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 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo switch |
J1 |
Power LED & keylock |
J6 |
|
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 switchable at turbo switch |
J2 |
pins 1 & 2 closed |
|
CPU Speed select switchable at keyboard |
J2 |
pins 2 & 3 closed | |
| » |
DMA clock speed select iOSC/2 |
J4 |
pins 2 & 3 closed |
|
DMA clock speed select iOSC/1 |
J4 |
pins 1 & 2 closed | |
| » |
DRAM access speed select 8MHz |
J10 |
pins 1 & 2 closed |
|
DRAM access speed select 12MHz |
J10 |
pins 2 & 3 closed | |
| » |
BIOS access speed select 8MHz |
J11 |
pins 2 & 3 closed |
|
BIOS access speed select 12MHz |
J11 |
pins 1 & 2 closed | |
| » |
DMA clock slow down enabled |
J12 |
pins 1 & 2 closed |
|
DMA clock slow down disabled |
J12 |
pins 2 & 3 closed | |
| » |
Keyboard controller speed select 8MHz |
J13 |
pins 1 & 2 closed |
|
Keyboard controller speed select 4MHz |
J13 |
pins 2 & 3 closed | |
| » |
NPU speed select 8MHz |
J14 |
pins 2 & 3 closed |
|
NPU speed select 4.77MHz |
J14 |
pins 1 & 2 closed | |
| » |
Battery type select internal |
J17 |
Closed |
|
Battery type select external |
J17 |
Open | |
| » |
Battery charge mode select normal |
J18 |
Open |
|
Battery charge mode select fast |
J18 |
Closed | |
| » |
Monitor type select color |
S1/3 |
On |
|
Monitor type select monochrome |
S1/3 |
Off | |
|
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 |