SEANIX TECHNOLOGY, INC.
YUKON SYSTEM BOARD
| 
 Processor  | 
 Pentium  | 
| 
 Processor Speed  | 
 75/90/100/120/133MHz  | 
| 
 Chip Set  | 
 SIS  | 
| 
 Maximum Onboard Memory  | 
 128MB  | 
| 
 Cache  | 
 256/512/1024KB  | 
| 
 BIOS  | 
 Award  | 
| 
 Dimensions  | 
 330mm x 218mm  | 
| 
 I/O Options  | 
 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), parallel port, serial port, serial port/IRDA, VGA feature connector, VRM connector, cache slot, IR connector, VGA - TV - PS/2 out connector, audio - MIDI connector, CD-ROM audio cable connector, wavetable connector  | 
| 
 NPU Options  | 
 None  | 
| 
 CONNECTIONS  | |||
| 
 Function  | 
 Label  | 
 Function  | 
 Label  | 
| 
 Serial port 2/IRDA  | 
 CN1  | 
 IDE interface LED  | 
 HD1  | 
| 
 Serial port 1  | 
 CN2  | 
 Power LED & keylock  | 
 J1  | 
| 
 VGA - TV - PS/2 out connector  | 
 CN3  | 
 CD-ROM audio connector  | 
 J2  | 
| 
 Parallel port  | 
 CN4  | 
 Reset switch  | 
 J3  | 
| 
 Floppy drive interface  | 
 CN5  | 
 Turbo LED  | 
 JP20  | 
| 
 IDE interface 1  | 
 CN6  | 
 Turbo switch  | 
 JP21  | 
| 
 IDE interface 2  | 
 CN7  | 
 Speaker  | 
 JP22  | 
| 
 VGA feature connector  | 
 CN8  | 
 IR connector  | 
 JP36  | 
| 
 VRM connector  | 
 CN9  | 
 32-bit PCI slots  | 
 PC1 - PC4  | 
| 
 Audio/MIDI cable connector  | 
 CN10  | 
 Cache slot  | 
 SL1  | 
| 
 Wavetable upgrade connector  | 
 CN11  | ||
| 
 USER CONFIGURABLE SETTINGS  | |||
| 
 Setting  | 
 Label  | 
 Position  | |
| 
 »  | 
 L1 cache always invalidated  | 
 JP5  | 
 Pins 1 & 2 closed  | 
| 
 L1 cache invalidated on write only  | 
 JP5  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 Serial port 2 used for IRDA  | 
 JP10  | 
 Pins 1 & 2 closed  | 
| 
 Serial port 2 used for COM2  | 
 JP10  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 Pipeline mode enabled  | 
 JP14  | 
 Pins 2 & 3 closed  | 
| 
 Pipeline mode disabled  | 
 JP14  | 
 Pins 1 & 2 closed  | |
| 
 »  | 
 Cache type select asynchronous  | 
 JP15  | 
 Pins 1 & 2 closed  | 
| 
 Cache type select synchronous  | 
 JP15  | 
 Pins 2 & 3 closed  | |
| 
 »  | 
 PCI bus clock speed select 33MHz  | 
 JP18  | 
 Open  | 
| 
 PCI bus clock speed select CPUCLK/2  | 
 JP18  | 
 Closed  | |
| 
 »  | 
 VGA shared memory enabled  | 
 JP24  | 
 Closed  | 
| 
 VGA shared memory disabled  | 
 JP24  | 
 Open  | |
| 
 »  | 
 Parallel port IRQ select IRQ7  | 
 JP37  | 
 Pins 1 & 2 closed  | 
| 
 Parallel port IRQ select IRQ5  | 
 JP37  | 
 Pins 2 & 3 closed  | |
| 
 Note: The location of jumpers JP24 & JP37 are unidentified.  | |||
| 
 DRAM  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 2MB  | 
 (2) 256K x 36  | 
 None  | 
| 
 4MB  | 
 (2) 512K x 36  | 
 None  | 
| 
 4MB  | 
 (2) 256K 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) 256K x 36  | 
 (2) 1M 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  | 
| 
 DRAM (CON’T)  | ||
| 
 Size  | 
 Bank 0  | 
 Bank 1  | 
| 
 18MB  | 
 (2) 256K x 36  | 
 (2) 2M x 36  | 
| 
 20MB  | 
 (2) 512K x 36  | 
 (2) 2M 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) 256K x 36  | 
 (2) 4M x 36  | 
| 
 36MB  | 
 (2) 512K x 36  | 
 (2) 4M x 36  | 
| 
 40MB  | 
 (2) 1M x 36  | 
 (2) 4M 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) 256K x 36  | 
 (2) 8M x 36  | 
| 
 68MB  | 
 (2) 512K x 36  | 
 (2) 8M x 36  | 
| 
 72MB  | 
 (2) 1M x 36  | 
 (2) 8M x 36  | 
| 
 80MB  | 
 (2) 2M x 36  | 
 (2) 8M 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.  | ||
| 
 CACHE SIZE  | |
| 
 Size  | 
 SL1  | 
| 
 256KB  | 
 Installed  | 
| 
 512KB  | 
 Installed  | 
| 
 1MB  | 
 Installed  | 
| 
 Note: Only one cache module can be installed at any one time.  | |
| 
 CPU SPEED  | ||
| 
 Setting  | 
 JP17  | 
 JP19  | 
| 
 75MHz  | 
 Closed  | 
 Closed  | 
| 
 90MHz  | 
 Open  | 
 Closed  | 
| 
 100MHz  | 
 Closed  | 
 Open  | 
| 
 120MHz  | 
 Open  | 
 Closed  | 
| 
 133MHz  | 
 Closed  | 
 Open  | 
| 
 CPU MULTIPLIER  | ||
| 
 Setting  | 
 JP6  | 
 JP7  | 
| 
 1.5x  | 
 Pins 1 & 2 closed  | 
 Pins 1 & 2 closed  | 
| 
 2x  | 
 Pins 2 & 3 closed  | 
 Pins 1 & 2 closed  | 
| 
 2.5x  | 
 Pins 1 & 2 closed  | 
 Pins 2 & 3 closed  | 
| 
 3x  | 
 Pins 2 & 3 closed  | 
 Pins 2 & 3 closed  | 
| 
 Note: The location of the above jumpers are unidentified.  | ||
| 
 MISCELLANEOUS TECHNICAL NOTE  | 
| 
 The location of pin 1 on all jumpers is unidentified.  |