CHICONY, INC. CH-471A (VER. 3) Processor CX486S/80486SX/SL80486SX/80486SX2/SL80486SX2/UMCU5S/ CX486DX/AM486DX/80486DX/SL80486DX/CX486DX2/CX486DX2V/ AM486DX2/80486DX2/SL80486DX2/AM486DX4/80486DX4/P24D/ P24T/CXM9 Processor 20/25/33/40/50(internal)/50/66(internal)/75(internal)/83(internal)/ Speed 100(internal)MHz Chip Set SIS Video Chip None Set Maximum 128MB Onboard Memory Maximum None Video Memory Cache 32/64/128/256/512/1024KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connectors (2) Options NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Reset switch J3 Speaker J8 Green PC connector J4 External battery JP19 Turbo switch J5 Green PC connector JP38 Turbo LED J6 Green PC connector JP39 Power LED & keylock J7 32-bit VESA local bus PC1 - PC3 slots USER CONFIGURABLE SETTINGS Function Label Position Clock down control by STOPCLK JP6 Pins 1 & 2 control (80486DX4) closed Clock down control by SMOUT0 JP6 Pins 2 & 3 control (all other CPUs) closed » CMOS memory normal operation JP7 Pins 1 & 2 closed CMOS memory clear JP7 Pins 2 & 3 closed Monitor type select color JP45 Closed Monitor type select monochrome JP45 Open DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x None None None 36 2MB (1) 512K x None None None 36 2MB (1) 256K x (1) 256K x None None 36 36 4MB (1) 1M x 36 None None None 4MB (1) 512K x (1) 512K x None None 36 36 5MB (1) 256K x (1) 1M x 36 None None 36 6MB (1) 256K x (1) 256K x (1) 1M x 36 None 36 36 6MB (1) 512K x (1) 1M x 36 None None 36 8MB (1) 256K x (1) 256K x (1) 512K x (1) 1M x 36 36 36 36 8MB (1) 512K x (1) 512K x (1) 1M x 36 None 36 36 8MB (1) 1M x 36 (1) 1M x 36 None None 8MB (1) 2M x 36 None None None 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 18MB (1) 256K x (1) 256K x (1) 4M x 36 None 36 36 12MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 4M x 36 None None None 17MB (1) 256K x (1) 4M x 36 None None 36 18MB (1) 512K x (1) 4M x 36 None None 36 20MB (1) 512K x (1) 512K x (1) 4M x 36 None 36 36 20MB (1) 1M x 36 (1) 4M x 36 None None 24MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 4M x 36 36 36 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 None DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 24MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 None 32MB (1) 4M x 36 (1) 4M x 36 None None 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 8M x 36 None None None 36MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 None 36MB (1) 1M x 36 (1) 8M x 36 None None 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 None 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 48MB (1) 4M x 36 (1) 8M x 36 None None 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 None 64MB (1) 16M x 36 None None None 64MB (1) 8M x 36 (1) 8M x 36 None None 68MB (1) 1M x 36 (1) 16M x 36 None None 68MB (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 None 72MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 72MB (1) 1M x 36 (1) 1M x 36 (1) 16M x 36 None 80MB (1) 4M x 36 (1) 16M x 36 None None 80MB (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 None 96MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 96MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 None 96MB (1) 4M x 36 (1) 4M x 36 (1) 16M x 36 None 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 128MB (1) 16M x 36 (1) 16M x 36 None None CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 32KB (4) 8K x 8 None (1) 8K x 8 64KB (4) 8K x 8 (4) 8K x 8 (1) 8K x 8 128KB (4) 32K x 8 None (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 16K x 8 512KB (4) 128K x 8 None (1) 32K x 8 1MB (4) 128K x 8 (4) 128K x 8 (1) 64K x 8 CACHE JUMPER CONFIGURATION Size JP1 JP2 JP3 JP4 JP5 JP14 JP16 32KB 1 & 2, 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 3 & 4 64KB 2 & 3, 1 & 2 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 4 & 5 128KB 1 & 2, 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 2 & 3 3 & 4 256KB 2 & 3, 1 & 2 2 & 3 2 & 3 2 & 3 1 & 2 2 & 3 4 & 5 512KB 1 & 2, 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 3 & 4 1MB 2 & 3, 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 4 & 5 Note: Pins designated should be in the closed position. CPU SPEED SELECTION Speed JP8 JP12 JP13 JP17 20MHz Open Open Open Pins 1 & 2 closed 25MHz Open Open Closed Pins 1 & 2 closed 33MHz Closed Closed Closed Pins 1 & 2 closed 40MHz Open Closed Closed Pins 1 & 2 closed 50iMHz Open Open Closed Pins 1 & 2 closed 50MHz Closed Open Open Pins 2 & 3 closed 66iMHz Closed Closed Closed Pins 1 & 2 closed 75iMHz Open Open Closed Pins 1 & 2 closed 83iMHz Closed Closed Closed Pins 1 & 2 closed 100iMHz Closed Closed Closed Pins 1 & 2 closed CPU TYPE SELECTION Type JP10 JP11 JP18 CX486S 2 & 3 1 & 2 Open 80486SX 1 & 2 2 & 3 Open SL80486SX 1 & 2 2 & 3 Open 80486SX2 1 & 2 2 & 3 Open SL80486SX2 1 & 2 2 & 3 Open UMC U5S 2 & 3 1 & 2 1 & 2, 3 & 4, 5 & 6 CX486DX 2 & 3 1 & 2 Open AM486DX 1 & 2 2 & 3 Open 80486DX 1 & 2 2 & 3 Open SL80486DX 1 & 2 2 & 3 Open CX486DX2 2 & 3 1 & 2 Open CX486DX2-V 2 & 3 1 & 2 Open AM486DX2 1 & 2 2 & 3 Open 80486DX2 1 & 2 2 & 3 Open SL80486DX2 1 & 2 2 & 3 Open AM486DX4 1 & 2 2 & 3 Open 80486DX4 1 & 2 2 & 3 Open P24D 1 & 2 1 & 2 Open P24T 1 & 2 1 & 2 Open CX M9 2 & 3 1 & 2 Open Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP20 JP25 CX486S Open Open 80486SX Open Open SL80486SX Open 1 & 2, 3 & 4, 9 & 10, 11 & 12 80486SX2 Open Open SL80486SX2 Open 1 & 2, 3 & 4, 9 & 10, 11 & 12 UMC U5S Open Open CX486DX 1 & 2 Open AM486DX 1 & 2 Open 80486DX 1 & 2 Open SL80486DX 1 & 2 1 & 2, 3 & 4, 9 & 10, 11 & 12 CX486DX2 1 & 2 Open CX486DX2-V 1 & 2 Open AM486DX2 1 & 2 Open 80486DX2 1 & 2 Open SL80486DX2 1 & 2 1 & 2, 3 & 4, 9 & 10, 11 & 12 AM486DX4 1 & 2 Open 80486DX4 1 & 2 1 & 2, 3 & 4, 9 & 10, 11 & 12 P24D 1 & 2 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 13 & 14, 15 & 16 P24T 1 & 2 1 & 2, 3 & 4, 9 & 10 CX M9 1 & 2 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 15 & 16 Note: Pins designated should be in the closed position. CPU TYPE SELECTION (CON’T) Type JP37 JP41 CX486S 1 & 2, 3 & 4, 5 & 6, 7 & 2 & 3 8, 9 & 10 11 & 12 80486SX Open 2 & 3 SL80486SX Open 2 & 3 80486SX2 Open 2 & 3 SL80486SX2 Open 2 & 3 UMC U5S Open 2 & 3 CX486DX 1 & 2, 3 & 4, 5 & 6, 7 & 1 & 2, 3 & 4 8, 9 & 10, 11 & 12 AM486DX Open 1 & 2, 3 & 4 80486DX Open 1 & 2, 3 & 4 SL80486DX Open 1 & 2, 3 & 4 CX486DX2 1 & 2, 3 & 4, 5 & 6, 7 & 1 & 2, 3 & 4 8, 9 & 10, 11 & 12 CX486DX2-V 1 & 2, 3 & 4, 5 & 6, 7 & 1 & 2, 3 & 4 8, 9 & 10, 11 & 12 AM486DX2 Open 1 & 2, 3 & 4 80486DX2 Open 1 & 2, 3 & 4 SL80486DX2 Open 1 & 2, 3 & 4 CPU TYPE SELECTION (CON’T) Type JP37 JP41 AM486DX4 Open 1 & 2, 3 & 4 80486DX4 Open 1 & 2, 3 & 4 P24D Open 1 & 2, 3 & 4 P24T Open 1 & 2, 3 & 4 CX M9 5 & 6 1 & 2, 3 & 4 Note: Pins designated should be in the closed position. CPU MULTIPLIER SELECTION (DX4 & CX M9 ONLY) Multiplier JP21 2x Pins 2 & 3 closed 2.5x Pins 1 & 2 closed 3x Open CPU VOLTAGE SELECTION Voltage JP26 JP32 3.15v Pins 1 & 2 closed Pins 1 & 2, 4 & 5, 7 & 8 closed 3.3v Pins 3 & 4 closed Pins 1 & 2, 4 & 5, 7 & 8 closed 3.45v Pins 5 & 6 closed Pins 1 & 2, 4 & 5, 7 & 8 closed 3.6v Pins 7 & 8 closed Pins 1 & 2, 4 & 5, 7 & 8 closed 4v Pins 9 & 10 closed Pins 1 & 2, 4 & 5, 7 & 8 closed 5v N/A Pins 2 & 3, 5 & 6, 8 & 9 closed VL BUS WAIT STATE SELECTION Setting JP44 0 Pins 1 & 2 closed 1 Pins 2 & 3 closed VL BUS SPEED SELECTION Speed JP47 <= 33MHz Pins 1 & 2 closed >33 MHz Pins 2 & 3 closed