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





MNC 1144 COMPLETE 486SBC (Rev. 2.10)

MNC INTERNATIONAL, INC.

MNC 1144 COMPLETE 486SBC (Rev. 2.10)

Processor

80486SX/80487SX/80486DX/8486DX2

Processor Speed

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

Chip Set

VSLI

Max. Onboard DRAM

32MB

Cache

None

BIOS

Phoenix

Dimensions

333mm x 107mm

I/O Options

Floppy drive interface, IDE interface, parallel port, serial port (2), VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

IDE interface LED

J1

Serial port 2

P4

Turbo LED

J5

Front panel switches

P5

IDE interface

P1

LCD screen

P6

Floppy drive interface

P2

VGA port

P7

Serial port 1

P3

Parallel port

P8

DRAM CONFIGURATION

Size

Bank 0

Bank 1

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

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

IDE interface enabled

J2

pins 2 & 3 closed

 

IDE interface disabled

J2

pins 1 & 2 closed

Floppy drive interface select normal operation

J3A

pins 2 & 3 closed

 

Floppy drive interface select encoded

J3A

pins 1 & 2 closed

Floppy drive interface enabled

J3B

pins 2 & 3 closed

 

Floppy drive interface disabled

J3B

pins 1 & 2 closed

J3 Jumper settings enabled

J3H

pins 2 & 3 closed

 

J3 Jumper settings disabled

J3H

pins 1 & 2 closed

 

Watchdog Timer interval select 1.2 second

J4

pins 1 & 2 closed

 

Watchdog Timer interval select 150ms

J4

pins 2 & 3 closed

 

Watchdog Timer interval select 600ms

J4

open

Watchdog Timer enabled

J4A

pins 1 & 2 closed

 

Watchdog Timer disabled

J4A

pins 2 & 3 closed

Monitor type select color

J7

closed

 

Monitor type select monochrome

J7

open

 

Paralell port select Uni-directional

J9

pins 2 & 3 closed

 

Paralell port select Bi-directional

J9

pins 1 & 2 closed

Bus cycle lock enabled

J14

closed

 

Bus cycle lock disabled

J14

open

Burst mode enabled

J17

closed

 

Burst mode disabled

J17

open

Secondary cache disabled

J18

open

 

Secondary cache enabled

J18

closed

VGA port interrupt request select none

J20

pins 1 & 2 closed

 

VGA port interrupt request select IR/FONT>

J20

pins 2 & 3 closed

Note:To disable Watchdog Timer (J4A) you must cut the trace between pins 1 & 2 on back of board.

SERIAL PORT CONFIGURATION

Serial port 1

Serial port 2

J3C

J3D

J3E

COM1

COM2

pins 2 & 3

pins 2 & 3

pins 2 & 3

COM1

Disabled

pins 2 & 3

pins 1 & 2

pins 2 & 3

COM2

Disabled

pins 1 & 2

pins 1 & 2

pins 2 & 3

COM2

COM1

pins 1 & 2

pins 2 & 3

pins 2 & 3

Disabled

COM1

pins 1 & 2

pins 2 & 3

pins 1 & 2

Disabled

COM2

pins 2 & 3

pins 2 & 3

pins 1 & 2

Disabled

Disabled

pins 1 & 2

pins 1 & 2

pins 1 & 2

Note:Pins designated should be in the closed position.

PARALLEL PORT CONFIGURATION

Function

J3F

J3G

Parallel port (P8) select LPT1 at 378h

pins 2 & 3 closed

pins 2 & 3 closed

 

Parallel port (P8) select LPT2 at 278h

pins 1 & 2 closed

pins 2 & 3 closed

 

Parallel port (P8) select LPT3 at 3BCh

pins 2 & 3 closed

pins 1 & 2 closed

 

Parallel port (P8) disabled

pins 1 & 2 closed

pins 1 & 2 closed

LCD DISPLAY TYPE CONFIGURATION

Type

J8

0

open

1

pins 1 & 2 closed

2

pins 3 & 4 closed

3

pins 1 & 2 and 3 & 4 closed

FLASH MEMORY ADDRESS CONFIGURATION

Address

J19

C0000 - C7FFF

open

C8000 - CFFFF

pins 3 & 4 closed

D0000 - D7FFF

pins 1 & 2 closed

D8000 - DFFFF

pins 1 & 2 and 3 & 4 closed

CPU TYPE CONFIGURATION

Type

J12

J13

80486DX2

pins 1 & 2 and 3 & 4 closed

pins 3 & 4 closed

80846DX

pins 1 & 2 and 3 & 4 closed

pins 3 & 4 closed

80487SX

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486SX

pins 2 & 3 closed

pins 2 & 3 closed