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# MICROMODULE SYSTEMS, INC.
GEMINI (REV. 2.0)
Processor Pentium
Processor Speed 120/133/150MHz
Chip Set Pico
Video Chip Set None
Maximum Onboard Memory 256MB
Maximum Video Memory None
Cache 256KB
BIOS IBM/SystemSoft/Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (3)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location |
|-------------------------------+----------------------------|
| 32-bit PCI slots | PC1 – PC3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | Test/monitor header | JP1 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP2 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP3 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP4 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP5 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP6 | Unidentified |
|---+---------------------------------+-------+--------------|
| » | PCI voltage select 5v | JP7 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | PCI voltage select 3v | JP7 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP9 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP13 | Unidentified |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP17 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP18 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Speaker enabled | JP21 | Closed |
|---+---------------------------------+-------+--------------|
| | Speaker disabled | JP21 | Open |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP22 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP22 | Closed |
|---+---------------------------------+-------+--------------|
| » | VPP power disabled | JP23 | Open |
|---+---------------------------------+-------+--------------|
| | VPP power enabled | JP23 | Closed |
|---+---------------------------------+-------+--------------|
| » | ROM write disabled | JP24 | Open |
|---+---------------------------------+-------+--------------|
| | ROM write enabled | JP24 | Closed |
|---+---------------------------------+-------+--------------|
| » | Data rate select pin 6 | JP27 | Open |
|---+---------------------------------+-------+--------------|
| | Data rate select pin 6 & 27 | JP27 | Closed |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP28 | Unidentified |
|---+---------------------------------+-------+--------------|
| » | H8 clock select PLL clock | JP29 | Pins 1 & 2 |
| | generator | | closed |
|---+---------------------------------+-------+--------------|
| | H8 clock select crystal | JP29 | Pins 2 & 3 |
| | oscillator | | closed |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP501 | Unidentified |
|---+---------------------------------+-------+--------------|
| | Test/monitor header | JP502 | Unidentified |
|------------------------------------------------------------|
| Note: The location of the test/monitor headers is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 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 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM MODULE POWER SELECTION |
|------------------------------------------------------------|
| Setting | JP19 |
|--------------------------+---------------------------------|
| » | Enabled | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|---+----------------------+---------------------------------|
| | Disabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM POWER SUPPLY SELECTION |
|------------------------------------------------------------|
| Setting | JP20 |
|--------------------------+---------------------------------|
| » | Enabled | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|---+----------------------+---------------------------------|
| | Disabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: The location of the cache is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP10 | JP11 | JP12 |
|--------------+---------------+--------------+--------------|
| 32MHz | Open | Closed | Closed |
|--------------+---------------+--------------+--------------|
| 40MHz | Open | Open | Closed |
|--------------+---------------+--------------+--------------|
| 50MHz | Closed | Closed | Open |
|--------------+---------------+--------------+--------------|
| 60MHz | Closed | Open | Closed |
|--------------+---------------+--------------+--------------|
| 66MHz | Open | Closed | Open |
|--------------+---------------+--------------+--------------|
| 75MHz | Closed | Closed | Closed |
|--------------+---------------+--------------+--------------|
| 80MHz | Closed | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP8 |
|----------------------------+-------------------------------|
| P54C | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| P55C | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 SELECTION |
|------------------------------------------------------------|
| Setting | JP36/pins 1 | JP36/pins 3 | JP36/pins 5 |
| | & 2 | & 4 | & 6 |
|------------------+-------------+-------------+-------------|
| | Used as H8 | Closed | Closed | Open |
|---+--------------+-------------+-------------+-------------|
| » | Used as IR | Open | Open | Closed |
| | connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI REQ/INT SELECTION |
|------------------------------------------------------------|
| Setting | JP34 | JP35 |
|------------------------+-----------------+-----------------|
| » | Normal operation | Open | Open |
|---+--------------------+-----------------+-----------------|
| | Test mode | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CLOCK SKEW SELECTION |
|------------------------------------------------------------|
| Skew | JP14 | JP15 | JP16 |
|-------+-----------------+-----------------+----------------|
| 0 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| .55 | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 1.10 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 1.65 | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| -2.20 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| -1.65 | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| -1.10 | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| -.55 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+