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COBRA RS

ROBOTECH, INC.

COBRA RS

Processor

80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

256/512/1024KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3), green PC connector

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP2

Turbo switch

JP19

Green power supply

JP3

Green PC hardware switch

JP20

Keyboard connector

JP16

Turbo LED

JP21

Speaker

JP17

Reset switch

JP26

Green PC LED

JP18

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP1

pins 1 & 2 closed

 

CMOS memory clear

JP1

pins 2 & 3 closed

Monitor type select color

JP4

Closed

 

Monitor type select monochrome

JP4

Open

Flash BIOS voltage select 5v

JP5

pins 1 & 2 closed

 

Flash BIOS voltage select 12v

JP5

pins 2 & 3 closed

CPU type select Intel

JP15

pins 1 & 2 closed

 

CPU type select Cyrix

JP15

pins 2 & 3 closed

Factory configured - do not alter

JP24

Open

Factory configured - do not alter

JP25

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

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 8M x 9

(4) 8M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

1MB

(4) 128K x 8

(4) 128K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP11

JP12

256KB

pins 1 & 2 closed

pins 1 & 2 closed

512KB

pins 2 & 3 closed

pins 2 & 3 closed

1MB

pins 2 & 4 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JP8

JP9

JP10

80486SX

pins 2 & 3 closed

Open

Open

80487SX

pins 1 & 2, 3 & 4 closed

Open

Open

80486DX/DX2

pins 1 & 2, 3 & 4 closed

pins 2 & 3 closed

Open

Pentium Overdrive

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

Closed

CPU SPEED CONFIGURATION

Speed

JP13

JP14

JP27

JP28

25MHz

Closed

pins 1 & 2 closed

pins 2 & 4 closed

pins 2 & 3 closed

33MHz

Open

pins 1 & 2, 5 & 6 closed

pins 2 & 4 closed

pins 2 & 3 closed

40MHz

Open

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

pins 1 & 2 closed

50iMHz

Closed

pins 1 & 2 closed

pins 2 & 4 closed

pins 2 & 3 closed

50MHz

Open

pins 1 & 2, 3 & 4, 5 & 6 closed

pins 1 & 2 closed

pins 1 & 2 closed

66iMHz

Open

pins 1 & 2, 5 & 6 closed

pins 2 & 4 closed

pins 2 & 3 closed

BUS SPEED CONFIGURATION

CPU speed

JP22

<=33MHz

Open

>33MHz

Closed

VESA WAIT STATE CONFIGURATION

Wait states

JP23

0 wait states

Open

1 wait state

Closed