NIAGARA SMD TECHNOLOGY, INC.

NT924

Processor

Pentium

Processor Speed

75/90/100/120/133/150/166MHz

Chip Set

Intel

Maximum Onboard Memory

128MB (EDO DRAM supported)

Cache

256/512KB

BIOS

Award/Phoenix

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), VRM connector, cache slot

NPU Options

None

CONNECTIONS

Function

Label

Function

Label

IDE interface 1

IDE1

PS/2 mouse interface

J10

IDE interface 2

IDE2

Floppy drive interface

J11

Power LED & keylock

J1

Serial port 1

J13

Speaker

J2

Serial port 2

J14

Reset switch

J3

Parallel port

J15

Turbo switch

J4

IDE interface LED

JP5

Turbo LED

J5

32-bit PCI slots

PC1 - PC4

Green PC LED

J6

VRM connector

VRM

Chassis fan power

J7

Cache slot

SL1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

»

On board I/O enabled

J24

Open

 

On board I/O disabled

J24

Closed

»

IDE interface 1 IRQ select IRQ14

JP2

Pins 1 & 2 closed

 

IDE interface 1 IRQ select none

JP2

Pins 2 & 3 closed

»

IDE interface 2 IRQ select IRQ15

JP3

Pins 1 & 2 closed

 

IDE interface 2 IRQ select none

JP3

Pins 2 & 3 closed

»

Flash BIOS voltage select 5v

JP6

Pins 1 & 2 closed

 

Flash BIOS voltage select 12v

JP6

Pins 2 & 3 closed

»

Jumper information unavailable

JP13

N/A

»

Jumper information unavailable

JP14

N/A

»

Keyboard clock speed select 8MHz

JP15

Pins 1 & 2 closed

 

Keyboard clock speed select 12MHz

JP15

Pins 2 & 3 closed

DRAM

Size

Bank 0

Bank 1

8MB

(2) 1M x 32

None

16MB

(2) 2M x 32

None

16MB

(2) 1M x 32

(2) 1M x 32

24MB

(2) 2M x 32

(2) 1M x 32

24MB

(2) 1M x 32

(2) 2M x 32

32MB

(2) 4M x 32

None

32MB

(2) 2M x 32

(2) 2M x 32

40MB

(2) 4M x 32

(2) 1M x 32

40MB

(2) 1M x 32

(2) 4M x 32

48MB

(2) 4M x 32

(2) 2M x 32

48MB

(2) 2M x 32

(2) 4M x 32

64MB

(2) 8M x 32

None

64MB

(2) 4M x 32

(2) 4M x 32

DRAM (CON’T)

Size

Bank 0

Bank 1

72MB

(2) 8M x 32

(2) 1M x 32

72MB

(2) 1M x 32

(2) 8M x 32

80MB

(2) 8M x 32

(2) 2M x 32

80MB

(2) 2M x 32

(2) 8M x 32

96MB

(2) 8M x 32

(2) 4M x 32

96MB

(2) 4M x 32

(2) 8M x 32

128MB

(2) 8M x 32

(2) 8M x 32

Note: Board accepts EDO memory. Board also accepts x 36 SIMMs.

CACHE SIZE

Size

Bank 0

TAG

SL1

256KB (A)

(8) 32K x 8

(1) 8K/16K x 8

Not installed

256KB (B)

None

None

Installed

512KB (A)

(8) 64K x 8

(1) 16k/32K x 8

Not installed

512KB (B)

None

None

Installed

CACHE JUMPER

Size

JP10

256KB (A/B)

Pins 1 & 2 closed

512KB (A/B)

Pins 2 & 3 closed

CPU SPEED

Setting

J25

JP7

JP9

JPS1

JPS2

75MHz

1 & 2

2 & 3

2 & 3

Open

Open

90MHz

2 & 3

2 & 3

2 & 3

Closed

Open

100MHz

2 & 3

2 & 3

2 & 3

Closed

Closed

120MHz

2 & 3

1 & 2

2 & 3

Closed

Open

133MHz

2 & 3

1 & 2

2 & 3

Closed

Closed

150MHz

2 & 3

1 & 2

1 & 2

Closed

Open

166MHz

2 & 3

1 & 2

1 & 2

Closed

Closed

Note: Pins designated should be in the closed position.

CPU TYPE

Setting

JP1

P54C

Pins 1 & 2 closed

P55C

Pins 2 & 3 closed