486-GVT (REV. A2) Motherboard Settings and Configuration

FIRST INTERNATIONAL COMPUTER, INC.

486-GVT (REV. A2)

Processor
CX486S/80486SX/CX486DX/CX487S/80486DX/80486DX2/Pentium Overdrive
Processor Speed
25/33/50(internal)/50/66(internal)/66MHz
Chip Set
VIA
Max. Onboard DRAM
96MB
Cache
64/128/256KB
BIOS
AMI/Award
Dimensions
259mm x 218mm
I/O Options
32-bit VESA local bus slots (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J1
Speaker
J12
Turbo LED
J9
Power LED & keylock
J13
Turbo switch
J10
32-bit VESA Local bus slot
SL1
Reset switch
J11
32-bit VESA Local bus slot
SL2

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Battery select - internal
J2
pins 2 & 3 closed

Battery select - external
J2
pins 1 & 2 closed
»
Monitor type select monochrome/EGA/VGA
J4
Open

Monitor type select color
J4
Closed
»
Password clear - AMI
J7
pins 2 & 3 closed

Password clear - Award
J7
pins 1 & 2 closed
»
Factory configured - do not alter
J8
pins 1 & 2 closed
»
80486SX/P23S/P4S/CX486S PQFP disabled
JC6
Open

80486SX/P23S/P4S/CX486S PQFP enabled
JC6
Closed
»
CPU 2X clock mode
JX1
pins 2 & 3 closed

CPU 1X clock mode
JX1
pins 1 & 2 closed
»
Factory configured - do not alter
JX2
pins 2 & 3 closed
»
Keyboard select - external
JKB1-4, JX3
pins 1 & 2 closed

Keyboard select - internal
JKB1-4, JX3
pins 2 & 3 closed
»
Intel S-series CPU
JCX1
Open

CX486S
JCX1
Closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
1MB
(4) 256K x 9
NONE
NONE
1MB
NONE
(1) 256KB x 36
NONE
1MB
NONE
NONE
(1) 256KB x 36
2MB
(4) 256K x 9
(1) 256KB x 36
NONE
2MB
NONE
(1) 256KB x 36
(1) 256KB x 36
2MB
(4) 256K x 9
NONE
(1) 256KB x 36
3MB
(4) 256K x 9
(1) 256KB x 36
(1) 256KB x 36
4MB
(4) 1M x 9
NONE
NONE
4MB
NONE
(1) 1M x 36
NONE
4MB
NONE
NONE
(1) 1M x 36
5MB
(4) 256K x 9
(1) 1M x 36
NONE
5MB
(4) 256K x 9
NONE
(1) 1M x 36
5MB
(4) 1M x 9
(1) 256KB x 36
NONE
5MB
(4) 1M x 9
NONE
(1) 256KB x 36
5MB
NONE
(1) 256KB x 36
(1) 1M x 36
5MB
NONE
(1) 1M x 36
(1) 256KB x 36
6MB
(4) 256K x 9
(1) 1M x 36
(1) 256KB x 36
6MB
(4) 256K x 9
(1) 256KB x 36
(1) 1M x 36
6MB
(4) 1M x 9
(1) 256KB x 36
(1) 256KB x 36
8MB
(4) 1M x 9
(1) 1M x 36
NONE
8MB
(4) 1M x 9
NONE
(1) 1M x 36
8MB
NONE
(1) 1M x 36
(1) 1M x 36
9MB
(4) 256K x 9
(1) 1M x 36
(1) 1M x 36
9MB
(4) 1M x 9
(1) 256KB x 36
(1) 1M x 36
9MB
(4) 1M x 9
(1) 1M x 36
(1) 256KB x 36

