FREE COMPUTER TECHNOLOGY, INC. 486F55 Processor CX486S/AM486SX/80486SX/CX486S2/AM486SX2/80486SX2/ ODP487/80487SX/CX486DX/80486DX/CX486DX2/AM486DX2/ (SL)AM486DX2(WB)/(SL)AM486DX2(WT)/80486DX2/AM486DX4/ (SL)AM486DX4(WB)/(SL)AM486DX4(WT)/80486DX4/P24D/P24CT/ P24C(WB)/P24T Processor 25/33/40/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set SIS Video Chip None Set Maximum 256MB Onboard Memory Maximum None Video Memory Cache 128/256/512KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit PCI slots (3), floppy drive interface, green PC Options connector, IDE interfaces (2), parallel port, serial ports (2) NPU None Options [Image] CONNECTIONS Purpose Location Purpose Location Serial port CN1 Turbo switch J2 Serial port CN2 Green PC connector J3 Parallel port CN3 Turbo LED J4 Floppy drive interface CN4 Reset switch J5 IDE interface 2 CN5 Power LED & keylock J6 IDE interface 1 CN6 Speaker J7 IDE interface LED J1 32-bit PCI slots PC1 - PC3 USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP2 Pins 1 & 2 closed CMOS clear JP2 Pins 2 & 3 closed BIOS type select EPROM JP3 Open Flash BIOS type select 12v JP3 Pins 1 & 2, 4 & 5 closed Flash BIOS type select 5v JP3 Pins 2 & 3, 4 & 5 closed » Parallel port IRQ select IRQ7 JP6 Pins 1 & 2 closed Parallel port IRQ select IRQ5 JP6 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB None (1) 512K x None (1) 512K x 36 36 4MB (1) 512K x None (1) 512K x None 36 36 4MB (1) 512K x None None (1) 512K x 36 36 4MB None (1) 512K x None (1) 512K x 36 36 4MB (1) 256K x (1) 256K x None (1) 512K x 36 36 36 4MB None (1) 512K x (1) 256K x (1) 256K x 36 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 10MB (1) 2M x 36 None None (1) 512K x 36 10MB (1) 512K x None None (1) 2M x 36 36 10MB None (1) 2M x 36 None (1) 512K x 36 10MB None (1) 512K x None (1) 2M x 36 36 10MB (1) 1M x 36 (1) 1M x 36 None (1) 512K x 36 10MB (1) 256K x (1) 256K x None (1) 2M x 36 36 36 13MB (1) 256K x (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB None (1) 2M x 36 None (1) 2M x 36 16MB (1) 2M x 36 None (1) 2M x 36 None DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 16MB (1) 2M x 36 None None (1) 2M x 36 16MB None (1) 2M x 36 None (1) 2M x 36 16MB (1) 1M x 36 (1) 1M x 36 None (1) 2M x 36 16MB None (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 19MB (1) 4M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 34MB (1) 8M x 36 None None (1) 512K x 36 34MB (1) 512K x None None (1) 8M x 36 36 34MB None (1) 8M x 36 None (1) 512K x 36 34MB None (1) 512K x None (1) 8M x 36 36 34MB (1) 4M x 36 (1) 4M x 36 None (1) 512K x 36 34MB (1) 256K x (1) 256K x None (1) 8M x 36 36 36 40MB (1) 8M x 36 None None (1) 2M x 36 40MB (1) 2M x 36 None None (1) 8M x 36 40MB None (1) 8M x 36 None (1) 2M x 36 40MB None (1) 2M x 36 None (1) 8M x 36 40MB (1) 4M x 36 (1) 4M x 36 None (1) 2M x 36 40MB (1) 1M x 36 (1) 1M x 36 None (1) 8M x 36 49MB (1) 256K x (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 36 52MB (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 None (1) 8M x 36 None 64MB (1) 8M x 36 None None (1) 8M x 36 64MB None (1) 8M x 36 None (1) 8M x 36 64MB (1) 4M x 36 (1) 4M x 36 None (1) 8M x 36 64MB None (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 67MB (1) 16M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 76MB (1) 16M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 112MB (1) 16M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 130MB (1) 16M x 36 (1) 16M x 36 None (1) 512K x 36 130MB (1) 32M x 36 None None (1) 512K x 36 130MB (1) 512K x None None (1) 32M x 36 36 130MB None (1) 32M x 36 None (1) 512K x 36 130MB None (1) 512K x None (1) 32M x 36 36 130MB (1) 256K x (1) 256K