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LB486SLC

I-BUS

LB486SLC

Processor

CX486SLC

Processor Speed

33MHz

Chip Set

OPTI

Max. Onboard DRAM

16MB

Cache

128KB

BIOS

Unidentified

Dimensions

300mm x 89mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J3

Parallel port

J15

Reset switch

J4

Serial port 1

J16

PS/2 mouse port

J6

Serial port 2

J17

Auxiliary keyboard connector

J7

IDE interface LED

J18

Floppy drive interface

J13

VGA port

J22

IDE interface

J14

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

J1

Closed

Factory configured - do not alter

J2

Closed

Battery type select internal

J8

pins 2 & 3 closed

 

CMOS memory clear

J8

pins 1 & 2 closed

 

IDE IRQ14 enabled

J12

Closed

 

IDE IRQ14 disabled

J12

Open

 

VGA IRQ9 enabled

J23

Closed

 

VGA IRQ9 disabled

J23

Open

 

On board video disabled

J24

pins 1 & 2 closed

 

On board video enabled

J24

pins 2 & 3 closed

 

Password enabled

J25

Closed

 

Password disabled

J25

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

512KB

(2) 256K x 9

NONE

1MB

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

8MB

(2) 4M x 9

NONE

16MB

(2) 4M x 9

(2) 4M x 9

CACHE CONFIGURATION

Note: 128KB cache is factory installed and is not configurable.

PARALLEL PORT IRQ CONFIGURATION

IRQ

J21

IRQ3

pins 3 & 4 closed

IRQ4

pins 5 & 6 closed

IRQ5

pins 7 & 8 closed

IRQ7

pins 9 & 10 closed

IRQ12

pins 1 & 2 closed

SERIAL PORT 1 IRQ CONFIGURATION

IRQ

J20

IRQ3

pins 3 & 4 closed

IRQ4

pins 5 & 6 closed

IRQ5

pins 7 & 8 closed

IRQ7

pins 9 & 10 closed

IRQ12

pins 1 & 2 closed

SERIAL PORT 2 IRQ CONFIGURATION

IRQ

J19

IRQ3

pins 3 & 4 closed

IRQ4

pins 5 & 6 closed

IRQ5

pins 7 & 8 closed

IRQ7

pins 9 & 10 closed

IRQ12

pins 1 & 2 closed