486-PIO-3 (REV. A1) Motherboard Settings and Configuration

FIRST INTERNATIONAL COMPUTER, INC.

486-PIO-3 (REV. A1)

Processor
80486SX/UMCU5SD/CX486DX/80486DX/UMCU5S/UMCU5SLV/ CX486DX2/TI486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/
80486DX4ODP/CX486DX4/TI486DX4/AM486DX4/(SL)AM486DX4/ 80486DX4/AMK5/P24D/P24S/P24T/CX5X86
Processor Speed
25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/133(internal)MHz
Chip Set
VIA
Video Chip Set
None
Maximum Onboard Memory
64MB
Maximum Video Memory
None
Cache
128/256/512/1024KB
BIOS
Award
Dimensions
254mm x 218mm
I/O Options
32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), IR connector
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
BAT
Serial port 1
CN1
Chassis fan power
C1
Serial port 2
CN2
Green PC connector
C3
Parallel port
CN3
Outlet connector
C4
Floppy drive interface
CN4
Turbo/green PC LED
C5
IDE interface 2
CN5
IDE interface LED
C6
IDE interface 1
CN6
Reset switch
C7
IR connector
IR
Power LED & keylock
C8
32-bit PCI slots
PC1 - PC3
Speaker
C9

USER CONFIGURABLE SETTINGS
Function
Label
Position

Flash BIOS type select Intel 28F00BX-T1
J1
Pins 1 & 2 closed

Flash BIOS type select SST 29EE010
J1
Pins 2 & 3 closed
»
KB_LOCK mode select KB_LOCK
J2
Pins 2 & 3 closed

KB_LOCK mode select IOCHCK
J2
Pins 1 & 2 closed
»
Turbo LED used as turbo LED
J3
Open

Turbo LED used as green PC LED
J3
Closed
»
Password normal operation
JCP
Open

Password clear
JCP
Closed
»
Parallel port bidirectional
JI1
Open

Parallel port unidirectional
JI1
Closed

Jumper information unavailable
JP1
Unidentified

Jumper information unavailable
JP2
Unidentified

Monitor type select monochrome/EGA/VGA
VIDEO
Closed

Monitor type select CGA
VIDEO
Open

DRAM CONFIGURATION
Size
Bank 0
Bank 1
1MB
(1) 256K x 36
None
2MB
(1) 256K x 36
(1) 256K x 36
4MB
(1) 1M x 36
None
5MB
(1) 1M x 36
(1) 256K x 36
8MB
(1) 1M x 36
(1) 1M x 36
16MB
(1) 4M x 36
None
17MB
(1) 4M x 36
(1) 256K x 36
20MB
(1) 4M x 36
(1) 1M x 36
32MB
(1) 8M x 36
None
33MB
(1) 8M x 36
(1) 256K x 36
36MB
(1) 8M x 36
(1) 1M x 36
48MB
(1) 8M x 36
(1) 4M x 36
64MB
(1) 8M x 36
(1) 8M x 36

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
128KB
(4) 32K x 8
None
(1) 8K/32K x 8
256KB (A)
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8
256KB (B)
(4) 64K x 8
None
(1) 32K x 8
512KB (A)
(4) 128K x 8
None
(1) 32K x 8
512KB (B)
(4) 64K x 8
(4) 64K x 8
(1) 32K/64K x 8
1MB
(4) 128K x 8
(4) 128K x 8
(1) 64K/128K x 8

CACHE JUMPER CONFIGURATION
Size
JS1
JS2
JS3
JS4
JS5
JS6
128KB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
256KB (A)
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
1 & 2
256KB (B)
2 & 3
2 & 3
1 & 2
1 & 2
1 & 2
1 & 2
512KB (A)
2 & 3
2 & 3
2 & 3
1 & 2
2 & 3
1 & 2
512KB (B)
2 & 3
2 & 3
2 & 3
1 & 2
2 & 3
1 & 2
1MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed
JK1
JK2
JK3
JK4
25MHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
33MHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
40MHz
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
50iMHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
50MHz
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
66iMHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
75iMHz
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
80iMHz
Pins 1 & 2 closed
Pins 1 & 2 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
100iMHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed
133iMHz
Pins 2 & 3 closed
Pins 2 & 3 closed
Pins 1 & 2 closed
Pins 1 & 2 closed

