SEANIX TECHNOLOGY, INC. S801 Processor 80486SX/80486DX/80486DX2/80486DX4/Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set OPTI Max. 64MB Onboard DRAM Cache 64/128/256KB BIOS AMI/ASI Dimensions 330mm x 218mm I/O 32-bit VESA local bus slots (2) Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock J19 Turbo LED JP16 Turbo switch JP14 Reset switch S1 Speaker JP15 32-bit VESA local SL1 & SL2 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » ASI password enabled JP3 Closed ASI password disabled JP3 Open » Flash BIOS write protect JP4 pins 2 & 3 disabled closed Flash BIOS write protect enabled JP4 pins 1 & 2 closed » Flash voltage select 5v JP27 pins 1 & 2 closed Flash voltage select 12v JP27 pins 2 & 3 closed » ASI/MR BIOS JP36 Open AMI w/MEGAKEY keyboard control & JP36 Closed CMOS memory clear » Local ready delay enabled JP37 pins 1 & 2 closed Local ready = CPU ready enabled JP37 pins 2 & 3 closed » CMOS memory normal operation JP38 Open CMOS memory clear JP38 Closed » Factory configured - do not JP41 Open alter » Factory configured - do not JP42 pins 1 & 2 alter closed » Factory configured - do not JP43 Open alter » Factory configured - do not JP45 pins 1 & 2 alter closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 2MB (1) 512K x 36 NONE NONE 4MB (1) 512K x 36 (1) 512K x 36 NONE 4MB (1) 1M x 36 NONE NONE 6MB (1) 512K x 36 (1) 512K x 36 (1) 512K x 36 6MB (1) 512K x 36 (1) 1M x 36 NONE 8MB (1) 1M x 36 (1) 1M x 36 NONE 8MB (1) 2M x 36 NONE NONE 10MB (1) 512K x 36 (1) 2M x 36 NONE 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 12MB (1) 1M x 36 (1) 2M x 36 NONE 12MB (1) 512K x 36 (1) 512K x 36 (1) 2M x 36 14MB (1) 512K x 36 (1) 1M x 36 (1) 2M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE 16MB (1) 1M x 36 (1) 1M x 36 (1) 2M x 36 16MB (1) 4M x 36 NONE NONE 18MB (1) 512K x 36 (1) 2M x 36 (1) 2M x 36 20MB (1) 1M x 36 (1) 4M x 36 NONE 20MB (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 32MB (1) 8M x 36 NONE NONE 32MB (1) 4M x 36 (1) 4M x 36 NONE 40MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 48MB (1) 2M x 36 (1) 2M x 36 (1) 8M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 8M x 36 NONE 64MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 64MB (1) 16M x 36 NONE NONE CACHE CONFIGURATION Size Bank 0 Bank 1 TAG (U1) TAG (U2) 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 NONE (1) 8K x 8 (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP11 JP13 JP25 JP26 64KB pins 2 & 3 pins 2 & 3 Open Open closed closed 128KB pins 1 & 2 pins 1 & 2 Open Closed closed closed 256KB pins 2 & 3 pins 2 & 3 Closed Closed closed closed CPU TYPE CONFIGURATION Type JP20 80486SX pins 1 & 2 closed 80486DX pins 1 & 2, 3 & 4 closed 80486DX2 pins 1 & 2, 3 & 4 closed 80486DX4 pins 1 & 2, 3 & 4 closed Pentium Overdrive pins 1 & 2, 3 & 4 closed CPU SPEED CONFIGURATION Speed JP5 JP6 JP7 25MHz Open Open pins 1 & 2 closed 33MHz Closed Open pins 1 & 2 closed 40MHz Open Closed pins 1 & 2 closed 50iMHz Open Open pins 1 & 2 closed 50MHz Closed Closed pins 1 & 2 closed 66iMHz Closed Open pins 1 & 2 closed 75iMHz Open Open pins 2 & 3 closed 100iMHz Closed Open pins 2 & 3 closed CPU CLOCK SPEED CONFIGURATION (80486DX4) Speed JP39 1x Open 2x pins 1 & 2 closed 3x pins 2 & 3 closed CPU VOLTAGE CONFIGURATION Speed JP9 JP10 JP34 JP35 3.3v Open Open Open Open 5.0v Closed Closed Closed Closed VESA WAIT STATE CONFIGURATION Wait states JP23 0 wait states Open 1 wait state Closed BUS SPEED CONFIGURATION CPU speed JP24 <= 33MHz Open > 33MHz Closed