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# MICRONICS COMPUTERS, INC.
M4LI (REV. 3A)
Processor AM486SX/80486SX/AM486SX2/80486SX2/SL AM486DX/CX486DX/
CX486DX2/80486DX/80486DX2/SL80486DX2/AM486DX4/80486DX4/Pentium Overdrive
Processor 25/33/40(internal)/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set SIS
Max. 128MB
Onboard
DRAM
Cache 128/256KB
BIOS Phoenix
Dimensions 241mm x 218mm
I/O PS/2 mouse port, PS/2 mouse interface, parallel port, serial port (2),
Options 32-bit PCI slots (4), floppy drive interface, IDE interfaces (2)
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN1 | IDE interface 2 | J25 |
|-------------------+----------+------------------+----------|
| Turbo switch | J2 | Speaker | J31 |
|-------------------+----------+------------------+----------|
| Turbo LED | J3 | Floppy drive | J36 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Power LED & | J9 | Serial port 1 | J37 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| PS/2 mouse | J10 | Serial port 2 | J38 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J20 | Parallel port | J39 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J21 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Reset switch | J23 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | J22 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W19 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | PCI clock speed select CPU clock | W20 | pins 1 & 2 |
| | speed | | closed |
|---+----------------------------------+--------+------------|
| | PCI clock speed select ½ CPU | W20 | pins 2 & 3 |
| | clock speed | | closed |
|---+----------------------------------+--------+------------|
| » | PS/2 mouse type select PS/2 | W33 | Closed |
| | version | | |
|---+----------------------------------+--------+------------|
| | PS/2 mouse type select AT | W33 | Open |
| | version | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W38 | pins 2 & 3 |
| | alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 8M x 36 | (1) 8M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 8M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-------------+---------------+---------------+--------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|-------------+---------------+---------------+--------------|
| 256KB (B) | (4) 64K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W23 | W34 | W35 | W36 |
|-------------+----------+---------+---------------+---------|
| None | Open | Open | Open | Open |
|-------------+----------+---------+---------------+---------|
| 128KB | Open | 1 & 2 | 1 & 2, 4 & 5 | 1 & 2 |
|-------------+----------+---------+---------------+---------|
| 256KB (A) | Closed | 2 & 3 | 2 & 3, 4 & 5 | 2 & 3 |
|-------------+----------+---------+---------------+---------|
| 256KB (B) | Closed | 1 & 2 | 1 & 2, 3 & 4 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | W8 |
|---------------+--------------------------------------------|
| AM486SX | 12 & 13, 15 & 16, 37 & 38, 42 & 43 |
|---------------+--------------------------------------------|
| 80486SX | 3 & 4, 12 & 13, 15 & 16, 19 & 20, 21 & 22, |
| | 26 & 27, 37 & 38, 42 & 43 |
|---------------+--------------------------------------------|
| AM486SX2 | 12 & 13, 15 & 16, 37 & 38, 42 & 43 |
|---------------+--------------------------------------------|
| 80486SX2 | 3 & 4, 12 & 13, 15 & 16, 19 & 20, 21 & 22, |
| | 26 & 27, 37 & 38, 42 & 43 |
|---------------+--------------------------------------------|
| SL AM486DX | 1 & 2, 3 & 4, 8 & 9, 11 & 12, 13 & 14, 15 |
| | & 16, 19 & 20, 21 & 22, |
| | |
| | 26 & 27, 29 & 30, 33 & 34, 36 & 37, 40 & |
| | 41, 42 & 43 |
|---------------+--------------------------------------------|
| CX486DX | 2 & 3, 6 & 7, 9 & 10, 11 & 12, 13 & 14, 15 |
| | & 16, 18 & 19, 21 & 22, |
| | |
| | 24 & 25, 37 & 38, 40 & 41 |
|---------------+--------------------------------------------|
| 80486DX | 3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20, |
| | 21 & 22, 26 & 27, |
| | |
| | 37 & 38, 40 & 41, 42 & 43 |
|---------------+--------------------------------------------|
| CX486DX2 | 2 & 3, 6 & 7, 9 & 10, 11 & 12, 13 & 14, 15 |
| | & 16, 18 & 19, 21 & 22, |
| | |
| | 24 & 25, 37 & 38, 40 & 41 |
|---------------+--------------------------------------------|
| 80486DX2 (WB) | 1 & 2, 3 & 4, 8 & 9, 11 & 12, 13 & 14, 15 |
| | & 16, 19 & 20, 21 & 22, |
| | |
| | 26 & 27, 29 & 30, 33 & 34, 36 & 37, 40 & |
| | 41, 42 & 43 |
|---------------+--------------------------------------------|
| 80486DX2 | 3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20, |
| | 21 & 22, 26 & 27, |
| | |
| | 37 & 38, 40 & 41, 42 & 43 |
|---------------+--------------------------------------------|
| AM486DX4 | 3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20, |
| | 21 & 22, 26 & 27, |
| | |
| | 37 & 38, 40 & 41, 42 & 43 |
|---------------+--------------------------------------------|
| 80486DX4 | 3 & 4, 11 & 12, 13 & 14, 15 & 16, 19 & 20, |
| | 21 & 22, 26 & 27, |
| | |
| | 37 & 38, 40 & 41, 42 & 43 |
|---------------+--------------------------------------------|
| P24T | 3 & 4, 5 & 6, 8 & 9, 11 & 12, 13 & 14, 15 |
| | & 16, 19 & 20, 21 & 22, |
| | |
| | 23 & 24, 36 & 37, 39 & 40, 42 & 43 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | W15 | W16 |
|--------------------+-------------------+-------------------|
| 25MHz | Open | Open |
|--------------------+-------------------+-------------------|
| 33MHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 40MHz | Open | Closed |
|--------------------+-------------------+-------------------|
| 50iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 66iMHz | Closed | Closed |
|--------------------+-------------------+-------------------|
| 75iMHz | Open | Open |
|--------------------+-------------------+-------------------|
| 100iMHz | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Size | J4 |
|------------------+-----------------------------------------|
| 3.3v | Open |
|------------------+-----------------------------------------|
| 4v | Open |
|------------------+-----------------------------------------|
| 5v | pins 3 & 5, 4 & 6, 7 & 9, 8 & 10 closed |
+------------------------------------------------------------+