DRAM CONFIGURATION
12MB
(4) 1M x 9
(1) 1M x 36
(1) 256KB x 36
16MB
(4) 4M x 9
NONE
NONE
16MB
NONE
(1) 4M x 36
NONE
16MB
NONE
NONE
(1) 4M x 36
17MB
(4) 256K x 9
(1) 4M x 36
NONE
17MB
(4) 256K x 9
NONE
(1) 4M x 36
17MB
NONE
(1) 256KB x 36
(1) 4M x 36
17MB
NONE
(1) 4M x 36
(1) 256KB x 36
17MB
(4) 4M x 9
(1) 256KB x 36
NONE
17MB
(4) 4M x 9
NONE
(1) 256KB x 36
18MB
(4) 256K x 9
(1) 256KB x 36
(1) 4M x 36
18MB
(4) 256K x 9
(1) 4M x 36
(1) 256KB x 36
18MB
(4) 4M x 9
(1) 256KB x 36
(1) 256KB x 36
20MB
(4) 1M x 9
(1) 4M x 36
NONE
20MB
(4) 1M x 9
NONE
(1) 4M x 36
20MB
(4) 4M x 9
(1) 1M x 36
NONE
20MB
(4) 4M x 9
NONE
(1) 1M x 36
20MB
NONE
(1) 1M x 36
(1) 4M x 36
20MB
NONE
(1) 4M x 36
(1) 1M x 36
21MB
(4) 256K x 9
(1) 1M x 36
(1) 4M x 36
21MB
(4) 256K x 9
(1) 4M x 36
(1) 1M x 36
21MB
(4) 1M x 9
(1) 256KB x 36
(1) 4M x 36
21MB
(4) 1M x 9
(1) 4M x 36
(1) 256KB x 36
21MB
(4) 4M x 9
(1) 256KB x 36
(1) 1M x 36
21MB
(4) 4M x 9
(1) 1M x 36
(1) 256KB x 36
24MB
(4) 1M x 9
(1) 1M x 36
(1) 4M x 36
24MB
(4) 1M x 9
(1) 4M x 36
(1) 1M x 36
24MB
(4) 4M x 9
(1) 1M x 36
(1) 1M x 36
32MB
(4) 4M x 9
(1) 4M x 36
NONE
32MB
(4) 4M x 9
NONE
(1) 4M x 36
32MB
NONE
(1) 4M x 36
(1) 4M x 36
33MB
(4) 256K x 9
(1) 4M x 36
(1) 4M x 36
33MB
(4) 4M x 9
(1) 256KB x 36
(1) 4M x 36
33MB
(4) 4M x 9
(1) 4M x 36
(1) 256KB x 36
36MB
(4) 1M x 9
(1) 4M x 36
(1) 4M x 36
36MB
(4) 4M x 9
(1) 1M x 36
(1) 4M x 36
36MB
(4) 4M x 9
(1) 4M x 36
(1) 1M x 36
48MB
(4) 4M x 9
(1) 4M x 36
(1) 4M x 36
64MB
(4) 16M x 9
NONE
NONE
65MB
(4) 16M x 9
(1) 256KB x 36
NONE
65MB
(4) 16M x 9
NONE
(1) 256KB x 36
66MB
(4) 16M x 9
(1) 256KB x 36
(1) 256KB x 36
68MB
(4) 16M x 9
(1) 1M x 36
NONE
68MB
(4) 16M x 9
NONE
(1) 1M x 36
69MB
(4) 16M x 9
(1) 256KB x 36
(1) 1M x 36

DRAM CONFIGURATION
69MB
(4) 16M x 9
(1) 1M x 36
(1) 256KB x 36
72MB
(4) 16M x 9
(1) 1M x 36
(1) 1M x 36
48MB
(4) 4M x 9
(1) 4M x 36
(1) 4M x 36
64MB
(4) 16M x 9
NONE
NONE
65MB
(4) 16M x 9
(1) 256KB x 36
NONE
65MB
(4) 16M x 9
NONE
(1) 256KB x 36
66MB
(4) 16M x 9
(1) 256KB x 36
(1) 256KB x 36
68MB
(4) 16M x 9
(1) 1M x 36
NONE
68MB
(4) 16M x 9
NONE
(1) 1M x 36
69MB
(4) 16M x 9
(1) 256KB x 36
(1) 1M x 36
69MB
(4) 16M x 9
(1) 1M x 36
(1) 256KB x 36
72MB
(4) 16M x 9
(1) 1M x 36
(1) 1M x 36
80MB
(4) 16M x 9
(1) 4M x 36
NONE
80MB
(4) 16M x 9
NONE
(1) 4M x 36
81MB
(4) 16M x 9
(1) 256KB x 36
(1) 256KB x 36
81MB
(4) 16M x 9
(1) 256KB x 36
(1) 4M x 36
81MB
(4) 16M x 9
(1) 4M x 36
(1) 256KB x 36
84MB
(4) 16M x 9
(1) 1M x 36
(1) 4M x 36
84MB
(4) 16M x 9
(1) 4M x 36
(1) 1M x 36
96MB
(4) 16M x 9
(1) 4M x 36
(1) 4M x 36

