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# DIAMOND FLOWER, INC.
G486-EVB (REV. B)
Processor CX486SX/80486(WB)/80486SX/SL80486SX/CX486DX/80486DX/
AM486DX/AM486DXL/SL80486DX/CX486DX2V/CX486DX2/
AM486DX2/AM486DXL2/80486DX2/SL80486DX2/AM486DX4/
80486DX4/P24T
Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/
Speed 100(internal)MHz
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 | JP2 | Reset switch | JP45 |
|------------------+----------+-------------------+----------|
| Power LED & | JP40 | 32-bit VESA local | SL1 – |
| keylock | | bus slots | SL3 |
|------------------+----------+-------------------+----------|
| Speaker | JP41 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | BIOS type select 28F010 | JP1 | Closed |
|---+---------------------------------+-------+--------------|
| | BIOS type select 27512 | JP1 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP5 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Battery type select internal | JP8 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Battery type select external | JP8 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP14 | Closed |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP31 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP43 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | None | None | None |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 512K x | None | None | None |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 512K x | None | (1) 512K x | None |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | None | (1) 2M x | None |
| | | | 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 | JP25 | JP26 | JP27 |
|--------+--------+-------+-------+--------+--------+--------|
| 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 TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP15 | JP16 | JP17 | JP18 | JP22 |
|------------------+--------+--------+-------+-------+-------|
| CX486SX(WB) | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| CX486SX(WT) | Closed | Closed | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| 80486 (WB 3.3v) | Open | Closed | 2 & 3 | 2 & 3 | 1 & |
| | | | | | 2, 3 |
| | | | | | & 4 |
|------------------+--------+--------+-------+-------+-------|
| 80486 (WB 5v) | Open | Closed | 2 & 3 | 2 & 3 | 1 & |
| | | | | | 2, 3 |
| | | | | | & 4 |
|------------------+--------+--------+-------+-------+-------|
| 80486SX | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| SL80486SX | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------+--------+--------+-------+-------+-------|
| CX486DX(WB) | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| CX486DX(WT) | Closed | Closed | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| 80486DX | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| AM486DX | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| AM486DXL | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------+--------+--------+-------+-------+-------|
| CX486DX2V-50(WB) | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| CX486DX2V-50(WT) | Closed | Closed | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| CX486DX2(WB) | Closed | Closed | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| CX486DX2(WT) | Closed | Closed | 1 & 2 | 1 & 2 | 2 & 3 |
|------------------+--------+--------+-------+-------+-------|
| AM486DX2 | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| AM486DX2 (NV8T) | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| AM486DXL2 | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| 80486DX2 | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX2 | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------+--------+--------+-------+-------+-------|
| AM486DX4 (NV8T) | Open | Open | 1 & 2 | 1 & 2 | Open |
|------------------+--------+--------+-------+-------+-------|
| 80486DX4 | Open | Open | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------+--------+--------+-------+-------+-------|
| P24T(WB) | Open | Closed | 2 & 3 | 2 & 3 | 1 & 2 |
|------------------+--------+--------+-------+-------+-------|
| P24T(WT) | Open | Closed | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP23 | JP24 | JP28 | JP29 | JP30 |
|---------------+--------+----------+-------+-------+--------|
| CX486SX(WB) | 2 & 3 | 2 & 3, 4 | 2 & 3 | Open | Open |
| | | & 5 | | | |
|---------------+--------+----------+-------+-------+--------|
| CX486SX(WT) | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|---------------+--------+----------+-------+-------+--------|
| 80486 (WB | 1 & 2, | 1 & 2, 3 | 1 & 2 | 2 & 3 | Closed |
| 3.3v) | 3 & 4 | & 4 | | | |
|---------------+--------+----------+-------+-------+--------|
| 80486 (WB 5v) | 1 & 2, | 1 & 2, 3 | 1 & 2 | 2 & 3 | Closed |
| | 3 & 4 | & 4 | | | |
|---------------+--------+----------+-------+-------+--------|
| 80486SX | Open | Open | 2 & 3 | Open | Open |
|---------------+--------+----------+-------+-------+--------|
| SL80486SX | 1 & 2 | 1 & 2 | 2 & 3 | Open | Open |
|---------------+--------+----------+-------+-------+--------|
| CX486DX(WB) | 2 & 3 | 2 & 3, 4 | 1 & 2 | 2 & 3 | Closed |
| | | & 5 | | | |
|---------------+--------+----------+-------+-------+--------|
