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





486/MV

TRIGEM MICROSYSTEM, INC.

486/MV

Device Type

Mainboard

Processor

80486SX/80486DX/80486DX2

Processor Speed

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

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

40MB

Maximum Video Memory

1MB

Cache

64/128/256KB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

CN1

Floppy drive interface

CN5

Serial port

CN2

IDE interface

CN6

Serial port

CN3

Riser slot

SL1

PS/2 mouse port

CN4

32-bit VESA local bus slot

SL2

Note: CN1 CN6 are for general location purposes. The location may not be exact.

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

C1

Unidentified

Factory configured - do not alter

C2

Unidentified

Factory configured - do not alter

J2

Unidentified

Factory configured - do not alter

J8

Unidentified

Factory configured - do not alter

J9

Unidentified

CMOS memory normal operation

J10

Pins 2 & 3 closed

 

CMOS memory clear

J10

Pins 1 & 2 closed

Factory configured - do not alter

J11

Unidentified

Password enabled

SW1/4

Off

 

Password disabled

SW1/4

On

Monitor type select color

SW1/5

On

 

Monitor type select monochrome

SW1/5

Off

Cache disabled

SW1/6

Off

 

Cache enabled

SW1/6

On

SIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

4MB

None

None

None

8MB

4MB

(1) 1M x 36

None

None

12MB

4MB

(1) 1M x 36

(1) 1M x 36

None

16MB

4MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

4MB

(1) 4M x 36

None

None

24MB

4MB

(1) 1M x 36

(1) 4M x 36

None

36MB

4MB

(1) 4M x 36

(1) 4M x 36

None

40MB

4MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

Note: Bank 0 is factory installed and is not configurable.

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

Unidentified

128KB

(4) 32K x 8

None

Unidentified

256KB

(4) 32K x 8

(4) 32K x 8

Unidentified

CACHE JUMPER CONFIGURATION

Size

J4

J5

J6

J7

None

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

64KB

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

128KB

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

256KB

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 2 & 3 closed

VIDEO MEMORY CONFIGURATION

Note: Board accepts 512KB/1MB of video memory. The location and chip sizes are unidentified.

CPU SPEED SELECTION

Speed

SW1/1

SW1/2

SW1/3

25MHz

Off

Off

On

33MHz

On

On

Off

50iMHz

Off

Off

On

66iMHz

On

On

Off

CPU TYPE SELECTION

Type

J1

80486SX

Pins 2 & 3 closed

80486DX

Pins 1 & 2 closed

80486DX2

Pins 1 & 2 closed