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) 8K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size
JS1
JS2
JS3
64KB
pins 1 & 2 closed
pins 1 & 2 closed
pins 1 & 2 closed
128KB
pins 1 & 2 closed
pins 2 & 3 closed
pins 2 & 3 closed
256KB
pins 2 & 3 closed
pins 2 & 3 closed
pins 1 & 2 closed

CPU TYPE CONFIGURATION
CPU Type
RN9
RN10
RN11
CX486S/CX486DX (PGA)
Installed
Not installed
Not installed
CX486S(PQFP)
Not installed
Not installed
Installed
CX487S
Installed
Not installed
Not installed
486SX/DX/DX2
Not installed
Not installed
Not installed
486 SL-Enhanced (PGA)
Not installed
Installed
Not installed
486 SL-Enhanced (PQFP)
Not installed
Not installed
Installed

CPU TYPE CONFIGURATION
CPU Type
JC1
JC2
JC3
JC4
JC5
486SX/486 SL Enhanced
2 & 3
2 & 3
Open
Open
Closed
CX486S
2 & 3
2 & 3
Closed
Open
Open
CX487S
1 & 2
1 & 2
Closed
Open
Open
CX486DX
1 & 2
1 & 2
Closed
Open
Open
80486DX/DX2
1 & 2
1 & 2
Closed
Open
Closed
486 SL-Enhanced
1 & 2
1 & 2
Closed
Open
Closed
Pentium Overdrive
1 & 2
1 & 2
Open
Closed
Open
Note: pins designated should be in the closed position.

CPU SPEED SELECT - JK1
Speed
Pins 1 & 2
Pins3 & 4
Pins 5 & 6
Pins 7 & 8
25MHz
Open
Open
Closed
Open
33MHz
Closed
Open
Open
Open
40MHz
Closed
Closed
Open
Open
40iMHz
Closed
Open
Closed
Closed
50MHz
Open
Open
Closed
Closed
50iMHz
Open
Closed
Open
Open
66MHz
Open
Closed
Open
Closed
66iMHz
Closed
Open
Open
Closed
80MHz
Closed
Closed
Open
Closed

VESA WAIT STATE/BUS SPEED CONFIGURATION
CPU speed
Wait states
JV1
JV2
< 33MHz
0 wait states
pins 2 & 3 closed
pins 2 & 3 closed
> 33MHz
1 wait state
pins 1 & 2 closed
pins 1 & 2 closed

Headaches Begone! A Systemic Approach To Healing Your Headaches

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

486-GVT (REV. A2) Motherboard Settings and Configuration

Search

My Books

Discover

Processor	CX486S/80486SX/CX486DX/CX487S/80486DX/80486DX2/Pentium Overdrive
Processor Speed	25/33/50(internal)/50/66(internal)/66MHz
Chip Set	VIA
Max. Onboard DRAM	96MB
Cache	64/128/256KB
BIOS	AMI/Award
Dimensions	259mm x 218mm
I/O Options	32-bit VESA local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Speaker	J12
Turbo LED	J9	Power LED & keylock	J13
Turbo switch	J10	32-bit VESA Local bus slot	SL1
Reset switch	J11	32-bit VESA Local bus slot	SL2

