M TECHNOLOGY, INC.
R525 PENTIUM PCI
|
Processor |
Pentium |
|
Processor Speed |
75/90/100/120/133/150MHz |
|
Chip Set |
Intel |
|
Max. Onboard DRAM |
128MB |
|
Cache |
256/512KB |
|
BIOS |
Award |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit PCI slots (4), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VRM connector, cache slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
PS/2 mouse port |
CN1 |
Speaker |
J2 |
|
Serial port 1 |
CN2 |
Turbo switch |
J3 |
|
Serial port 2 |
CN3 |
Turbo LED |
J4 |
|
Parallel port |
CN4 |
Reset switch |
J5 |
|
Floppy drive interface |
CN5 |
Green PC connector |
J6 |
|
IDE interface 1 |
CN6 |
IDE interface LED |
JP35 |
|
IDE interface 2 |
CN7 |
32-bit PCI slots |
PC1 - PC4 |
|
VRM connector |
CN8 |
Cache slot |
SL1 |
|
Power LED & keylock |
J1 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
JP8 |
N/A |
|
|
Factory configured - do not alter |
JP9 |
N/A |
|
|
Factory configured - do not alter |
JP10 |
N/A |
|
|
Factory configured - do not alter |
JP11 |
N/A |
|
Pipeline disabled |
JP42 |
Open | |
|
Pipeline enabled |
JP42 |
Closed | |
|
|
Cache type select write back |
JP43 |
Open |
|
Cache type select write through |
JP43 |
Closed | |
|
|
Factory configured - do not alter |
JP48 |
N/A |
|
|
Factory configured - do not alter |
JP49 |
N/A |
|
|
CMOS memory normal operation |
JP54 |
Open |
|
CMOS memory clear |
JP54 |
Closed | |
|
Note: The location of the factory configured jumpers are unidentified. | |||
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
8MB |
(2) 1M x 36 |
NONE |
|
8MB |
(2) 512K x 36 |
(2) 512K x 36 |
|
10MB |
(2) 1M x 36 |
(2) 256K x 36 |
|
10MB |
(2) 256K x 36 |
(2) 1M 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 |
|
18MB |
(2) 2M x 36 |
(2) 256K x 36 |
|
18MB |
(2) 256K x 36 |
(2) 2M 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 |
|
34MB |
(2) 4M x 36 |
(2) 256K x 36 |
|
34MB |
(2) 256K x 36 |
(2) 4M 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 |
|
66MB |
(2) 8M x 36 |
(2) 256K x 36 |
|
DRAM CONFIGURATION (CONT) | ||
|
Size |
Bank 0 |
Bank 1 |
|
66MB |
(2) 256K x 36 |
(2) 8M x 36 |
|
68MB |
(2) 8M x 36 |
(2) 512K x 36 |
|
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 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
TAG |
SL1 |
|
256KB (A) |
(8) 32K x 8 |
(1) 8K/16K/32K x 8 |
Not installed |
|
256KB (B) |
NONE |
NONE |
Installed |
|
512KB (A) |
(8) 64K x 8 |
(1) 16K/32K x 8 |
Not installed |
|
512KB (B) |
NONE |
NONE |
Installed |
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
JP5 |
JP36 |
JP37 |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
512KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Note: These settings are only valid if standard cache is installed. | |||
|
CACHE CONFIGURATION | |
|
Type |
JP38 |
|
Standard cache |
pins 1 & 2 closed |
|
Pipeline burst cache |
pins 2 & 3 closed |
|
CACHE VOLTAGE CONFIGURATION | ||
|
Voltage |
JP3 |
JP4 |
|
Mixed voltage |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
3.3v |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
CN8 |
JP32 |
|
P54CX |
pins A6 & A7, B6 & B7 closed |
Open |
|
P55C 2.5v |
Open |
pins 1 & 2, 3 & 4, 5 & 6 closed |
|
P55C 2.5v on VRM |
VRM installed |
Open |
|
P55CT |
VRM installed |
Open |
|
CPU SPEED CONFIGURATION | |||||
|
Speed |
JP28 |
JP29 |
JP31 |
JP40 |
JP41 |
|
75MHz |
Open |
Open |
1 & 2 |
1 & 2 |
1 & 2 |
|
90MHz |
Open |
Closed |
2 & 3 |
1 & 2 |
1 & 2 |
|
100MHz |
Closed |
Closed |
2 & 3 |
1 & 2 |
1 & 2 |
|
120MHz |
Open |
Closed |
2 & 3 |
1 & 2 |
2 & 3 |
|
133MHz |
Closed |
Closed |
2 & 3 |
1 & 2 |
2 & 3 |
|
150MHz |
Open |
Closed |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU VOLTAGE CONFIGURATION | |||
|
Voltage |
JP44 |
JP45 |
JP46 |
|
3.3v |
Closed |
Open |
Open |
|
3.45v - 3.6v |
Open |
Closed |
Open |
|
DMA CONFIGURATION | |||
|
DMA |
JP6 |
JP7 | |
|
DMA 1 |
pins 2 & 3 closed |
pins 2 & 3 closed | |
|
DMA 3 |
pins 1 & 2 closed |
pins 1 & 2 closed | |
|
PS/2 MOUSE CONFIGURATION | |||||
|
Setting |
JP19 |
JP20 |
JP21 |
JP22 |
JP23 |
|
Disabled |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Enabled |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
FLASH BIOS CONFIGURATION | ||
|
Setting |
JP50 |
JP51 |
|
Normal mode |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
Programming mode |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
MISCELLANEOUS TECHNICAL NOTE |
|
Note: The location of some pin 1s are unidentified. |