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# GEMLIGHT COMPUTER, LTD
GMB-P55IPS (VER. 1.10)
Processor CX M1/AM K5/Pentium
Processor Speed 75/83/90/100/110/120/133/150/166/180/200MHz
Chip Set Intel/Winbond
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Award/AMI
Dimensions 265mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, USB connectors (2),
PS/2 mouse connector, PS/2 keyboard, keyboard
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse | CN1 | USB connector 1 | J9 |
| connector | | | |
|-------------------+----------+------------------+----------|
| PS/2 keyboard | CN2 | USB connector 2 | J10 |
|-------------------+----------+------------------+----------|
| Keyboard | CN3 | Parallel port | J11 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Power LED & | J2 | Serial port 2 | J12 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J4 | Serial port 1 | J13 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J5 | Turbo LED | J19 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J6 | Green PC | JP8 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J7 | Reset switch | JP11 |
|-------------------+----------+------------------+----------|
| Floppy drive | J8 | 32-bit PCI slots | PC1 - |
| interface | | | PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J3 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP13 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP13 | Closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP20 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP20 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|-------------+------------------------+---------------------|
| 2MB | (2) 256K x 36 | None |
|-------------+------------------------+---------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|-------------+------------------------+---------------------|
| 8MB | (2) 1M x 36 | None |
|-------------+------------------------+---------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|-------------+------------------------+---------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|-------------+------------------------+---------------------|
| 16MB | (2) 2M x 36 | None |
|-------------+------------------------+---------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|-------------+------------------------+---------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|-------------+------------------------+---------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|-------------+------------------------+---------------------|
| 32MB | (2) 4M x 36 | None |
|-------------+------------------------+---------------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 |
|-------------+------------------------+---------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|-------------+------------------------+---------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|-------------+------------------------+---------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|-------------+------------------------+---------------------|
| 64MB | (2) 8M x 36 | None |
|-------------+------------------------+---------------------|
| 66MB | (2) 8M x 36 | (2) 256K 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. Board also accepts x 32 |
| SIMMs. Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|----------+---------------+---------------+-----------------|
| 512KB | (2) 32K x 32 | (2) 32K x 32 | (1) 16K/32K x 8 |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|----------+---------+------------+--------+------+----------|
| 100MHz | 50MHz | 2x | Closed | Open | 1 & 2, 3 |
| | | | | | & 4 |
|----------+---------+------------+--------+------+----------|
| 110MHz | 55MHz | 2x | Closed | Open | Open |
|----------+---------+------------+--------+------+----------|
| 120MHz | 60MHz | 2x | Closed | Open | 3 & 4 |
|----------+---------+------------+--------+------+----------|
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|----------+---------+------------+--------+------+----------|
| 75MHz | 50MHz | 1.5x | Open | Open | 1 & 2, 3 |
| | | | | | & 4 |
|----------+---------+------------+--------+------+----------|
| 83MHz | 55MHz | 1.5x | Open | Open | Open |
|----------+---------+------------+--------+------+----------|
| 90MHz | 60MHz | 1.5x | Open | Open | 3 & 4 |
|----------+---------+------------+--------+------+----------|
| 100MHz | 66MHz | 1.5x | Open | Open | 1 & 2 |
|----------+---------+------------+--------+------+----------|
| 120MHz | 60MHz | 2x | Closed | Open | 3 & 4 |
|----------+---------+------------+--------+------+----------|
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP18 |
| speed | speed | | | | |
|---------+--------+------------+--------+--------+----------|
| 75MHz | 50MHz | 1.5x | Open | Open | 1 & 2, 3 |
| | | | | | & 4 |
|---------+--------+------------+--------+--------+----------|
| 90MHz | 60MHz | 1.5x | Open | Open | 3 & 4 |
|---------+--------+------------+--------+--------+----------|
| 100MHz | 66MHz | 1.5x | Open | Open | 1 & 2 |
|---------+--------+------------+--------+--------+----------|
| 120MHz | 60MHz | 2x | Closed | Open | 3 & 4 |
|---------+--------+------------+--------+--------+----------|
| 133MHz | 66MHz | 2x | Closed | Open | 1 & 2 |
|---------+--------+------------+--------+--------+----------|
| 150MHz | 60MHz | 2.5x | Closed | Closed | 3 & 4 |
|---------+--------+------------+--------+--------+----------|
| 166MHz | 66MHz | 2.5x | Closed | Closed | 1 & 2 |
|---------+--------+------------+--------+--------+----------|
| 180MHz | 60MHz | 3x | Open | Closed | 3 & 4 |
|---------+--------+------------+--------+--------+----------|
| 200MHz | 66MHz | 3x | Open | Closed | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP9 | JP10 |
|--------------------+-------------------+-------------------|
| 3.4v | Open | Closed |
|--------------------+-------------------+-------------------|
| 3.5v | Closed | Open |
+------------------------------------------------------------+