EFA CORPORATION P55TPIO-B/P55TSPIO-B Processor CX M1/Pentium Processor Speed 75/90/100/120/133/150/166/200MHz Chip Set Intel Video Chip Set None Maximum Onboard 128MB Memory Maximum Video Memory None Cache 256/512KB BIOS Award Dimensions 290mm x 220mm I/O Options 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), audio bus slot, VRM connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Serial port 2 J2 IDE interface LED J14 Serial port 1 J3 Green PC connector J15 Floppy drive interface J6 Turbo LED J16 Parallel port J7 Turbo switch J17 IDE interface 2 J8 Reset switch J18 IDE interface 1 J9 32-bit PCI slots PC1 - PC3 Speaker J12 Audio bus slot SL1 Power LED & keylock J13 VRM connector VRM USER CONFIGURABLE SETTINGS Function Label Position Sound interface enabled JP2 Open Sound interface disabled JP2 Closed » Flash BIOS voltage select 5v JP5 Pins 1 & 2 closed Flash BIOS voltage select 12v JP5 Pins 2 & 3 closed » CMOS memory normal operation JP12 Open CMOS memory clear JP12 Closed DRAM CONFIGURATION Size Bank 0 Bank 1 4MB (2) 512K x 36 None 8MB (2) 1M x 36 None 8MB (2) 512K x 36 (2) 512K x 36 12MB (2) 1M x 36 (2) 512K x 36 12MB (2) 512K x 36 (2) 1M x 36 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 20MB (2) 2M x 36 (2) 512K x 36 20MB (2) 512K x 36 (2) 2M x 36 24MB (2) 2M x 36 (2) 1M x 36 24MB (2) 1M x 36 (2) 2M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 36MB (2) 4M x 36 (2) 512K x 36 36MB (2) 512K x 36 (2) 4M x 36 40MB (2) 4M x 36 (2) 1M x 36 40MB (2) 1M x 36 (2) 4M x 36 48MB (2) 4M x 36 (2) 2M x 36 48MB (2) 2M x 36 (2) 4M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 68MB (2) 8M x 36 (2) 512K x 36 DRAM CONFIGURATION (CON’T) Size Bank 0 Bank 1 68MB (2) 512K x 36 (2) 8M x 36 72MB (2) 8M x 36 (2) 1M x 36 72MB (2) 1M x 36 (2) 8M x 36 80MB (2) 8M x 36 (2) 2M x 36 80MB (2) 2M x 36 (2) 8M x 36 96MB (2) 8M x 36 (2) 4M x 36 96MB (2) 4M x 36 (2) 8M x 36 128MB (2) 8M x 36 (2) 8M x 36 Note: Board also accepts x 32 SIMMs. CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 256KB (2) 32K x 32 None (1) 16K/32K x 8 512KB (2) 32K x 32 (2) 32K x 32 (1) 16K/32K x 8 Note: The location of the TAG is unidentified. CPU SPEED SELECTION Speed JP3 JP4 JP11 75MHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 90MHz Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 100MHz Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed 120MHz Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 133MHz Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed 150MHz Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 166MHz Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed 180MHz Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 200MHz Pins 1 & 2 Pins 2 & 3 Pins 2 & 3 closed closed closed CPU MULTIPLIER SELECTION (CYRIX) Multiplier JP7 JP8 1x Pins 2 & 3 closed Pins 2 & 3 closed 2x Pins 2 & 3 closed Pins 1 & 2 closed 3x Pins 1 & 2 closed Pins 2 & 3 closed 4x Pins 1 & 2 closed Pins 1 & 2 closed CPU MULTIPLIER SELECTION (INTEL) Multiplier JP7 JP8 1.5x Pins 1 & 2 closed Pins 1 & 2 closed 2x Pins 2 & 3 closed Pins 1 & 2 closed 2.5x Pins 2 & 3 closed Pins 2 & 3 closed 3x Pins 1 & 2 closed Pins 2 & 3 closed CPU VOLTAGE SELECTION Voltage JP10 3.3v (STD) Pins 1 & 2 closed 3.4v (VR) Pins 2 & 3 closed 3.5v (VRE) Pins 4 & 5 closed 3.3v/2.5v VRM installed VRM SELECTION Type VRM All P54C Pins 17 & 19, 18 & 20, 21 & 23, 22 & 24 closed P55C VRM installed