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# INTEL CORPORATION
SYSTEM 302
Processor 80386DX
Processor Speed 25MHz
Chip Set Intel
Max. Onboard 8MB
DRAM
Cache 64KB
BIOS Phoenix
Dimensions 355mm x 304mm
I/O OPTIONS 32-bit external memory card slot (2),
parallel port, serial port (2)
NPU Options 80387
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+-----------+------------------+----------|
| Parallel port | J10A | Speaker | J19 |
|------------------+-----------+------------------+----------|
| Serial port 9 | J10B | Power LED & | J20 |
| pin (COM1 & | | Keylock | |
| COM2) | | | |
|------------------+-----------+------------------+----------|
| Serial port 25 | J10C | Memory expansion | S1 |
| pin (COM2) | | slot | |
|------------------+-----------+------------------+----------|
| Reset switch | J18 | Memory expansion | S2 |
| (not used) | | slot | |
|------------------------------------------------------------|
| Note: J10B connects to two DB9 RS-232 connectors, J10C |
| connects to one DB25 RS-232 connector. |
| |
| COM2 is active on both J10B and J10C, but only one may be |
| used at a time for COM2. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumpered Pins |
|-------------------------------------+----------------------|
| » | DRAM speed (100ns) | E1 - E2, E4 - E5 |
| | | closed |
|---+---------------------------------+----------------------|
| » | SIMM size select 256K x 9 | E7 - E8, E10 - E11 |
| | | closed |
|---+---------------------------------+----------------------|
| | SIMM size select 1M x 9 | E8 - E9, E11 - E12 |
| | | closed |
|---+---------------------------------+----------------------|
| » | Parallel printer port select | E13 - E14, E20 - E21 |
| | LPT1 | closed |
|---+---------------------------------+----------------------|
| | Parallel printer port select | E14 - E15, E19 - E20 |
| | LPT2 | closed |
|---+---------------------------------+----------------------|
| » | Printer acknowledge trailing | E17 - E18 closed |
| | edge | |
|---+---------------------------------+----------------------|
| | Printer acknowledge leading | E16 - E17 closed |
| | edge | |
|---+---------------------------------+----------------------|
| » | Serial port, (COM1) enabled | E22 - E23 closed |
|---+---------------------------------+----------------------|
| | Serial port, (COM1) disabled | E23 - E24 closed |
|---+---------------------------------+----------------------|
| » | Serial port, (COM2) enabled | E25 - E26 closed |
|---+---------------------------------+----------------------|
| | Serial port, (COM2) disabled | E26 - E27 closed |
|---+---------------------------------+----------------------|
| » | NPU disabled | E29 - E30 closed |
|---+---------------------------------+----------------------|
| | NPU enabled | E28 - E29 closed |
|---+---------------------------------+----------------------|
| » | Keyboard reset disabled | E35 - E36 closed |
|---+---------------------------------+----------------------|
| | Keyboard reset enabled | E34 - E35 closed |
|---+---------------------------------+----------------------|
| » | UNIX mode disabled | E38 - E39 closed |
|---+---------------------------------+----------------------|
| | UNIX mode enabled | E37 - E38 closed |
|---+---------------------------------+----------------------|
| » | Monitor type select color | E41 - E42 closed |
|---+---------------------------------+----------------------|
| | Monitor type select monochrome | E40 - E41 closed |
|---+---------------------------------+----------------------|
| » | Factory configured - do not | E49 - E50 closed |
| | alter | |
|---+---------------------------------+----------------------|
| | SIMM type standard RAS/CAS | E53 - E54, E55 - E56 |
| | | open |
|---+---------------------------------+----------------------|
| | SIMM type static-column | E53 - E54, E55 - E56 |
| | | closed |
|---+---------------------------------+----------------------|
| | SIMM type fast page mode | E53 - E54, E55 - E56 |
| | | closed |
|---+---------------------------------+----------------------|
| » | BIOS type 27256 | E57 - E58 closed |
|---+---------------------------------+----------------------|
| | BIOS type 27512 | E58 - E59 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | Jumpers |
|----------------------------+-------------------------------|
| 1MB | E60 - E62, E61 - E63 open |
|----------------------------+-------------------------------|
| 2MB | E60 - E62, E61 - E63 closed |
|----------------------------+-------------------------------|
| 4MB | E60 - E62, E61 - E63 open |
|----------------------------+-------------------------------|
| 8MB | E60 - E62, E61 - E63 closed |
+------------------------------------------------------------+