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Battery select - internal	J2	pins 2 & 3 closed
	Battery select - external	J2	pins 1 & 2 closed
»	Monitor type select monochrome/EGA/VGA	J4	Open
	Monitor type select color	J4	Closed
»	Password clear - AMI	J7	pins 2 & 3 closed
	Password clear - Award	J7	pins 1 & 2 closed
»	Factory configured - do not alter	J8	pins 1 & 2 closed
»	80486SX/P23S/P4S/CX486S PQFP disabled	JC6	Open
	80486SX/P23S/P4S/CX486S PQFP enabled	JC6	Closed
»	CPU 2X clock mode	JX1	pins 2 & 3 closed
	CPU 1X clock mode	JX1	pins 1 & 2 closed
»	Factory configured - do not alter	JX2	pins 2 & 3 closed
»	Keyboard select - external	JKB1-4, JX3	pins 1 & 2 closed
	Keyboard select - internal	JKB1-4, JX3	pins 2 & 3 closed
»	Intel S-series CPU	JCX1	Open
	CX486S	JCX1	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
1MB	(4) 256K x 9	NONE	NONE
1MB	NONE	(1) 256KB x 36	NONE
1MB	NONE	NONE	(1) 256KB x 36
2MB	(4) 256K x 9	(1) 256KB x 36	NONE
2MB	NONE	(1) 256KB x 36	(1) 256KB x 36
2MB	(4) 256K x 9	NONE	(1) 256KB x 36
3MB	(4) 256K x 9	(1) 256KB x 36	(1) 256KB x 36
4MB	(4) 1M x 9	NONE	NONE
4MB	NONE	(1) 1M x 36	NONE
4MB	NONE	NONE	(1) 1M x 36
5MB	(4) 256K x 9	(1) 1M x 36	NONE
5MB	(4) 256K x 9	NONE	(1) 1M x 36
5MB	(4) 1M x 9	(1) 256KB x 36	NONE
5MB	(4) 1M x 9	NONE	(1) 256KB x 36
5MB	NONE	(1) 256KB x 36	(1) 1M x 36
5MB	NONE	(1) 1M x 36	(1) 256KB x 36
6MB	(4) 256K x 9	(1) 1M x 36	(1) 256KB x 36
6MB	(4) 256K x 9	(1) 256KB x 36	(1) 1M x 36
6MB	(4) 1M x 9	(1) 256KB x 36	(1) 256KB x 36
8MB	(4) 1M x 9	(1) 1M x 36	NONE
8MB	(4) 1M x 9	NONE	(1) 1M x 36
8MB	NONE	(1) 1M x 36	(1) 1M x 36
9MB	(4) 256K x 9	(1) 1M x 36	(1) 1M x 36
9MB	(4) 1M x 9	(1) 256KB x 36	(1) 1M x 36
9MB	(4) 1M x 9	(1) 1M x 36	(1) 256KB x 36

