TEXT View Source
# SINGA
286/12
Processor 80286
Processor Speed 12/16/20MHz
Chip Set C & T
Max. Onboard DRAM 1MB
Cache None
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options None
NPU Options 80287
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| Turbo switch | J1 | Power LED & | J6 |
| | | keylock | |
|------------------+----------+-------------------+----------|
| External battery | J3 | Reset switch | J15 |
|------------------+----------+-------------------+----------|
| Speaker | J5 | Turbo LED | J16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper/Switch | Position |
|-------------------------------+---------------+------------|
| » | CPU speed select 12MHz | J1 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | CPU speed select 8MHz | J1 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | CPU Speed select | J2 | pins 1 & 2 |
| | switchable at turbo | | closed |
| | switch | | |
|---+---------------------------+---------------+------------|
| | CPU Speed select | J2 | pins 2 & 3 |
| | switchable at keyboard | | closed |
|---+---------------------------+---------------+------------|
| » | DMA clock speed select | J4 | pins 2 & 3 |
| | iOSC/2 | | closed |
|---+---------------------------+---------------+------------|
| | DMA clock speed select | J4 | pins 1 & 2 |
| | iOSC/1 | | closed |
|---+---------------------------+---------------+------------|
| » | DRAM access speed select | J10 | pins 1 & 2 |
| | 8MHz | | closed |
|---+---------------------------+---------------+------------|
| | DRAM access speed select | J10 | pins 2 & 3 |
| | 12MHz | | closed |
|---+---------------------------+---------------+------------|
| » | BIOS access speed select | J11 | pins 2 & 3 |
| | 8MHz | | closed |
|---+---------------------------+---------------+------------|
| | BIOS access speed select | J11 | pins 1 & 2 |
| | 12MHz | | closed |
|---+---------------------------+---------------+------------|
| » | DMA clock slow down | J12 | pins 1 & 2 |
| | enabled | | closed |
|---+---------------------------+---------------+------------|
| | DMA clock slow down | J12 | pins 2 & 3 |
| | disabled | | closed |
|---+---------------------------+---------------+------------|
| » | Keyboard controller speed | J13 | pins 1 & 2 |
| | select 8MHz | | closed |
|---+---------------------------+---------------+------------|
| | Keyboard controller speed | J13 | pins 2 & 3 |
| | select 4MHz | | closed |
|---+---------------------------+---------------+------------|
| » | NPU speed select 8MHz | J14 | pins 2 & 3 |
| | | | closed |
|---+---------------------------+---------------+------------|
| | NPU speed select 4.77MHz | J14 | pins 1 & 2 |
| | | | closed |
|---+---------------------------+---------------+------------|
| » | Battery type select | J17 | Closed |
| | internal | | |
|---+---------------------------+---------------+------------|
| | Battery type select | J17 | Open |
| | external | | |
|---+---------------------------+---------------+------------|
| » | Battery charge mode | J18 | Open |
| | select normal | | |
|---+---------------------------+---------------+------------|
| | Battery charge mode | J18 | Closed |
| | select fast | | |
|---+---------------------------+---------------+------------|
| » | Monitor type select color | S1/3 | On |
|---+---------------------------+---------------+------------|
| | Monitor type select | S1/3 | Off |
| | monochrome | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 256KB | (18) 4164 | (18) 4164 |
|------------------+--------------------+--------------------|
| 512KB | (18) 41256 | NONE |
|------------------+--------------------+--------------------|
| 640KB | (18) 41256 | (18) 4164 |
|------------------+--------------------+--------------------|
| 1MB | (18) 41256 | (18) 41256 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | S1/1 | S1/2 | S1/4 |
|------------------+-------------+-------------+-------------|
| 256KB | On | On | Off |
|------------------+-------------+-------------+-------------|
| 512KB | Off | On | Off |
|------------------+-------------+-------------+-------------|
| 640KB | On | Off | Off |
|------------------+-------------+-------------+-------------|
| 1MB (512KB base) | Off | Off | Off |
|------------------+-------------+-------------+-------------|
| 1MB (640KB base) | Off | Off | On |
+------------------------------------------------------------+