GEMLIGHT COMPUTER, LTD.
GMB-P56IPS (VER. 3.02)
Device Type |
Mainboard |
Processor |
CX 6X86/AM K5/ Pentium/Pentium MMX |
Processor Speed |
75/90/100/110/120/133/150/166/200MHz |
Chip Set |
Intel 430TX |
Maximum Onboard Memory |
128MB (EDO supported) |
Cache |
256/512KB |
BIOS |
Award/AMI |
Dimensions |
220mm x 230mm |
I/O Options |
32-bit PCI slots (4), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), IR connector, green PC connector, PS/2 mouse interface, USB connectors (2) |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
Reset switch |
J1 |
USB 1 connector |
J12/pins 2 - 5 |
Green PC connector |
J2 |
PS/2 mouse interface |
J12/pins 6 - 10 |
Green PC LED connector |
J3 |
USB 2 connector |
J12/pins 12 - 15 |
Speaker |
J4 |
IR connector |
J12/pins 16 - 20 |
IDE interface LED |
J5 |
Parallel port |
J13 |
Power LED & keylock |
J6 |
Serial port 2 |
J14 |
IDE interface 1 |
J9 |
Serial port 1 |
J15 |
IDE interface 2 |
J10 |
PS/2 mouse port |
J20 |
Floppy drive interface |
J11 |
32-bit PCI slots |
PC1 - PC4 |
USER CONFIGURABLE SETTINGS | |||
Function |
Label |
Position | |
» |
Flash BIOS voltage select 5v |
JP4 |
Pins 2 & 3 closed |
Flash BIOS voltage select 12v |
JP4 |
Pins 1 & 2 closed | |
» |
CMOS memory normal operation |
JP5 |
Open |
CMOS memory clear |
JP5 |
Closed |
DRAM CONFIGURATION | ||
Size |
Bank 0 |
Bank 1 |
8MB |
(2) 1MB x 32 |
None |
16MB |
(2) 1MB x 32 |
(2) 1MB x 32 |
16MB |
(2) 2MB x 32 |
None |
24MB |
(2) 2MB x 32 |
(2) 1MB x 32 |
32MB |
(2) 2MB x 32 |
(2) 2MB x 32 |
32MB |
(2) 4MB x 32 |
None |
40MB |
(2) 4MB x 32 |
(2) 1MB x 32 |
48MB |
(2) 4MB x 32 |
(2) 2MB x 32 |
64MB |
(2) 4MB x 32 |
(2) 4MB x 32 |
64MB |
(2) 8MB x 32 |
None |
72MB |
(2) 8MB x 32 |
(2) 1MB x 32 |
80MB |
(2) 8MB x 32 |
(2) 2MB x 32 |
96MB |
(2) 8MB x 32 |
(2) 4MB x 32 |
128MB |
(2) 8MB x 32 |
(2) 8MB x 32 |
DIMM VOLTAGE SELECTION | ||
Voltage |
S7 |
S8 |
5V |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
3.3V |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
CACHE CONFIGURATION | ||
Size |
Bank 0 |
TAG |
256K |
(2) 32K x 32 |
16K x 8 or 32K x 8 |
512K |
(2) 64K x 32 |
16K x 8 or 32K x 8 |
CPU SPEED SELECTION (INTEL) | |||||||
Speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
S1 |
S2 |
S3 |
75MHz |
50MHz |
1.5x |
1 & 2 |
1 & 2 |
Closed |
Closed |
Open |
90MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
100MHz |
66MHz |
1.5x |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
120MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
Closed |
Open |
Open |
133MHz |
66MHz |
2x |
1 & 2 |
2 & 3 |
Open |
Closed |
Open |
150MHz |
60MHz |
2.5x |
2 & 3 |
2 & 3 |
Closed |
Open |
Open |
166MHz |
66MHz |
2.5x |
2 & 3 |
2 & 3 |
Open |
Closed |
Open |
180MHz |
60MHz |
3x |
2 & 3 |
1 & 2 |
Closed |
Open |
Open |
200MHz |
66MHz |
3x |
2 & 3 |
1 & 2 |
Open |
Closed |
Open |
Note: Designated pins are in the closed position. |
CPU SPEED SELECTION (INTEL MMX) | |||||||
Speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
S1 |
S2 |
S3 |
166MHz |
66MHz |
2.5x |
2 & 3 |
2 & 3 |
Open |
Closed |
Open |
200MHz |
66MHz |
3x |
2 & 3 |
1 & 2 |
Open |
Closed |
Open |
Note: Designated pins are in the closed position. |
CPU SPEED SELECTION (CX 6X86) | |||||||
Speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
S1 |
S2 |
S3 |
120MHz |
50MHz |
2x |
1 & 2 |
2 & 3 |
Closed |
Closed |
Open |
133MHz |
55MHz |
2x |
1 & 2 |
2 & 3 |
Open |
Open |
Open |
150MHz |
60MHz |
2x |
1 & 2 |
2 & 3 |
Closed |
Open |
Open |
166MHz |
66MHz |
2x |
1 & 2 |
2 & 3 |
Open |
Closed |
Open |
200MHz |
75MHz |
2x |
1 & 2 |
2 & 3 |
Open |
Open |
Closed |
Note: Designated pins are in the closed position. |
CPU SPEED SELECTION (AM K5) | |||||||
Speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
S1 |
S2 |
S3 |
75MHz |
50MHz |
1.5x |
1 & 2 |
1 & 2 |
Closed |
Closed |
Open |
90MHz |
60MHz |
1.5x |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
100MHz |
66MHz |
1.5x |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
120MHz |
60MHz |
2x |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
133MHz |
66MHz |
2x |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
150MHz |
60MHz |
2.5x |
1 & 2 |
1 & 2 |
Open |
Closed |
Open |
166MHz |
66MHz |
2.5x |
2 & 3 |
2 & 3 |
Open |
Closed |
Open |
CPU VOLTAGE SELECTION (SINGLE) | |||||
Voltage |
Q2 |
JP1 |
S4 |
S5 |
S6 |
3.4V |
2 Transistors installed |
Closed |
Closed |
Closed |
Closed |
3.5V |
2 Transistors installed |
Open |
Closed |
Closed |
Closed |
CPU VOLTAGE SELECTION (DUAL) | ||||||
V I/O |
V Core |
Q2 |
JP1 |
S4 |
S5 |
S6 |
3.4V |
2.8V |
2 Transistors installed |
Closed |
Open |
Open |
Open |