UNIDENTIFIED TOPCAT 386/486DX Processor 80386DX/80486DX Processor Speed 25/33MHz Chip Set Unidentified Max. Onboard DRAM 64MB Cache None BIOS Unidentified Dimensions 330mm x 218mm I/O Options None NPU Options 80387DX/3167 [Image] CONNECTIONS Purpose Location Purpose Location Speaker JP31 Reset switch JP65 Power LED & keylock JP42 Turbo switch JP66 External battery JP60 Turbo LED JP67 USER CONFIGURABLE SETTINGS Function Jumper Position » Pipeline mode disabled JP1 Open Pipeline mode enabled JP1 Closed » Ready source type select NPX jp2 pins 1 & 2 ready closed Ready source type select 330 jp2 pins 2 & 3 ready closed » Clock speed control select JP10 pins 1 & 2 keyboard closed Clock speed control select JP10 pins 2 & 3 external switch closed » Parity check disabled JP32 Open Parity check enabled JP32 Closed Monitor type select monochrome JP41 Open Monitor type select color JP41 Closed » Battery type select internal JP61 pins 1 & 2 closed Battery type select external JP61 pins 2 & 3 closed » Power good signal detect from JP62 pins 1 & 2 power supply closed Power good signal detect from JP62 pins 2 & 3 board closed » CMOS memory normal operation JP68 pins 1 & 2 closed CMOS memory clear JP68 pins 3 & 4 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (4) 256K x 9 NONE NONE NONE 2MB (4) 256K x 9 (4) 256K x 9 NONE NONE 3MB (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 NONE 4MB (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE NONE NONE 5MB (4) 256K x 9 (4) 1M x 9 NONE NONE 6MB (4) 256K x 9 (4) 256K x 9 (4) 1M x 9 NONE 8MB (4) 1M x 9 (4) 1M x 9 NONE NONE 9MB (4) 1M x 9 (4) 1M x 9 (4) 256K x 9 NONE 10MB (4) 256K x 9 (4) 256K x 9 (4) 1M x 9 (4) 1M x 9 12MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 NONE 16MB (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE NONE NONE 17MB (4) 256K x 9 (4) 4M x 9 NONE NONE 18MB (4) 256K x 9 (4) 256K x 9 (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 NONE NONE 24MB (4) 1M x 9 (4) 1M x 9 (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9 NONE NONE 33MB (4) 4M x 9 (4) 4M x 9 (4) 256K x 9 NONE 34MB (4) 256K x 9 (4) 256K x 9 (4) 4M x 9 (4) 4M x 9 36MB (4) 4M x 9 (4) 4M x 9 (4) 1M x 9 NONE 40MB (4) 1M x 9 (4) 1M x 9 (4) 4M x 9 (4) 4M x 9 48MB (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 NONE 64MB (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 (4) 4M x 9 CPU TYPE CONFIGURATION Type JP81 JP83 JP84 JP85 JP86 80386 Open 1 & 2 1 & 2 1 & 2 Open 80486 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. BIOS CONFIGURATION Type JP21 JP22 27128 Open Open 27256 Open Closed 27512 Closed Closed