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# INTEL CORPORATION
486-GL GREEN/VESA
Processor CX486S/CX486S2/80486SX/80487SX/CX486DX/80486DX/CX486DX2/
80486DX2/80486DX4/Pentium Overdrive
Processor 20/25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set OPTI
Max. 128MB
Onboard
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connectors (2)
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | J1 | Green PC | JP21 |
| | | connector | |
| | | (hardware) | |
|------------------+----------+-------------------+----------|
| Power LED & | J2 | Green PC | JP32 |
| keylock | | connector | |
| | | (monitor) | |
|------------------+----------+-------------------+----------|
| Turbo switch | JP16 | Reset switch | S1 |
|------------------+----------+-------------------+----------|
| Turbo LED | JP17 | 32-bit VESA local | SL1 - |
| | | bus slots | SL3 |
|------------------+----------+-------------------+----------|
| Speaker | JP18 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | CPU type select PGA | JP1 | Closed |
|---+--------------------------------+--------+--------------|
| | CPU type select PQFP | JP1 | Open |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP26 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP26 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Monitor type select color | JP30 | Closed |
|---+--------------------------------+--------+--------------|
| | Monitor type select monochrome | JP30 | Open |
|---+--------------------------------+--------+--------------|
| » | Intel SMI CPU | JP45 | Closed |
|---+--------------------------------+--------+--------------|
| | Non Intel SMI CPU | JP45 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 2MB | NONE | (1) 512K x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 4MB | NONE | (1) 512K x | NONE | (1) 512K x |
| | | 36 | | 36 |
|-------+-------------+------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 5MB | (1) 256K x | (1) 1M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 6MB | NONE | (1) 512K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 8MB | NONE | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 10MB | NONE | (1) 512K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | NONE | (1) 2M x |
| | 36 | 36 | | 36 |
|-------+-------------+------------+------------+------------|
| 10MB | NONE | (1) 512K x | NONE | (1) 2M x |
| | | 36 | | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 1M x 36 | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 12MB | (1) 1M x 36 | NONE | NONE | (1) 2M x |
| | | | | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | NONE | (1) 2M x | NONE | (1) 2M x |
| | | 36 | | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|-------+-------------+------------+------------+------------|
| 17MB | (1) 256K x | (1) 4M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 32MB | NONE | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x | (1) 2M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 52MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | NONE | (1) 8M x | NONE | (1) 8M x |
| | | 36 | | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 16M x | NONE | NONE | NONE |
| | 36 | | | |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | NONE | (1) 32M x | NONE | NONE |
| | | 36 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 16K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP13 | JP35 |
|-------+--------+--------+-----------------+----------------|
| 64KB | Open | Open | pins 2 & 3 | pins 1 & 2 |
| | | | closed | closed |
|-------+--------+--------+-----------------+----------------|
| 128KB | Open | Closed | pins 1 & 2 | pins 1 & 2 |
| | | | closed | closed |
|-------+--------+--------+-----------------+----------------|
| 256KB | Closed | Closed | pins 2 & 3 | pins 1 & 2 |
| | | | closed | closed |
|-------+--------+--------+-----------------+----------------|
| 256KB | Closed | Closed | pins 2 & 3 | pins 2 & 3 |
| | | | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP6 | JP7 |
|--------------------+-------------------+-------------------|
| 80486SX | Open | Open |
|--------------------+-------------------+-------------------|
| 80486DX | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP27 | JP43 |
|------------------+--------------------+--------------------|
| AMD SMI | Open | Open |
|------------------+--------------------+--------------------|
