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# DASH COMPUTER, INC.
DC3486 VESA
Processor 80386DX/CX486DLC/80486SX/80486DX/80486DX2
Processor Speed 25/33/40/50(internal)/50/66(internal)MHz
Chip Set OPTI
Max. Onboard DRAM 32MB
Cache 64/128/256KB
BIOS AMI
Dimensions 311mm x 226mm
I/O Options 32-bit VESA card slot (2)
NPU Options 80387DX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | J1 | Turbo LED | JP32 |
|-------------------+----------+------------------+----------|
| Power LED & | J19 | Reset switch | SW1 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J20 | 32-bit VESA | S1 & S2 |
| | | local bus slots | |
| | | (2) | |
|-------------------+----------+------------------+----------|
| Turbo switch | JP31 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | CMOS memory normal operation | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP2 | open |
| | alter | | |
|---+----------------------------------+--------+------------|
| | AT Bus speed select CLK/5 with | JP3 | open |
| | 80386 CPU | | |
|---+----------------------------------+--------+------------|
| | AT Bus speed select CLK/4 with | JP3 | closed |
| | 80386 CPU | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP4 | open |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP4 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP13 | JP15 |
|---------+-------------------+----------+---------+---------|
| 64KB | pins 2 & 3 closed | open | open | open |
|---------+-------------------+----------+---------+---------|
| 128KB | pins 1 & 2 closed | closed | closed | open |
|---------+-------------------+----------+---------+---------|
| 256KB | pins 2 & 3 closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG (U39) | TAG (U40) |
|-------+-------------+------------+------------+------------|
| 64KB | (8) 8K x 8 | Banks 0 & | (1) 8K x 8 | NONE |
| | | 1 | | |
|-------+-------------+------------+------------+------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | (1) 8K x 8 |
|-------+-------------+------------+------------+------------|
| 256KB | (8) 32K x 8 | Banks 0 & | (1) 8K x 8 | (1) 8K x 8 |
| | | 1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SLOTS 3 & 4 BUS CONFIGURATION |
|------------------------------------------------------------|
| Bus Type |JP8 & 9 |JP14 & | JP23 & | JP19 | JP21 | JP24 |
| | | 16 | 27 | | | |
|----------+--------+-------+--------+-------+-------+-------|
|» | VESA | open | open |pins 1 &| open | open | open |
| | | | | 2 | | | |
|---+------+--------+-------+--------+-------+-------+-------|
| | AT | closed |closed |pins 2 &|closed |closed |closed |
| | | | | 3 | | | |
|------------------------------------------------------------|
|Note:Slots 3 & 4 must both be configured as either 16-bit or|
|32-bit. |
| |
|Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION FOR 80486DX & 80486DX2 CPU |
|------------------------------------------------------------|
|Jumper|Postition| 25MHz | 33MHz | 50iMHz | 50MHz |66iMHz |
|------+---------+--------+--------+--------+--------+-------|
| JP5 |pins 1 & |pins 1 &|pins 1 &|pins 1 &|pins 1 &|pins 1 |
| | 2 | 2 | 2 | 2 | 2 | & 2 |
|------+---------+--------+--------+--------+--------+-------|
| JP6 | open | open | open | open | open | open |
|------+---------+--------+--------+--------+--------+-------|
| JP7 | open | open | open | open | open | open |
|------+---------+--------+--------+--------+--------+-------|
| JP12 | closed | closed | closed | closed | closed |closed |
|------+---------+--------+--------+--------+--------+-------|
| JP17 | closed | closed | closed | closed | closed |closed |
|------+---------+--------+--------+--------+--------+-------|
| JP18 | open | open | open | open | open | open |
|------+---------+--------+--------+--------+--------+-------|
| JP22 | N/A | open | open | open | closed | open |
|------+---------+--------+--------+--------+--------+-------|
| JP25 | N/A |pins 2 &|pins 2 &|pins 2 &|pins 1 &|pins 2 |
| | | 3 | 3 | 3 | 2 | & 3 |
|------+---------+--------+--------+--------+--------+-------|
| JP26 | N/A | open | open | open | closed | open |
|------+---------+--------+--------+--------+--------+-------|
| JP28 | N/A | closed | open | closed | closed | open |
|------+---------+--------+--------+--------+--------+-------|
| JP29 | N/A | open | closed | open | open |closed |
|------+---------+--------+--------+--------+--------+-------|
| JP30 | N/A | open | open | open | open | open |
|------+---------+--------+--------+--------+--------+-------|
| JP33 | N/A |pins 2 &|pins 2 &|pins 2 &|pins 1 &|pins 2 |
| | | 3 | 3 | 3 | 2 | & 3 |
