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





S1437

TYAN COMPUTER CORPORATION

S1437

Processor

80486SX/80487SX/80486DX

Processor Speed

20/25/33/50MHz

Chip Set

OPTI

Max. Onboard DRAM

256MB

Cache

64/128/256/512KB

BIOS

AMI/Phoenix

Dimensions

309mm x 331mm

I/O Options

None

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J4

Turbo LED

J6

Power LED & Keylock

J5

Reset switch

S9

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

External BCLK buffering 486DX (33/50MHz)

JP1

pins 1 & 2 closed

 

External BCLK buffering 486SX (20/25MHz) / 487SX

JP1

pins 2 & 3 closed

Snooping/Flush 20MHz CPU

JP8

closed

 

Snooping/Flush 25/33/40/50 MHz CPU

JP8

open

Monitor type select monochrome

JP9

open

 

Monitor type select color

JP9

closed

CPU speed select OSC/1

JP12

pins 1 & 2 closed

 

CPU speed select OSC/2

JP12

pins 2 & 3 closed

RTC/CMOS type select DS1287/1287A

JP13, JP14 & JP15

pins 1 & 2 closed

 

RTC/CMOS type select DS1387/1488

JP13, JP14 & JP15

pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

20MB

(4) 1M x 9

(4) 4M x 9

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

28MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

52MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

NONE

NONE

128MB

(4) 16M x 9

(4) 16M x 9

NONE

NONE

192MB

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

NONE

256MB

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

512KB

(4) 128K x 8

NONE

CACHE TAG CONFIGURATION

Size

U54

U55

U56

U71

U72 (Dirty bit)

64KB

(1) 64K x 1

(1) 8K x 1

NONE

(1) 64K x 1

(1) 16K x 1 or (1) 64K x 1

128KB

(1) 64K x 1

(1) 8K x 1

NONE

(1) 64K x 1

(1) 16K x 1 or (1) 64K x 1

256KB

(1) 64K x 1

(1) 8K x 1

(1) 8K x 1

(1) 64K x 1

(1) 16K x 1 or (1) 64K x 1

512KB

(1) 64K x 1

(1) 32K x 1

NONE

(1) 64K x 1

(1) 64K x 1

CACHE JUMPER CONFIGURATION

Size

JP2

JP3

JP4

JP5

JP16

JP17

JP18

64KB

2 & 3

Open

Open

Open

Open

Open

Open

128KB

1 & 2

Closed

Open

Open

Closed

Open

Open

256KB

2 & 3

Closed

Closed

Open

Closed

Open

Closed

512KB

1 & 2

Closed

Closed

Closed

Closed

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

J10

J11

80486SX

pins 2 & 3 closed

open

80487SX

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486DX

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

EBC SPEED CONFIGURATION

Size

JP6

JP7

20MHz

Open

Open

25MHz

Open

Open

33MHz

Open

Closed

40MHz

Closed

Open

50MHz

Closed

Closed