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# ZEOS INTERNATIONAL, LTD.
386SX-16
Processor 80386SX
Processor Speed 16MHz
Chip Set Unidentified
Max. Onboard DRAM 4MB
Cache None
BIOS Award
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J2 | Turbo LED | J30 |
|------------------+----------+-------------------+----------|
| Turbo switch | J28 | Power LED & | J31 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| Reset switch | J29 | Speaker | J38 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Parity checking enabled | J13 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parity checking disabled | J13 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J20 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | BIOS type select 27256 | J21 | Closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 27128 | J21 | Open |
|---+----------------------------------+--------+------------|
| » | ROM wait state select 3 wait | J22 | Open |
| | states | | |
|---+----------------------------------+--------+------------|
| | ROM wait state select 2 wait | J22 | Closed |
| | states | | |
|---+----------------------------------+--------+------------|
| » | RAM read wait state select 1 | J23 | Open |
| | wait state | | |
|---+----------------------------------+--------+------------|
| | RAM read wait state select 0 | J23 | Closed |
| | wait state | | |
|---+----------------------------------+--------+------------|
| » | RAM write wait state select 1 | J25 | Open |
| | wait state | | |
|---+----------------------------------+--------+------------|
| | RAM write wait state select 0 | J25 | Closed |
| | wait state | | |
|---+----------------------------------+--------+------------|
| » | Turbo switch select jumper | J32 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Turbo switch select keyboard | J32 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | ROM to RAM mapping disabled | J33 | Closed |
|---+----------------------------------+--------+------------|
| | ROM to RAM mapping enabled | J33 | Open |
|---+----------------------------------+--------+------------|
| » | Monitor type select CGA | J37 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select Mono/EGA/VGA | J37 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 512KB | (18) 41256 | NONE |
|------------------+--------------------+--------------------|
| 1MB | (18) 41256 | (18) 41256 |
|------------------+--------------------+--------------------|
| 2MB | (18) 411000 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (18) 411000 | (18) 411000 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J34 | J35 | J36 |
|--------------+---------------+--------------+--------------|
| 512KB | Closed | Closed | Open |
|--------------+---------------+--------------+--------------|
| 1MB | Closed | Open | Closed |
|--------------+---------------+--------------+--------------|
| 2MB | Open | Closed | Open |
|--------------+---------------+--------------+--------------|
| 4MB | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PAGEMODE CONFIGURATION |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | Interleave disabled | J24 | Open |
|---+------------------------------------+--------+----------|
| | Interleave enabled (requires both | J24 | Closed |
| | memory banks full) | | |
|---+------------------------------------+--------+----------|
| » | Pagemode disabled | J26 | Open |
|---+------------------------------------+--------+----------|
| | Pagemode enabled | J26 | Closed |
|---+------------------------------------+--------+----------|
| » | Pagemode controller installed | J27 | Open |
|---+------------------------------------+--------+----------|
| | Pagemode controller not installed | J27 | Closed |
|------------------------------------------------------------|
| Note: J23 & J25 must be open to operate in pagemode. |
+------------------------------------------------------------+