EPOX COMPUTER CO., LTD. P55-TF Processor CX M1/AM K5/Pentium Processor Speed 75/90/100/120/133/150/166/180/200MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB (EDO supported) Memory Maximum Video None Memory Cache 256/512KB BIOS Award Dimensions 254mm x 218mm I/O Options 32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), cache slot, IR connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 CN1 IDE interface LED J13 Serial port 2 CN2 Green PC LED J14 Floppy drive interface CN3 Turbo LED J15 Parallel port CN4 Reset switch J16 IDE interface 2 CN5 Speaker J17 IDE interface 1 CN6 Power LED & keylock J18 PS/2 mouse interface J3 IR connector JP2 Chassis fan power J9 32-bit PCI slots PC1 – PC4 Green PC connector J12 Cache slot SL1 USER CONFIGURABLE SETTINGS Function Label Position Keyboard clock select depends on JP4 Pins 1 & 2 ISA clock closed Keyboard clock select 12MHz JP4 Pins 2 & 3 closed Flash BIOS normal operation JP6 Pins 1 & 2 closed Flash BIOS programming mode JP6 Pins 2 & 3 closed Flash BIOS voltage select 12v JP7 Pins 2 & 3 closed Flash BIOS voltage select 5v JP7 Pins 1 & 2 closed SIMM CONFIGURATION Size Bank 0 Bank 1 8MB (2) 1M x 36 None 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 24MB (2) 2M x 36 (2) 1M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 40MB (2) 4M x 36 (2) 1M x 36 48MB (2) 4M x 36 (2) 2M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 72MB (2) 8M x 36 (2) 1M x 36 80MB (2) 8M x 36 (2) 2M x 36 96MB (2) 8M x 36 (2) 4M x 36 128MB (2) 8M x 36 (2) 8M x 36 Note: Board accepts EDO memory. Board also accepts x 32 SIMMs. CACHE CONFIGURATION Size Bank 0 SL1 TAG 256KB (A) (2) 32K x 32 Not installed Unidentified 256KB (A) None 256KB module Unidentified installed 512KB (A) (2) 32K x 32 256KB module Unidentified installed 512KB (B) (2) 64K x 32 Not installed Unidentified 512KB (C) None 512KB module Unidentified installed CACHE JUMPER CONFIGURATION Size JP10 JP11 256KB (A) Pins 1 & 2 closed Pins 1 & 2 closed 256KB (A) Pins 1 & 2 closed Pins 2 & 3 closed 512KB (A) Pins 1 & 2 closed Pins 1 & 2 closed 512KB (B) Pins 2 & 3 closed Pins 1 & 2 closed 512KB (C) Pins 1 & 2 closed Pins 2 & 3 closed CPU SPEED SELECTION (CYRIX) CPU Clock Multiplier JP3 JP12 JP13 JPS1 JPS2 speed speed 120MHz 50MHz 2x 1 & 2 & 1 & Closed Closed 2 3 2 133MHz 55MHz 2x 1 & 2 & 1 & Open Open 2 3 2 150MHz 60MHz 2x 2 & 2 & 1 & Closed Open 3 3 2 166MHz 66MHz 2x 2 & 2 & 1 & Open Closed 3 3 2 Note: Pins designated should be in the closed position. J8 must be set for correct CPU type. CPU SPEED SELECTION (AMD) Note: The jumper settings for the AMD processor is unidentified. CPU SPEED SELECTION (INTEL) CPU Clock Multiplier JP3 JP12 JP13 JPS1 JPS2 speed speed 75MHz 50MHz 1.5x 1 & 2 & 2 & Closed Closed 2 3 3 90MHz 60MHz 1.5x 2 & 2 & 2 & Closed Open 3 3 3 100MHz 66MHz 1.5x 2 & 2 & 2 & Open Closed 3 3 3 120MHz 60MHz 2x 2 & 2 & 1 & Closed Open 3 3 2 133MHz 66MHz 2x 2 & 2 & 1 & Open Closed 3 3 2 150MHz 60MHz 2.5x 2 & 1 & 1 & Closed Open 3 2 2 166MHz 66MHz 2.5x 2 & 1 & 1 & Open Closed 3 2 2 180MHz 60MHz 3x 2 & 1 & 2 & Closed Open 3 2 3 200MHz 66MHz 3x 2 & 1 & 2 & Open Closed 3 2 3 Note: Pins designated should be in the closed position. J8 must be set for correct CPU type. CPU TYPE SELECTION Type JP8A JP8B JP8C JP8D Cyrix Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed closed AMD Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed closed P54C Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 Pins 1 & 2 closed closed closed closed P55C Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 Pins 2 & 3 closed closed closed closed