EFA CORPORATION 34M50HL2 Processor CX486DLC/80486SX/80486DX/ODP486SX/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 Reset switch J10 Turbo LED J7 Turbo switch J11 Speaker J8 32-bit VESA Local bus S1 slot Power LED & keylock J9 32-bit VESA Local bus S2 slot USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation W1 pins 1 & 2 closed CMOS memory clear W1 pins 2 & 3 closed » Battery select internal W2 Closed Battery select external W2 Open » Monitor type select color W3 Open Monitor type select monochrome W3 Closed 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 Max Cachable Bank 0 Bank 1 TAG 64KB 16MB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB 32MB (4) 32K x 8 NONE (1) 8K x 8 256KB 64MB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size W4 W5 W6 W7 W8 W9 W10 W11 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 J2 J6 J13 J14 J15 J16 J17 JP1 JP3 CX486DLC 1 & 2 & 1 & 2 & 2 & 1 & 1 & 1 & 2 & 3 2 3 2 3 3 2 2 2 80486SX 2 & 2 & 2 & 1 & 2 & 2 & 1 & 1 & 2 & 3 3 3 3 2 3 3 2 2 80486DX 2 & 2 & 2 & 1 & 2 & 2 & 1 & 1 & 2 & 3 3 3 3 2 3 3 2 2 ODP486SX 2 & 2 & 2 & 1 & 2 & 2 & 1 & 1 & 2 & 3 3 3 3 2 3 3 2 2 80486DX2 2 & 2 & 2 & 1 & 2 & 2 & 1 & 1 & 2 & 3 3 3 3 2 3 3 2 2 Note:Pins designated should be in the closed position. VESA LOCAL BUS IDE CONTROLLER CONFIGURATION Type J6 J15 Promise Tech. (chip pins 1 & 2 closed pins 1 & 2 closed #PDC2013A) Any other pins 2 & 3 closed pins 2 & 3 closed CPU TYPE CONFIGURATION (CONT.) Type Package SW3/1 SW3/2 SW3/3 SW3/4 SW3/5 SW3/6 CX486DLC PGA Off On On Off Off Off 80486SX PGA Off Off Off On On Off 80486SX PQFP Off Off Off Off Off Off 80486DX PGA Off On On Off Off Off 80486DX PQFP On Off Off Off Off On ODP486SX PGA Off On On Off Off Off 80486DX2 PGA Off On On Off Off Off CPU TYPE CONFIGURATION (CONT.) Type SW2/1 SW2/2 SW2/3 SW2/4 SW2/5 SW2/6 CX486DLC On On On On On On 80486SX Off Off Off Off Off Off 80486DX Off Off Off Off Off Off ODP486SX Off Off Off Off Off Off 80486DX2 Off Off Off Off Off Off CPU TYPE CONFIGURATION Type J12 ODP486SX enabled pins 1 & 2 closed 80486SX enabled pins 2 & 3 closed 80486DX enabled pins 2 & 3 closed 80486DX2 enabled pins 2 & 3 closed Note:This only applies when the 80486SX/DX PQFP is disabled. CPU PIN NUMBER CONFIGURATION Type Pins J3 CX486DLC 64 N/A 80486SX 168 Open ODP486SX 169 pins 2 & 3 closed ODP486SX 168 pins 1 & 2 closed 80486DX 168 pins 1 & 2 closed 80486DX2 168 pins 1 & 2 closed CPU SPEED CONFIGURATION CPU Speed OSC. SW1/1 SW1/2 SW1/3 SW1/4 SW3/4 CX486DLC 16MHz 16MHz On On On On Off CX486DLC 20MHz 20MHz On On On Off Off CX486DLC 16MHz 32MHz Off Off On On Off CX486DLC 33MHz 66MHz Off Off Off On Off CX486DLC 40MHz 80MHz On Off Off Off Off 80486SX 20MHz 40MHz Off Off On Off On 80486SX 25MHz 25MHz On On Off On On 80487SX 20MHz 40MHz Off Off On Off N/A 80487SX 25MHz 25MHz On On Off On N/A 80486DX 25MHz 25MHz On On Off On Off 80486DX 33MHz 33MHz On Off On On Off 80486DX 50MHz 50MHz Off Off Off Off Off ODP486SX 50i 25MHz On On Off On Off MHz ODP486SX 66i 33MHz On Off On On Off MHz 80486DX2 50i 25MHz On On Off On Off MHz 80486DX2 66i 33MHz On Off On On Off MHz NPU CONFIGURATION 80387DX SW2/switch 7 Disabled Off Enabled On Note: The 80387DX can only be used with a CX486DLC CPU. The NPU must be disabled if any other CPU is used VESA WAIT STATE/BUS SPEED CONFIGURATION CPU speed Wait states J4 (ID2) J5 (ID3) £ 33MHz 0 wait states pins 1 & 2 pins 1 & 2 closed closed > 33MHz 1 wait state pins 2 & 3 pins 2 & 3 closed closed