| CX486DX(WT) | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| 80486DX | Open | Open | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| AM486DX | Open | Open | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| AM486DXL | Open | Open | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| SL80486DX | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| CX486DX2V(WB) | 2 & 3 | 2 & 3, 4 | 1 & 2 | 2 & 3 | Closed |
| | | & 5 | | | |
|---------------+--------+----------+-------+-------+--------|
| CX486DX2V(WT) | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| CX486DX2(WB) | 2 & 3 | 2 & 3, 4 | 1 & 2 | 2 & 3 | Closed |
| | | & 5 | | | |
|---------------+--------+----------+-------+-------+--------|
| CX486DX2(WT) | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| AM486DX2 | Open | Open | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| AM486DX2 | Open | Open | 1 & 2 | 2 & 3 | Closed |
| (NV8T) | | | | | |
|---------------+--------+----------+-------+-------+--------|
| AM486DXL2 | Open | Open | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| 80486DX2 | Open | Open | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| SL80486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| AM486DX4 | Open | Open | 1 & 2 | 2 & 3 | Closed |
| (NV8T) | | | | | |
|---------------+--------+----------+-------+-------+--------|
| 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | Closed |
|---------------+--------+----------+-------+-------+--------|
| P24T(WB) | 1 & 2, | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
| | 3 & 4 | | | | |
|---------------+--------+----------+-------+-------+--------|
| P24T(WT) | 1 & 2, | 1 & 2 | 1 & 2 | 1 & 2 | Closed |
| | 3 & 4 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP32 | JP33 | JP34 | JP36 |
|-----------------+--------+------------+-------+------------|
| CX486SX(WB) | 2 & 3, | 1 & 2, 3 & | Open | Open |
| | 4 & 5 | 4 | | |
|-----------------+--------+------------+-------+------------|
| CX486SX(WT) | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| 80486 (WB 3.3v) | 1 & 2 | 5 & 6, 7 & | Open | Open |
| | | 8 | | |
|-----------------+--------+------------+-------+------------|
| 80486 (WB 5v) | 1 & 2 | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| 80486SX | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| SL80486SX | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| CX486DX(WB) | 2 & 3, | 1 & 2, 3 & | Open | Open |
| | 4 & 5 | 4 | | |
|-----------------+--------+------------+-------+------------|
| CX486DX(WT) | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| 80486DX | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| AM486DX | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| AM486DXL | Open | 1 & 2, 3 & | Open | 1 & 2, 3 & |
| | | 4 | | 4 |
|-----------------+--------+------------+-------+------------|
| SL80486DX | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| CX486DX2V(WB) | 2 & 3, | 5 & 6, 7 & | Open | Open |
| | 4 & 5 | 8 | | |
|-----------------+--------+------------+-------+------------|
| CX486DX2V(WT) | Open | 5 & 6, 7 & | Open | Open |
| | | 8 | | |
|-----------------+--------+------------+-------+------------|
| CX486DX2(WB) | 2 & 3, | 1 & 2, 3 & | Open | Open |
| | 4 & 5 | 4 | | |
|-----------------+--------+------------+-------+------------|
| CX486DX2(WT) | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| AM486DX2 | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| AM486DX2 (NV8T) | Open | 5 & 6, 7 & | 7 & 8 | Open |
| | | 8 | | |
|-----------------+--------+------------+-------+------------|
| AM486DXL2 | Open | 1 & 2, 3 & | Open | 1 & 2, 3 & |
| | | 4 | | 4 |
|-----------------+--------+------------+-------+------------|
| 80486DX2 | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| SL80486DX2 | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| AM486DX4 (NV8T) | Open | 5 & 6, 7 & | 5 & 6 | Open |
| | | 8 | | |
|-----------------+--------+------------+-------+------------|
| 80486DX4 | Open | 5 & 6, 7 & | Open | Open |
| | | 8 | | |
|-----------------+--------+------------+-------+------------|
| P24T(WB) | 1 & 2 | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|-----------------+--------+------------+-------+------------|
| P24T(WT) | Open | 1 & 2, 3 & | Open | Open |
| | | 4 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | S1 | S2 | S3 |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 80iMHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP35 |
|-------------------------------+----------------------------|
| Non SL-enhanced | Closed |
|-------------------------------+----------------------------|
| SL-enhanced | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS WAIT STATE SELECTION |
|------------------------------------------------------------|
| Setting | JP41 |
|-------------------------------+----------------------------|
| 0 | Open |
|-------------------------------+----------------------------|
| 1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP42 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| >33 MHz | Closed |
+------------------------------------------------------------+