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# MICRONICS COMPUTERS, INC.
MINI 486 (VER.B)
Processor 80486SX/80487SX/80486DX/80486DX2/Pentium
Overdrive
Processor 25/33/50/66MHz
Speed
Chip Set Micronics
Max. Onboard 64MB
DRAM
Cache 64/128/256KB
BIOS Phoenix
Dimensions 240mm x 215mm
I/O Options None
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| External battery | J1 | Turbo LED | W14 |
|----------------------+----------+---------------+----------|
| Speaker | J18 | Turbo switch | W15 |
|----------------------+----------+---------------+----------|
| External keyboard | J19 | Power LED & | W19 |
| connector | | keylock | |
|----------------------+----------+---------------+----------|
| Reset switch | W13 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | CMOS memory normal operation | W1 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | W1 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | W3 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | W3 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+---------------+-------------+----------+------------|
| 1MB | (1) 256K x 36 | NONE | NONE | NONE |
|------+---------------+-------------+----------+------------|
| 2MB | (1) 256K x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+---------------+-------------+----------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+----------+------------|
| 6MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+---------------+-------------+----------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+---------------+-------------+----------+------------|
| 10MB | (1) 256K x 36 | (1) 256K x | (1) 1M x | (1) 1M x |
| | | 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 | (4) 1M x 9 |
| | | | 36 | |
|------+---------------+-------------+----------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+---------------+-------------+----------+------------|
| 18MB | (1) 256K x 36 | (1) 256K x | (1) 4M x | NONE |
| | | 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) 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 |
|------+---------------+-------------+----------+------------|
| 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) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W7 | W9 | W10 | W17 | W18 |
|----------+---------+---------+---------+---------+---------|
| 64KB | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 128KB | 1 & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|----------+---------+---------+---------+---------+---------|
| 256KB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | W12 |
|----------------------------+-------------------------------|
| 80486SX | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 80487SX | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 80486DX | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 80486DX2 | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| Overdrive | pins 1 & 2 closed |
+------------------------------------------------------------+