HwMuseum | Index

ZYTEX COMPUTERS, INC.

TB486

Processor

80486DX

Processor Speed

33MHz

Chip Set

ETEQ

Max. Onboard DRAM

32MB

Cache

64/256KB

BIOS

AMI/MR

Dimensions

330.2mm x 218.4mm

I/O OPTIONS

32-bit external memory card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

Reset switch

J4

Power LED & Keylock

JP26

External battery

JP2

Speaker

JP27

32-bit external memory card

JP5

Turbo LED

T1

Turbo switch

JP25

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor type select monochrome

J4

Open

 

Monitor type select color

J4

Closed

»

Filter circuitry disabled

JP3

Closed

 

Filter circuitry enabled

JP3

Open

»

NPU read speed select 3 wait states

JP24

Open

 

NPU read speed select 2 wait states

JP24

Closed

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) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

CACHE CONFIGURATION

Size

Bank 0

TAG

64KB

(8) 8K x 8

(2) 8K x 8

256KB

(8) 32K x 8

(2) 8K x 8

CACHE JUMPER CONFIGURATION

Size

JP19

JP20

JP21

JP22

JP23

64KB

pins 2 & 3 closed

pins 2 & 3 closed

Open

Open

Open

256KB

pins 1 & 2 closed

pins 1 & 2 closed

Closed

Closed

Closed