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# ITT CORPORATION
XTRA/PROFESSIONAL SERIES 400
Processor 80286
Processor Speed 6/10MHz
Chip Set Unidentified
Max. Onboard DRAM 1MB (exact location unidentified)
Cache None
BIOS Unidentified
Dimensions 355mm x 305mm
I/O Options Floppy drive interface
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location |
|-------------------------------+----------------------------|
| Floppy drive interface | CN1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP6 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | JP7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | JP7 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive address select 37X | JP8 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive address select 3FX | JP8 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Hard drive controller installed | JP9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Hard drive controller not | JP9 | pins 2 & 3 |
| | installed | | closed |
|---+----------------------------------+--------+------------|
| » | Power on wait state select 1 | JP10 | pins 1 & 2 |
| | wait states | | closed |
|---+----------------------------------+--------+------------|
| | Power on wait state select 0 | JP10 | pins 2 & 3 |
| | wait state | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size |
|------------------------------------------------------------|
| 256KB |
|------------------------------------------------------------|
| 512KB |
|------------------------------------------------------------|
| 640KB |
|------------------------------------------------------------|
| 1MB |
|------------------------------------------------------------|
| Note:The chip size and location of the memory is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 | JP5 |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 512KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 640KB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1MB | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU POWER UP SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP3 |
|----------------------------+-------------------------------|
| 6MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 10MHz | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 |
|------------------+--------------------+--------------------|
| EPROM | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Masked ROM | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+