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





VL-BUS MAINBOARD

UPDATE TECHNOLOGY, INC.

VL-BUS MAINBOARD

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2

Processor Speed

20/25/33/50(internal)/50/66(internal)MHz

Chip Set

UNI

Max. Onboard DRAM

32MB

SRAM Cache

32/64/128/256KB

BIOS

AMI

Dimensions

254mm x 218mm

I/O Options

32-bit VESA local-bus card slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J4

External battery

J8

Turbo LED

J5

Reset switch

J10

Speaker

J6

32-bit VESA local-bus cards (3)

S1 - S3

Power LED & keylock

J7

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Monitor type select color

J11

closed

 

Monitor type select monochrome

J11

open

CMOS memory normal operation (internal battery)

JP2

pins 1 & 2 closed

 

CMOS memory normal operation (external battery)

JP2

open

 

CMOS memory clear

JP2

pins 2 & 3 closed

VESA local bus speed select (CPU £ 33MHz)

JP19

closed

 

VESA local bus speed select (CPU > 33MHz)

JP19

open

VESA local bus wait states select 0 (CPU >33MHz)

JP20

closed

 

VESA local bus wait state select 1 (CPU £ 33MHz)

JP20

open

VESA local bus speed select CPU/1

JP43

pins 1 & 2 closed

 

VESA local bus speed select CPU/2

JP43

pins 2 & 3 closed

CPU speed select £ 33MHz

JP44

pins 2 & 3 closed

 

CPU speed select > 33MHz

JP44

pins 1 & 2 closed

CPU TYPE CONFIGURATION

CPU

J4

80486DX2

pins 1 & 2, 4 & 5, and 6 & 7 closed

ODP487SX

pins 2 & 3, 4 & 5, and 6 & 7 closed

80486DX

pins 1 & 2, 4 & 5, and 6 & 7 closed

80487SX

pins 5 & 6 closed

80486SX

pins 2 & 3, 4 & 5, and 6 & 7 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) 256K x 9

(4) 1M x 9

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

SRAM CONFIGURATION

Size

Cache

Location

TAG

32KB

(4) 8K x 8

Bank 0

(1) 8K x 8

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

128KB

(4) 32K x 8

Bank 0

(1) 32K x 8

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8

SRAM JUMPER CONFIGURATION

Size

J17

J18

J19

J20

32KB

open

open

open

pins 2 & 3 closed

64KB

open

closed

open

pins 1 & 2 closed

128KB

open

closed

closed

pins 1 & 2 and 3 & 4 closed

256KB

closed

closed

closed

pins 1 & 2 and 4 & 5 closed