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# CSS LABORATORIES, INC.
MAXSYS 486MTE/VL
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/50/66(internal)MHz
Speed
Chip Set OPTI
Max. Onboard 256MB (128MB on CPU module)
DRAM
Cache 64/128/256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options CPU module slot, 32-bit VESA local bus slot (1),
floppy drive interface, IDE interface, parallel
port, serial ports (2)
NPU Options 4167
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Speaker | J4 | Serial port 2 | PJ4 |
|------------------+----------+-------------------+----------|
| Power LED & | J5 | IDE interface | PJ5 |
| keylock | | | |
|------------------+----------+-------------------+----------|
| IDE interface | J38 | Parallel port | PJ2A |
| LED | | (alternate) | |
|------------------+----------+-------------------+----------|
| Equipment panel | J39 | Serial port 1 | PJ3A |
| connector | | (alternate) | |
|------------------+----------+-------------------+----------|
| IDE interface | J40 | Serial port 2 | PJ4A |
| LED | | (alternate) | |
|------------------+----------+-------------------+----------|
| Turbo LED/reset | J41 | Keyboard | J11A |
| switch | | connector | |
| | | (alternate) | |
|------------------+----------+-------------------+----------|
| Floppy drive | PJ1 | Keyboard | J11B |
| interface | | connector | |
| | | (alternate) | |
|------------------+----------+-------------------+----------|
| Parallel port | PJ2 | CPU module slot | SL1 |
|------------------+----------+-------------------+----------|
| Serial port 1 | PJ3 | 32-bit VESA Local | SL2 |
| | | bus slot | |
|------------------------------------------------------------|
| Note: The keyboard, parallel and serial connections marked |
| "alternate" are used for easier placement of cables. Do |
| not use a primary and an alternate connection jointly. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | On board floppy controller | J1 | pins 2 & 3 |
| | enabled | | closed |
|---+----------------------------------+--------+------------|
| | On board floppy controller | J1 | pins 1 & 2 |
| | disabled | | closed |
|---+----------------------------------+--------+------------|
| » | On board IDE controller enabled | J2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On board IDE controller disabled | J2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CPU bus clock select synchronous | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CPU bus clock select | JP1 | pins 2 & 3 |
| | asynchronous | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP9 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Factory configured - do not | JP20 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 1 | PJ6 | S0 | S1 |
|-----------+----------------+---------------+---------------|
| Disabled | N/A | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|-----------+----------------+---------------+---------------|
| COM1 IRQ4 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| COM2 IRQ3 | pins 1 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port 2 | PJ6 | S2 | S3 |
|-----------+----------------+---------------+---------------|
| Disabled | N/A | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|-----------+----------------+---------------+---------------|
| COM1 IRQ4 | pins 2 & 4 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| COM2 IRQ3 | pins 3 & 4 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Port | P0 | P1 | PRT |
|-------------+---------------+---------------+--------------|
| Disabled | pins 1 & 2 | pins 1 & 2 | N/A |
| | closed | closed | |
|-------------+---------------+---------------+--------------|
| LPT 1 IRQ7 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|-------------+---------------+---------------+--------------|
| LPT 2 IRQ5 | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|-------------+---------------+---------------+--------------|
| LPT 3 IRQ 7 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 24MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 24MB | (4) 1M x 9 | (4) 4M x 9 | (4) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 28MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 28MB | (4) 1M x 9 | (4) 4M x 9 | (4) 1M x 9 | (4) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 36MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 36MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 40MB | (4) 1M x 9 | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 |
|-------+-------------+------------+------------+------------|
| 40MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 40MB | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 | (4) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 48MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | NONE |
|-------+-------------+------------+------------+------------|
| 52MB | (4) 1M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
|-------+-------------+------------+------------+------------|
| 52MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 | (4) 4M x 9 |
|-------+-------------+------------+------------+------------|
| 64MB | (4) 16M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 128MB | (4) 16M x 9 | (4) 16M x | NONE | NONE |
| | | 9 | | |
|-------+-------------+------------+------------+------------|
| 196MB | (4) 16M x 9 | (4) 16M x | (4) 16M x | NONE |
| | | 9 | 9 | |
|-------+-------------+------------+------------+------------|
| 256MB | (4) 16M x 9 | (4) 16M x | (4) 16M x | (4) 16M x |
| | | 9 | 9 | 9 |
|------------------------------------------------------------|
| Note: Banks 2 & 3 are located on the CPU module board. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP6 | JP7 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 33MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 50MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 66iMHz | Open | Closed |
+------------------------------------------------------------+
(IMG) IMG 2
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|---------------------------------------+---------+----------|
| » | Factory configured - do not alter | JP8 | Open |
|---+-----------------------------------+---------+----------|
| » | Factory configured - do not alter | JP77 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Memory | JP20 | JP21 |
|-------------------+--------------------+-------------------|
| 384KB | pins 2 & 3 closed | Open |
|-------------------+--------------------+-------------------|
| 512KB | pins 2 & 3 closed | Closed |
|-------------------+--------------------+-------------------|
| 640KB | pins 1 & 2 closed | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 16K x 8 | (4) 16K x 8 |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (4) 64K x 8 | (4) 64K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION (TAG) |
|------------------------------------------------------------|
| Size | U55 | U56 | U72 |
|-------+-------------+------------+-------------------------|
| 64KB | (1) 8K x 8 | NONE | (1) 16K x 1 or (1) 64K |
| | | | x 1 |
|-------+-------------+------------+-------------------------|
| 128KB | (1) 8K x 8 | NONE | (1) 16K x 1 or (1) 64K |
| | | | x 1 |
|-------+-------------+------------+-------------------------|
| 256KB | (1) 8K x 8 | (1) 8K x 8 | (1) 16K x 1 or (1) 64K |
| | | | x 1 |
|-------+-------------+------------+-------------------------|
| 512KB | (1) 32K x 8 | NONE | (1) 64K x 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP3 | JP4 | JP5 | JP16 | JP17 | JP18 |
|-------+-------+-------+-------+-------+------+------+------|
| 64KB | 2 & 3 | Open | Open | Open | Open | Open | Open |
|-------+-------+-------+-------+-------+------+------+------|
| 128KB | 1 & 2 |Closed | Open | Open |Closed| Open | Open |
|-------+-------+-------+-------+-------+------+------+------|
| 256KB | 2 & 3 |Closed |Closed | Open |Closed|Closed| Open |
|-------+-------+-------+-------+-------+------+------+------|
| 512KB | 1 & 2 |Closed |Closed |Closed |Closed|Closed|Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP12 |
|----------------------------+-------------------------------|
| 25MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 33MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 50iMHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 50MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 66iMHz | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP10 | JP11 |
|-------------+--------------------------+-------------------|
| 80486SX | pins 2 & 3 closed | Open |
|-------------+--------------------------+-------------------|
| 80487SX | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
|-------------+--------------------------+-------------------|
| 80486DX/DX2 | pins 1 & 2, 3 & 4 closed | pins 2 & 3 closed |
|-------------+--------------------------+-------------------|
| Overdrive | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
+------------------------------------------------------------+