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# ADVANCED INTEGRATION RESEARCH, INC.
54CMI REV. 1.0
Processor Pentium Overdrive/Pentium
Processor 75/90/100MHz
Speed
Chip Set OPTI
Max. Onboard 128MB
DRAM
Cache 256/512/1024KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit PCI bus slots (3), 32-bit VESA local bus
slots (2), floppy drive interface (2),
IDE interface, parallel port, serial ports (2),
green PC connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Serial port 1 | CN1 | Reset switch | J3 |
|----------------+----------+---------------------+----------|
| Serial port 2 | CN2 | External battery | J4 |
|----------------+----------+---------------------+----------|
| IDE interface | CN3 | Turbo switch | J5 |
|----------------+----------+---------------------+----------|
| Parallel port | CN4 | Turbo LED | J6 |
|----------------+----------+---------------------+----------|
| Floppy drive | CN5 | IDE interface LED | J7 |
| interface 2 | | | |
|----------------+----------+---------------------+----------|
| Floppy drive | CN6 | Green PC feature | JP15 |
| interface 1 | | connector | |
|----------------+----------+---------------------+----------|
| Power LED & | J1 | 32-bit PCI bus | P1 - P3 |
| keylock | | slots | |
|----------------+----------+---------------------+----------|
| Speaker | J2 | 32-bit VESA Local | SL1 & |
| | | bus slots | SL2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Turbo mode enabled/flash BIOS | J5 | Closed |
| | programming disabled | | |
|---+----------------------------------+--------+------------|
| | Turbo mode disabled/flash BIOS | J5 | Open |
| | programming enabled | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP14 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP14 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ7 | JP32 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ5 | JP32 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board PCI IDE enabled | JP35 | Open |
|---+----------------------------------+--------+------------|
| | On board PCI IDE disabled | JP35 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 18MB | (2) 256K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (2) 512K x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M 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 |
|----------------------------+-------------------------------|
| 256KB | (8) 32K x 8 |
|----------------------------+-------------------------------|
| 512KB | (8) 64K x 8 |
|----------------------------+-------------------------------|
| 1MB | (8) 128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 | JP5 |
|-------------------+--------------------+-------------------|
| 256KB | Open | Open |
|-------------------+--------------------+-------------------|
| 512KB | Open | Closed |
|-------------------+--------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JO1 | JO2 | JO3 |
|---------------+--------------+--------------+--------------|
| 75MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 90MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 100MHz | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FOUR FLOPPY DRIVE CONFIGURATION |
|------------------------------------------------------------|
| All drives | ECP mode enabled | JP29 | JP30 | JP31 |
| enabled | | | | |
|----------------+------------------+--------+-------+-------|
| Yes | No | Open | Open | Open |
|----------------+------------------+--------+-------+-------|
| No | Yes, use DMA 3 | Closed | 1 & 2 | 1 & 2 |
|----------------+------------------+--------+-------+-------|
| No | Yes, use DMA 1 | Closed | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| GREEN PC CONFIGURATION |
|------------------------------------------------------------|
| Description | JP15 |
|----------------------------------------------------+-------|
| Can be used to control video card VSYNC. Connect | Pin 1 |
| to pin 12 on VGA feature connector. | |
|----------------------------------------------------+-------|
| Can be used to control video card HSYNC. Connect | Pin 2 |
| to pin 11 on VGA feature connector. | |
|----------------------------------------------------+-------|
| Enables or disables video signals. Connect this to | Pin 3 |
| pin 18 on VGA feature connector. | |
+------------------------------------------------------------+