CPU TYPE SELECTION
Type
JC1
JC2
JC3
JC4
JC5
80486SX
2 & 3
2 & 3
Open
Open
Open
UMC U5SD
1 & 2
1 & 2
Open
Open
Open
CX486DX
1 & 2
1 & 2
Open
Open
Open
80486DX
1 & 2
1 & 2
Open
2 & 3
Open
U5S
2 & 3
2 & 3
Open
Open
Open
U5SLV
2 & 3
2 & 3
Open
Open
Open
CX486DX2
1 & 2
1 & 2
Open
Open
Open
TI486DX2
1 & 2
1 & 2
Open
Open
Open
AM486DX2
1 & 2
1 & 2
Closed
Open
Open
(SL)AM486DX2
1 & 2
1 & 2
Open
2 & 3
Open
80486DX2
1 & 2
1 & 2
Open
2 & 3
Open
CX486DX4
1 & 2
1 & 2
Open
1 & 2
Open
TI486DX4
1 & 2
1 & 2
Open
Open
Open
AM486DX4
1 & 2
1 & 2
Open
Open
Open
(SL)AM486DX4
1 & 2
1 & 2
Open
1 & 2
Open
80486DX4ODP
1 & 2
1 & 2
Open
1 & 2
Open
80486DX4 (2x)
1 & 2
1 & 2
Open
2 & 3
Open
80486DX4 (3x)
1 & 2
1 & 2
Open
1 & 2
Open
AM X5
1 & 2
1 & 2
Open
2 & 3
Open
P24D
1 & 2
1 & 2
Open
1 & 2
Open
P24S
1 & 2
1 & 2
Open
2 & 3
Open
P24T
1 & 2
1 & 2
Open
1 & 2
Closed
CX5X86
1 & 2
1 & 2
Open
1 & 2
Open
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type
RNA
RNC
RNI
80486SX
Not installed
Not installed
Pins 1 - 8 closed
UMC U5SD
Installed
Not installed
Not installed
CX486DX
Not installed
Installed
Not installed
80486DX
Not installed
Not installed
Pins 1 - 8 closed
U5S
Installed
Not installed
Not installed
U5SLV
Installed
Not installed
Not installed
CX486DX2
Not installed
Installed
Not installed
TI486DX2
Not installed
Installed
Not installed
AM486DX2
Installed
Not installed
Not installed
(SL)AM486DX2
Not installed
Not installed
Pins 1 - 8 closed
80486DX2
Not installed
Not installed
Pins 1 - 8 closed
CX486DX4
Not installed
Not installed
Pins 1 - 8 closed
TI486DX4
Not installed
Installed
Not installed
AM486DX4
Installed
Not installed
Not installed
(SL)AM486DX4
Not installed
Not installed
Pins 1 - 8 closed
80486DX4ODP
Not installed
Not installed
Pins 1 - 8 closed
80486DX4 (2x)
Not installed
Not installed
Pins 1 - 8 closed
80486DX4 (3x)
Not installed
Not installed
Pins 1 - 8 closed
AM X5
Not installed
Not installed
Pins 1 - 8 closed
P24D
Not installed
Not installed
Pins 1 - 8 closed
P24S
Not installed
Not installed
Pins 1 - 8 closed
P24T
Not installed
Not installed
Pins 1 - 8 closed
CX5X86
Not installed
Not installed
Pins 1 - 8 closed

CPU VOLTAGE SELECTION
Voltage
C2
JPW1
JPW2
3.3v
Open
Pins 1 & 2 closed
Open
3.45v
Open
Pins 2 & 3 closed
Open
3.6v
Open
Open
Pins 1 & 2 closed
4v
Open
Open
Pins 2 & 3 closed
5v
Pins 1 & 2, 3 & 4 closed
N/A
N/A

PCI BUS SPEED SELECTION
CPU Clock
JCK
JT1
»
<= 33MHz (PCI clock = CPU clock)
Pins 1 & 2 closed
Pins 1 & 2 closed

>33 MHz (PCI clock = CPU clock/2)
Pins 2 & 3 closed
Pins 2 & 3 closed

DMA CHANNEL SELECTION
Channel
JW3
JW4
»
1
Pins 1 & 2 closed
Pins 1 & 2 closed

3
Pins 2 & 3 closed
Pins 2 & 3 closed

SERIAL PORT 2 SELECTION
Setting
JW1
JW2
Used as Serial port 2
Pins 1 & 2 closed
Pins 1 & 2 closed
Used as IR connector
Pins 2 & 3 closed
Pins 2 & 3 closed

