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





486-GAC-V

FIRST INTERNATIONAL COMPUTER, INC.

486-GAC-V

Processor

80486SX/CX486S/SL enhanced/80486DX

80486DX2/80486DX4/Pentium Overdrive

Processor Speed

25/33/40/50(internal)/66(internal)/100(internal)MHz

Chip Set

VIA

Max. Onboard DRAM

64MB

Cache

64/128/256KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

3.3V Daughter board connector, 32-bit VESA local bus slot,

floppy drive interface,IDE interface, parallel port, PS/2 mouse port,

serial ports (2), VGA feature connector, VGA port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 keyboard connector

CN1

Green power supply connector

J3

PS/2 mouse connector

CN2

IDE interface LED

J6

Serial port 1

CN3

Turbo switch

J11

Serial port 2

CN4

Turbo LED

J12

Parallel port

CN5

Reset switch

J13

VGA port

CN6

Speaker

J14

Video feature connector (8514A)

CN8

Power LED & keylock

J15

Floppy drive interface

CN9

ISA Bus slot

SL1

IDE interface

CN10

32-bit VESA Local bus slot

SL2

3.3V Daughter board connector

CN11

   

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

I/O Channel not set to Adaptec (transfer rate < 5.7 MB/s)

J1

Open

 

I/O Channel set to Adaptec ISA Master (1542B/C SCSI)

J1

Closed

IDE not connected to BALE signal

J4

Open

 

IDE connected to BALE signal

J4

Closed

IDE not connected to IOCHRDY signal

J5

Open

 

IDE connected to IOCHRDY signal

J5

Closed

Password enabled

J7

Open

 

Password clear

J7

Closed

Factory configured do not alter

J9

pins 1 & 2 closed

 

Pentium Overdrive write-back

JC7

Closed

 

Pentium Overdrive write-through

JC7

Open

Local IDE enabled

JD3

pins 2 & 3 closed

 

Local IDE disabled

JD3

pins 1 & 2 closed

NS87312 I/O port address - index port 26eh, data port 26Fh

JN6

pins 1 & 2 closed

 

NS87312 I/O port address - index port 398h, data port 399h

JN6

pins 2 & 3 closed

IRQ9 disabled

JV1

Open

 

IRQ9 enabled

JV1

Closed

Onboard VGA enabled

JV2

pins 2 & 3 closed

 

Onboard VGA disabled

JV2

pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(1) 256K x 36

NONE

NONE

NONE

2MB

(1) 256K x 36

(1) 256K x 36

NONE

NONE

3MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

NONE

4MB

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

4MB

(1) 1M x 36

NONE

NONE

NONE

5MB

(1) 1M x 36

(1) 256K x 36

NONE

NONE

6MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

NONE

7MB

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

8MB

(1) 1M x 36

(1) 1M x 36

NONE

NONE

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

NONE

12MB

NONE

(1) 1M x 36

(1) 2M x 36

NONE

12MB

NONE

NONE

(1) 1M x 36

(1) 2M x 36

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

16MB

(1) 4M x 36

NONE

NONE

NONE

16MB

NONE

(1) 1M x 36

(1) 2M x 36

(1) 1M x 36

16MB

NONE

NONE

(1) 2M x 36

(1) 2M x 36

17MB

(1) 4M x 36

(1) 256K x 36

NONE

NONE

18MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

NONE

19MB

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

(1) 256K x 36

20MB

(1) 4M x 36

(1) 1M x 36

NONE

NONE

21MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

NONE

22MB

(1) 4M x 36

(1) 1M x 36

(1) 256K x 36

(1) 256K x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

NONE

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 4M x 36

(1) 4M x 36

NONE

NONE

32MB

NONE

NONE

(1) 8M x 36

NONE

32MB

NONE

NONE

NONE

(1) 8M x 36

33MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

NONE

34MB

(1) 4M x 36

(1) 4M x 36

(1) 256K x 36

(1) 256K x 36

36MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

NONE

40MB

(1) 4M x 36

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

NONE

48MB

NONE

(1) 4M x 36

(1) 8M x 36

NONE

48MB

NONE

NONE

(1) 4M x 36

(1) 8M x 36

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG (M9)

