AMERICAN MEGATRENDS, INC. ENTERPRISE III (VERSION 2) Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/ODP586SX Processor Speed 20/25/33/50(internal)/50/66(internal) Chip Set AMI Max. Onboard DRAM256MB Cache 256KB BIOS AMI Dimensions 355mm x 304mm I/O Options 32-bit VESA local bus slots (2), PS/2 mouse port (2) NPU Options NONE [Image] CONNECTIONS Purpose Location Purpose Location Turbo LED D5 Power LED & keylock J10 Diagnostic LED J1 Turbo switch J14 PS/2 mouse port J3 10-pin PS/2 mouse J100 connector Speaker J8 32-bit VESA Local bus S1 slot Reset switch J9 32-bit VESA Local bus S2 slot USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » Flash BIOS disabled J2 Open Flash BIOS enabled J2 Closed » CPU type select 80486DX J7 Pins 1 & 2, 3 & 4 closed CPU type select 80486SX J7 Pins 2 & 3 closed » PS/2 mouse enabled J12 Pins 1 & 2 closed PS/2 mouse disabled J12 Pins 2 & 3 closed » CPU priority select low J19 Pins 1 & 2 closed CPU priority select high J19 Pins 2 & 3 closed » Local bus ID >=33MHz J30 Pins 1 & 2 closed Local bus ID <=33MHz J30 Pins 2 & 3 closed » Factory configured - do not SW1/1 Off alter Monitor type select SW1/2 Off monochrome Monitor type select CGA SW1/2 On 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 4MB (4) 1M x 9 NONE 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 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 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 36MB (4) 1M x 9 (4) 4M x 9 (4) 4M 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 64MB (4) 16M x 9 NONE NONE NONE 128MB (4) 16M x 9 (4) 16M x 9 NONE NONE 192MB (4) 16M x 9 (4) 16M x 9 (4) 16M x 9 NONE 256MB (4) 16M x 9 (4) 16M x 9 (4) 16M x 9 (4) 16M x 9 CPU SPEED SELECT Speed J20 J21 J24 20MHz Closed Open Open 25MHz Open Open Open 33MHz Open Open Open 50I Mhz Open Open Open 50MHz Open Open Open 66I MHz Open Open Open