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 Memory |
128MB |
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 |
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 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
90MHz |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
100MHz |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
120MHz |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
133MHz |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
150MHz |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
166MHz |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
180MHz |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
200MHz |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 2 & 3 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 |