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# AQUARIUS SYSTEMS, INC.
MB-4DUPC
Processor CX486S/80486SX/SL80486SX/CX486DX/AM486DX/UMCU5S/80486DX/
SL80486DX/CX486DX2/AM486DX2/80486DX2/SL80486DX2/AM486DX4/
80486DX4/P24D/Pentium Overdrive/CXM1
Processor 20/25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)/MHz
Speed
Chip Set UMC
Max. 128MB
Onboard
DRAM
Cache 128/256/512KB
BIOS Award
Dimensions 260mm x 220mm
I/O 32-bit PCI slots (3), floppy drive interface, game port, green PC
Options connector, IDE interfaces (2), parallel port, serial ports (2)
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | CN1 | Power LED & | CN9 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN2 | Speaker | CN10 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | IDE interface | D9 |
| interface | | LED | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Green PC | JP9 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Game interface | CN5 | Turbo switch | JP44 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN6 | Reset switch | JP45 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN7 | Turbo LED | LED1 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN8 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| | Flash BIOS voltage select 12v | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS voltage select 5v | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory normal operation | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP6 | pins 3 & 4 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP28 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP29 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP31 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP37 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 2MB | (1) 512K x | NONE | NONE | NONE |
| | 36 | | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 512K x | (1) 512K x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 512K x | (1) 512K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------------+---------------+---------------+--------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB (A) | (4) 64K x 8 | NONE | (1) 32K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB (B) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|-------------+---------------+---------------+--------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP24 | JP25 | JP26 |
|-----------+-------------------+------------+---------------|
| 128KB | Open | pins 1 & 2 | Open |
| | | closed | |
|-----------+-------------------+------------+---------------|
| 256KB (A) | pins 1 & 2 closed | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|-----------+-------------------+------------+---------------|
| 256KB (B) | pins 1 & 2 closed | pins 2 & 3 | Open |
| | | closed | |
|-----------+-------------------+------------+---------------|
| 512KB | pins 1 & 2, 3 & 4 | pins 1 & 2 | pins 1 & 2, 3 |
| | closed | closed | & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP10 | JP27 | JP30 | JP32 | JP34 |
|------------+--------+--------+----------+----------+-------|
| CX486S | Open | Open | Open | 1 & 2, 3 | 1 & 2 |
| | | | | & 4 | |
|------------+--------+--------+----------+----------+-------|
| 80486sx | Closed | Open | Open | Open | Open |
|------------+--------+--------+----------+----------+-------|
| SL80486SX | Open | Open | Open | 2 & 3, 4 | Open |
| | | | | & 5 | |
|------------+--------+--------+----------+----------+-------|
| CX486DX | Open | Open | 3 & 4 | 1 & 2, 3 | 1 & 2 |
| | | | | & 4 | |
|------------+--------+--------+----------+----------+-------|
| AM486DX | Closed | Open | 3 & 4 | Open | Open |
|------------+--------+--------+----------+----------+-------|
| UMC U5S | Closed | Open | 1 & 2, 3 | Open | Open |
| | | | & 4 | | |
|------------+--------+--------+----------+----------+-------|
| 80486DX | Closed | Open | 3 & 4 | Open | Open |
|------------+--------+--------+----------+----------+-------|
| SL80486DX | Open | Open | 3 & 4 | 2 & 3, 4 | Open |
| | | | | & 5 | |
|------------+--------+--------+----------+----------+-------|
| CX486DX2 | Open | Open | 3 & 4 | 1 & 2, 3 | 1 & 2 |
| | | | | & 4 | |
|------------+--------+--------+----------+----------+-------|
| AM486DX2 | Closed | Open | 3 & 4 | Open | Open |
|------------+--------+--------+----------+----------+-------|
| 80486DX2 | Closed | Open | 3 & 4 | Open | Open |
|------------+--------+--------+----------+----------+-------|
| SL80486DX2 | Open | Open | 3 & 4 | 2 & 3, 4 | Open |
| | | | | & 5 | |
|------------+--------+--------+----------+----------+-------|
| AM486DX4 | Closed | Open | 3 & 4 | Open | Open |
|------------+--------+--------+----------+----------+-------|
| 80486DX4 | Open | Open | 3 & 4 | 2 & 3, 4 | Open |
| | | | | & 5 | |
|------------+--------+--------+----------+----------+-------|
| P24D | Open | Open | 3 & 4 | 2 & 3, 4 | Open |
| | | | | & 5 | |
|------------+--------+--------+----------+----------+-------|
| P24T | Open | Open | 2 & 3 | 2 & 3, 4 | 2 & 3 |
| | | | | & 5 | |
|------------+--------+--------+----------+----------+-------|
| CX M1 | Open | Closed | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| | | | | & 5 | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP35 | JP36 | JP39 | JP39 |
|---------------+-----------+-----------+----------+---------|
| CX486S | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|---------------+-----------+-----------+----------+---------|
| 80486sx | Open | Open | Open | Open |
|---------------+-----------+-----------+----------+---------|
