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# DIAMOND FLOWER, INC.
G486-EVB (REV. A)
Processor CX486S/80486SX/SL80486SX/CX486S2/CX486DX/AM486DXL/80486DX/SL80486DX/CX486DX2/AM486DXT(NV8T)/80486DX2/SL80486DX2/SL80486DX4
Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)MHz
Speed
Chip Set Unidentified
Video Chip None
Set
Maximum 64MB
Onboard
Memory
Maximum None
Video
Memory
Cache 128/256/512KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Green PC LED | D6 | Green PC | JP44 |
| | | connector | |
|------------------+----------+-------------------+----------|
| External battery | JP14 | Reset switch | JP45 |
|------------------+----------+-------------------+----------|
| Power LED & | JP40 | 32-bit VESA local | SL1 – |
| keylock | | bus slots | SL3 |
|------------------+----------+-------------------+----------|
| Speaker | JP41 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Battery type select external | JP3 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Battery type select internal | JP3 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | BIOS type select 27512 | JP10 | Open |
|---+-----------------------------------+-------+------------|
| | BIOS type select 28F010 | JP10 | Closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP15 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | None | None | None |
| | 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 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | None | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | None | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP19 | JP20 | JP21 | JP26 | JP27 | JP28 |
|--------+--------+-------+-------+--------+--------+--------|
| 128KB | Open | 2 & 3 | 2 & 3 | Closed | Closed | Open |
|--------+--------+-------+-------+--------+--------+--------|
| 256KB | Open | 1 & 2 | 1 & 2 | Closed | Closed | Closed |
|--------+--------+-------+-------+--------+--------+--------|
| 512KB | Closed | 2 & 3 | 1 & 2 | Closed | Closed | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP36 | JP37 | S1 | S2 | S3 |
|----------+---------+---------+----------+---------+--------|
| 25MHz | 1 & 2 | 1 & 2 | Closed | Open | Open |
|----------+---------+---------+----------+---------+--------|
| 33MHz | 1 & 2 | 1 & 2 | Closed | Closed | Closed |
|----------+---------+---------+----------+---------+--------|
| 40MHz | 1 & 2 | 1 & 2 | Closed | Closed | Open |
|----------+---------+---------+----------+---------+--------|
| 50iMHz | 1 & 2 | 1 & 2 | Closed | Open | Open |
|----------+---------+---------+----------+---------+--------|
| 66iMHz | 1 & 2 | 1 & 2 | Closed | Closed | Closed |
|----------+---------+---------+----------+---------+--------|
| 75iMHz | 1 & 2 | 1 & 2 | Closed | Open | Open |
|----------+---------+---------+----------+---------+--------|
| 80iMHz | 1 & 2 | 1 & 2 | Closed | Closed | Open |
|----------+---------+---------+----------+---------+--------|
| 100iMHz | 1 & 2 | 1 & 2 | Closed | Closed | Closed |
|----------+---------+---------+----------+---------+--------|
| 120iMHz | 1 & 2 | 1 & 2 | Closed | Closed | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP17 | JP18 | JP22 | JP23 | JP24 |
|-----------------+---------+--------+-------+-------+-------|
| CX486S | Closed | Open | 2 & 3 | 2 & 3 | 2 & 3 |
|-----------------+---------+--------+-------+-------+-------|
| 80486SX | Open | Open | N/A | N/A | N/A |
|-----------------+---------+--------+-------+-------+-------|
| SL80486SX | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------------+---------+--------+-------+-------+-------|
| CX486S2 | Closed | Open | 2 & 3 | 2 & 3 | 2 & 3 |
|-----------------+---------+--------+-------+-------+-------|
| CX486DX | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|-----------------+---------+--------+-------+-------+-------|
| AM486DXL | Open | Open | Open | Open | Open |
|-----------------+---------+--------+-------+-------+-------|
| 80486DX | Open | Open | N/A | N/A | N/A |
|-----------------+---------+--------+-------+-------+-------|
| SL80486DX | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------------+---------+--------+-------+-------+-------|
| CX486DX2 | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|-----------------+---------+--------+-------+-------+-------|
| AM486DX2 (NV8T) | Open | Open | Open | Open | Open |
|-----------------+---------+--------+-------+-------+-------|
| 80486DX2 | Open | Open | N/A | N/A | N/A |
|-----------------+---------+--------+-------+-------+-------|
| SL80486DX2 | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------------+---------+--------+-------+-------+-------|
| SL80486DX4 | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP25 | JP29 | JP30 | JP31 | JP49 |
|-----------------+--------+-------+-------+--------+--------|
| CX486S | Open | 2 & 3 | Open | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| 80486SX | N/A | 2 & 3 | Open | Open | N/A |
|-----------------+--------+-------+-------+--------+--------|
| SL80486SX | Open | 2 & 3 | Open | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| CX486S2 | Open | 2 & 3 | Open | Open | Open |
|-----------------+--------+-------+-------+--------+--------|
| CX486DX | Open | 1 & 2 | 2 & 3 | Closed | Open |
|-----------------+--------+-------+-------+--------+--------|
| AM486DXL | Closed | 1 & 2 | 2 & 3 | Closed | Closed |
|-----------------+--------+-------+-------+--------+--------|
| 80486DX | N/A | 1 & 2 | 2 & 3 | Closed | N/A |
|-----------------+--------+-------+-------+--------+--------|
| SL80486DX | Open | 1 & 2 | 2 & 3 | Closed | Open |
|-----------------+--------+-------+-------+--------+--------|
| CX486DX2 | Open | 1 & 2 | 2 & 3 | Closed | Open |
|-----------------+--------+-------+-------+--------+--------|
| AM486DX2 (NV8T) | Open | 1 & 2 | 2 & 3 | Closed | Open |
|-----------------+--------+-------+-------+--------+--------|
| 80486DX2 | N/A | 1 & 2 | 2 & 3 | Closed | N/A |
|-----------------+--------+-------+-------+--------+--------|
| SL80486DX2 | Open | 1 & 2 | 2 & 3 | Closed | Open |
|-----------------+--------+-------+-------+--------+--------|
| SL80486DX4 | Open | 1 & 2 | 2 & 3 | Closed | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP38 |
|-------------------------------+----------------------------|
| SL-enhanced | Open |
|-------------------------------+----------------------------|
| Non SL-enhanced | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP32 |
|----------------------------+-------------------------------|
| | 3.3v | Pins 5 & 6, 7 & 8 closed |
|---+------------------------+-------------------------------|
| » | 5v | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS WAIT STATE SELECTION |
|------------------------------------------------------------|
| Setting | JP50 |
|---------------------------------+--------------------------|
| | 0 | Open |
|--------+------------------------+--------------------------|
| » | 1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP51 |
|---------------------------------+--------------------------|
| | <= 33MHz | Open |
|----+----------------------------+--------------------------|
| » | >33 MHz | Closed |
+------------------------------------------------------------+