NIAGARA SMD TECHNOLOGY, INC. NT928 S4 Processor Pentium Processor Speed 75/90/100/120/133/150/180/200MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video Memory None Cache 256/512KB BIOS Award/Phoenix Dimensions 330mm x 218mm I/O Options 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), SCSI connectors (2), parallel port, PS/2 mouse interface, serial ports (2), VRM connector, cache slot, IR connector NPU Options None [Image] CONNECTIONS Function Label Function Label Reset switch CN4 pins 1 Wide SCSI-2 connector J8 & 2 Turbo switch CN4 pins 3 Parallel port J9 & 4 Green PC connector CN4 pins 6 Fast SCSI-2 connector J10 & 7 Turbo LED CN4 pins 8 SCSI interface LED J11 & 9 Speaker CN4 pins 11 Serial port J12 - 14 Power LED & keylock CN4 pins 16 Serial port J13 - 20 IDE interface CN5 IDE interface LED J14 IDE interface CN6 VRM connector J15 Chassis fan power CN7 PS/2 mouse interface J22 IR connector J6 32-bit PCI slots PC1 - PC3 Floppy drive J7 Cache slot SL1 interface USER CONFIGURABLE SETTINGS Setting Label Position » Parallel IOCHRDY enabled JP5 Pins 1 & 2 closed Parallel IOCHRDY disabled JP5 Open » Parallel port IRQ select IRQ7 JP8 Pins 1 & 2 closed Parallel port IRQ select IRQ5 JP8 Pins 2 & 3 closed » On board I/O enabled JP9 Open On board I/O disabled JP9 Closed SCSI chip enabled JP10 Pins 1 & 2 closed SCSI chip disabled JP10 Pins 2 & 3 closed Flash BIOS voltage select 12v JP20 Pins 1 & 2, 5 & 6 closed Flash BIOS voltage select 5v JP20 Pins 2 & 3, 5 & 6 closed Flash BIOS or EPROM installed JP20 Pins 2 & 3, 4 & 5 closed » Jumper information unavailable JP25 N/A » SCSI type select SCSI - 2 JP26 Open SCSI type select wide SCSI - 2 JP26 Closed » Jumper information unavailable JP42 N/A 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 24MB (2) 1M x 36 (2) 2M 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 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 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 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 Note: Board accepts EDO memory. The orientation of the banks is unidentified. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG SL1 256KB (A) (4) 32K x 8 (4) 32K x 8 (1) 8K x 8 Not installed 256KB (B) None None None Installed 512KB (A) (4) 64K x 8 (4) 64K x 8 (1) 16K x 8 Not installed 512KB (B) None None None Installed CACHE JUMPER CONFIGURATION Size JP29 None Open 256KB (A) Pins 1 & 2 closed 512KB (A) Pins 2 & 3 closed CACHE TYPE CONFIGURATION Type JP34 JP35 Asynchronous Pins 1 & 2 closed Pins 2 & 3 closed Burst Pins 2 & 3 closed Pins 1 & 2 closed Pipeline burst Pins 1 & 2 closed Pins 1 & 2 closed CPU SPEED SELECTION Speed JP14 75MHz Pins 1 & 2 closed 90MHz Pins 3 & 4 closed 100MHz Pins 5 & 6 closed 120MHz Pins 7 & 8 closed 133MHz Pins 9 & 10 closed 150MHz Pins 11 & 12 closed 180MHz Pins 13 & 14 closed 200MHz Pins 15 & 16 closed CPU TYPE SELECTION Type JP16 P54C/CS/CT Pins 1 & 2 closed P55C/CT Pins 2 & 3 closed CPU VOLTAGE SELECTION Voltage JP43 JP44 JP45 3.4v Open Open Closed » 3.5v Open Closed Open 3.6v Closed Open Open CPU VRM SELECTION Setting JP39 JP40 JP41 VRM not installed Closed Closed Closed VRM installed Open Open Open DMA CHANNEL SELECTION Channel JP3 JP4 1 Pins 1 & 2 closed Pins 1 & 2 closed » 3 Pins 2 & 3 closed Pins 2 & 3 closed SERIAL PORT INTERRUPT SELECTION IRQ JP1 JP2 JP6 JP7 IRQ3 (serial Pins 1 & 2 N/A N/A N/A port 2) closed IRQ4 (serial N/A Pins 2 & 3 N/A N/A port 1) closed IRQ10 (serial N/A N/A Pins 2 & 3 N/A port 1) closed IRQ10 (serial N/A N/A Pins 1 & 2 N/A port 2) closed IRQ11 (serial N/A N/A N/A Pins 2 & 3 port 1) closed IRQ11 (serial N/A N/A N/A Pins 1 & 2 port 2) closed IDE INTERRUPT SELECTION IRQ JP11 JP12 IRQ14 (primary) Pins 1 & 2 closed N/A IRQ15 (secondary) N/A Pins 1 & 2 closed TERMINATION SELECTION Setting JP13 Terminator always on Pins 1 & 2 closed Terminator always off Open Terminator controlled by BIOS Pins 2 & 3 closed