Headaches Begone! A Systemic Approach To Healing Your Headaches

Don't Let Your Bike Seat Ruin Your Sex Life Book

486-PIO-3 (REV. A1) Motherboard Settings and Configuration

Search

My Books

Discover

Processor	80486SX/UMCU5SD/CX486DX/80486DX/UMCU5S/UMCU5SLV/ CX486DX2/TI486DX2/AM486DX2/(SL)AM486DX2/ 80486DX2/ 80486DX4ODP/CX486DX4/TI486DX4/AM486DX4/(SL)AM486DX4/ 80486DX4/AMK5/P24D/P24S/P24T/CX5X86
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/133(internal)MHz
Chip Set	VIA
Video Chip Set	None
Maximum Onboard Memory	64MB
Maximum Video Memory	None
Cache	128/256/512/1024KB
BIOS	Award
Dimensions	254mm x 218mm
I/O Options	32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), IR connector
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	BAT	Serial port 1	CN1
Chassis fan power	C1	Serial port 2	CN2
Green PC connector	C3	Parallel port	CN3
Outlet connector	C4	Floppy drive interface	CN4
Turbo/green PC LED	C5	IDE interface 2	CN5
IDE interface LED	C6	IDE interface 1	CN6
Reset switch	C7	IR connector	IR
Power LED & keylock	C8	32-bit PCI slots	PC1 - PC3
Speaker	C9

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Flash BIOS type select Intel 28F00BX-T1	J1	Pins 1 & 2 closed
	Flash BIOS type select SST 29EE010	J1	Pins 2 & 3 closed
»	KB_LOCK mode select KB_LOCK	J2	Pins 2 & 3 closed
	KB_LOCK mode select IOCHCK	J2	Pins 1 & 2 closed
»	Turbo LED used as turbo LED	J3	Open
	Turbo LED used as green PC LED	J3	Closed
»	Password normal operation	JCP	Open
	Password clear	JCP	Closed
»	Parallel port bidirectional	JI1	Open
	Parallel port unidirectional	JI1	Closed
	Jumper information unavailable	JP1	Unidentified
	Jumper information unavailable	JP2	Unidentified
	Monitor type select monochrome/EGA/VGA	VIDEO	Closed
	Monitor type select CGA	VIDEO	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(1) 256K x 36	None
2MB	(1) 256K x 36	(1) 256K x 36
4MB	(1) 1M x 36	None
5MB	(1) 1M x 36	(1) 256K x 36
8MB	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	None
17MB	(1) 4M x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 1M x 36
32MB	(1) 8M x 36	None
33MB	(1) 8M x 36	(1) 256K x 36
36MB	(1) 8M x 36	(1) 1M x 36
48MB	(1) 8M x 36	(1) 4M x 36
64MB	(1) 8M x 36	(1) 8M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	None	(1) 8K/32K x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB (B)	(4) 64K x 8	None	(1) 32K x 8
512KB (A)	(4) 128K x 8	None	(1) 32K x 8
512KB (B)	(4) 64K x 8	(4) 64K x 8	(1) 32K/64K x 8
1MB	(4) 128K x 8	(4) 128K x 8	(1) 64K/128K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3	JS4	JS5	JS6
128KB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
256KB (A)	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2
256KB (B)	2 & 3	2 & 3	1 & 2	1 & 2	1 & 2	1 & 2
512KB (A)	2 & 3	2 & 3	2 & 3	1 & 2	2 & 3	1 & 2
512KB (B)	2 & 3	2 & 3	2 & 3	1 & 2	2 & 3	1 & 2
1MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: Pins designated should be in the closed position.

