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# DIAMOND FLOWER, INC.
486-25/33UNB AIO, 486DX2-50UNB AIO
Processor 80486SX/80486DX/ODP486SX/80486DX2
Processor Speed 20/25/33/50(internal)MHz
Chip Set UMC
Max. Onboard DRAM 16MB
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Bus mouse port, floppy drive interface, IDE
interface, parallel port, serial port (2),
VGA port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface | CN1 | Turbo switch | J3 & J8 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN2 | Reset switch | J4 & J9 |
| interface | | | |
|-------------------+----------+------------------+----------|
| VGA feature | CN3 | IDE interface | J5 |
| connector | | LED | |
|-------------------+----------+------------------+----------|
| VGA port | CN4 | Power LED & | J6 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Parallel port | CN5 | Speaker | J7 |
|-------------------+----------+------------------+----------|
| Bus mouse port | CN6 | External battery | J10 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN7 | Serial port 2 | JP31 |
|-------------------+----------+------------------+----------|
| Alternate | J1 | Riser card | S1 |
| keyboard | | | |
| connector | | | |
|-------------------+----------+------------------+----------|
| Turbo LED | J2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------+--------+----------------------|
| » | Battery select | J11 | Pins 2 & 3 closed |
| | internal | | |
|---+------------------------+--------+----------------------|
| | Battery select | J11 | Pins 1 & 2 closed |
| | external | | |
|---+------------------------+--------+----------------------|
| » | Speaker select | JP1 | Closed |
| | internal | | |
|---+------------------------+--------+----------------------|
| | Speaker select | JP1 | Open |
| | external | | |
|---+------------------------+--------+----------------------|
| » | Onboard VGA local bus | JP2 | Pins 2 & 3 closed |
| | enabled | | |
| | | JP3 | Closed |
|---+------------------------+--------+----------------------|
| » | Onboard VGA local bus | JP2 | Pins 1 & 2 closed |
| | disabled | | |
| | | JP3 | Open |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP4 | Closed |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP5 | Pins 1 & 2 and 3 & 4 |
| | do not alter | | closed |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP6 | Open |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP7 | Open |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | BIOS type select | JP8 | Pins 2 & 3 closed |
| | 27C256 (32KB) | | |
|---+------------------------+--------+----------------------|
| | BIOS type select | JP8 | Pins 1 & 2 closed |
| | 27C512 (64KB) | | |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP10 | Open |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | Monitor type select | JP11 | Closed |
| | color | | |
|---+------------------------+--------+----------------------|
| | Monitor type select | JP11 | Open |
| | monochrome | | |
|---+------------------------+--------+----------------------|
| » | VGA port (CN4) | JP12 | Open |
| | interrupt select IRQ2 | | |
|---+------------------------+--------+----------------------|
| | VGA port (CN4) | JP12 | Closed |
| | interrupt select none | | |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP13 | Open |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP14 | Closed |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | Floppy interface | JP20 | Pins 1 & 2 closed |
| | enabled | | |
|---+------------------------+--------+----------------------|
| | Floppy interface | JP20 | Pins 2 & 3 closed |
| | disabled | | |
|---+------------------------+--------+----------------------|
| » | Factory configured - | JP21 | Pins 1 & 2 closed |
| | do not alter | | |
|---+------------------------+--------+----------------------|
| » | IDE interface enabled | JP22 | Pins 1 & 2 closed |
|---+------------------------+--------+----------------------|
| | IDE interface disabled | JP22 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT 1 (CN5) CONFIGURATION |
|------------------------------------------------------------|
| LPT | I/O | Interrupt | JP9 | JP15 | JP16 |
| | Address | | | | |
|----------+-----------+-----------+--------+--------+-------|
| LPT 1 | 3BC-3BEh | IRQ7 | Pins 1 | Pins 2 | Pins |
| | | | & 2 | & 3 | 1 & 2 |
|----------+-----------+-----------+--------+--------+-------|
| LPT 2 | 378-37Ah | IRQ7 | Pins 1 | Pins 1 | Pins |
| | | | & 2 | & 2 | 1 & 2 |
|----------+-----------+-----------+--------+--------+-------|
| LPT 3 | 278-27Ah | IRQ5 | Pins 2 | Pins 1 | Pins |
| | | | & 3 | & 2 | 2 & 3 |
|----------+-----------+-----------+--------+--------+-------|
| Disabled | N/A | N/A | N/A | Pins 2 | Pins |
| | | | | & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORTS 1 & 2 CONFIGURATION |
|------------------------------------------------------------|
| Serial | Serial | JP17 | JP18 | JP19 |
| Port 1 | Port 2 | | | |
|----------+----------+----------------+----------+----------|
| COM1 | COM2 | Pins 1 & 2 | Pins 1 & | Pins 1 & |
| | | closed | 2 closed | 2 closed |
|----------+----------+----------------+----------+----------|
| COM2 | COM1 | Pins 1 & 2 | Pins 1 & | Pins 2 & |
| | | closed | 2 closed | 3 closed |
|----------+----------+----------------+----------+----------|
| COM1 | Disabled | Pins 1 & 2 | Pins 2 & | Pins 1 & |
| | | closed | 3 closed | 2 closed |
|----------+----------+----------------+----------+----------|
| Disabled | COM1 | Pins 2 & 3 | Pins 1 & | Pins 2 & |
| | | closed | 2 closed | 3 closed |
|----------+----------+----------------+----------+----------|
| Disabled | COM2 | Pins 2 & 3 | Pins 1 & | Pins 1 & |
| | | closed | 2 closed | 2 closed |
|----------+----------+----------------+----------+----------|
| COM2 | Disabled | Pins 1 & 2 | Pins 2 & | Pins 2 & |
| | | closed | 3 closed | 3 closed |
|----------+----------+----------------+----------+----------|
| Disabled | Disabled | Pins 2 & 3 | Pins 2 & | Open |
| | | closed | 3 closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 (CN1) FORCED TRUE CONFIGURATION |
|------------------------------------------------------------|
| Mode | JP24 | JP25 | JP26 |
|---------------+--------------+--------------+--------------|
| Normal | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| operation | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| Forced true | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 (JP31) FORCED TRUE CONFIGURATION |
|------------------------------------------------------------|
| Mode | JP27 | JP28 | JP29 |
|---------------+--------------+--------------+--------------|
| Normal | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| operation | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| Forced true | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 (CN7) DTE/DCE CONFIGURATION |
|------------------------------------------------------------|
| Function | JP30 |
|----------+-------------------------------------------------|
| » | DTE | Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, and 9 & 10 |
| | | closed |
|----+-----+-------------------------------------------------|
| | DCE | Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, and 9 & 10 |
| | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 (JP31) DTE/DCE CONFIGURATION |
|------------------------------------------------------------|
| Function | JP23 |
|----------+-------------------------------------------------|
| » | DTE | Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, and 9 & 10 |
| | | closed |
|----+-----+-------------------------------------------------|
| | DCE | Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, and 9 & 10 |
| | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | VRAM | Location |
|------------------+--------------------+--------------------|
| 512KB | (4) 44256 | Bank 0 |
|------------------+--------------------+--------------------|
| 1024KB | (8) 44256 | Bank 0 & 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 256K x | (1) 1M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
+------------------------------------------------------------+