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# ADVANCED INTEGRATION RESEARCH, INC.
486MI REV. 2.2
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX4/Pentium
Overdrive
Processor 8/10/12/16/20/25/33/40I/40/50(internal)/60/66(internal)/66MHz
Speed
Chip Set SIS
Max. 64MB
Onboard
DRAM
Cache 64/128/256/512KB
BIOS AMI
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (3), floppy drive interfaces (2),
Options green PC connector, IDE interface, parallel port, serial
ports (2)
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Serial port 1 | CN1 | Reset switch | J2 |
|----------------+----------+---------------------+----------|
| Serial port 2 | CN2 | Turbo switch | J3 |
|----------------+----------+---------------------+----------|
| Parallel port | CN3 | Turbo LED | J4 |
|----------------+----------+---------------------+----------|
| IDE interface | CN4 | Speaker | J5 |
|----------------+----------+---------------------+----------|
| Floppy drive | CN5 | IDE interface LED | J6 |
| interface 1 | | | |
|----------------+----------+---------------------+----------|
| Floppy drive | CN6 | Power LED & keylock | J7 |
| interface 2 | | | |
|----------------+----------+---------------------+----------|
| Green PC | J1 | 32-bit VESA local | SL1 - |
| connector | | bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | pins 1 & 2 |
| | alter | | 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 |
|---+----------------------------------+--------+------------|
| » | VESA IDE interface enabled | JP22 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | VESA IDE interface disabled | JP22 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP28 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP29 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Parallel port IRQ select IRQ7 | JP30 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel port IRQ select IRQ5 | JP30 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | System wake up IRQ select IRQ4 | JP31 | pins 1 & 2 |
| | (COM1 & COM2) | | closed |
|---+----------------------------------+--------+------------|
| | System wake up IRQ select IRQ3 | JP31 | pins 2 & 3 |
| | (COM2 & COM4) | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP37 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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) 4M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 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 | |
|------+---------------+-------------+------------+----------|
| 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) 8M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 2M x 36 | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 2M x 36 | (1) 8M x 36 | NONE | NONE |
|------+---------------+-------------+------------+----------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+---------------+-------------+------------+----------|
| 48MB | (1) 8M x 36 | NONE | (1) 4M x | NONE |
| | | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (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 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP12 | JP13 | JP14 | JP15 |
|--------+--------+--------+--------+--------+-------+-------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|--------+--------+--------+--------+--------+-------+-------|
| 128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 256KB | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|--------+--------+--------+--------+--------+-------+-------|
| 512KB | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP38 |
|--------------+------------+-------------------+------------|
| 80486SX | Open | pins 2 & 3 closed | pins 1 & 2 |
| | | | closed |
|--------------+------------+-------------------+------------|
| 80487SX | pins 2 & 3 | pins 1 & 2, 3 & 4 | pins 1 & 2 |
| | closed | closed | closed |
|--------------+------------+-------------------+------------|
| ODP486SX | pins 2 & 3 | pins 1 & 2, 3 & 4 | pins 1 & 2 |
| | closed | closed | closed |
|--------------+------------+-------------------+------------|
| 80486DX/DX2 | pins 1 & 2 | pins 1 & 2, 3 & 4 | pins 1 & 2 |
| | closed | closed | closed |
|--------------+------------+-------------------+------------|
| 80486DX4 | pins 1 & 2 | pins 1 & 2, 3 & 4 | Open |
| | closed | closed | |
|--------------+------------+-------------------+------------|
| Pentium | pins 2 & 3 | pins 1 & 2, 3 & 4 | pins 1 & 2 |
| Overdrive | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | External clock speed | Internal clock | JP3 |
| | | speed | |
|-------+----------------------+----------------+------------|
| 3x | 25/33MHz | 75/100MHz | Open |
|-------+----------------------+----------------+------------|
| 2.5x | 33MHz | 83MHz | pins 2 & 3 |
| | | | closed |
|-------+----------------------+----------------+------------|
| 2x | 50MHz | 100MHz | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP5 | JP6 | JP7 | ID3 |
|----------+---------+---------+---------+-------------------|
| 25MHz | Closed | Closed | Closed | pins 1 & 2 closed |
|----------+---------+---------+---------+-------------------|
| 33MHz | Closed | Closed | Open | pins 1 & 2 closed |
|----------+---------+---------+---------+-------------------|
| 40MHz | Closed | Open | Closed | pins 2 & 3 closed |
|----------+---------+---------+---------+-------------------|
| 50iMHz | Closed | Closed | Closed | pins 1 & 2 closed |
|----------+---------+---------+---------+-------------------|
| 50MHz | Closed | Open | Open | pins 2 & 3 closed |
|----------+---------+---------+---------+-------------------|
| 66iMHz | Closed | Closed | Open | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | W1 |
|----------------------------+-------------------------------|
| 3.3v | pins 1 & 3, 2 & 4 closed |
|----------------------------+-------------------------------|
| 5v | pins 3 & 5, 4 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | ID2 |
|----------------------------+-------------------------------|
| 0 wait states | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP23 | JP24 |
|------------------+--------------------+--------------------|
| 0 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 2 | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 4 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 6 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECP MODE CONFIGURATION |
|------------------------------------------------------------|
| Setting | Mode | JP25 | JP26 | JP27 |
|----------+----------------------+--------+--------+--------|
| Enabled | ECP mode disabled | Open | Open | 2 & 3 |
| | for parallel port | | | |
|----------+----------------------+--------+--------+--------|
| Disabled | ECP mode enabled | 1 & 2 | 1 & 2 | 1 & 2 |
| | (DMA 3 used) | | | |
|----------+----------------------+--------+--------+--------|
| Disabled | ECP mode enabled | 2 & 3 | 2 & 3 | 1 & 2 |
| | (DMA 1 used) | | | |
|------------------------------------------------------------|
| Note: If setting is enabled- 4 floppy drives are |
| used. Pins designated should be in the closed |
| position. |
+------------------------------------------------------------+