CPU SPEED SELECTION
Speed	JK1	JK2	JK3	JK4
25MHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
33MHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
40MHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
50iMHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
50MHz	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
66iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
75iMHz	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
80iMHz	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
100iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
133iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU TYPE SELECTION
Type	JC1	JC2	JC3	JC4	JC5
80486SX	2 & 3	2 & 3	Open	Open	Open
UMC U5SD	1 & 2	1 & 2	Open	Open	Open
CX486DX	1 & 2	1 & 2	Open	Open	Open
80486DX	1 & 2	1 & 2	Open	2 & 3	Open
U5S	2 & 3	2 & 3	Open	Open	Open
U5SLV	2 & 3	2 & 3	Open	Open	Open
CX486DX2	1 & 2	1 & 2	Open	Open	Open
TI486DX2	1 & 2	1 & 2	Open	Open	Open
AM486DX2	1 & 2	1 & 2	Closed	Open	Open
(SL)AM486DX2	1 & 2	1 & 2	Open	2 & 3	Open
80486DX2	1 & 2	1 & 2	Open	2 & 3	Open
CX486DX4	1 & 2	1 & 2	Open	1 & 2	Open
TI486DX4	1 & 2	1 & 2	Open	Open	Open
AM486DX4	1 & 2	1 & 2	Open	Open	Open
(SL)AM486DX4	1 & 2	1 & 2	Open	1 & 2	Open
80486DX4ODP	1 & 2	1 & 2	Open	1 & 2	Open
80486DX4 (2x)	1 & 2	1 & 2	Open	2 & 3	Open
80486DX4 (3x)	1 & 2	1 & 2	Open	1 & 2	Open
AM X5	1 & 2	1 & 2	Open	2 & 3	Open
P24D	1 & 2	1 & 2	Open	1 & 2	Open
P24S	1 & 2	1 & 2	Open	2 & 3	Open
P24T	1 & 2	1 & 2	Open	1 & 2	Closed
CX5X86	1 & 2	1 & 2	Open	1 & 2	Open
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type	RNA	RNC	RNI
80486SX	Not installed	Not installed	Pins 1 - 8 closed
UMC U5SD	Installed	Not installed	Not installed
CX486DX	Not installed	Installed	Not installed
80486DX	Not installed	Not installed	Pins 1 - 8 closed
U5S	Installed	Not installed	Not installed
U5SLV	Installed	Not installed	Not installed
CX486DX2	Not installed	Installed	Not installed
TI486DX2	Not installed	Installed	Not installed
AM486DX2	Installed	Not installed	Not installed
(SL)AM486DX2	Not installed	Not installed	Pins 1 - 8 closed
80486DX2	Not installed	Not installed	Pins 1 - 8 closed
CX486DX4	Not installed	Not installed	Pins 1 - 8 closed
TI486DX4	Not installed	Installed	Not installed
AM486DX4	Installed	Not installed	Not installed
(SL)AM486DX4	Not installed	Not installed	Pins 1 - 8 closed
80486DX4ODP	Not installed	Not installed	Pins 1 - 8 closed
80486DX4 (2x)	Not installed	Not installed	Pins 1 - 8 closed
80486DX4 (3x)	Not installed	Not installed	Pins 1 - 8 closed
AM X5	Not installed	Not installed	Pins 1 - 8 closed
P24D	Not installed	Not installed	Pins 1 - 8 closed
P24S	Not installed	Not installed	Pins 1 - 8 closed
P24T	Not installed	Not installed	Pins 1 - 8 closed
CX5X86	Not installed	Not installed	Pins 1 - 8 closed

CPU VOLTAGE SELECTION
Voltage	C2	JPW1	JPW2
3.3v	Open	Pins 1 & 2 closed	Open
3.45v	Open	Pins 2 & 3 closed	Open
3.6v	Open	Open	Pins 1 & 2 closed
4v	Open	Open	Pins 2 & 3 closed
5v	Pins 1 & 2, 3 & 4 closed	N/A	N/A

PCI BUS SPEED SELECTION
CPU Clock		JCK	JT1
»	<= 33MHz (PCI clock = CPU clock)	Pins 1 & 2 closed	Pins 1 & 2 closed
	>33 MHz (PCI clock = CPU clock/2)	Pins 2 & 3 closed	Pins 2 & 3 closed

DMA CHANNEL SELECTION
Channel		JW3	JW4
»	1	Pins 1 & 2 closed	Pins 1 & 2 closed
	3	Pins 2 & 3 closed	Pins 2 & 3 closed

SERIAL PORT 2 SELECTION
Setting	JW1	JW2
Used as Serial port 2	Pins 1 & 2 closed	Pins 1 & 2 closed
Used as IR connector	Pins 2 & 3 closed	Pins 2 & 3 closed