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# ADVANCED INTEGRATION RESEARCH, INC.
486MI REV. 1.11
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor 20/25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set SIS
Max. Onboard 64MB
DRAM
Cache 64/128/256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (3), floppy drive
interface, game port, IDE interface, parallel
port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| IDE port | CN1 | Green PC LED | J3 |
|---------------+----------+----------------------+----------|
| Floppy port | CN2 | Reset switch | J4 |
|---------------+----------+----------------------+----------|
| Parallel port | CN3 | Turbo switch | J5 |
|---------------+----------+----------------------+----------|
| Game port | CN4 | Turbo LED | J6 |
|---------------+----------+----------------------+----------|
| Serial port 1 | CN5 | IDE interface LED | J7 |
|---------------+----------+----------------------+----------|
| Serial port 2 | CN6 | 32-bit VESA Local | S1, S2 & |
| | | bus slots | S3 |
|---------------+----------+----------------------+----------|
| Speaker | J1 | Green PC connector | W1 |
|---------------+----------+----------------------+----------|
| Power LED & | J2 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP4 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select monochrome, | JP16 | Open |
| | VGA or EGA | | |
|---+----------------------------------+--------+------------|
| | Monitor type select CGA | JP16 | Closed |
|---+----------------------------------+--------+------------|
| » | Flash BIOS write protect enabled | JP17 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS write protect | JP17 | pins 2 & 3 |
| | disabled | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP20 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP20 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | JP29 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | JP29 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port select interrupt | JP30 | pins 1 & 2 |
| | IRQ7 | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port select interrupt | JP30 | pins 2 & 3 |
| | IRQ5 | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+---------------+-------------+------------+----------|
| 2MB | (1) 512K x 36 | None | None | None |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 512K x 36 | None | (1) 512K x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 4MB | (1) 1M x 36 | None | None | None |
|------+---------------+-------------+------------+----------|
| 6MB | (1) 512K x 36 | None | (1) 1M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
|------+---------------+-------------+------------+----------|
| 8MB | (1) 2M x 36 | None | None | None |
|------+---------------+-------------+------------+----------|
| 10MB | (1) 512K x 36 | None | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 10MB | (1) 512K x 36 | None | (1) 2M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 12MB | (1) 2M x 36 | None | (1) 1M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 2M x 36 | None | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 2M x 36 | None | (1) 2M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 16MB | (1) 4M x 36 | None | None | None |
|------+---------------+-------------+------------+----------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | None | None |
|------+---------------+-------------+------------+----------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 24MB | (1) 2M x 36 | None | (1) 4M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
|------+---------------+-------------+------------+----------|
| 32MB | (1) 8M x 36 | None | None | None |
|------+---------------+-------------+------------+----------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 2M x 36 | None | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 2M x 36 | None | (1) 8M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 48MB | (1) 8M x 36 | None | (1) 4M x | None |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 64MB | (1) 8M x 36 | None | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 64MB | (1) 8M x 36 | None | (1) 8M x | None |
| | | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP12 | JP13 | JP14 | JP15 |
|-------+--------+--------+--------+--------+--------+-------|
| 64KB | pins 1 | pins 1 | pins 1 | pins 2 | pins 1 | pins |
| | & 2 | & 2 | & 2 | & 3 | & 2 | 1 & 2 |
|-------+--------+--------+--------+--------+--------+-------|
| 128KB | pins 2 | pins 1 | pins 1 | pins 1 | pins 1 | pins |
| | & 3 | & 2 | & 2 | & 2 | & 2 | 2 & 3 |
|-------+--------+--------+--------+--------+--------+-------|
| 256KB | pins 2 | pins 2 | pins 1 | pins 2 | pins 2 | pins |
| | & 3 | & 3 | & 2 | & 3 | & 3 | 2 & 3 |
|-------+--------+--------+--------+--------+--------+-------|
| 256KB | pins 2 | pins 2 | pins 2 | pins 1 | pins 1 | pins |
| | & 3 | & 3 | & 3 | & 2 | & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SIZE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 |
|----------+-------------------+-----------------------------|
| 80486SX | Open | pins 2 & 3 closed |
|----------+-------------------+-----------------------------|
| 80486DX | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
|----------+-------------------+-----------------------------|
| 80487SX | pins 2 & 3 closed | pins 1 & 2 and 3 & 4 closed |
|----------+-------------------+-----------------------------|
| ODP486SX | pins 2 & 3 closed | pins 1 & 2 and 3 & 4 closed |
|----------+-------------------+-----------------------------|
| 80486DX2 | pins 1 & 2 closed | pins 1 & 2 and 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP6 | JP7 | JP26 | JP27 | JP28 |
|-------+--------+--------+--------+--------+--------+-------|
| 20MHz | Closed | Open | Open | pins 2 | pins 2 | pins |
| | | | | & 3 | & 3 | 1 & 2 |
|-------+--------+--------+--------+--------+--------+-------|
| 25MHz | Open | Closed | Closed | pins 2 | pins 2 | pins |
| | | | | & 3 | & 3 | 1 & 2 |
|-------+--------+--------+--------+--------+--------+-------|
| 33MHz | Open | Closed | Open | pins 2 | pins 2 | pins |
| | | | | & 3 | & 3 | 1 & 2 |
|-------+--------+--------+--------+--------+--------+-------|
| 40MHz | Open | Open | Closed | pins 1 | pins 1 | pins |
| | | | | & 2 | & 2 | 2 & 3 |
|-------+--------+--------+--------+--------+--------+-------|
| 50i | Open | Closed | Closed | pins 2 | pins 2 | pins |
| MHz | | | | & 3 | & 3 | 1 & 2 |
|-------+--------+--------+--------+--------+--------+-------|
| 50MHz | Open | Open | Open | pins 1 | pins 1 | pins |
| | | | | & 2 | & 2 | 2 & 3 |
|-------+--------+--------+--------+--------+--------+-------|
| 66i | Open | Closed | Open | pins 2 | pins 2 | pins |
| MHz | | | | & 3 | & 3 | 1 & 2 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE RECOVERY TIME |
|------------------------------------------------------------|
| Speed | Recovery | JP22 | JP23 | JP24 |
| | Time | | | |
|--------+------------+--------------+----------+------------|
| <33mhz | 9T, low | pins 2 & 3 | pins 1 & | pins 2 & 3 |
| | speed | closed | 2 closed | closed |
|--------+------------+--------------+----------+------------|
| <33mhz | 7T, middle | pins 1 & 2 | pins 2 & | pins 2 & 3 |
| | speed | closed | 3 closed | closed |
|--------+------------+--------------+----------+------------|
| <33mhz | 5T, high | pins 2 & 3 | pins 2 & | pins 2 & 3 |
| | speed | closed | 3 closed | closed |
|--------+------------+--------------+----------+------------|
| >40mhz | 13T, low | pins 2 & 3 | pins 2 & | pins 1 & 2 |
| | speed | closed | 3 closed | closed |
|--------+------------+--------------+----------+------------|
| >40mhz | 11T middle | pins 1 & 2 | pins 1 & | pins 2 & 3 |
| | speed | closed | 2 closed | closed |
|--------+------------+--------------+----------+------------|
| >40mhz | 9T high | pins 2 & 3 | pins 1 & | pins 2 & 3 |
| | speed | closed | 2 closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE/BUS SPEED (ID2 & ID3) CONFIGURATION |
|------------------------------------------------------------|
| Speed | Setting | ID2 | ID3 |
|----------+----------------+-----------------+--------------|
| <=33MHz | 0 wait states | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|----------+----------------+-----------------+--------------|
| >33MHz | 1 wait state | pins 2 & 3 | pins 2 & 3 |
| | | closed | closed |
+------------------------------------------------------------+