NIAGARA SMD TECHNOLOGY, INC.
NT928SPP
Processor | Pentium Pro |
Processor Speed | 150/166/180/200/210/233/240/266/270/300MHz |
Chip Set | Intel |
Video Chip Set | None |
Maximum Onboard Memory | 512MB (EDO supported) |
Maximum Video Memory | None |
Cache | 256/512KB (located on Pentium Pro CPU) |
BIOS | AMI/Award/Phoenix |
Dimensions | 305mm x 244mm |
I/O Options | 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), Ultra-SCSI Wide interface, SCSI interface, parallel port, PS/2 mouse port, serial ports (2), ATX power connector, USB connector, IR connector |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
ATX power connector | ATX | Speaker | J31 pins 1 - 4 |
Serial port | CN1 | Power LED & keylock | J31 pins 6 - 10 |
Parallel port | CN2 | Reset switch | J31 pins 11 & 12 |
PS/2 mouse port | CN3 | SCSI LED | J31 pins 13 & 14 |
Serial port | CN4 | IDE interface LED | J31 pins 15 & 16 |
Floppy drive interface | CN5 | Green PC connector | J31 pins 17 & 18 |
IDE interface | CN6 | Turbo LED | J31 pins 19 & 20 |
IDE interface | CN7 | Power on/off switch | JP7 |
SCSI interface | CN8 | Remote power switch | JP8 |
Ultra-SCSI Wide interface | CN9 | 32-bit PCI slots | PC1 – PC4 |
Note: The location of the IR &USB connectors are unidentified. | |||
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | J32 | Unidentified |
Wide SCSI enabled | J33 | Closed | |
Wide SCSI disabled | J33 | Open | |
» | Auto power enabled | JP5 | Closed |
Auto power disabled | JP5 | Open | |
» | Factory configured - do not alter | JP6 | Unidentified |
SCSI chip enabled | JP11 | Pins 1 & 2 closed | |
SCSI chip disabled | JP11 | Pins 2 & 3 closed | |
» | Factory configured - do not alter | JP14 | Unidentified |
» | Factory configured - do not alter | JP15 | Unidentified |
DRAM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
8MB | (2) 1M x 36 | None |
16MB | (2) 2M x 36 | None |
16MB | (2) 1M x 36 | (2) 1M x 36 |
24MB | (2) 2M x 36 | (2) 1M x 36 |
32MB | (2) 4M x 36 | None |
32MB | (2) 2M x 36 | (2) 2M x 36 |
40MB | (2) 4M x 36 | (2) 1M x 36 |
48MB | (2) 4M x 36 | (2) 2M x 36 |
64MB | (2) 8M x 36 | None |
64MB | (2) 4M x 36 | (2) 4M x 36 |
72MB | (2) 8M x 36 | (2) 1M x 36 |
80MB | (2) 8M x 36 | (2) 2M x 36 |
96MB | (2) 8M x 36 | (2) 4M x 36 |
128MB | (2) 8M x 36 | (2) 8M x 36 |
128MB | (2) 16M x 36 | None |
136MB | (2) 16M x 36 | (2) 1M x 36 |
144MB | (2) 16M x 36 | (2) 2M x 36 |
DRAM CONFIGURATION (CON’T) | ||
Size | Bank 0 | Bank 1 |
160MB | (2) 16M x 36 | (2) 4M x 36 |
192MB | (2) 16M x 36 | (2) 8M x 36 |
256MB | (2) 32M x 36 | None |
256MB | (2) 16M x 36 | (2) 16M x 36 |
264MB | (2) 32M x 36 | (2) 1M x 36 |
272MB | (2) 32M x 36 | (2) 2M x 36 |
288MB | (2) 32M x 36 | (2) 4M x 36 |
320MB | (2) 32M x 36 | (2) 8M x 36 |
384MB | (2) 32M x 36 | (2) 16M x 36 |
512MB | (2) 32M x 36 | (2) 32M x 36 |
Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. The location of banks 0 & 1 are unidentified. | ||
CACHE CONFIGURATION |
Note: 256KB/512KB cache is located on the Pentium Pro CPU. |
CPU SPEED SELECTION | |
Speed | JP17 |
150MHz | Pins 1 & 2 closed |
166MHz | Pins 3 & 4 closed |
180MHz | Pins 5 & 6 closed |
200MHz | Pins 7 & 8 closed |
210MHz | Pins 9 & 10 closed |
233MHz | Pins 11 & 12 closed |
240MHz | Pins 13 & 14 closed |
266MHz | Pins 15 & 16 closed |
270MHz | Pins 17 & 18 closed |
300MHz | Pins 19 & 20 closed |
VOLTAGE SOURCE SELECTION | |
Setting | JP1 |
3.3v from on board regulator | Pins 3 & 5, 4 & 6 closed |
3.3v from ATX power supply | Pins 1 & 3, 2 & 4 closed |
SCSI TERMINATION SELECTION (LOW) | ||
Setting | JP16 | |
| » | Low byte controlled by BIOS | Pins 2 & 3 closed |
Low byte terminator on | Pins 1 & 2 closed | |
Low byte terminator off | Open | |
SCSI TERMINATION SELECTION (HIGH) | ||
Setting | JP18 | |
| » | High byte terminator on | Pins 1 & 2 closed |
High byte terminator off | Open | |
High byte controlled by BIOS | Pins 2 & 3 closed | |