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# MULTI DIMENSION RESEARCH, INC.
CACHE FM-S486C
Processor 80486DX
Processor Speed 25/33/40/50MHz
Chip Set Symphony
Max. Onboard DRAM 32MB
Cache 64/128/256/1024KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Speaker | JP1 | Turbo switch | JP10 |
|---------------------+----------+----------------+----------|
| Reset switch | JP2 | Turbo LED | JP11 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CPU speed select CCLK2 | JP3 | pins 1 & 2 |
| | (CLOCK=OSC) | | closed |
|---+----------------------------------+--------+------------|
| | CPU speed select PLCK | JP3 | pins 2 & 3 |
| | (CLOCK=OSC2) | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP6 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP6 | Open |
|---+----------------------------------+--------+------------|
| » | Cache write hit select 0 wait | JP32 | Closed |
| | state | | |
|---+----------------------------------+--------+------------|
| | Cache write hit select 1 wait | JP32 | Open |
| | state | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP33 | pins 2 & 3 |
| | alter | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 256K x 9 | (4) 1 M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | Line size |
|-------+-------------+-------------+------------+-----------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | 4 |
|-------+-------------+-------------+------------+-----------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x | 1 |
| | | | 8 | |
|-------+-------------+-------------+------------+-----------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | 4 |
|-------+-------------+-------------+------------+-----------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x | 4 |
| | | | 8 | |
|-------+-------------+-------------+------------+-----------|
| 1MB | (4) 128K x | (4) 128K x | (1) 128K x | 4 |
| | 8 | 8 | 8 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP22 | JP23 | JP24 | JP25 | JP26 |
|----------+----------+----------+--------+--------+---------|
| 64KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | Open |
|----------+----------+----------+--------+--------+---------|
| 128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
|----------+----------+----------+--------+--------+---------|
| 128KB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
|----------+----------+----------+--------+--------+---------|
| 256KB | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | Open |
|----------+----------+----------+--------+--------+---------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | JP28 | JP34 | JP35 | JP36 | JP37 |
|----------+----------+---------+----------+--------+--------|
| 64KB | Closed | JP22 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+----------+---------+----------+--------+--------|
| 128KB | Open | JP23 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+---------+----------+--------+--------|
| 128KB | Closed | JP24 | 1 & 2 | 1 & 2 | 1 & 2 |
|----------+----------+---------+----------+--------+--------|
| 256KB | Closed | JP25 | 2 & 3 | 2 & 3 | 2 & 3 |
|----------+----------+---------+----------+--------+--------|
| 1MB | Closed | JP26 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | JP38 | JP39 | JP40 | JP41 | JP42 |
|----------+----------+---------+---------+---------+--------|
| 64KB | Open | 2 & 3 | 2 & 3 | Open | 2 & 3 |
|----------+----------+---------+---------+---------+--------|
| 128KB | Closed | Open | 1 & 2 | Closed | 2 & 3 |
|----------+----------+---------+---------+---------+--------|
| 128KB | Closed | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|----------+----------+---------+---------+---------+--------|
| 256KB | Open | 2 & 3 | 2 & 3 | Open | 2 & 3 |
|----------+----------+---------+---------+---------+--------|
| 1MB | Open | 2 & 3 | 2 & 3 | Open | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP12 | JP13 | JP14 |
|--------------+------------+-------------------+------------|
| 80486SX | Open | pins 2 & 3 closed | Open |
|--------------+------------+-------------------+------------|
| 80486DX | Closed | pins 1 & 2 closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | OSC | JP27 |
|--------------------+-------------------+-------------------|
| 25MHz | 50MHz | Open |
|--------------------+-------------------+-------------------|
| 33MHz | 66MHz | Open |
|--------------------+-------------------+-------------------|
| 40MHz | 40MHz | Closed |
|--------------------+-------------------+-------------------|
| 40MHz | 80MHz | Open |
|--------------------+-------------------+-------------------|
| 50MHz | 50MHz | Closed |
+------------------------------------------------------------+