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# NCR CORPORATION
MODEL 3332 DESKSIDE PC80486AT
Processor 80486SX/80487SX/80486DX/80486DX2
Processor Speed 16/20/25/33/50(internal)/66(internal)MHz
Chip Set Unidentified
Video Chip Set Unidentified
Maximum Onboard 64MB
Memory
Maximum Video 1MB
Memory
Cache 64/256KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interface,
parallel port, PS/2 mouse port, serial ports
(2), VGA port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| IDE interface LED | J1 | Serial port 2 | J26 |
|--------------------+----------+-----------------+----------|
| Keylock | J2 | Serial port 1 | J28 |
|--------------------+----------+-----------------+----------|
| Chassis fan power | J3 | Parallel port | J29 |
|--------------------+----------+-----------------+----------|
| Speaker | J7 | VGA port | J30 |
|--------------------+----------+-----------------+----------|
| Floppy drive | J16 | PS/2 mouse port | J31 |
| interface | | | |
|--------------------+----------+-----------------+----------|
| IDE interface | J17 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|------------------------------------+-------+---------------|
| » | Internal speaker enabled | J7 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| | Internal speaker disabled | J7 | Open |
|---+--------------------------------+-------+---------------|
| | External speaker connected | J7 | Pins 2 & 3 |
| | | | closed |
|---+--------------------------------+-------+---------------|
| » | On board video enabled | SW1/4 | Off |
|---+--------------------------------+-------+---------------|
| | On board video disabled | SW1/4 | On |
|---+--------------------------------+-------+---------------|
| » | Password enabled | SW1/5 | Off |
|---+--------------------------------+-------+---------------|
| | Password disabled | SW1/5 | On |
|---+--------------------------------+-------+---------------|
| » | Monitor type select color | SW1/6 | On |
|---+--------------------------------+-------+---------------|
| | Monitor type select monochrome | SW1/6 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------------------------------------------------------------|
| Note: The location of banks 0, 1, 2 & 3 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (2) 16K x 4 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (2) 16K x 4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size |SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7|SW2/8|
|------+------+------+------+------+------+------+-----+-----|
| None | Off | Off | Off | Off | Off | Off | Off | Off |
|------+------+------+------+------+------+------+-----+-----|
| 64KB | On | On | On | On | Off | Off | Off | Off |
|------+------+------+------+------+------+------+-----+-----|
|256KB | Off | Off | Off | Off | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Note: The location of the 1MB video memory is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | SW1/1 | SW1/2 | SW1/3 |
|---------------+--------------+--------------+--------------|
| 16MHz | On | On | Off |
|---------------+--------------+--------------+--------------|
| 20MHz | On | Off | On |
|---------------+--------------+--------------+--------------|
| 25MHz | Off | On | On |
|---------------+--------------+--------------+--------------|
| 33MHz | On | On | On |
|---------------+--------------+--------------+--------------|
| 50iMHz | Off | On | On |
|---------------+--------------+--------------+--------------|
| 66iMHz | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | SW1/7 |
|----------------------------------------+-------------------|
| 80487SX/80486DX/80486DX2 not installed | Off |
|----------------------------------------+-------------------|
| 80487SX/80486DX/80486DX2 installed | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | SW1/8 |
|-------------------------------+----------------------------|
| 80487SX | On |
|-------------------------------+----------------------------|
| 80486DX | Off |
|-------------------------------+----------------------------|
| 80486DX2 | Off |
+------------------------------------------------------------+