MECER CORPORATION B800/B820 (REV. A) Processor 80386DX/CX486DLC/80486SX/80487SX/80486DX/80486DX2 Processor Speed 20/25/33/40/50(internal)/50/66(internal)MHz Chip Set Unidentified Max. Onboard DRAM32MB Cache 64/128/256KB BIOS AMI Dimensions 330mm x 218mm I/O Options None NPU Options 80387DX [Image] CONNECTIONS Purpose Location Purpose Location External battery JP2 Speaker JP34 pins 6 - 10 External battery JP31 Turbo LED JP34 pins 11 - 15 Auxiliary keyboard JP33 Turbo switch JP34 pins 16 - connector 17 Power LED & keylock JP34 pins 1 - Reset switch JP34 pins 19 - 5 20 USER CONFIGURABLE SETTINGS Function Jumper Position » Monitor type select color JP3 Open Monitor type select monochrome JP3 Closed » CMOS memory normal operation JP6 pins 1 & 2 closed CMOS memory clear JP6 pins 2 & 3 closed » Factory configured - do not JP20 N/A alter » Internal battery enabled JP32 Closed Internal battery disabled JP32 Open » Factory configured - do not JP41 N/A 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) 1M x 9 32MB (4) 4M x 9 (4) 4M x 9 CACHE CONFIGURATION Size Bank 0 Bank 1 TG1 TG2 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 NONE 128KB (4) 32K x 8 NONE (1) 8K x 8 NONE 256KB (4) 32K x 8 (4) 32K x 8 (1) 8K x 8 (1) 8K x 8 CACHE JUMPER CONFIGURATION (80386DX-40) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80386DX-40 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 1 & 2 1 & 2, 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 7 & 8 128KB 1 & 2 1 & 2, 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 7 & 8 256KB 1 & 2 1 & 2, 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 7 & 8 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80386DX-40 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 2 & 3 1 & 2 128KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 2 & 3 1 & 2 256KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 2 & 3 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (CX486DLC-33) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (CX486DLC-33 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 1 & 2 1 & 2, 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 5 & 6 128KB 1 & 2 1 & 2, 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 5 & 6 256KB 1 & 2 1 & 2, 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 5 & 6 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (CX486DLC-33 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 128KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 256KB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486SX-20) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 JP30 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486SX-20 CON’T) Size JP40 W1A W1B W1C W2A 64KB 1 & 2, 3 & 4, 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8 128KB 1 & 2, 3 & 4, 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8 256KB 1 & 2, 3 & 4, 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486SX-20 CON’T) Size W2C W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486SX-25) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486SX-25 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 128KB 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486SX-25 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80487SX-20) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 JP30 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80487SX-20 CON’T) Size JP40 W1A W1B W1C W2A 64KB 1 & 2, 3 & 4, 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8 128KB 1 & 2, 3 & 4, 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8 256KB 1 & 2, 3 & 4, 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80487SX-20 CON’T) Size W2C W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX-33) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX-33 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 1 & 2 5 & 6 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 128KB 1 & 2 5 & 6 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 256KB 1 & 2 5 & 6 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX-33 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX-50) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX-50 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 1 & 2 Open 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 128KB 1 & 2 Open 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 256KB 1 & 2 Open 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX-50 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX2-50) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX2-50 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 1 & 2 5 & 6, 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 7 & 8 128KB 1 & 2 5 & 6, 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 7 & 8 256KB 1 & 2 5 & 6, 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 7 & 8 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX2-50 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX2-66) Size JP8A JP8B JP8C JP8E JP8F JP12 JP13 64KB 2 & 3 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 128KB 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 256KB 2 & 3 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX2-66 CON’T) Size JP30 JP40 W1A W1B W1C W2A W2C 64KB 1 & 2 5 & 6 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 128KB 1 & 2 5 & 6 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 256KB 1 & 2 5 & 6 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CACHE JUMPER CONFIGURATION (80486DX2-66 CON’T) Size W2D W2E W2G W2H W3A W3B W4 64KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 128KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 Note: Pins designated should be in the closed position.