TEXT View Source
# UNIDENTIFIED
OPTI-495SLC-3/486WB CACHE
Processor 80386DX/80486SX/80486DX /80486DX2/ODP486SX
Processor Speed 25/33/40/50/66(internal)MHz
Chip Set OPTI
Max. Onboard DRAM 64MB
Cache 64/128/256KB
BIOS AMI
Dimensions 249mm x 218mm
I/O Options 32-bit VESA local bus slots (2),
NPU Options 80387DX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+----------+----------------------+----------|
| Power LED & | J1 | Turbo LED | J5 |
| keylock | | | |
|---------------+----------+----------------------+----------|
| Speaker | J2 | External battery | J6 |
|---------------+----------+----------------------+----------|
| Turbo switch | J3 | 32-bit VESA Local | S1 |
| | | bus slots | |
|---------------+----------+----------------------+----------|
| Reset switch | J4 | 32-bit VESA Local | S2 |
| | | bus slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|---------------------------------+---------------+----------|
| » | Monitor type select color | JP21 | open |
|---+-----------------------------+---------------+----------|
| | Monitor type select | JP21 | closed |
| | monochrome | | |
|---+-----------------------------+---------------+----------|
| » | Factory configured - do not | JP23 | open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (4) 256K x 9 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (4) 256K x 9 | (4) 256K x 9 |
|------------------+--------------------+--------------------|
| 4MB | (4) 1M x 9 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 16MB | (4) 4M x 9 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 20MB | (4) 4M x 9 | (4) 1M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG(U18) | TAG(U19) |
|-------+-------------+-------------+------------+-----------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | NONE |
|-------+-------------+-------------+------------+-----------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | NONE |
|-------+-------------+-------------+------------+-----------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 8K x 8 | (1) 8K x |
| | | | | 8 |
|-------+-------------+-------------+------------+-----------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x | NONE |
| | | | 8 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE SIZE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP16 | JP17 |
|-------+-----------------+----------------+--------+--------|
| 64KB | pins 2 & 3 | pins 2 & 3 | open | open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 128KB | pins 1 & 2 | pins 1 & 2 | closed | open |
| | closed | closed | | |
|-------+-----------------+----------------+--------+--------|
| 256KB | pins 2 & 3 | pins 2 & 3 | closed | closed |
| | closed | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 80386 AND CX80486DLC CPU CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP6 | JP7 | JP8 | JP9 | JP22 |
|---------+---------+---------+---------+------------+-------|
| 33MHz | closed | closed | open | pins 2 & 3 | open |
|---------+---------+---------+---------+------------+-------|
| 33MHz | closed | closed | open | pins 2 & 3 | open |
|---------+---------+---------+---------+------------+-------|
| 40MHz | closed | closed | closed | pins 2 & 3 | open |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECT |
|------------------------------------------------------------|
| CPU Type | JP2 | JP14 | JP15 | JP18 |JP19|JP20|JP25|JP27|
|-------------+-----+------+------+------+----+----+----+----|
|80386DX(PQFP)| N/A | open | open | N/A |N/A |2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------------+-----+------+------+------+----+----+----+----|
|80386DX(PGA) | N/A | open |closed| N/A |N/A |2 & |1 & |1 & |
| | | | | | | 3 | 2 | 2 |
|-------------+-----+------+------+------+----+----+----+----|
|80486DLC(PGA)| N/A |closed|closed| N/A |N/A |1 & |2 & |2 & |
| | | | | | | 2 | 3 | 3 |
|-------------+-----+------+------+------+----+----+----+----|
|80486SX(PGA) |open |closed|closed| open |2 & |1 & |2 & |2 & |
| | | | | | 3 | 2 | 3 | 3 |
|-------------+-----+------+------+------+----+----+----+----|
| 80487SX |2 & 3| N/A | N/A |closed|1 & |N/A |N/A |N/A |
| | | | | | 2 | | | |
|-------------+-----+------+------+------+----+----+----+----|
| 80486DX |1 & 2|closed|closed|closed|1 & |1 & |2 & |2 & |
| | | | | | 2 | 2 | 3 | 3 |
|-------------+-----+------+------+------+----+----+----+----|
| ODP80486 |2 & 3|closed|closed|closed|1 & |1 & |2 & |2 & |
| | | | | | 2 | 2 | 3 | 3 |
|-------------+-----+------+------+------+----+----+----+----|
| 80486DX2 |1 & 2|closed|closed|closed|1 & |1 & |2 & |2 & |
| | | | | | 2 | 2 | 3 | 3 |
|------------------------------------------------------------|
|Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU Type | JP6 | JP7 | JP8 | JP9 | JP22 |
|-----------+-------+---------+--------+------------+--------|
| 25MHz | open | open | open | pins 1 & 2 | closed |
|-----------+-------+---------+--------+------------+--------|
| 33MHz | open | open | closed | pins 1 & 2 | open |
|-----------+-------+---------+--------+------------+--------|
| 40MHz | open | closed | closed | pins 1 & 2 | open |
|-----------+-------+---------+--------+------------+--------|
| 50i MHz | open | open | open | pins 1 & 2 | closed |
|-----------+-------+---------+--------+------------+--------|
| 50MHz | open | closed | open | pins 1 & 2 | open |
|-----------+-------+---------+--------+------------+--------|
| 66i MHz | open | open | closed | pins 1 & 2 | open |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+