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# CHICONY, INC.
CH-486DLC-33/40H(L)
Processor 80486DX
Processor Speed 33/40MHz
Chip Set OPTI
Max. Onboard DRAM 32MB
Cache None
BIOS AMI
Dimensions 220mm x 220mm
I/O Options None
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | JP1 | Reset switch | JP21 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP19 | Turbo switch | JP22 |
|---------------------+----------+----------------+----------|
| Turbo LED | JP20 | Speaker | JP23 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery type select internal | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | JP1 | Closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP9 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP12 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP12 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP16 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP17 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP18 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CPU speed select 33MHz | JP24 | Closed |
|---+----------------------------------+--------+------------|
| | CPU speed select 40MHz | JP24 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 32KB | (4) 8K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 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) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP4 | JP5 | JP6 | JP7 | JP8 | JP10 | JP11 |
|-------+------+------+------+-----+-----+-----+------+------|
| 32KB | 1 & | 1 & | 1 & | 1 & | 1 & | 1 & | Open | 2 & |
| | 2 | 2 | 2 | 2 | 2 | 2 | | 3 |
|-------+------+------+------+-----+-----+-----+------+------|
| 64KB | 1 & | 2 & | 1 & | 2 & | 1 & | 1 & | Open | 1 & |
| | 2 | 3 | 2 | 3 | 2 | 2 | | 2 |
|-------+------+------+------+-----+-----+-----+------+------|
| 128KB | 2 & | 2 & | 1 & | 2 & | 2 & | 1 & | 1 & | 2 & |
| | 3 | 3 | 2 | 3 | 3 | 2 | 2 | 3 |
|-------+------+------+------+-----+-----+-----+------+------|
| 256KB | 2 & | 2 & | 2 & | 2 & | 2 & | 2 & | 2 & | 1 & |
| | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK SOURCE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP25 | JP26 | JP27 |
|---------------+--------------+--------------+--------------|
| AV9107 | Open | Open | Open |
|---------------+--------------+--------------+--------------|
| OSC | Closed | Closed | Closed |
+------------------------------------------------------------+