ELITEGROUP COMPUTER SYSTEMS, INC.
SI55P AIO
|
Processor |
Pentium |
|
Processor Speed |
75/90/100/120/133/150/166MHz |
|
Chip Set |
SIS |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
128MB (EDO supported) |
|
Maximum Video Memory |
1MB |
|
Cache |
256/512/1024KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2), IR connector, VRM connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port 1 |
J6 |
Power LED & keylock |
J12 pins 11 - 15 |
|
Floppy drive interface |
J7 |
Speaker |
J12 pins 17 - 20 |
|
Parallel port |
J8 |
IDE interface LED |
J13 |
|
Serial port 2 |
J9 |
VRM connector |
J15 |
|
IDE interface 2 |
J10 |
IR connector |
JP2 |
|
IDE interface 1 |
J11 |
Green PC connector |
JP7 |
|
Turbo LED |
J12 pins 2 & 3 |
Chassis fan power |
JP23 |
|
Green PC connector |
J12 pins 4 & 5 |
32-bit PCI slots |
PC1 - PC4 |
|
Reset switch |
J12 pins 9 & 10 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
On board I/O enabled |
JP1 |
Open | |
|
On board I/O disabled |
JP1 |
Closed | |
|
Flash BIOS voltage select 12v |
JP3 |
Pins 2 & 3 closed | |
|
Flash BIOS voltage select 5v |
JP3 |
Pins 1 & 2 closed | |
|
|
Factory configured - do not alter |
JP20 |
Unidentified |
|
DRAM 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. | ||
|
DRAM PARITY CONFIGURATION | |
|
Setting |
JP8 |
|
Enabled |
Closed |
|
Disabled |
Open |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
256KB (A) |
(2) 32K x 32 |
None |
None |
|
256KB (B) |
None |
(8) 32K x 8 |
(1) 32K x 8 |
|
512KB |
None |
(8) 64K x 8 |
(1) 32K x 8 |
|
1MB |
None |
(8) 128K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP18 |
JP19 |
|
256KB (A) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
256KB (B) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
512KB |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
1MB |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CACHE VOLTAGE CONFIGURATION | |||
|
Voltage |
JP14 |
JP15 |
JP16 |
|
3.3v |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
Mixed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
CPU SPEED SELECTION | |||||||
|
CPU speed |
Clock speed |
Multiplier |
J15 |
JP21 |
JP22 |
JP25 |
JP26 |
|
75MHz |
50MHz |
1.5x |
6 & 7, 21 & 22 |
Open |
Open |
Closed |
Open |
|
90MHz |
60MHz |
1.5x |
6 & 7, 21 & 22 |
Open |
Open |
Open |
Closed |
|
100MHz |
66MHz |
1.5x |
6 & 7, 21 & 22 |
Open |
Open |
Closed |
Closed |
|
120MHz |
60MHz |
2x |
6 & 7, 21 & 22 |
Open |
Closed |
Open |
Closed |
|
133MHz |
66MHz |
2x |
6 & 7, 21 & 22 |
Open |
Closed |
Closed |
Closed |
|
150MHz |
60MHz |
2.5x |
6 & 7, 21 & 22 |
Closed |
Closed |
Open |
Closed |
|
166MHz |
66MHz |
2.5x |
6 & 7, 21 & 22 |
Closed |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | |||||||
|
CPU VOLTAGE SELECTION | |
|
Voltage |
JP17 |
|
3.3v (STD) |
Pins 1 & 2 closed |
|
3.385v (VR) |
Pins 3 & 4 closed |
|
3.525v (VRE) |
Pins 5 & 6 closed |
|
DMA CHANNEL SELECTION | ||
|
Channel |
JP4 |
JP6 |
|
1 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
3 |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
SERIAL PORT 2 SELECTION | |
|
Setting |
JP2 |
|
Used as COM2 |
Pins 5 & 6, 7 & 8 closed |
|
Used as IR connector |
Open |