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 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

256KB

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

VESA WAIT STATE/BUS SPEED CONFIGURATION

CPU speed

Wait states

JL1

JL2

< 33MHz

0 wait states

pins 1 & 2 closed

pins 1 & 2 closed

> 33MHz

1 wait state

pins 2 & 3 closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION

Type

JC1

JC2

JC3

JC4

80486SX

pins 2 & 3 closed

pins 2 & 3 closed

Open

pins 1 & 2 closed

Cx486S

pins 2 & 3 closed

pins 2 & 3 closed

Open

pins 1 & 2 closed

Cx487S

pins 1 & 2 closed

pins 1 & 2 closed

Open

pins 1 & 2 closed

Cx486DX

pins 1 & 2 closed

pins 1 & 2 closed

Open

pins 1 & 2 closed

AM486DXL

pins 1 & 2 closed

pins 1 & 2 closed

Open

pins 1 & 2 closed

80486DX

pins 1 & 2 closed

pins 1 & 2 closed

Open

pins 1 & 2 closed

80486DX2

pins 1 & 2 closed

pins 1 & 2 closed

Open

pins 1 & 2 closed

80486DX4

pins 1 & 2 closed

pins 1 & 2 closed

Open

pins 1 & 2 closed

Pentium Overdrive

pins 1 & 2 closed

pins 1 & 2 closed

Closed

pins 2 & 3 closed

CPU TYPE CONFIGURATION (CONTINUED)

Type

JC5

RC1

RC2

RC3

80486SX

Open

Not Installed

Not Installed

Not Installed

Cx486S

Open

Not Installed

Installed

Not Installed

Cx486DX

Open

Not Installed

Installed

Not Installed

AM486DXL

Open

Not Installed

Not Installed

Installed

80486DX

Open

Not Installed

Not Installed

Not Installed

80486DX2

Open

Not Installed

Not Installed

Not Installed

80486DX4

Closed

Installed

Not Installed

Not Installed

CPU TYPE CONFIGURATION (CONTINUED)

Type

J2

J10

JX3

JX4

JX5

Regular CPU

pins 1 & 2

pins 1 & 2

N/A

Open

pins 1 & 2

SL-enhanced

pins 2 & 3

pins 2 & 3

pins 1 & 2

pins 1 & 2

pins 2 & 3

Cyrix CPU

N/A

N/A

pins 2 & 3

pins 2 & 3

N/A

Note:JX3 may not be available on some mainboards.

Pins designated are in the closed position.

CPU SPEED (VT8225N) CONFIGURATION

Clock

JK1

JK2

JK3

JK4

25 MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 1 & 2 closed

33 MHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

40 MHz

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

50 MHz

pins 2 & 3 closed

pins 1 & 2 closed

pins 2 & 3 closed

pins 2 & 3 closed

66iMHz

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

DX4 INTERNAL CLOCK CONFIGURATION

Speed

JC6

Internal 3 X

Open

 

Internal 2.5 X

pins 1 & 2 closed

 

Internal 2 X

pins 2 & 3 closed

IDE SPEED SELECT CONFIGURATION (PDC 20230 ONLY)

IDE Type

JD1

JD2

Normal

pins 2 & 3 closed

pins 2 & 3 closed

 

Fast

pins 1 & 2 closed

pins 1 & 2 closed

 

Medium

pins 2 & 3 closed

pins 1 & 2 closed

PRINTER PORT DIRECTION CONFIGURATION

Direction

JN7

JN8

Output only

pins 1 & 2 closed

pins 2 & 3 closed

 

Input only

pins 1 & 2 closed

pins 1 & 2 closed

 

Bi-directional

pins 2 & 3 closed

Closed

VRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(2) 512K x 4

NONE

2MB

(2) 512K x 4

(2) 512K x 4