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# UNIDENTIFIED
YL-A05
Processor 80386DX
Processor Speed 20/25MHz
Chip Set ACC
Max. Onboard DRAM 8MB
Cache None
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit external memory card slot
NPU Options 80387
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| External battery | JP2 | Turbo LED | JP16 |
|-------------------+----------+------------------+----------|
| Turbo switch | JP13 | Speaker | JP17 |
|-------------------+----------+------------------+----------|
| Power LED & | JP14 | 32-bit external | S1 |
| keylock | | memory card | |
|-------------------+----------+------------------+----------|
| Reset switch | JP15 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery select internal | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery select external | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP4 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Pipeline mode enabled | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Pipeline mode disabled | JP5 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | NPU mode select synchronous | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | NPU mode select asynchronous | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | NPU disabled | JP12 | Open |
|---+----------------------------------+--------+------------|
| | NPU enabled | JP12 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+----------------+------------+----------+----------|
| 1MB | (4) 256K x 9 | NONE | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 1MB | NONE | NONE | (4) 256K | NONE |
| | | | x 9 | |
|--------+----------------+------------+----------+----------|
| 2MB | (4) 256K x 9 | (4) 256K x | NONE | NONE |
| | | 9 | | |
|--------+----------------+------------+----------+----------|
| 2MB | NONE | NONE | (4) 256K | (4) 256K |
| | | | x 9 | x 9 |
|--------+----------------+------------+----------+----------|
| 4MB | (4) 256K x 9 | (4) 256K x | (4) 256K | (4) 256K |
| | | 9 | x 9 | x 9 |
|--------+----------------+------------+----------+----------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 4MB | NONE | NONE | (4) 1M x | NONE |
| | | | 9 | |
|--------+----------------+------------+----------+----------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|--------+----------------+------------+----------+----------|
| 8MB | NONE | NONE | (4) 1M x | (4) 1M x |
| | | | 9 | 9 |
|--------+----------------+------------+----------+----------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (4) 1M x | (4) 1M x |
| | | | 9 | 9 |
|------------------------------------------------------------|
| Notes:Banks 2 & 3 are used when an external proprietary |
| memory card is installed. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP7 | JP8 | JP9 | JP10 | JP11 |
|---------+----------+----------+---------+---------+--------|
| 1MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|---------+----------+----------+---------+---------+--------|
| 1MB | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|---------+----------+----------+---------+---------+--------|
| 2MB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|---------+----------+----------+---------+---------+--------|
| 2MB | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|---------+----------+----------+---------+---------+--------|
| 4MB | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|---------+----------+----------+---------+---------+--------|
| 4MB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|---------+----------+----------+---------+---------+--------|
| 4MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|---------+----------+----------+---------+---------+--------|
| 8MB | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|---------+----------+----------+---------+---------+--------|
| 8MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|---------+----------+----------+---------+---------+--------|
| 16MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Notes:Pins designated should be in the closed position. |
+------------------------------------------------------------+