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# INTERLOGIC INDUSTRIES
SC486DX
Processor 80486DX
Processor Speed 33MHz
Chip Set OPTI
Max. Onboard 32MB
DRAM
Cache 64/256KB
BIOS Award
Dimensions 350mm x 125mm
I/O Options Bus mouse port, floppy drive interface, IDE
interface, parallel port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Auxiliary | CN1 | IDE interface | CN9 |
| keyboard | | | |
|-------------------+----------+------------------+----------|
| Power LED & | CN2 | Parallel port | CN10 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | CN3 | External battery | CN11 |
|-------------------+----------+------------------+----------|
| Reset switch | CN4 | Serial port 1 | CN12 |
|-------------------+----------+------------------+----------|
| IDE interface LED | CN5 | Bus mouse port | CN13 |
|-------------------+----------+------------------+----------|
| Turbo switch | CN6 | Serial port 2 | CN14 |
|-------------------+----------+------------------+----------|
| Turbo LED | CN7 | Floppy drive | LED |
| | | interface LED | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN8 | | |
| interface | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Bus speed select ATCLK/4 (5.5 | JP1 | Closed |
| | MHz) | | |
|---+----------------------------------+--------+------------|
| | Bus speed select ATCLK/6 (8.5 | JP1 | Open |
| | MHz) | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP5 | pins 2 & 3 |
| | alter (selects iOSC/2) | | closed |
|---+----------------------------------+--------+------------|
| » | Watchdog Timer mode select | JP9 | pins 1 & 2 |
| | system reset after time-out | | closed |
|---+----------------------------------+--------+------------|
| | Watchdog Timer mode select low | JP9 | pins 2 & 3 |
| | IOCHK# NMI after time-out | | closed |
|---+----------------------------------+--------+------------|
| | Watchdog Timer mode select | JP9 | Open |
| | disabled | | |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | JP10 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | JP10 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Hard drive controller enabled or | JP11 | pins 2 & 3 |
| | installed | | closed |
|---+----------------------------------+--------+------------|
| | Hard drive access disabled | JP11 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | JP12 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | JP12 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Bus mouse interrupt select IRQ5 | JP13 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Bus mouse interrupt select IRQ4 | JP13 | pins 3 & 4 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Bus mouse interrupt select IRQ3 | JP13 | pins 5 & 6 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Bus mouse interrupt select IRQ9 | JP13 | pins 7 & 8 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Bus mouse interrupt select none | JP13 | Open |
| | (disabled) | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP14 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP14 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 1 select COM1 (I/O | JP15 | pins 1 & 2 |
| | address 3F8-3FFh) | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 1 select COM3 (I/O | JP15 | pins 2 & 3 |
| | address 3E8-3EFh) | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 1 enabled | JP16 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 1 disabled | JP16 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port enabled | JP17 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port disabled | JP17 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 2 enabled | JP18 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 2 disabled | JP18 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 2 select COM2 (I/O | JP19 | pins 1 & 2 |
| | address 2F8-2FFh) | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 2 select COM4 (I/O | JP19 | pins 2 & 3 |
| | address 2E8-2EFh) | | closed |
|---+----------------------------------+--------+------------|
| » | Bus mouse port enabled | JP20 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Bus mouse port disabled | JP20 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 2 interrupt select | JP21 | pins 1 & 2 |
| | IRQ3 | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 2 interrupt select | JP21 | pins 2 & 3 |
| | IRQ4 | | closed |
|---+----------------------------------+--------+------------|
| » | Serial port 1 interrupt select | JP22 | pins 1 & 2 |
| | IRQ4 | | closed |
|---+----------------------------------+--------+------------|
| | Serial port 1 interrupt select | JP22 | pins 2 & 3 |
| | IRQ3 | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port interrupt select | JP23 | pins 1 & 2 |
| | IRQ7 (LPT1) | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port interrupt select | JP23 | pins 2 & 3 |
| | IRQ5 (LPT2) | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port select LPT1 (I/O | JP24 | pins 1 & 2 |
| | address 378-37Fh) | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port select LPT2 (I/O | JP24 | pins 2 & 3 |
| | address 278-27Fh) | | closed |
|---+----------------------------------+--------+------------|
| » | Watchdog Timer interval select | JP25 | Closed |
| | 500ms | | |
|---+----------------------------------+--------+------------|
| | Watchdog Timer interval select 1 | JP25 | Open |
| | second | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP26 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP26 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG (U31) |
|---------------+-----------------------+--------------------|
| 64KB | (8) 8K x 8 | (1) 8K x 8 |
|---------------+-----------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 32K x 8 |
|------------------------------------------------------------|
| Note:The location of the TAG is unidentified and may not |
| be present on some revisions. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP3 | JP4 |
|--------------+---------------+--------------+--------------|
| 64KB | Open | Open | Open |
|--------------+---------------+--------------+--------------|
| 256KB | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP6 | JP7 | JP8 |
|----------+---------+-------------------+-------------------|
| 80486SX | Open | N/A | pins 2 & 3 closed |
|----------+---------+-------------------+-------------------|
| 80487SX | Closed | pins 2 & 3 closed | pins 1 & 2 closed |
|----------+---------+-------------------+-------------------|
| 80486DX | Closed | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+