1) 256K x 36

pins 2 & 3

pins 2 & 3

10MB

(4) 256K x 9

(4) 256K x 9

(1) 2M x 36

pins 2 & 3

pins 2 & 3

12MB

(4) 1M x 9

(4) 1M x 9

(1) 1M x 36

pins 2 & 3

pins 2 & 3

16MB

(4) 1M x 9

(4) 1M x 9

(1) 2M x 36

pins 2 & 3

pins 2 & 3

16MB

(4) 4M x 9

None

None

pins 1 & 2

pins 1 & 2

17MB

(4) 256K x 9

(4) 4M x 9

None

pins 1 & 2

pins 1 & 2

18MB

(4) 256K x 9

(4) 256K x 9

(1) 4M x 36

pins 2 & 3

pins 2 & 3

20MB

4) 1M x 9

(4) 4M x 9

None

pins 1 & 2

pins 1 & 2

24MB

(4) 1M x 9

(4) 1M x 9

(1) 4M x 36

pins 2 & 3

pins 2 & 3

32MB

(4) 4M x 9

(4) 4M x 9

None

pins 1 & 2

pins 1 & 2

33MB

(4) 4M x 9

(4) 4M x 9

(1) 256K x 36

pins 2 & 3

pins 2 & 3

36MB

(4) 4M x 9

(4) 4M x 9

(1) 1M x 36

pins 2 & 3

pins 2 & 3

40MB

(4) 4M x 9

(4) 4M x 9

(1) 2M x 36

pins 2 & 3

pins 2 & 3

48MB

(4) 4M x 9

(4) 4M x 9

(1) 4M x 36

pins 2 & 3

pins 2 & 3

Note: pins designated should be in the closed position.

SRAM JUMPER CONFIGURATION

Jumper

32KB

64KB

128KB

256KB

W1

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

W2

Open

Open

pins 1 & 2 closed

pins 2 & 3 closed

W7

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

W8

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

W9

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

pins 2 & 3 closed

W10

Open

Closed

Closed

Closed

W11

Open

Closed

Closed

Closed

W12

Open

Open

Open

Closed

W13

Open

Open

Closed

Closed

W17

Open

Open

Open

Closed

W18

Open

Open

Closed

Closed

Cacheable Region

8MB

16MB

32MB

64MB

Note: W10 may not be present on later revisions