x None (1) 32M x 36 36 36 136MB (1) 16M x 36 (1) 16M x 36 None (1) 2M x 36 136MB (1) 32M x 36 None None (1) 2M x 36 136MB (1) 2M x 36 None None (1) 32M x 36 136MB None (1) 32M x 36 None (1) 2M x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 Bank 2 Bank 3 136MB None (1) 2M x 36 None (1) 32M x 36 136MB (1) 1M x 36 (1) 1M x 36 None (1) 32M x 36 160MB (1) 16M x 36 (1) 16M x None (1) 8M x 36 36 160MB None (1) 8M x 36 None (1) 32M x 36 160MB (1) 32M x 36 None None (1) 8M x 36 160MB None (1) 32M x None (1) 8M x 36 36 160MB None (1) 8M x 36 None (1) 32M x 36 160MB (1) 4M x 36 (1) 4M x 36 None (1) 32M x 36 193MB (1) 256K x (1) 16M x (1) 16M x (1) 16M x 36 36 36 36 196MB (1) 1M x 36 (1) 16M x (1) 16M x (1) 16M x 36 36 36 208MB (1) 4M x 36 (1) 16M x (1) 16M x (1) 16M x 36 36 36 256MB (1) 16M x 36 (1) 16M x (1) 16M x (1) 16M x 36 36 36 256MB (1) 16M x 36 (1) 16M x None (1) 32M x 36 36 256MB (1) 32M x 36 None (1) 32M x None 36 256MB (1) 32M x 36 None None (1) 32M x 36 256MB None (1) 32M x None (1) 32M x 36 36 256MB None (1) 32M x (1) 16M x (1) 16M x 36 36 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 None (1) 8K/16K/32K x 8 256KB (A) (4) 64K x 8 None (1) 16K/32K x 8 256KB (B) (4) 32K x 8 (4) 32K x 8 (1) 16K/32K x 8 512KB (4) 128K x 8 None (1) 32K x 8 CACHE JUMPER CONFIGURATION Size JP15 JP16 JP20 128KB Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 256KB (A) Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed 256KB (B) Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed 512KB Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed CPU SPEED SELECTION Speed JP22 JP23 25MHz Open Open 33MHz Closed Closed 40MHz Open Closed 50iMHz Open Open 66iMHz Closed Closed 75iMHz Open Open 100iMHz Closed Closed CPU TYPE SELECTION Type JP8 JP9 JP10 JP11 CX486S Open 1 & 2, 5 2 & 3, 5 & 1 & 2, 4 & & 6 6, 7 & 8 5, 6 & 7 AM486SX Open 1 & 2, 4 2 & 3, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 80486SX Open 1 & 2, 4 2 & 3, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 CX486S2 Open 1 & 2, 5 2 & 3, 5 & 4 & 5, 6 & & 6 6, 7 & 8 7 AM486SX2 Open 1 & 2, 4 2 & 3, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 80486SX2 Open 1 & 2, 4 2 & 3, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 ODP487 Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 80487SX Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 CX486DX Open 1 & 2, 5 1 & 2, 5 & 4 & 5, 6 & & 6 6, 7 & 8 7 80486DX Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 CX486DX2 Open 1 & 2, 5 1 & 2, 5 & 4 & 5, 6 & & 6 6, 7 & 8 7 AM486DX2 Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 (SL)AM486DX2 (WB) 2 & 3 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 (SL)AM486DX2 (WT) 2 & 3 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 80486DX2 Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 AM486DX4 Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 (SL)AM486DX4 (WB) Open 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6 (SL)AM486DX4 (WT) Open 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 80486DX4 Open 1 & 2, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 P24D Open 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 P24CT Open 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 P24C (WB) Open 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 P24T Open 2 & 3, 4 1 & 2, 4 & 3 & 4, 5 & & 5 5, 6 & 7 6, 7 & 8 Note: Pins designated should be in the closed position. CPU VOLTAGE SELECTION Voltage JP17 JP18 JP19 3.3v (Intel/AMD 3v Open Open Open CPU) 3.6v (Cyrix 3v CPU) Closed Open Open 5v Open Closed Closed DMA CHANNEL SELECTION Channel JP4 JP5 » 1 Pins 1 & 2 closed Pins 1 & 2 closed 3 Pins 2 & 3 closed Pins 2 & 3 closed