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





LAT-25/4M, LAT-16/4M, LAT-12/4M

ADVANCED COMPUTER TECHNOLOGY, LTD.

LAT-25/4M, LAT-16/4M, LAT-12/4M

Processor

80286

Processor Speed

12/16/25MHz

Chip Set

ACT

Max. Onboard DRAM

4MB

Cache

None

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

None

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

JP2

External battery

JP11

Power LED & Keylock

JP7

Speaker

JP14

Reset switch

JP10

Turbo switch

JP19

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

JP4

N/A

BIOS type select 27256

JP6

pins 1 & 2 closed

 

ROM type select 27512

JP6

pins 2 & 3 closed

Factory configured - do not alter

JP8

N/A

Monitor type select color

JP9

pins 2 & 3 closed

 

Monitor type select monochrome

JP9

pins 1 & 2 closed

Battery select internal

JP12

pins 2 & 3 closed

 

Battery select external

JP12

pins 1 & 2 closed

Power good signal detect from power supply

JP13

pins 1 & 2 closed

 

Power good signal detect from board

JP13

pins 2 & 3 closed

Factory configured - do not alter

JP15

N/A

Factory configured - do not alter

JP16

N/A

Bus speed select 8MHz

JP17

pins 1 & 2 closed

 

Bus speed select 6MHz

JP17

pins 2 & 3 closed

Factory configured - do not alter

JP18

N/A

Parity check enabled

JP20

pins 1 & 2 closed

 

Parity check disabled

JP20

pins 2 & 3 closed

Factory configured - do not alter

JP21

N/A

Factory configured - do not alter

JP22

N/A

RAM speed select 0 wait states

SW1/4

Off

 

RAM speed select 1 wait state

SW1/4

On

Note:SW1/4 must be on for the LAT-25/4M model.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

P-0

P-1

512KB

(4) 44256

NONE

NONE

NONE

(2) 41256

NONE

512KB

NONE

NONE

(2) 256K x 9

NONE

NONE

NONE

640KB

(4) 44256

(4) 4464

NONE

NONE

(2) 41256

(2) 4164

640KB

NONE

(4) 4464

(2) 256K x 9

NONE

NONE

(2) 4164

1MB

(4) 44256

(4) 44256

NONE

NONE

(2) 41256

(2) 41256

1MB

(4) 44256

NONE

NONE

(2) 256K x 9

(2) 41256

NONE

1MB

NONE

NONE

(2) 256K x 9

(2) 256K x 9

NONE

NONE

2MB

NONE

NONE

(2) 1MBx 9

NONE

NONE

NONE

4MB

NONE

NONE

(2) 1MBx 9

(2) 1MBx 9

NONE

NONE

DRAM SWITCH CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

512KB

On

On

On

640KB

On

Off

Off

1MB

On

Off

On

2MB

Off

On

On

4MB

Off

Off

On