EFA CORPORATION ECA 34M50FL Processor 80386DX/CX486DLC/80486SX/80486DX/80486DX2 Processor Speed 16/20/25/33/40/50(internal)/50/66(internal)MHz Chip Set UMC Max. Onboard DRAM32MB Cache 64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options 32-bit VESA local bus slots (2) NPU Options 80387DX [Image] CONNECTIONS Purpose Location Purpose Location External battery J1 Turbo Switch J13 Power LED & keylock J10 Turbo LED J14 Speaker J11 Chassis fan power J15 Reset switch J12 32-bit VESA Local S1 & S2 bus slots USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation W1 pins 1 & 2 closed CMOS memory clear W1 pins 2 & 3 closed » On board battery enabled W2 pins 1 & 2 closed On board battery disabled W2 pins 2 & 3 closed » Factory configured - do not W14 Open alter DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 256K x 9 (4) 1M x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 20MB (4) 1M x 9 (4) 4M x 9 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG/U24 Dirty Bit/U37 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 (1) 16K x 8 128KB (4) 32K x 8 NONE (1) 8K x 8 (1) 16K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 (1) 16K x 8 CACHE JUMPER CONFIGURATION Size W5 W6 W7 W8 W9 W10 W11 W12 64KB 1 & 1 & 1 & Open Open Open Open Open 2 2 2 128KB 2 & 1 & 2 & 1 & 2 Open Closed Open Closed 3 2 3 256KB 2 & 2 & 1 & 2 & 3 Closed Closed Closed Closed 3 3 2 Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type SW3/1 SW3/2 SW3/3 SW3/4 SW3/5 SW3/6 CX486DLC Off On On Off Off Off 80486SX/20 Off Off Off On On Off 80486SX/25 Off Off Off Off On Off 80486SX Off Off Off Off Off Off (PQFP) 80486DX Off On On Off Off Off 80486DX On Off Off Off Off On (PQFP) ODP486SX Off On On Off Off Off 80486DX2 Off On On Off Off Off CPU TYPE CONFIGURATION (CONT.) Type Pins J9 80486SX 168 pins 1 & 2 closed 80486SX/80486DX2 168 Overdrive pins 1 & 2 closed 80486DX 168 Overdrive pins 2 & 3 closed 80486DX 169 Overdrive pins 1 & 2 closed 80486DX/80486DX2 168 pins 2 & 3 closed CPU TYPE CONFIGURATION (CONT.) Type SW2/1 SW2/2 SW2/3 SW2/4 SW2/5 SW2/6 80386 On On On On On On 80486 Off Off Off Off Off Off NPU TYPE CONFIGURATION Type SW2/switch 7 80387DX enabled On 80387DX disabled Off CPU TYPE CONFIGURATION (CONT.) Type J5 80486SX pins 2 & 3 closed 80486DX pins 2 & 3 closed ODP486SX pins 1 & 2 closed 80486DX2 pins 2 & 3 closed Note:This only applies when the 80486SX/DX PQFP is disabled. CPU SPEED CONFIGURATION CPU Speed Osc. SW1/1 SW1/2 SW1/3 SW1/4 80386DX 16MHz 16MHz On On On On 80386DX 16MHz 16MHz On On Off Off 80386DX 20MHz 20MHz On On On Off 80386DX 33MHz 33MHz On Off On On 80386DX 40MHz 80MHz On Off Off Off 80486SX 20MHz 40MHz Off Off On Off 80486SX 25MHz 25MHz On On Off On 80487SX 20MHz 40MHz Off Off On Off 80487SX 25MHz 25MHz On On Off On 80486DX 25MHz 25MHz On On Off On 80486DX 33MHz 33MHz On Off On On 80486DX 50MHz 50MHz Off Off Off Off ODP486SX 50i MHz 25MHz On On Off On ODP486SX 66i MHz 33MHz On Off On On 80486DX2 50i MHz 25MHz On On Off On 80486DX2 66i MHz 33MHz On Off On On VESA WAIT STATE/BUS SPEED CONFIGURATION CPU speed Wait states J4 J6 J7 Auto detect Auto select Closed Open Closed £ 33MHz 0 wait Closed Closed Open states > 33MHz 1 wait Open Closed Closed state