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# AQUARIUS SYSTEMS, INC.
MB-540S
Processor CXM1/AM K5/Pentium
Processor 75/90/100/120/133/150/180MHz
Speed
Chip Set OPTI
Max. Onboard 512MB
DRAM
Cache 256/512KB
BIOS AMI
Dimensions 330mm x 220mm
I/O Options 32-bit PCI slots (4), green PC connector, floppy
drive interface, IDE interfaces (2), parallel
port, PS/2 mouse port, serial ports (2), VRM
connector, cache slot
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+---------------+-----------|
| PS/2 mouse port | CN1 | Turbo switch | JP20 pins |
| | | | 6 & 16 |
|---------------------+----------+---------------+-----------|
| Serial port 1 | CN2 | Turbo LED | JP20 pins |
| | | | 7 & 17 |
|---------------------+----------+---------------+-----------|
| Serial port 2 | CN3 | Reset switch | JP20 pins |
| | | | 8 & 18 |
|---------------------+----------+---------------+-----------|
| Floppy drive | CN4 | Green PC | JP20 pins |
| interface | | connector | 9 & 19 |
|---------------------+----------+---------------+-----------|
| Parallel port | CN5 | IDE interface | JP20 pins |
| | | LED | 10 & 20 |
|---------------------+----------+---------------+-----------|
| IDE interface 2 | CN6 | Speaker | JP20 pins |
| | | | 11 - 14 |
|---------------------+----------+---------------+-----------|
| IDE interface 1 | CN7 | 32-bit PCI | PC1 - PC4 |
| | | slots | |
|---------------------+----------+---------------+-----------|
| VRM connector | CN8 | Cache slot | SL1 |
|---------------------+----------+---------------+-----------|
| Power LED & keylock | JP20 | | |
| | pins 1 - | | |
| | 5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ7 | JP10 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ5 | JP10 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP16 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP16 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 256K x 36 | (2) 1M 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) 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) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 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) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 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 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | NONE |
|------------------+--------------------+--------------------|
| 130MB | (2) 256K x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 132MB | (2) 512K x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 136MB | (2) 1M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (2) 2M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (2) 4M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (2) 8M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 32M x 36 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 264MB | (2) 1M x 36 | (2) 32M x 36 |
|------------------+--------------------+--------------------|
| 272MB | (2) 2M x 36 | (2) 32M x 36 |
|------------------+--------------------+--------------------|
| 288MB | (2) 4M x 36 | (2) 32M x 36 |
|------------------+--------------------+--------------------|
| 320MB | (2) 8M x 36 | (2) 32M x 36 |
|------------------+--------------------+--------------------|
| 384MB | (2) 16M x 36 | (2) 32M x 36 |
|------------------+--------------------+--------------------|
| 512MB | (2) 32M x 36 | (2) 32M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | U23 | U24 | TAG | SL1 |
|-------+-----------+-----------+----------------+-----------|
| 256KB | (1) 32K x | (1) 32K x | (1) | Not |
| | 32 | 32 | 16K/32K/64K x | installed |
| | | | 8 | |
|-------+-----------+-----------+----------------+-----------|
| 512KB | (1) 32K x | (1) 32K x | NONE | Installed |
| | 32 | 32 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 |
|-----------------------------+------------------------------|
| 256KB | Open |
|-----------------------------+------------------------------|
| 512KB | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP12 | RS1 | RS2 | RS3 |
|---------+--------+-------------+-------------+-------------|
| CXM1 | Open | Not | Installed | Not |
| | | installed | | installed |
|---------+--------+-------------+-------------+-------------|
| AM K5 | Open | Not | Not | Installed |
| | | installed | installed | |
|---------+--------+-------------+-------------+-------------|
| Pentium | Closed | Installed | Not | Not |
| | | | installed | installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (INTEL PENTIUM ONLY) |
|------------------------------------------------------------|
| Speed | JP13 | JP18 | JP19 | JP31 |
|--------+----------------+--------+--------+----------------|
| 75MHz | pins 1 & 2 | Open | Open | pins 1 & 2 |
| | closed | | | closed |
|--------+----------------+--------+--------+----------------|
| 90MHz | pins 1 & 2 | Closed | Open | pins 1 & 2 |
| | closed | | | closed |
|--------+----------------+--------+--------+----------------|
| 100MHz | pins 1 & 2 | Closed | Closed | pins 1 & 2 |
| | closed | | | closed |
|--------+----------------+--------+--------+----------------|
| 120MHz | pins 2 & 3 | Closed | Open | pins 1 & 2 |
| | closed | | | closed |
|--------+----------------+--------+--------+----------------|
| 133MHz | pins 2 & 3 | Closed | Closed | pins 1 & 2 |
| | closed | | | closed |
|--------+----------------+--------+--------+----------------|
| 150MHz | pins 1 & 2 | Open | Open | pins 2 & 3 |
| | closed | | | closed |
|--------+----------------+--------+--------+----------------|
| 180MHz | pins 1 & 2 | Closed | Open | pins 2 & 3 |
| | closed | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (CXM1 & AM K5 ONLY) |
|------------------------------------------------------------|
| CPU type | Speed | JP13 | JP31 |
|----------+------------+------------------+-----------------|
| CXM1 | 2.5x | pins 2 & 3 | pins 1 & 2 |
| | | closed | closed |
|----------+------------+------------------+-----------------|
| CXM1 | 3x | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|----------+------------+------------------+-----------------|
| AM K5 | 1x | pins 2 & 3 | pins 1 & 2 |
| | | closed | closed |
|----------+------------+------------------+-----------------|
| AM K5 | 1.5x/2x/3x | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK SPEED CONFIGURATION (CXM1 & AM K5 ONLY) |
|------------------------------------------------------------|
| Speed | JP18 | JP19 |
|-------------------+--------------------+-------------------|
| 50MHz | Open | Open |
|-------------------+--------------------+-------------------|
| 60MHz | Closed | Open |
|-------------------+--------------------+-------------------|
| 66MHz | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP23 | JP25 | JP26 |
|-----------------+--------------+-------------+-------------|
| » | 3.3v | Closed | Open | Open |
|---+-------------+--------------+-------------+-------------|
| » | 3.45v | Open | Closed | Open |
|---+-------------+--------------+-------------+-------------|
| » | 3.6v | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CONFIGURATION |
|------------------------------------------------------------|
| DMA | JP8 | JP9 |
|------------------+--------------------+--------------------|
| » | DMA 1 | pins 1 & 2 closed | pins 1 & 2 closed |
|---+--------------+--------------------+--------------------|
| » | DMA 3 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
(IMG) IMG 2
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP3 |
|-------------+------------+---------------------+-----------|
| CXM1 | Closed | pins 2 & 3 closed | Closed |
|-------------+------------+---------------------+-----------|
| AM K5 | Closed | pins 2 & 3 closed | Open |
|-------------+------------+---------------------+-----------|
| Pentium | Closed | pins 2 & 3 closed | Open |
|------------------------------------------------------------|
| Note: These jumpers are located on the cache module. |
+------------------------------------------------------------+