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ELEGANCE PENTIUM 90

NORTHGATE COMPUTER SYSTEMS, INC.

ELEGANCE PENTIUM 90

Processor

Pentium

Processor Speed

60/66/75/90/100MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

256/1024KB

BIOS

AMI/Phoenix

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2), 32-bit PCI bus slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J5

IDE interface

J26

Power LED & keylock

J6

Serial port 2

J27

Keyboard connector

J8

Turbo LED

JP33 (pins 1 - 2)

PS/2 mouse port

J9

IDE interface LED

JP33 (pins 3 - 4)

IDE interface

J22

32-bit PCI bus slots

PC1 - PC3

Serial port 1

J23

Reset switch

S1

Parallel port

J24

32-bit VESA local bus slots

SL1 & SL2

Floppy drive interface

J25

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP1

Open

Factory configured - do not alter

JP2

Open

Factory configured - do not alter

JP3

Open

Factory configured - do not alter

JP4

pins 2 & 3 closed

Factory configured - do not alter

JP6

Open

Factory configured - do not alter

JP8

Open

Factory configured - do not alter

JP10

pins 2 & 3 closed

Factory configured - do not alter

JP13

Open

CMOS memory normal operation

JP14

pins 1 & 2 closed

 

CMOS memory clear

JP14

pins 2 & 3 closed

Monitor type select color

JP15

Closed

 

Monitor type select monochrome

JP15

Open

Factory configured - do not alter

JP16

Open

I/O recovery delay delay enabled

JP19

Closed

 

I/O recovery delay delay disabled

JP19

Open

LDEV# timing select end of first T2

JP20

Open

 

LDEV# timing select end of second T2

JP20

Closed

Factory configured - do not alter

JP21

Open

Factory configured - do not alter

JP22

Open

Main board select SQ545

JP23

Closed

 

Main board select SQ503

JP23

Open

Factory configured - do not alter

JP26

Closed

Factory configured - do not alter

JP28

Open

Factory configured - do not alter

JP29

pins 1 & 2 closed

Factory configured - do not alter

JP30

Closed

Port 3F7 mode select VESA

JP31

pins 8 & 9 closed

 

Port 3F7 mode select ISA

JP31

pins 7 & 8 closed

IDE port address select primary

JP31

pins 10 & 11 closed

 

IDE port address select secondary

JP31

pins 11 & 12 closed

VESA IDE enabled

JP31

pins 19 & 20 closed

 

VESA IDE disabled

JP31

pins 20 & 21 closed

Parallel port IRQ select IRQ7

JP32

pins 1 & 2 closed

 

Parallel port IRQ select IRQ5

JP32

pins 2 & 3 closed

Flash EPROM select normal operation

W1

pins 1 & 2 closed

 

Flash EPROM select flash programming

W1

pins 2 & 3 closed

Note: The location of the following jumpers are unidentified: JP1, JP2, JP3, JP28, JP29, & JP30.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(2) 256K x 36

NONE

4MB

(2) 256K x 36

(2) 256K x 36

4MB

(2) 512K x 36

NONE

6MB

(2) 256K x 36

(2) 512K x 36

8MB

(2) 512K x 36

(2) 512K x 36

10MB

(2) 1M x 36

(2) 256K x 36

12MB

(2) 1M x 36

(2) 512K x 36

16MB

(2) 1M x 36

(2) 1M x 36

16MB

(2) 2M x 36

NONE

18MB

(2) 256K x 36

(2) 2M x 36

20MB

(2) 512K x 36

(2) 2M x 36

24MB

(2) 1M x 36

(2) 2M x 36

32MB

(2) 2M x 36

(2) 2M x 36

32MB

(2) 4M x 36

NONE

34MB

(2) 256K x 36

(2) 4M x 36

36MB

(2) 512K x 36

(2) 4M x 36

40MB

(2) 1M x 36

(2) 4M x 36

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 4M x 36

(2) 4M x 36

64MB

(2) 8M x 36

NONE

66MB

(2) 256K x 36

(2) 8M x 36

68MB

(2) 512K x 36

(2) 8M x 36

72MB

(2) 1M x 36

(2) 8M x 36

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

CACHE CONFIGURATION

Size

Bank 0

TAG

256KB

(8) 32K x 8

(1) 32K x 8

1MB

(8) 128K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP37

JP38

256KB

Open

Open

1MB

Closed

Closed

CPU SPEED CONFIGURATION

Speed

JP9

JP11

JP12

50MHz

Open

Closed

Closed

60MHz

Closed

Open

Closed

66MHz

Open

Closed

Open

75MHz

Open

Closed

Closed

90MHz

Closed

Open

Closed

100MHz

Open

Closed

Open

VESA CLOCK SPEED CONFIGURATION

Speed

JP31

33MHz

pins 2 & 3, 4 & 5 closed

 

25MHz

pins 1 & 2, 4 & 5 closed

 

40MHz

pins 1 & 2, 5 & 6 closed

 

50MHz

pins 2 & 3, 5 & 6 closed

VESA CYCLE TIME CONFIGURATION

Cycle time

JP31

> = 480ns

pins 14 & 15, 17 & 18 closed

 

> = 200ns

pins 13 & 14, 16 & 17 closed

 

> = 240ns

pins 14 & 15, 16 & 17 closed

 

> = 383ns

pins 13 & 14, 17 & 18 closed

BUS SPEED CONFIGURATION

CPU speed

JP25

<= 33MHz

Open

> 33MHz

Closed

BUS SPEED CONFIGURATION

Setting

JP17

JP18

LCLK/4

Open

Closed

 

LCLK/2

Open

Open

 

LCLK/3

Closed

Open

 

LCLK/5

Closed

Closed