ZENY COMPUTERS ZEN 3486 Processor 80386DX/80486SX/80487SX/80486DX/ODP486SX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal) MHz Chip Set UMC Max. Onboard DRAM 48MB SRAM Cache 64/128KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387/3167 [Image] CONNECTIONS Function Location Function Location Speaker J2 Turbo LED J5 External Battery J3 Reset switch J6 Power LED & keylock J4 Turbo Switch W22 USER CONFIGURABLE SETTINGS Function Location Setting » Battery select internal J1 Closed Battery select external J1 Open » Factory configured - do not alter W3 Open » Factory configured - do not alter W4 Open » NPU Select 3187 or none W15 & W20 Open NPU Select 80387 W15 & W20 Closed » Factory configured do not alter W16 Open » NPU synchronous with CPU W19 Open W21 pins 1 & 2 closed NPU sysnchronous with oscillator W19 Closed installed at Y1 W21 pins 2 & 3 closed » Factory configured - do not alter W23 Open » Factory configured - do not alter W27 Open » Factory configured - do not alter W28 Open » CMOS memory normal operation W29 pins 1 & 2 closed CMOS memory clear W29 pins 2 & 3 closed Note: W27 & W28 may not be present on later revisions CPU CONFIGURATION Type CPU OSC W14 W24 W25 W26 Speed 80386DX 33MHz 66MHz Open Open N/A N/A 80386DX 40MHz 80MHz Open Open N/A N/A 80486SX 20MHz 20MHz Closed Open pins 2 Open & 3 80486SX 20MHz 40MHz Closed Open pins 2 Open & 3 80486SX 25MHz 25MHz Closed Open pins 2 Open & 3 80486SX 25MHz 50MHz Closed Closed pins 2 Open & 3 80487SX 25MHz 25MHz Closed Open pins 1 pins 2 & 2 and & 3 3 & 4 80486DX 33MHz 33MHz Closed Open pins 1 pins 1 & 2 and & 2 3 & 4 80486DX 33MHz 66MHz Closed Closed pins 1 pins 1 & 2 and & 2 3 & 4 80486DX 50MHz 50MHz Closed Open pins 1 pins 1 & 2 and & 2 3 & 4 ODP486SX 50iMHz 25MHz Closed Open pins 1 pins 2 & 2 and & 3 3 & 4 80486DX2 50iMHz 25MHz Closed Open pins 1 pins 1 & 2 and & 2 3 & 4 80486DX2 50iMHz 50MHz Closed Closed pins 1 pins 1 & 2 and & 2 3 & 4 Note:pins designated should be in the closed position. DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 W5 W6 1MB (4) 256K x None None pins 1 & pins 1 & 9 2 2 2MB (4) 256K x (4) 256K x None pins 1 & pins 1 & 9 9 2 2 3MB (4) 256K x (4) 256K x (1) 256K x pins 2 & pins 2 & 9 9 36 3 3 4MB (4) 1M x 9 None None pins 1 & pins 1 & 2 2 5MB (4) 256K x (4) 1M x 9 None pins 1 & pins 1 & 9 2 2 6MB (4) 256K x (4) 256K x (1) 1M x pins 2 & pins 2 & 9 9 36 3 3 8MB (4) 1M x 9 (4) 1M x 9 None pins 1 & pins 1 & 2 2 9MB (4) 1M x 9 (4) 1M x 9 (1) 256K x pins 2 & pins 2 & 36 3 3 10MB (4) 256K x (4) 256K x (1) 2M x pins 2 & pins 2 & 9 9 36 3 3 12MB (4) 1M x 9 (4) 1M x 9 (1) 1M x pins 2 & pins 2 & 36 3 3 16MB (4) 1M x 9 (4) 1M x 9 (1) 2M x pins 2 & pins 2 & 36 3 3 16MB (4) 4M x 9 None None pins 1 & pins 1 & 2 2 17MB (4) 256K x (4) 4M x 9 None pins 1 & pins 1 & 9 2 2 18MB (4) 256K x (4) 256K x (1) 4M x pins 2 & pins 2 & 9 9 36 3 3 20MB 4) 1M x 9 (4) 4M x 9 None pins 1 & pins 1 & 2 2 24MB (4) 1M x 9 (4) 1M x 9 (1) 4M x pins 2 & pins 2 & 36 3 3 32MB (4) 4M x 9 (4) 4M x 9 None pins 1 & pins 1 & 2 2 33MB (4) 4M x 9 (4) 4M x 9 (1) 256K x pins 2 & pins 2 & 36 3 3 36MB (4) 4M x 9 (4) 4M x 9 (1) 1M x pins 2 & pins 2 & 36 3 3 40MB (4) 4M x 9 (4) 4M x 9 (1) 2M x pins 2 & pins 2 & 36 3 3 48MB (4) 4M x 9 (4) 4M x 9 (1) 4M x pins 2 & pins 2 & 36 3 3 Note: pins designated should be in the closed position. SRAM JUMPER CONFIGURATION Jumper 32KB 64KB 128KB 256KB W1 pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed W2 Open Open pins 1 & 2 pins 2 & 3 closed closed W7 pins 1 & 2 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed W8 pins 1 & 2 pins 1 & 2 pins 2 & 3 pins 2 & 3 closed closed closed closed W9 pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed closed W10 Open Closed Closed Closed W11 Open Closed Closed Closed W12 Open Open Open Closed W13 Open Open Closed Closed W17 Open Open Open Closed W18 Open Open Closed Closed Cacheable 8MB 16MB 32MB 64MB Region Note: W10 may not be present on later revisions