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# TULIP COMPUTERS
TULIP VISION LINE DT 486SX-25/DT 486DX-33I/DT 486DX-50I/
DT 486DX-66I/DT 486SX-33/DC 486SX-25/DC 486DX-33I/
WS 486SX-25/WS 486DX-33I
Processor 80486SX/80487SX/80486DX/80486DX2/OverDrive
DX2/OverDrive DX2 R
Processor 25/33/50 (internal)/66iMHz
Speed
Chip Set Unidentified
Max. Onboard 20MB
DRAM
Cache None
BIOS Unidentified
Dimensions 280mm x 254mm
I/O Options Parallel port, serial ports (2), VGA port, VGA
feature connector, floppy drive interface, IDE
interface
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------------+----------+--------------+----------|
| Serial port 1 | J1 | VGA port | J6 |
|-----------------------+----------+--------------+----------|
| LED, speaker, & | J2 | VGA feature | J9 |
| battery | | connector | |
|-----------------------+----------+--------------+----------|
| IDE interface | J3 | Floppy drive | J10 |
| | | interface | |
|-----------------------+----------+--------------+----------|
| Serial port 2 | J4 | Extra fan | J13 |
| | | connector | |
|-----------------------+----------+--------------+----------|
| Parallel port | J5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery type select internal | J14 | Open |
|---+----------------------------------+--------+------------|
| | Battery type select external | J14 | Closed |
|---+----------------------------------+--------+------------|
| » | Parallel mode bidirectional | J15 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Parallel mode unidirectional | J15 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J17 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | PQFP CPU enabled | J18 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | PQFP CPU disabled | J18 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|-----------------+------------------+-----------------------|
| 4MB | 4MB | NONE |
|-----------------+------------------+-----------------------|
| 8MB | 4MB | (4) 1MB x 9 |
|-----------------+------------------+-----------------------|
| 20MB | 4MB | (4) 4MB x 9 |
|------------------------------------------------------------|
| Note:Bank 0 is factory installed on the board and can |
| not be changed. Its exact location and configuration |
| is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | U6 |
|----------------+-----------------+-------------------------|
| 512KB | 512KB | NONE |
|----------------+-----------------+-------------------------|
| 1MB | 512KB | (1) 512K x 8 ZIP |
|------------------------------------------------------------|
| Note:Bank 0 is factory installed on the board and can |
| not be changed. Its exact location and configuration |
| is unidentified. |
+------------------------------------------------------------+