| SL80486SX | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+-----------+-----------+----------+---------|
| CX486DX | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|---------------+-----------+-----------+----------+---------|
| AM486DX | Open | Open | Open | Open |
|---------------+-----------+-----------+----------+---------|
| UMC U5S | Open | Open | 2 & 3 | 2 & 3 |
|---------------+-----------+-----------+----------+---------|
| 80486DX | Open | Open | Open | Open |
|---------------+-----------+-----------+----------+---------|
| SL80486DX | Open | 1 & 2 | Open | Open |
|---------------+-----------+-----------+----------+---------|
| CX486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|---------------+-----------+-----------+----------+---------|
| AM486DX2 | Open | Open | Open | Open |
|---------------+-----------+-----------+----------+---------|
| 80486DX2 | Open | Open | Open | Open |
|---------------+-----------+-----------+----------+---------|
| SL80486DX2 | Open | 1 & 2 | Open | Open |
|---------------+-----------+-----------+----------+---------|
| AM486DX4 | Open | Open | Open | Open |
|---------------+-----------+-----------+----------+---------|
| 80486DX4 | Open | 1 & 2 | Open | Open |
|---------------+-----------+-----------+----------+---------|
| P24D | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|---------------+-----------+-----------+----------+---------|
| P24T | 1 & 2 | 1 & 2 | Open | Open |
|---------------+-----------+-----------+----------+---------|
| CX M1 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP39 | JP40 | JP41 | JP42 |
|------------+--------+--------------+--------+--------------|
| CX486S | 1 & 2 | 3 & 4 | 1 & 2 | 2 & 3 |
|------------+--------+--------------+--------+--------------|
| 80486sx | Open | 1 & 2 | Open | 2 & 3 |
|------------+--------+--------------+--------+--------------|
| SL80486SX | 1 & 2 | 3 & 4 | Open | 2 & 3 |
|------------+--------+--------------+--------+--------------|
| CX486DX | 1 & 2 | 3 & 4 | 2 & 3 | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| AM486DX | Open | 1 & 2 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| UMC U5S | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 |
|------------+--------+--------------+--------+--------------|
| 80486DX | Open | 1 & 2 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| SL80486DX | 1 & 2 | 3 & 4 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| CX486DX2 | 1 & 2 | 3 & 4 | 2 & 3 | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| AM486DX2 | Open | 1 & 2 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| 80486DX2 | Open | 1 & 2 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| SL80486DX2 | 1 & 2 | 3 & 4 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| AM486DX4 | Open | 1 & 2 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| 80486DX4 | 1 & 2 | 3 & 4 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| P24D | 1 & 2 | 3 & 4 | Open | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| P24T | 1 & 2 | 3 & 4, 5 & 6 | 2 & 3 | 1 & 2, 3 & 4 |
|------------+--------+--------------+--------+--------------|
| CX M1 | 1 & 2 | 3 & 4 | Open | 1 & 2, 3 & 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP22 | JP23 |
|------------------+--------------------+--------------------|
| Cyrix | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| AMD | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| UMC | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Intel | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP7 | JP8 |
|---------------+--------------+--------------+--------------|
| 20MHz | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| 25MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Open | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 50iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | JP33 |
|----------------------------+-------------------------------|
| 2x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 2.5x | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CONFIGURATION |
|------------------------------------------------------------|
| Type | JP38 |
|------------------------------+-----------------------------|
| P24D write through | pins 1 & 2 closed |
|------------------------------+-----------------------------|
| P24D write back | pins 2 & 3 closed |
|------------------------------+-----------------------------|
| AMD CPU 2x | pins 1 & 2 closed |
|------------------------------+-----------------------------|
| AMD CPU 3x | Open |
|------------------------------+-----------------------------|
| Other CPU types | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
|Voltage | JP18 | JP19 | JP20 | JP49 | JP50 | JP51 | jp53 |
|--------+-------+------+------+-------+-------+------+------|
| 3.3v | 1 & 2 |1 & 2 |1 & 2 | Open | Open | Open |Closed|
|--------+-------+------+------+-------+-------+------+------|
| 3.45v | 1 & 2 |1 & 2 |1 & 2 |Closed | Open | Open | Open |
|--------+-------+------+------+-------+-------+------+------|
| 3.6v | 1 & 2 |1 & 2 |1 & 2 | Open |Closed | Open | Open |
|--------+-------+------+------+-------+-------+------+------|
| 4v | 1 & 2 |1 & 2 |1 & 2 | Open | Open |Closed| Open |
|--------+-------+------+------+-------+-------+------+------|
| 5v | 2 & 3 |2 & 3 |2 & 3 | Open | Open | Open | Open |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CONFIGURATION |
|------------------------------------------------------------|
| DMA | JP47 | JP48 |
|------------------+--------------------+--------------------|
| DMA 1 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DMA 3 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+