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U 6983

ATC/UNITRON COMPUTER & COMPUTER PARTS

U 6983

Processor

Pentium

Processor Speed

75/90/100/120/133/150MHz

Chip Set

Unidentified

Max. Onboard DRAM

256MB

Cache

256/512/1024KB

BIOS

Award

Dimensions

330mm x 218mm

I/O Options

32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), cache slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

J1

Parallel port

J12

Turbo switch

J2

Serial port 2

J13

Reset switch

J3

IDE interface LED 2

J14

Speaker

J4

IDE interface LED 1

J15

Power LED & keylock

J5

IR connector

JP32

Green PC connector

J6

PS/2 mouse interface (optional)

MS2

IDE interface 2

J7

32-bit PCI slots

PC1 - PC4

IDE interface 1

J8

Chassis fan power

PS1

Serial port 1

J10

Cache slot

SL1

Floppy drive interface

J11

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CMOS memory normal operation

JP5

pins 1 & 2 closed

 

CMOS memory clear

JP5

pins 2 & 3 closed

Factory configured - do not alter

JP8

N/A

Factory configured - do not alter

JP10

N/A

BIOS type select EPROM

JP13

Open

 

BIOS type select 5v flash

JP13

pins 1 & 2 closed

 

BIOS type select 12v flash

JP13

pins 2 & 3 closed

Factory configured - do not alter

JP19

N/A

Factory configured - do not alter

JP22

N/A

Factory configured - do not alter

JP23

N/A

Factory configured - do not alter

JP30

N/A

DRAM CONFIGURATION

Size

Bank 0/0A

Bank 1

1MB*

(1) 256K x 36

NONE

2MB*

(1) 512K x 36

NONE

4MB*

(1) 1M x 36

NONE

8MB*

(1) 2M x 36

NONE

16MB*

(1) 4M x 36

NONE

32MB*

(1) 8M x 36

NONE

64MB*

(1) 16M x 36

NONE

2MB

(2) 256K x 36

NONE

4MB

(2) 512K x 36

NONE

4MB

(2) 256K x 36

(2) 256K x 36

6MB

(2) 512K x 36

(2) 256K x 36

6MB

(2) 256K x 36

(2) 512K x 36

8MB

(2) 1M x 36

NONE

8MB

(2) 512K x 36

(2) 512K x 36

10MB

(2) 1M x 36

(2) 256K x 36

10MB

(2) 256K x 36

(2) 1M x 36

DRAM CONFIGURATION (CON'T)

Size

Bank 0/0A

Bank 1

12MB

(2) 1M x 36

(2) 512K x 36

12MB

(2) 512K x 36

(2) 1M x 36

16MB

(2) 2M x 36

NONE

16MB

(2) 1M x 36

(2) 1M x 36

18MB

(2) 2M x 36

(2) 256K x 36

18MB

(2) 256K x 36

(2) 2M x 36

20MB

(2) 2M x 36

(2) 512K x 36

20MB

(2) 512K x 36

(2) 2M x 36

24MB

(2) 2M x 36

(2) 1M x 36

24MB

(2) 1M x 36

(2) 2M x 36

32MB

(2) 4M x 36

NONE

32MB

(2) 2M x 36

(2) 2M x 36

34MB

(2) 4M x 36

(2) 256K x 36

34MB

(2) 256K x 36

(2) 4M x 36

36MB

(2) 4M x 36

(2) 512K x 36

36MB

(2) 512K x 36

(2) 4M x 36

40MB

(2) 4M x 36

(2) 1M x 36

40MB

(2) 1M x 36

(2) 4M x 36

48MB

(2) 4M x 36

(2) 2M x 36

48MB

(2) 2M x 36

(2) 4M x 36

64MB

(2) 8M x 36

NONE

64MB

(2) 4M x 36

(2) 4M x 36

66MB

(2) 8M x 36

(2) 256K x 36

66MB

(2) 256K x 36

(2) 8M x 36

68MB

(2) 8M x 36

(2) 512K x 36

68MB

(2) 512K x 36

(2) 8M x 36

72MB

(2) 8M x 36

(2) 1M x 36

72MB

(2) 1M x 36

(2) 8M x 36

80MB

(2) 8M x 36

(2) 2M x 36

80MB

(2) 2M x 36

(2) 8M x 36

96MB

(2) 8M x 36

(2) 4M x 36

96MB

(2) 4M x 36

(2) 8M x 36

128MB

(2) 8M x 36

(2) 8M x 36

128MB

(2) 16M x 36

NONE

130MB

(2) 16M x 36

(2) 256K x 36

132MB

(2) 16M x 36

(2) 512K x 36

136MB

(2) 16M x 36

(2) 1M x 36

144MB

(2) 16M x 36

(2) 2M x 36

160MB

(2) 16M x 36

(2) 4M x 36

192MB

(2) 16M x 36

(2) 8M x 36

256MB

(2) 16M x 36

(2) 16M x 36

Note: Sizes with an * present use only Bank 0A.

CACHE CONFIGURATION

Size

Bank 0

TAG

SL1

256KB (A)

(8) 32K x 8

(1) 16K x 8

Not installed

256KB (B)

NONE

NONE

Installed

512KB (A)

(8) 64K x 8

(1) 16K x 8

Not installed

512KB (B)

NONE

NONE

Installed

1MB

(8) 128K x 8

(1) 32K x 8

Not installed

CACHE JUMPER CONFIGURATION

Size

JP8

JP10

256KB

pins 1 & 2 closed

pins 2 & 3 closed

512KB

pins 1 & 2, 3 & 4 closed

Open

1MB

pins 2 & 3 closed

pins 1 & 2 closed

Note: If SL1 is used, these jumpers are ignored.

CPU SPEED CONFIGURATION

Speed

JP16

75MHz

Open

90MHz

pins 1 & 2 closed

100MHz

pins 1 & 2, 3 & 4 closed

120MHz

pins 1 & 2 closed

133MHz

pins 1 & 2, 3 & 4 closed

150MHz

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP9

JP12

1.5x

Open

Open

2x

Closed

Open

2.5x

Closed

Closed

CPU VOLTAGE CONFIGURATION

Voltage

JP17

3.3v

pins 1 & 2 closed

3.4v

pins 2 & 3 closed

3.55v

pins 4 & 5 closed

DMA CONFIGURATION

DMA

JP29

DMA 1

pins 1 & 3, 2 & 4 closed

DMA 3

pins 3 & 5, 4 & 6 closed