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# SANYO BUSINESS SYSTEMS CORPORATION
MBC-18SX
Processor 80386SX
Processor Speed 16MHz
Chip Set Zymos
Max. Onboard 2MB
DRAM
Cache None
BIOS Sanyo
Dimensions 332mm x 136mm
I/O Options Serial port, parallel port, floppy drive
interface, IDE interface
NPU Options 80387SX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+----------------+------------|
| Serial port | CN1 | Speaker & I/O | CN10 |
| | | LED | |
|-------------------+----------+----------------+------------|
| Parallel port | CN2 | Keylock | CN11 |
|-------------------+----------+----------------+------------|
| Floppy drive | CN3 | External | CN12 & |
| interface | | batteries | CN13 |
|-------------------+----------+----------------+------------|
| IDE interface | CN7 | Reset switch | SW1 |
|-------------------+----------+----------------+------------|
| Keyboard | CN9 | | |
| connector | | | |
|------------------------------------------------------------|
| Note:The purpose of connectors CN5 & CN8 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|--------------------------------+---------------+-----------|
| » | Serial port interrupt | JP1 | pins 2 & |
| | select primary | | 3 closed |
|---+----------------------------+---------------+-----------|
| | Serial port interrupt | JP1 | pins 1 & |
| | select secondary | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Parallel port interrupt | JP2 | pins 2 & |
| | select primary | | 3 closed |
|---+----------------------------+---------------+-----------|
| | Parallel port interrupt | JP2 | pins 1 & |
| | select secondary | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP3 | pins 1 & |
| | not alter | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP4 | Open |
| | not alter | | |
|---+----------------------------+---------------+-----------|
| » | IDE interface enabled | JP5 | pins 1 & |
| | | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | IDE interface disabled | JP5 | pins 2 & |
| | | | 3 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP6 | pins 2 & |
| | not alter | | 3 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP7 | Open |
| | not alter | | |
|---+----------------------------+---------------+-----------|
| » | Bus mouse address select | JP12 | pins 2 & |
| | primary | | 3 closed |
|---+----------------------------+---------------+-----------|
| | Bus mouse address select | JP12 | pins 1 & |
| | secondary | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP13 | pins 1 & |
| | not alter | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP14 | pins 1 & |
| | not alter | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP15 | pins 1 & |
| | not alter | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP16 | pins 1 & |
| | not alter | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP17 | pins 2 & |
| | not alter | | 3 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP18 | pins 2 & |
| | not alter | | 3 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | JP19 | pins 1 & |
| | not alter | | 2 closed |
|---+----------------------------+---------------+-----------|
| » | IDE interrupt select SLVAC | JP20 | pins 1 & |
| | disabled | | 2 closed |
|---+----------------------------+---------------+-----------|
| | IDE interrupt select SLVAC | JP20 | pins 2 & |
| | enabled | | 3 closed |
|---+----------------------------+---------------+-----------|
| » | Factory configured - do | DPS1/1 | Off |
| | not alter | | |
|---+----------------------------+---------------+-----------|
| » | Parallel port address | DPS1/2 | On |
| | select primary | | |
|---+----------------------------+---------------+-----------|
| | Parallel port address | DPS1/2 | Off |
| | select secondary | | |
|---+----------------------------+---------------+-----------|
| » | Serial port address select | DPS1/3 | On |
| | primary | | |
|---+----------------------------+---------------+-----------|
| | Serial port address select | DPS1/3 | Off |
| | secondary | | |
|---+----------------------------+---------------+-----------|
| » | Floppy drive interface | DPS1/4 | On |
| | address select primary | | |
|---+----------------------------+---------------+-----------|
| | Floppy drive interface | DPS1/4 | Off |
| | address select secondary | | |
|---+----------------------------+---------------+-----------|
| » | Monitor type select color | DPS1/5 | On |
|---+----------------------------+---------------+-----------|
| | Monitor type select | DPS1/5 | Off |
| | monochrome | | |
|---+----------------------------+---------------+-----------|
| » | CPU speed select fast | DPS1/6 | On |
|---+----------------------------+---------------+-----------|
| | CPU speed select slow | DPS1/6 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | P-0 | Bank 1 | P-1 |
|--------+------------+------------+------------+------------|
| 1MB | (8) 44256 | (4) 41256 | NONE | NONE |
|--------+------------+------------+------------+------------|
| 2MB | (8) 44256 | (4) 41256 | (8) 44256 | (4) 41256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MOUSE IRQ CONFIGURATION |
|------------------------------------------------------------|
| IRQ | JP8 | JP9 | JP10 | JP11 |
|----------+------------+------------+-----------+-----------|
| IRQ3 | Open | Open | Closed | Open |
|----------+------------+------------+-----------+-----------|
| IRQ4 | Open | Closed | Open | Open |
|----------+------------+------------+-----------+-----------|
| IRQ5 | Closed | Open | Open | Open |
|----------+------------+------------+-----------+-----------|
| IRQ9 | Open | Open | Open | Closed |
+------------------------------------------------------------+