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# MICRONICS COMPUTERS, INC.
MPOWER4
Processor 80486SX/ODP486SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50(internal)/50/66(internal)/75(internal),
Speed 100(internal)MHz
Chip Set Micronics
Max. Onboard 64MB
DRAM
Cache 64/128/256KB
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus, floppy drive interface,
IDE interface, parallel port, PS/2 mouse port,
serial ports (2), VGA feature connector, VGA port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Parallel port | J1 | Video feature | J31 |
| | | connector | |
|------------------+----------+-------------------+----------|
| Serial port 2 | J2 | VGA port | J32 |
|------------------+----------+-------------------+----------|
| Serial port 1 | J3 | Turbo LED | W18 |
|------------------+----------+-------------------+----------|
| Power LED & | J7 | Turbo switch | W19 |
| keylock | | | |
|------------------+----------+-------------------+----------|
| PS/2 mouse port | J10 | Reset switch | W20 |
|------------------+----------+-------------------+----------|
| IDE interface | J26 | IDE interface LED | W21 |
|------------------+----------+-------------------+----------|
| Floppy drive | J27 | 32-bit VESA Local | SL1 |
| interface | | bus slots | |
|------------------+----------+-------------------+----------|
| Speaker | J30 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | Real time clock installed | W1 | Closed |
|---+---------------------------+---------------+------------|
| | Real time clock not | W1 | Open |
| | installed | | |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | W2 | Closed |
|---+---------------------------+---------------+------------|
| | Monitor type select | W2 | Open |
| | monochrome | | |
|---+---------------------------+---------------+------------|
| » | IRQ12 PS/2 mouse enabled | W3 | Closed |
|---+---------------------------+---------------+------------|
| | PS/2 mouse disabled | W3 | Open |
|---+---------------------------+---------------+------------|
| » | Parity enabled | W4 | Closed |
|---+---------------------------+---------------+------------|
| | Parity disabled | W4 | Open |
|---+---------------------------+---------------+------------|
| » | CMOS memory normal | W5 | Closed |
| | operation | | |
|---+---------------------------+---------------+------------|
| | CMOS memory clear | W5 | Open |
|---+---------------------------+---------------+------------|
| » | Super I/O enabled | W7 | Open |
|---+---------------------------+---------------+------------|
| | Super I/O disabled | W7 | Closed |
|---+---------------------------+---------------+------------|
| » | Flash BIOS write protect | W8 | Open |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | Flash BIOS write protect | W8 | Closed |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | PQFP not installed | W13 | Open |
|---+---------------------------+---------------+------------|
| | PQFP disabled by | W13 | pins 1 & 2 |
| | Overdrive processor | | closed |
|---+---------------------------+---------------+------------|
| | PQFP manually disabled | W13 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W15 | pins 1 & 2 |
| | not alter | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W31 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | 80486SX CPU enabled | W33 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | 80486SX CPU disabled | W33 | 1 & 2, 3 & |
| | | | 4 closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | W36 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | VGA IRQ9 disabled | W303 | Open |
|---+---------------------------+---------------+------------|
| | VGA IRQ9 enabled | W303 | Closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/3 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/4 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| | VPU chip disabled | SW2/1 | Open |
|---+---------------------------+---------------+------------|
| | VPU chip enabled | SW2/1 | Closed |
|---+---------------------------+---------------+------------|
| | Video RAMDAC at snooping | SW2/2 | Open |
| | mode | | |
|---+---------------------------+---------------+------------|
| | Video RAMDAC at normal | SW2/2 | Closed |
| | mode | | |
|---+---------------------------+---------------+------------|
| | VGA BIOS disabled | SW2/3 | Open |
|---+---------------------------+---------------+------------|
| | VGA BIOS enabled | SW2/3 | Closed |
|---+---------------------------+---------------+------------|
| | External speaker disabled | SW2/3 | Open |
|---+---------------------------+---------------+------------|
| | External speaker enabled | SW2/3 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 4M x | NONE |
| | 36 | 36 | 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 | |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M 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 |
|------+-------------+-------------+------------+------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W10 | W11 | W16 | W17 | W22 | W23 | W24 |
|-------+-------+-------+-------+-------+------+------+------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & | 2 & | 1 & |
| | | | | | 3 | 3 | 2 |
|-------+-------+-------+-------+-------+------+------+------|
| 128KB | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & | 1 & | 2 & |
| | | | | | 2 | 2 | 3 |
|-------+-------+-------+-------+-------+------+------+------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & | 2 & | 2 & |
| | | | | | 3 | 3 | 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 80486DX4 CONFIGURATION |
|------------------------------------------------------------|
| 80486DX4 | W32 | W34 |
|------------------+--------------------+--------------------|
| Disabled | pins 1 & 2 closed | pins 3 & 4 closed |
|------------------+--------------------+--------------------|
| Enabled | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | Switch 1/1 | Switch 1/2 |
|------------------+--------------------+--------------------|
| 25MHz | Open | Closed |
|------------------+--------------------+--------------------|
| 33MHz | Closed | Closed |
|------------------+--------------------+--------------------|
| 50iMHz | Open | Closed |
|------------------+--------------------+--------------------|
| 66iMHz | Closed | Closed |
|------------------+--------------------+--------------------|
| 75iMHz | Open | Closed |
|------------------+--------------------+--------------------|
| 100iMHz | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL CONFIGURATION |
|------------------------------------------------------------|
| DMA Channel | W98 | W99 |
|------------------+--------------------+--------------------|
| Channel 1 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Channel 2 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|--------------+----------------------+----------------------|
| 1MB | (2) 512K x 8 | NONE |
|--------------+----------------------+----------------------|
| 2MB | (2) 512K x 8 | (8) 256K x 4 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
+------------------------------------------------------------+