|------+---------+--------+--------+--------+--------+-------|
| JP34 | N/A | closed | closed | closed | closed |closed |
|------+---------+--------+--------+--------+--------+-------|
| JP35 |pins 1 & |pins 1 &|pins 1 &|pins 1 &|pins 1 &|pins 1 |
| | 2 | 2 | 2 | 2 | 2 | & 2 |
|------+---------+--------+--------+--------+--------+-------|
| JP36 | closed | closed | closed | closed | closed |closed |
|------+---------+--------+--------+--------+--------+-------|
| JP37 |pins 1 & |pins 1 &|pins 1 &|pins 1 &|pins 1 &|pins 1 |
| | 2 | 2 | 2 | 2 | 2 | & 2 |
|------------------------------------------------------------|
|Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION FOR 80486SX CPU |
|------------------------------------------------------------|
| Jumper | Position | 25MHz | 33MHz |
|-----------+------------------+--------------+--------------|
| JP5 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+------------------+--------------+--------------|
| JP6 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP7 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP12 | closed | closed | closed |
|-----------+------------------+--------------+--------------|
| JP17 | see note 1 | see note 1 | see note 1 |
|-----------+------------------+--------------+--------------|
| JP18 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP22 | N/A | open | open |
|-----------+------------------+--------------+--------------|
| JP25 | N/A | pins 2 & 3 | pins 2 & 3 |
| | | closed | closed |
|-----------+------------------+--------------+--------------|
| JP26 | N/A | open | open |
|-----------+------------------+--------------+--------------|
| JP28 | N/A | closed | closed |
|-----------+------------------+--------------+--------------|
| JP29 | N/A | open | closed |
|-----------+------------------+--------------+--------------|
| JP30 | N/A | open | open |
|-----------+------------------+--------------+--------------|
| JP33 | N/A | pins 2 & 3 | pins 2 & 3 |
| | | closed | closed |
|-----------+------------------+--------------+--------------|
| JP34 | N/A | closed | closed |
|-----------+------------------+--------------+--------------|
| JP35 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP36 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP37 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|------------------------------------------------------------|
| Note 1 :Jumper JP17 should be closed when a PGA cpu is |
| installed, open for PQFP. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONFIGURATION FOR 80386DX & CX486DLC CPU |
|------------------------------------------------------------|
| Jumper | Position | 33MHz | 40MHz |
|-----------+------------------+--------------+--------------|
| JP5 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+------------------+--------------+--------------|
| JP6 | see note 1 | see note 1 | see note 1 |
|-----------+------------------+--------------+--------------|
| JP7 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP12 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP17 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP18 | see note 2 | see note 2 | see note 2 |
|-----------+------------------+--------------+--------------|
| JP22 | N/A | closed | open |
|-----------+------------------+--------------+--------------|
| JP25 | N/A | pins 2 & 3 | pins 2 & 3 |
| | | closed | closed |
|-----------+------------------+--------------+--------------|
| JP26 | N/A | open | closed |
|-----------+------------------+--------------+--------------|
| JP28 | N/A | open | open |
|-----------+------------------+--------------+--------------|
| JP29 | N/A | closed | open |
|-----------+------------------+--------------+--------------|
| JP30 | N/A | closed | closed |
|-----------+------------------+--------------+--------------|
| JP33 | N/A | pins 1 & 2 | pins 1 & 2 |
| | | closed | closed |
|-----------+------------------+--------------+--------------|
| JP34 | N/A | open | open |
|-----------+------------------+--------------+--------------|
| JP35 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP36 | open | open | open |
|-----------+------------------+--------------+--------------|
| JP37 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|------------------------------------------------------------|
| Note 1 :Jumper JP6 should be closed when a CX486DLC is |
| installed, open for 80386DX. |
| |
| Note 2 :Jumper JP18 should be closed when a PGA cpu is |
| installed, open for PQFP. |
+------------------------------------------------------------+