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# MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
MICROFRAME 486EX
Processor 80486DX
Processor Speed 25/33Mhz
Chip Set C & T
Max. Onboard DRAM 64MB
Cache None
BIOS AMI
Dimensions 355mm x 304mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| External battery | J1 | CPU ready LED | J9 |
|--------------------+----------+-----------------+----------|
| Power LED & | J2 | Auxiliary | J12 |
| keylock | | keyboard | |
|--------------------+----------+-----------------+----------|
| Disk acess | J3 | PS/2 mouse port | J13 |
| connector | | | |
|--------------------+----------+-----------------+----------|
| Front panel/ribbon | J7 | Speaker | J28 |
| cable connector | | | |
|--------------------+----------+-----------------+----------|
| Reset switch | J8 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | IRQ12 enabled for mouse | J11 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | IRQ12 disabled | J11 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | CPU speed select 25MHz | J29 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select 33MHz | J29 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Wait state enabled | J30 | Closed |
|---+---------------------------+---------------+------------|
| | Wait state disabled | J30 | Open |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J35 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | J36 | Open |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | CMOS memory normal | J45 | Open |
| | operation | | |
|---+---------------------------+---------------+------------|
| | CMOS memory clear | J45 | Closed |
|---+---------------------------+---------------+------------|
| » | DMA active select high | J46 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | DMA active select low | J46 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/switch 1 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1/switch 2 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| | Factory configured - do | SW1/switch 3 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | SW1/switch 4 | On |
|---+---------------------------+---------------+------------|
| | Monitor type select | SW1/switch 4 | Off |
| | monochrome | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 4M x 36 | (2) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | (2) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 24MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | NONE | (2) 4M x 36 | (2) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x | (2) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | (2) 8M x 36 | (2) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | (2) 4M x 36 | (2) 4M x | (2) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | NONE | (2) 4M x 36 | (2) 8M x | (2) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x | (2) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x | (2) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | NONE | (2) 8M x 36 | (2) 8M x | (2) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 56MB | (2) 4M x 36 | (2) 8M x 36 | (2) 8M x | (2) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x | (2) 8M x |
| | | | 36 | 36 |
+------------------------------------------------------------+