486MI REV. 2.2

ADVANCED INTEGRATION RESEARCH, INC.

486MI REV. 2.2

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium Overdrive

Processor Speed

8/10/12/16/20/25/33/40I/40/50(internal)/60/66(internal)/66MHz

Chip Set

SIS

Max. Onboard DRAM

64MB

Cache

64/128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3), floppy drive interfaces (2), green PC connector, IDE interface, parallel port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

CN1

Reset switch

J2

Serial port 2

CN2

Turbo switch

J3

Parallel port

CN3

Turbo LED

J4

IDE interface

CN4

Speaker

J5

Floppy drive interface 1

CN5

IDE interface LED

J6

Floppy drive interface 2

CN6

Power LED & keylock

J7

Green PC connector

J1

32-bit VESA local bus slots

SL1 - SL3

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Factory configured - do not alter

JP8

pins 1 & 2 closed

»

Factory configured - do not alter

JP9

pins 1 & 2 closed

»

Flash BIOS write protect enabled

JP17

pins 1 & 2 closed

Flash BIOS write protect disabled

JP17

pins 2 & 3 closed

»

CMOS memory normal operation

JP20

pins 1 & 2 closed

CMOS memory clear

JP20

pins 2 & 3 closed

»

VESA IDE interface enabled

JP22

pins 1 & 2 closed

VESA IDE interface disabled

JP22

pins 2 & 3 closed

»

Factory configured - do not alter

JP28

Open

»

Factory configured - do not alter

JP29

Open

»

Parallel port IRQ select IRQ7

JP30

pins 1 & 2 closed

Parallel port IRQ select IRQ5

JP30

pins 2 & 3 closed

»

System wake up IRQ select IRQ4 (COM1 & COM2)

JP31

pins 1 & 2 closed

System wake up IRQ select IRQ3 (COM2 & COM4)

JP31

pins 2 & 3 closed

»

Factory configured - do not alter

JP37

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

2MB

(1) 512K x 36

NONE

NONE

NONE

4MB

(1) 512K x 36

NONE

(1) 512K x 36

NONE

4MB

(1) 1M x 36

NONE

NONE

NONE

6MB

(1) 512K x 36

NONE

(1) 1M x 36

NONE

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

8MB

(1) 2M x 36

NONE

NONE

NONE

10MB

(1) 512K x 36

NONE

(1) 1M x 36

(1) 1M x 36

10MB

(1) 512K x 36

NONE

(1) 2M x 36

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

12MB

(1) 2M x 36

NONE

(1) 1M x 36

NONE

16MB

(1) 4M x 36

NONE

NONE

NONE

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

NONE

(1) 1M x 36

(1) 1M x 36

16MB

(1) 2M x 36

NONE

(1) 2M x 36

NONE

20MB

(1) 1M x 36

(1) 4M x 36

NONE

NONE

24MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

NONE

24MB

(1) 2M x 36

NONE

(1) 4M x 36

NONE

32MB

(1) 8M x 36

NONE

NONE

NONE

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

36MB

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

NONE

40MB

(1) 2M x 36

NONE

(1) 4M x 36

(1) 4M x 36

40MB

(1) 2M x 36

(1) 8M x 36

NONE

NONE

40MB

(1) 1M x 36

(1) 1M x 36

(1) 4M x 36

(1) 4M x 36

48MB

(1) 8M x 36

NONE

(1) 4M x 36

NONE

DRAM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

NONE

(1) 4M x 36

(1) 4M x 36

64MB

(1) 8M x 36

NONE

(1) 8M x 36

NONE

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

NONE

(1) 32K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

512KB

(4) 128K x 8

NONE

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP10

JP11

JP12

JP13

JP14

JP15

64KB

1 & 2

1 & 2

1 & 2

2 & 3

1 & 2

1 & 2

128KB

2 & 3

1 & 2

1 & 2

1 & 2

1 & 2

2 & 3

256KB

2 & 3

2 & 3

1 & 2

2 & 3

2 & 3

2 & 3

512KB

2 & 3

2 & 3

2 & 3

1 & 2

1 & 2

2 & 3

Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION

Type

JP1

JP2

JP38

80486SX

Open

pins 2 & 3 closed

pins 1 & 2 closed

80487SX

pins 2 & 3 closed

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

ODP486SX

pins 2 & 3 closed

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX/DX2

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

80486DX4

pins 1 & 2 closed

pins 1 & 2, 3 & 4 closed

Open

Pentium Overdrive

pins 2 & 3 closed

pins 1 & 2, 3 & 4 closed

pins 1 & 2 closed

CPU CLOCK CONFIGURATION (80486DX4 ONLY)

