CHICONY, INC. CH-471B Processor CX486S/80486SX/SL80486SX/SL80486SX2/CX486DX/AM486DX/SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4/P24D/ Pentium Overdrive Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set SIS Max. 128MB Onboard DRAM Cache 32/64/128/256/512/1024KB BIOS Award Dimensions 330mm x 218mm I/O 32-bit VESA local bus slots (2), floppy drive interface, game port, green PC connector, IDE interfaces (2), parallel port, Options serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Green PC connector J1 Reset switch J13 Floppy drive J4 Turbo switch J14 interface Serial port 2 J5 Turbo LED J15 IDE interface (VESA) J6 Speaker J16 Serial port 1 J7 Green PC connector J17 Game interface J8 Power LED & keylock J18 Parallel port J9 Green PC connector J19 IDE interface (ISA) J10 Voltage connector P4 External battery J11 32-bit VESA local bus SL1 & SL2 slots IDE interface LED J12 USER CONFIGURABLE SETTINGS Function Jumper Position » CMOS memory normal operation JP1 pins 1 & 2 closed CMOS memory clear JP1 pins 2 & 3 closed » Floppy drive interface enabled JP6 pins 1 & 2 closed Floppy drive interface disabled JP6 pins 2 & 3 closed » IDE interface enabled (ISA) JP7 pins 1 & 2 closed IDE interface disabled (ISA) JP7 pins 2 & 3 closed » Game port enabled JP10 pins 1 & 2 closed Game port disabled JP10 pins 2 & 3 closed » Floppy drive address range JP11 pins 2 & 3 select 3F0 to 3F7 closed Floppy drive address range JP11 pins 1 & 2 select 370 to 377 closed » ISA IDE address range select 170 JP12 pins 1 & 2 closed ISA IDE address range select 1F0 JP12 pins 2 & 3 closed » ISA IDE IRQ select IRQ15 JP32 pins 1 & 2 closed ISA IDE IRQ select IRQ14 JP32 pins 2 & 3 closed » Parallel port IRQ select IRQ7 JP30 pins 2 & 3 closed Parallel port IRQ select IRQ5 JP30 pins 1 & 2 closed » IDE interface enabled (VESA) JP38 pins 1 & 2 closed IDE interface disabled (VESA) JP38 pins 2 & 3 closed » Factory configured - do not JP44 N/A alter DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x NONE NONE NONE 36 2MB (1) 256K x (1) 256K x NONE NONE 36 36 2MB (1) 512K x NONE NONE NONE 36 4MB (1) 256K x (1) 256K x (1) 512K x NONE 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 4MB (1) 1M x 36 NONE NONE NONE 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 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 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 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 18MB (1) 256K x (1) 256K x (1) 4M x 36 NONE 36 36 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 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) 512K x (1) 512K x (1) 4M x 36 (1) 4M x 36 36 36 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 65MB (1) 256K x (1) 16M x 36 NONE NONE 36 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) 2K x 8 64KB (4) 8K x 8 (4) 8K x 8 (1) 4K 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 JP21 JP22 JP23 JP24 JP25 JP26 JP27 JP28 32KB 1 & 2 1 & 2 1 & 2 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 64KB 2 & 3 1 & 2 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 128KB 1 & 2 2 & 3 1 & 2 1 & 2 2 & 3 2 & 3 1 & 2 1 & 2 256KB 2 & 3 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 512KB 1 & 2 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1 & 2 1MB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2 1 & 2 1 & 2 1 & 2 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP39 JP42 JP45 JP46 CX486S 7 & 8, 9 & Open Open Open 10, 11 & 12 80486SX Open Open 2 & 3 2 & 3 SL80486SX 7 & 8, 9 & Open 1 & 2 2 & 3 10, 11 & 12 SL80486SX2 7 & 8, 9 & Open 1 & 2 2 & 3 10, 11 & 12 CX486DX 7 & 8, 9 & Open Open Open 10, 11 & 12 AM486DX Open Open 2 & 3 2 & 3 SL80486DX 7 & 8, 9 & Open 1 & 2 2 & 3 10, 11 & 12 80486DX Open Open 2 & 3 2 & 3 CX486DX2 7 & 8, 9 & Open Open Open 10, 11 & 12 AM486DX2 Open Open 2 & 3 2 & 3 SL80486DX2 7 & 8, 9 & Open 1 & 2 2 & 3 10, 11 & 12 80486DX2 Open Open 2 & 3 2 & 3 80486DX4 7 & 8, 9 & Open 1 & 2 2 & 3 10, 11 & 12 P24D 7 & 8, 9 & Open Open Open 10, 11 & 12 P24T 7 & 8, 9 & Open Open Open 10, 11 & 12 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION (CON’T) Type JP47 JP48 JP49 JP53 JP54 CX486S Open Open Open Closed 2 & 3 80486SX 2 & 3 2 & 3 2 & 3 Open 2 & 3 SL80486SX 2 & 3 2 & 3 2 & 3 Closed 2 & 3 SL80486SX2 2 & 3 2 & 3 2 & 3 Closed 2 & 3 CX486DX Open Open Open Closed 2 & 3 AM486DX 2 & 3 2 & 3 2 & 3 Open 2 & 3 CPU TYPE CONFIGURATION (CON’T) Type JP47 JP48 JP49 JP53 JP54 SL80486DX 2 & 3 2 & 3 2 & 3 Closed 2 & 3 80486DX 2 & 3 2 & 3 2 & 3 Open 2 & 3 CX486DX2 Open Open Open Closed 2 & 3 AM486DX2 2 & 3 2 & 3 2 & 3 Open 2 & 3 SL80486DX2 2 & 3 2 & 3 2 & 3 Closed 2 & 3 80486DX2 2 & 3 2 & 3 2 & 3 Open 2 & 3 80486DX4 2 & 3 2 & 3 2 & 3 Closed 1 & 2 P24D Open Open Open Closed 2 & 3 P24T Open Open Open Closed 2 & 3 Note: Pins designated should be in the closed position. CPU TYPE CONFIGURATION Type JP19 JP20 Intel/AMD pins 1 & 2 closed pins 2 & 3 closed Cyrix pins 2 & 3 closed pins 1 & 2 closed Intel P24D/P24T pins 1 & 2 closed pins 1 & 2 closed CPU TYPE CONFIGURATION Type JP40 JP41 JP55 80487SX pins 1 & 2, 3 pins 2 & 3 Open & 4 closed closed 80486SX/CX M6/UMC U5S pins 2 & 3 Open Open closed CX M7 pins 1 & 2, 3 pins 1 & 2 Closed & 4 closed closed Intel/AMD/Cyrix pins 1 & 2, 3 pins 1 & 2 Open & 4 closed closed CPU SPEED CONFIGURATION Speed JP36 JP37 25MHz Open Open 33MHz Closed Closed 40MHz Open Closed 50MHz Closed Open 50iMHz Open Open 66iMHz Closed Closed 75iMHz Open Open 100iMHz Closed Closed CPU SPEED CONFIGURATION Speed JP50 2x pins 2 & 3 closed 2.5x pins 1 & 2 closed 3x Open CPU VOLTAGE CONFIGURATION Voltage P3 3.3v pins 1 & 2, 4 & 5, 6 & 7 closed 5v pins 2 & 3, 5 & 6, 8 & 9 closed VESA WAIT STATE CONFIGURATION Wait states JP52 0 wait states Open 1 wait state Closed BUS SPEED CONFIGURATION CPU speed JP51 <= 33MHz Open > 33MHz Closed PARLLEL PORT CONFIGURATION Address JP8 JP9 378 pins 1 & 2 closed pins 2 & 3 closed 278 pins 1 & 2 closed pins 1 & 2 closed 3BC pins 2 & 3 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SERIAL PORT 1 CONFIGURATION Address JP2 JP3 3F8 pins 1 & 2 closed pins 1 & 2 closed 2F8 pins 1 & 2 closed pins 2 & 3 closed 3E8 pins 2 & 3 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SERIAL PORT 2 CONFIGURATION Address JP4 JP5 2F8 pins 1 & 2 closed pins 1 & 2 closed 3F8 pins 1 & 2 closed pins 2 & 3 closed 3E8 pins 2 & 3 closed pins 1 & 2 closed Disabled pins 2 & 3 closed pins 2 & 3 closed SERIAL PORT IRQ CONFIGURATION COM1 COM2 JP29 IRQ3 IRQ4 pins 1 & 2, 3 & 4 closed IRQ4 IRQ3 pins 1 & 3, 2 & 4 closed FLOPPY DRIVE MEDIA CONFIGURATION Setting JP17 JP18 All floppy types pins 1 & 2 closed pins 1 & 2 closed 2.88MB only pins 2 & 3 closed pins 2 & 3 closed