AMERICAN DIGICOM CORPORATION
DIGIS-286C
|
Processor |
80286 (exact location unknown) |
|
Processor Speed |
12MHz |
|
Chip Set |
Suntac |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
Award/Phoenix |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J19 |
Turbo LED |
JP4 |
|
Power LED & keylock |
J20 |
Turbo switch |
JP5 |
|
External battery |
J21 |
Reset switch |
JP6 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
» |
CPU clock speed select high |
DSP1/1 |
On |
|
CPU clock speed select low |
DSP1/1 |
Off | |
|
» |
Factory configured - do not alter |
DSP1/2 |
On |
|
» |
I/O wait state select 4 wait states |
DSP1/3 |
On |
|
I/O wait state select 6 wait states |
DSP1/3 |
Off | |
|
» |
EMS port address select 0EBH |
DSP1/4 |
On |
|
EMS port address select 098H |
DSP1/4 |
Off | |
|
» |
RAM size select 256KB |
J18 |
pins 1 & 2 closed |
|
RAM size select 512KB |
J18 |
pins 2 & 3 closed | |
|
» |
CPU clock speed select high |
JP1 |
Open |
|
CPU clock speed select low |
JP1 |
pins 2 & 3 closed | |
|
» |
I/O wait control select keyboard |
JP3 |
pins 1 & 2 closed |
|
I/O wait control select DSP1/3 |
JP3 |
pins 2 & 3 closed | |
|
» |
Turbo enabled |
JP4 |
Closed |
|
Turbo disabled |
JP4 |
Open | |
|
» |
BIOS type select Phoenix |
JP7 |
pins 1 & 2 closed |
|
BIOS type select Award |
JP7 |
pins 2 & 3 closed | |
|
» |
DRAM mode select expanded |
JP8 |
Open |
|
DRAM mode select extended |
JP8 |
Closed | |
|
» |
DRAM wait state select 1 wait state |
JP19 |
Open |
|
DRAM wait state select 0 wait states |
JP19 |
Closed | |
|
Note: The location of DSP1 is unknown. | |||
|
DRAM CONFIGURATION | ||||||
|
Mode |
Size |
Base |
Extended |
Expanded |
Bank 0 |
Bank 1 |
|
0 |
512KB |
512KB |
0KB |
0KB |
(18) 41256 |
NONE |
|
1 |
640KB |
640KB |
0KB |
0KB |
(18) 41256 |
(18) 4164 |
|
2 |
1MB |
640KB |
384KB |
0KB |
(18) 41256 |
(18) 41256 |
|
3 |
1MB |
640KB |
0KB |
384KB |
(18) 41256 |
(18) 41256 |
|
4 |
2MB |
640KB |
1408KB |
0KB |
(18) 411000 |
NONE |
|
5 |
2MB |
640KB |
0KB |
1408KB |
(18) 411000 |
NONE |
|
6 |
4MB |
640KB |
3456KB |
0KB |
(18) 411000 |
(18) 411000 |
|
7 |
4MB |
640KB |
0KB |
3456KB |
(18) 411000 |
(18) 411000 |
|
DRAM SWITCH CONFIGURATION | |||
|
Mode |
DSP1/6 |
DSP1/7 |
DSP1/8 |
|
0 |
On |
On |
On |
|
1 |
On |
On |
Off |
|
2 |
On |
Off |
On |
|
3 |
On |
Off |
Off |
|
4 |
Off |
On |
On |
|
5 |
Off |
On |
Off |
|
6 |
Off |
Off |
On |
|
7 |
Off |
Off |
Off |
|
Note: The location of DSP1 is unknown. | |||
|
BIOS CONFIGURATION | ||
|
Size |
DSP1/5 |
JP9 |
|
27128 |
On |
pins 1 & 2 closed |
|
27256 |
Off |
pins 2 & 3 closed |