DRAM CONFIGURATION
12MB	(4) 1M x 9	(1) 1M x 36	(1) 256KB x 36
16MB	(4) 4M x 9	NONE	NONE
16MB	NONE	(1) 4M x 36	NONE
16MB	NONE	NONE	(1) 4M x 36
17MB	(4) 256K x 9	(1) 4M x 36	NONE
17MB	(4) 256K x 9	NONE	(1) 4M x 36
17MB	NONE	(1) 256KB x 36	(1) 4M x 36
17MB	NONE	(1) 4M x 36	(1) 256KB x 36
17MB	(4) 4M x 9	(1) 256KB x 36	NONE
17MB	(4) 4M x 9	NONE	(1) 256KB x 36
18MB	(4) 256K x 9	(1) 256KB x 36	(1) 4M x 36
18MB	(4) 256K x 9	(1) 4M x 36	(1) 256KB x 36
18MB	(4) 4M x 9	(1) 256KB x 36	(1) 256KB x 36
20MB	(4) 1M x 9	(1) 4M x 36	NONE
20MB	(4) 1M x 9	NONE	(1) 4M x 36
20MB	(4) 4M x 9	(1) 1M x 36	NONE
20MB	(4) 4M x 9	NONE	(1) 1M x 36
20MB	NONE	(1) 1M x 36	(1) 4M x 36
20MB	NONE	(1) 4M x 36	(1) 1M x 36
21MB	(4) 256K x 9	(1) 1M x 36	(1) 4M x 36
21MB	(4) 256K x 9	(1) 4M x 36	(1) 1M x 36
21MB	(4) 1M x 9	(1) 256KB x 36	(1) 4M x 36
21MB	(4) 1M x 9	(1) 4M x 36	(1) 256KB x 36
21MB	(4) 4M x 9	(1) 256KB x 36	(1) 1M x 36
21MB	(4) 4M x 9	(1) 1M x 36	(1) 256KB x 36
24MB	(4) 1M x 9	(1) 1M x 36	(1) 4M x 36
24MB	(4) 1M x 9	(1) 4M x 36	(1) 1M x 36
24MB	(4) 4M x 9	(1) 1M x 36	(1) 1M x 36
32MB	(4) 4M x 9	(1) 4M x 36	NONE
32MB	(4) 4M x 9	NONE	(1) 4M x 36
32MB	NONE	(1) 4M x 36	(1) 4M x 36
33MB	(4) 256K x 9	(1) 4M x 36	(1) 4M x 36
33MB	(4) 4M x 9	(1) 256KB x 36	(1) 4M x 36
33MB	(4) 4M x 9	(1) 4M x 36	(1) 256KB x 36
36MB	(4) 1M x 9	(1) 4M x 36	(1) 4M x 36
36MB	(4) 4M x 9	(1) 1M x 36	(1) 4M x 36
36MB	(4) 4M x 9	(1) 4M x 36	(1) 1M x 36
48MB	(4) 4M x 9	(1) 4M x 36	(1) 4M x 36
64MB	(4) 16M x 9	NONE	NONE
65MB	(4) 16M x 9	(1) 256KB x 36	NONE
65MB	(4) 16M x 9	NONE	(1) 256KB x 36
66MB	(4) 16M x 9	(1) 256KB x 36	(1) 256KB x 36
68MB	(4) 16M x 9	(1) 1M x 36	NONE
68MB	(4) 16M x 9	NONE	(1) 1M x 36
69MB	(4) 16M x 9	(1) 256KB x 36	(1) 1M x 36

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) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	JS1	JS2	JS3
64KB	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
128KB	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed	pins 1 & 2 closed

CPU TYPE CONFIGURATION
CPU Type	RN9	RN10	RN11
CX486S/CX486DX (PGA)	Installed	Not installed	Not installed
CX486S(PQFP)	Not installed	Not installed	Installed
CX487S	Installed	Not installed	Not installed
486SX/DX/DX2	Not installed	Not installed	Not installed
486 SL-Enhanced (PGA)	Not installed	Installed	Not installed
486 SL-Enhanced (PQFP)	Not installed	Not installed	Installed

CPU TYPE CONFIGURATION
CPU Type	JC1	JC2	JC3	JC4	JC5
486SX/486 SL Enhanced	2 & 3	2 & 3	Open	Open	Closed
CX486S	2 & 3	2 & 3	Closed	Open	Open
CX487S	1 & 2	1 & 2	Closed	Open	Open
CX486DX	1 & 2	1 & 2	Closed	Open	Open
80486DX/DX2	1 & 2	1 & 2	Closed	Open	Closed
486 SL-Enhanced	1 & 2	1 & 2	Closed	Open	Closed
Pentium Overdrive	1 & 2	1 & 2	Open	Closed	Open
Note: pins designated should be in the closed position.

CPU SPEED SELECT - JK1
Speed	Pins 1 & 2	Pins3 & 4	Pins 5 & 6	Pins 7 & 8
25MHz	Open	Open	Closed	Open
33MHz	Closed	Open	Open	Open
40MHz	Closed	Closed	Open	Open
40iMHz	Closed	Open	Closed	Closed
50MHz	Open	Open	Closed	Closed
50iMHz	Open	Closed	Open	Open
66MHz	Open	Closed	Open	Closed
66iMHz	Closed	Open	Open	Closed
80MHz	Closed	Closed	Open	Closed

VESA WAIT STATE/BUS SPEED CONFIGURATION
CPU speed	Wait states	JV1	JV2
< 33MHz	0 wait states	pins 2 & 3 closed	pins 2 & 3 closed
> 33MHz	1 wait state	pins 1 & 2 closed	pins 1 & 2 closed