Speed

External clock speed

Internal clock speed

JP3

3x

25/33MHz

75/100MHz

Open

2.5x

33MHz

83MHz

pins 2 & 3 closed

2x

50MHz

100MHz

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP5

JP6

JP7

ID3

25MHz

Closed

Closed

Closed

pins 1 & 2 closed

33MHz

Closed

Closed

Open

pins 1 & 2 closed

40MHz

Closed

Open

Closed

pins 2 & 3 closed

50iMHz

Closed

Closed

Closed

pins 1 & 2 closed

50MHz

Closed

Open

Open

pins 2 & 3 closed

66iMHz

Closed

Closed

Open

pins 1 & 2 closed

CPU VOLTAGE CONFIGURATION

Voltage

W1

3.3v

pins 1 & 3, 2 & 4 closed

5v

pins 3 & 5, 4 & 6 closed

VESA WAIT STATE CONFIGURATION

Wait states

ID2

0 wait states

pins 1 & 2 closed

1 wait state

pins 2 & 3 closed

IDE SPEED CONFIGURATION

Speed

JP23

JP24

0

pins 1 & 2 closed

pins 1 & 2 closed

2

pins 2 & 3 closed

pins 1 & 2 closed

4

pins 1 & 2 closed

pins 2 & 3 closed

6

pins 2 & 3 closed

pins 2 & 3 closed

ECP MODE CONFIGURATION

Setting

Mode

JP25

JP26

JP27

Enabled

ECP mode disabled for parallel port

Open

Open

2 & 3

Disabled

ECP mode enabled (DMA 3 used)

1 & 2

1 & 2

1 & 2

Disabled

ECP mode enabled (DMA 1 used)

2 & 3

2 & 3

1 & 2

Note: If setting is enabled- 4 floppy drives are used. Pins designated should be in the closed position.

Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium Overdrive
Processor Speed	8/10/12/16/20/25/33/40I/40/50(internal)/60/66(internal)/66MHz
Chip Set	SIS
Max. Onboard DRAM	64MB
Cache	64/128/256/512KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (3), floppy drive interfaces (2), green PC connector, IDE interface, parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 1	CN1	Reset switch	J2
Serial port 2	CN2	Turbo switch	J3
Parallel port	CN3	Turbo LED	J4
IDE interface	CN4	Speaker	J5
Floppy drive interface 1	CN5	IDE interface LED	J6
Floppy drive interface 2	CN6	Power LED & keylock	J7
Green PC connector	J1	32-bit VESA local bus slots	SL1 - SL3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP8	pins 1 & 2 closed
»	Factory configured - do not alter	JP9	pins 1 & 2 closed
»	Flash BIOS write protect enabled	JP17	pins 1 & 2 closed
	Flash BIOS write protect disabled	JP17	pins 2 & 3 closed
»	CMOS memory normal operation	JP20	pins 1 & 2 closed
	CMOS memory clear	JP20	pins 2 & 3 closed
»	VESA IDE interface enabled	JP22	pins 1 & 2 closed
	VESA IDE interface disabled	JP22	pins 2 & 3 closed
»	Factory configured - do not alter	JP28	Open
»	Factory configured - do not alter	JP29	Open
»	Parallel port IRQ select IRQ7	JP30	pins 1 & 2 closed
	Parallel port IRQ select IRQ5	JP30	pins 2 & 3 closed
»	System wake up IRQ select IRQ4 (COM1 & COM2)	JP31	pins 1 & 2 closed
	System wake up IRQ select IRQ3 (COM2 & COM4)	JP31	pins 2 & 3 closed
»	Factory configured - do not alter	JP37	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
2MB	(1) 512K x 36	NONE	NONE	NONE
4MB	(1) 512K x 36	NONE	(1) 512K x 36	NONE
4MB	(1) 1M x 36	NONE	NONE	NONE
6MB	(1) 512K x 36	NONE	(1) 1M x 36	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
8MB	(1) 2M x 36	NONE	NONE	NONE
10MB	(1) 512K x 36	NONE	(1) 1M x 36	(1) 1M x 36
10MB	(1) 512K x 36	NONE	(1) 2M x 36	NONE
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
12MB	(1) 2M x 36	NONE	(1) 1M x 36	NONE
16MB	(1) 4M x 36	NONE	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	NONE	(1) 1M x 36	(1) 1M x 36
16MB	(1) 2M x 36	NONE	(1) 2M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	NONE
24MB	(1) 2M x 36	NONE	(1) 4M x 36	NONE
32MB	(1) 8M x 36	NONE	NONE	NONE
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	NONE
40MB	(1) 2M x 36	NONE	(1) 4M x 36	(1) 4M x 36
40MB	(1) 2M x 36	(1) 8M x 36	NONE	NONE
40MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
48MB	(1) 8M x 36	NONE	(1) 4M x 36	NONE

