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# TULIP COMPUTERS
TULIP 486 DC/DT (TC38)
Processor 80486SX/80487SX/80486DX/80486DX2
Processor 25/33/50(internal)/66(internal)
Speed
Chip Set Texas Instruments
Max. Onboard 20MB
DRAM
Cache None
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interface, parallel
port, serial ports(2), VGA port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| VGA port | CN1 | IDE interface | J3 |
|---------------------+----------+----------------+----------|
| Parallel port | CN2 | DC Power | J7 |
|---------------------+----------+----------------+----------|
| Serial port 2 | CN3 | Video Feature | J9 |
| | | Connector | |
|---------------------+----------+----------------+----------|
| Serial port 1 | CN4 | Floppy drive | J10 |
| | | interface | |
|---------------------+----------+----------------+----------|
| LED, Speaker, | J2 | Chassis fan | J13 |
| Batteries | | power | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Battery - Rechargeable | J14 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Battery - Non-rechargeable | J14 | N/A |
|---+--------------------------------+--------+--------------|
| » | Parallel port (unidirectional) | J15 | Pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Parallel port (bidirectional) | J15 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| PQFP | PGA | J17 | J18 |
|---------+-------------+------------------+-----------------|
| 80486SX | None | Pins 2 & 3 | N/A |
| | | closed | |
|---------+-------------+------------------+-----------------|
| 80486SX | 80487SX | Pins 2 & 3 | N/A |
| | | closed | |
|---------+-------------+------------------+-----------------|
| 80486SX | Overdrive | Pins 2 & 3 | N/A |
| | | closed | |
|---------+-------------+------------------+-----------------|
| 80486SX | Overdrive R | Pins 2 & 3 | Pins 1 & 2 |
| | | closed | closed |
|---------+-------------+------------------+-----------------|
| 80486DX | None | Pins 2 & 3 | N/A |
| | | closed | |
|---------+-------------+------------------+-----------------|
| 80486DX | Overdrive | Pins 2 & 3 | N/A |
| | | closed | |
|---------+-------------+------------------+-----------------|
| 80486DX | Overdrive R | Pins 2 & 3 | Pins 1 & 2 |
| | | closed | closed |
|---------+-------------+------------------+-----------------|
| None | 80486DX | Pins 2 & 3 | None |
| | | closed | |
|---------+-------------+------------------+-----------------|
| None | 80486DX2 | Pins 2 & 3 | None |
| | | closed | |
|---------+-------------+------------------+-----------------|
| None | Overdrive | Pins 2 & 3 | None |
| | | closed | |
|---------+-------------+------------------+-----------------|
| None | Overdrive R | Pins 2 & 3 | None |
| | | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Expansion from: | Expansion to | Bank 0 |
|--------------------+--------------------+------------------|
| 4MB | 8MB | (4) 1MB x 9 |
|--------------------+--------------------+------------------|
| 4MB | 20MB | (4) 4MB x 9 |
|------------------------------------------------------------|
| Note: 4MB is internal memory and is not configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Expansion from: | Expansion to | Vram |
|---------------------+------------------+-------------------|
| 512KB | 1MB | (1) 256K x 16 |
|------------------------------------------------------------|
| Note: 512 KB is internal memory and is not configurable. |
+------------------------------------------------------------+