| Intel SL | Open | Open |
|------------------+--------------------+--------------------|
| CX486DX (1x) | pins 1 & 2 closed | Open |
|------------------+--------------------+--------------------|
| CX486DX (2x) | pins 2 & 3 closed | Open |
|------------------+--------------------+--------------------|
| 80486DX4 (2x) | Open | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 80486DX4 (3x) | Open | Open |
|------------------+--------------------+--------------------|
| Other CPU types | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP3 | JP5 | JP8 | JP9 |
|-------------+-----------+-----------+-----------+----------|
| CX486S | Open | Open | pins 2 & | pins 1 & |
| | | | 3 closed | 2 closed |
|-------------+-----------+-----------+-----------+----------|
| 80486SX | Open | Open | pins 2 & | Open |
| | | | 3 closed | |
|-------------+-----------+-----------+-----------+----------|
| 80487SX | pins 2 & | pins 2 & | pins 1 & | Open |
| | 3 closed | 3 closed | 2 closed | |
|-------------+-----------+-----------+-----------+----------|
| CX4786DX | pins 1 & | pins 2 & | pins 1 & | pins 1 & |
| | 2 closed | 3 closed | 2 closed | 2 closed |
|-------------+-----------+-----------+-----------+----------|
| 80486DX/DX2 | pins 1 & | pins 2 & | pins 1 & | Open |
| | 2 closed | 3 closed | 2 closed | |
|-------------+-----------+-----------+-----------+----------|
| 80486DX4 | pins 1 & | pins 2 & | pins 1 & | Open |
| | 2 closed | 3 closed | 2 closed | |
|-------------+-----------+-----------+-----------+----------|
| P24T | pins 1 & | pins 2 & | pins 1 & | pins 2 & |
| | 2 closed | 3 closed | 2 closed | 3 closed |
|-------------+-----------+-----------+-----------+----------|
| P24D | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP12 | JP22 | JP23 | JP50 |
|-------------+--------+---------------+--------+------------|
| CX486S | Open | pins 1 & 2 | Open | pins 2 & 3 |
| | | closed | | closed |
|-------------+--------+---------------+--------+------------|
| 80486SX | Open | pins 1 & 2 | Open | Open |
| | | closed | | |
|-------------+--------+---------------+--------+------------|
| 80487SX | Open | pins 1 & 2 | Open | Open |
| | | closed | | |
|-------------+--------+---------------+--------+------------|
| CX4786DX | Open | pins 1 & 2 | Open | pins 2 & 3 |
| | | closed | | closed |
|-------------+--------+---------------+--------+------------|
| 80486DX/DX2 | Open | pins 1 & 2 | Open | Open |
| | | closed | | |
|-------------+--------+---------------+--------+------------|
| 80486DX4 | Open | pins 1 & 2 | Open | Open |
| | | closed | | |
|-------------+--------+---------------+--------+------------|
| P24T | Open | pins 2 & 3 | Open | Open |
| | | closed | | |
|-------------+--------+---------------+--------+------------|
| P24D | Closed | Open | Closed | pins 1 & 2 |
| | | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JJ2 | JP38 | JP39 | JP40 | JP48 |
|--------------+--------+---------+---------+--------+-------|
| 20MHz | 1 & 2 | Open | Closed | Open | 1 & 2 |
|--------------+--------+---------+---------+--------+-------|
| 25MHz | 1 & 2 | Closed | Closed | Open | 1 & 2 |
|--------------+--------+---------+---------+--------+-------|
| 33MHz | 1 & 2 | Closed | Open | Closed | 1 & 2 |
|--------------+--------+---------+---------+--------+-------|
| 33iMHz (DX4) | 1 & 2 | Closed | Open | Closed | 2 & 3 |
|--------------+--------+---------+---------+--------+-------|
| 40MHz | 1 & 2 | Open | Closed | Closed | 1 & 2 |
|--------------+--------+---------+---------+--------+-------|
| 50iMHz | 1 & 2 | Closed | Closed | Open | 1 & 2 |
|--------------+--------+---------+---------+--------+-------|
| 50MHz | 1 & 2 | Closed | Closed | Closed | 1 & 2 |
|--------------+--------+---------+---------+--------+-------|
| 50iMHz (DX4) | 2 & 3 | Closed | Closed | Open | 2 & 3 |
|--------------+--------+---------+---------+--------+-------|
| 66iMHz | 1 & 2 | Closed | Open | Closed | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP2 |
|----------------------------+-------------------------------|
| 3.3v | pins 2 & 3, 5 & 6 closed |
|----------------------------+-------------------------------|
| 5.0v | pins 1 & 2, 4 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP46 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 1 & 2 closed |
+------------------------------------------------------------+