DRAM CONFIGURATION (CON'T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	NONE	(1) 4M x 36	(1) 4M x 36
64MB	(1) 8M x 36	NONE	(1) 8M x 36	NONE

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	NONE	(1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
512KB	(4) 128K x 8	NONE	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JP10	JP11	JP12	JP13	JP14	JP15
64KB	1 & 2	1 & 2	1 & 2	2 & 3	1 & 2	1 & 2
128KB	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2	2 & 3
256KB	2 & 3	2 & 3	1 & 2	2 & 3	2 & 3	2 & 3
512KB	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE CONFIGURATION
Type	JP1	JP2	JP38
80486SX	Open	pins 2 & 3 closed	pins 1 & 2 closed
80487SX	pins 2 & 3 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
ODP486SX	pins 2 & 3 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
80486DX/DX2	pins 1 & 2 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed
80486DX4	pins 1 & 2 closed	pins 1 & 2, 3 & 4 closed	Open
Pentium Overdrive	pins 2 & 3 closed	pins 1 & 2, 3 & 4 closed	pins 1 & 2 closed

CPU CLOCK CONFIGURATION (80486DX4 ONLY)
Speed	External clock speed	Internal clock speed	JP3
3x	25/33MHz	75/100MHz	Open
2.5x	33MHz	83MHz	pins 2 & 3 closed
2x	50MHz	100MHz	pins 1 & 2 closed

CPU SPEED CONFIGURATION
Speed	JP5	JP6	JP7	ID3
25MHz	Closed	Closed	Closed	pins 1 & 2 closed
33MHz	Closed	Closed	Open	pins 1 & 2 closed
40MHz	Closed	Open	Closed	pins 2 & 3 closed
50iMHz	Closed	Closed	Closed	pins 1 & 2 closed
50MHz	Closed	Open	Open	pins 2 & 3 closed
66iMHz	Closed	Closed	Open	pins 1 & 2 closed

CPU VOLTAGE CONFIGURATION
Voltage	W1
3.3v	pins 1 & 3, 2 & 4 closed
5v	pins 3 & 5, 4 & 6 closed

VESA WAIT STATE CONFIGURATION
Wait states	ID2
0 wait states	pins 1 & 2 closed
1 wait state	pins 2 & 3 closed

IDE SPEED CONFIGURATION
Speed	JP23	JP24
0	pins 1 & 2 closed	pins 1 & 2 closed
2	pins 2 & 3 closed	pins 1 & 2 closed
4	pins 1 & 2 closed	pins 2 & 3 closed
6	pins 2 & 3 closed	pins 2 & 3 closed

ECP MODE CONFIGURATION
Setting	Mode	JP25	JP26	JP27
Enabled	ECP mode disabled for parallel port	Open	Open	2 & 3
Disabled	ECP mode enabled (DMA 3 used)	1 & 2	1 & 2	1 & 2
Disabled	ECP mode enabled (DMA 1 used)	2 & 3	2 & 3	1 & 2
Note: If setting is enabled- 4 floppy drives are used. Pins designated should be in the closed position.