Processor

Pentium

Processor Speed

60/66MHz

Chip Set

OPTI

Max. Onboard DRAM

128MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J9

Reset switch

S1

Power LED & keylock

J20

32-bit VESA local bus slot

V1

Speaker

JP18

32-bit VESA local bus slot

V2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

CMOS memory normal operation (Internal Battery)

JP1

pins 2 & 3 closed

CMOS memory normal operation (External Battery)

JP1

Open

CMOS memory clear

JP1

pins 1 & 2 closed

»

Monitor type select color

JP2

Closed

Monitor type select monochrome

JP2

Open

»

Memory data inactive at end of last T2

JP3

Open

Memory data inactive at beginning of last T2

JP3

Closed

»

I/O bus speed select 0 wait states

JP10

Closed

I/O bus speed select 1 wait state

JP10

Open

»

Local bus select 0 wait states

JP11

Closed

Local bus select 1 wait state

JP11

Open

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

8MB

(2) 1M x 36

NONE

10MB

(2) 256K x 36

(2) 1M x 36

12MB

(2) 512K x 36

(2) 1M 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

Bank 1

TAG (U30)

TAG (U31)

Dirty Bit (U52)

64KB

(8) 8K x 8

NONE

NONE

8K x 8

(1) 16K x 1

128KB

(8) 8K x 8

(8) 8K x 8

NONE

8K x 8

(1) 16K x 1

256KB

(8) 32K x 8

NONE

NONE

8K x 8

(1) 16K x 1

512KB

(8) 32K x 8

(8) 32K x 8

8K x 8

8K x 8

(1) 16K x 1

CACHE JUMPER CONFIGURATION

Size

JP6

JP19

JP20

JP21

JP22

JP23

64KB

pins 1 & 2

Open

Open

Open

pins 1 & 2

pins 1 & 2

128KB

pins 2 & 3

Closed

Open

Open

pins 2 & 3

pins 2 & 3

256KB

pins 1 & 2

Closed

Closed

Open

pins 1 & 2

pins 1 & 2

512KB

pins 2 & 3

Closed

Closed

Closed

pins 2 & 3

pins 2 & 3

Note: Pins designated should be in the closed position.

VESA MODE CONFIGURATION

Setting

JP12

Enabled

Closed

Disabled

Open

VESA ID0 & ID1 CONFIGURATION

Setting

JP13 (ID0)

JP14 (ID1)

80386

Open

Closed

80486

Closed

Open

VESA ID2 CONFIGURATION

VESA wait states

JP15 (ID2)

0 wait states

Open

1 wait state

Closed

VESA ID3 CONFIGURATION

Speed

JP16 (ID3)

£ 33MHz

Open

> 33MHz

Closed

VESA ID4 CONFIGURATION

Setting

JP17 (ID4)

Reserved for future use

Closed

SYSTEM CLOCK CONFIGURATION

LCLK

U28

JP4

JP5

JP7

Internal

Empty

Open

pins 2 & 3 closed

pins 2 & 3 closed

External

Installed

Closed

pins 1 & 2 closed

pins 1 & 2 closed

Note: When LCLK is derived internally, LCLK is 1/2 of the CPU clock (U38). When LCLK is derived from an external source (U28), LCLK is equal to the oscillator speed.

LCLK TO ATCLK DIVISION CONFIGURATION

LCLK Frequency

LCLK Divisor

ATLCK result

JP8

JP9

16 to 20 MHz

LCLK/2

8 to 10 MHz

Closed

Closed

20 to 25 MHz

LCLK/3

6.6 to 8.33 MHz

Open

Closed

33 MHz

LCLK/4

8.33 MHz

Closed

Open

40 to 50 MHz

LCLK/5

8 to 10 MHz

Open

Open