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# NORTHGATE COMPUTER SYSTEMS, INC.
SLIMLINE 320
Processor 80386DX
Processor Speed 20MHz
Chip Set C & T
Max. Onboard 8MB
DRAM
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interface,
parallel port, serial ports (2), VGA port
NPU Options 80387
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Reset switch | J2 | Floppy drive | J16 |
| | | interface | |
|----------------+----------+---------------------+----------|
| Turbo LED | J6 | IDE interface | J17 |
|----------------+----------+---------------------+----------|
| Power LED & | J8 | VGA port | J21 |
| keylock | | | |
|----------------+----------+---------------------+----------|
| Serial port 2 | J13 | IDE interface LED | J23 |
|----------------+----------+---------------------+----------|
| Serial port 1 | J14 | Riser card | R1 |
|----------------+----------+---------------------+----------|
| Parallel port | J15 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-----------------------------------+-----------+------------|
| » | Factory configured - do not | J1 | Closed |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | VGA onboard BIOS enabled | J3 | pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-----------+------------|
| | VGA onboard BIOS disabled | J3 | pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-----------+------------|
| » | VGA port enabled | J4 | Closed |
|---+-------------------------------+-----------+------------|
| | VGA port disabled | J4 | Open |
|---+-------------------------------+-----------+------------|
| » | CPU speed select switchable | J7 | Open |
| | at turbo switch (boot-up | | |
| | fast) | | |
|---+-------------------------------+-----------+------------|
| | CPU speed select slow | J7 | pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-----------+------------|
| | Monitor type select | J9 | pins 1 & 2 |
| | monochrome | | closed |
|---+-------------------------------+-----------+------------|
| | Monitor type select color | J9 | pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | J10 | N/A |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | J18 | Closed |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | J19 | Closed |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | J20 | Closed |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | J24 | Open |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW1 pins | N/A |
| | alter | 3 & 4 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW1 pins | N/A |
| | alter | 5 & 6 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW1 pins | N/A |
| | alter | 7 & 8 | |
|---+-------------------------------+-----------+------------|
| » | Serial port 1 enabled | SW3 pins | Open |
| | | 1 & 2 | |
|---+-------------------------------+-----------+------------|
| | Serial port 1 disabled | SW3 pins | Closed |
| | | 1 & 2 | |
|---+-------------------------------+-----------+------------|
| » | Serial port2 enabled | SW3 pins | Open |
| | | 3 & 4 | |
|---+-------------------------------+-----------+------------|
| | Serial port 2 disabled | SW3 pins | Closed |
| | | 3 & 4 | |
|---+-------------------------------+-----------+------------|
| » | Parallel port enabled | SW3 pins | Open |
| | | 5 & 6 | |
|---+-------------------------------+-----------+------------|
| | Parallel port disabled | SW3 pins | Closed |
| | | 5 & 6 | |
|---+-------------------------------+-----------+------------|
| » | Parallel port select LPT1 | SW3 pins | Open |
| | | 7 & 8 | |
|---+-------------------------------+-----------+------------|
| | Parallel port select LPT2 | SW3 pins | Closed |
| | | 7 & 8 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW4 pins | Closed |
| | alter | 1 & 2 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW4 pins | Closed |
| | alter | 3 & 4 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW4 pins | Closed |
| | alter | 5 & 6 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | SW4 pins | Closed |
| | alter | 7 & 8 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | W1 | Open |
| | alter | | |
|---+-------------------------------+-----------+------------|
| » | Floppy drive interface | W5 pins 1 | Open |
| | enabled | & 2 | |
|---+-------------------------------+-----------+------------|
| | Floppy drive interface | W5 pins 1 | Closed |
| | disabled | & 2 | |
|---+-------------------------------+-----------+------------|
| » | IDE interface enabled | W5 pins 3 | Open |
| | | & 4 | |
|---+-------------------------------+-----------+------------|
| | IDE interface disabled | W5 pins 3 | Closed |
| | | & 4 | |
|---+-------------------------------+-----------+------------|
| » | Floppy drive select 1-speed | W6 pins 1 | Open |
| | | & 2 | |
|---+-------------------------------+-----------+------------|
| | Floppy drive select 2-speed | W6 pins 1 | Closed |
| | 1.2MB 5.25" | & 2 | |
|---+-------------------------------+-----------+------------|
| » | Floppy drive write precomp | W6 pins 3 | Open |
| | select 125ns | & 4 | |
|---+-------------------------------+-----------+------------|
| | Floppy drive write precomp | W6 pins 3 | Closed |
| | select 187ns | & 4 | |
|---+-------------------------------+-----------+------------|
| » | Factory configured - do not | W8 | Open |
| | alter | | |
|------------------------------------------------------------|
| Note:The location of W1 is unidentifed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J11 | J12 | SW1 | SW2 |
|--------+---------+---------+---------+---------------------|
| 1MB | 2 & 3 | 2 & 3 | Open | Open |
|--------+---------+---------+---------+---------------------|
| 2MB | 2 & 3 | 2 & 3 | Open | 1 & 2 |
|--------+---------+---------+---------+---------------------|
| 4MB | 1 & 2 | 1 & 2 | 1 & 2 | 5 & 6, 7 & 8 |
|--------+---------+---------+---------+---------------------|
| 8MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2, 5 & 6, 7 & 8 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+