AMERICAN DIGICOM CORPORATION
286H
|
Processor |
80286 |
|
Processor Speed |
12/16/20MHz |
|
Chip Set |
Suntac |
|
Max. onboard DRAM |
5MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
IDE interface, floppy drive interface |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
IDE interface |
CN1 |
Turbo Switch |
JP27 |
|
Floppy drive interface |
CN2 |
Turbo LED |
JP28 |
|
External battery |
JP9 |
Speaker |
JP29 |
|
IDE interface LED |
JP17 |
Power LED & keylock |
JP30 |
|
Reset switch |
JP26 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
| » |
Floppy drive address select 3F4-3F5h |
JP5 |
Closed |
|
Floppy drive address select 374-375h |
JP5 |
Open | |
| » |
BIOS type select 27256 |
JP6 & JP18 |
pins 1 & 2 closed |
|
BIOS type select 27512 |
JP6 & JP18 |
pins 2 & 3 closed | |
| » |
Floppy drive enabled |
JP10 |
Closed |
|
Floppy drive disabled |
JP10 |
Open | |
| » |
Floppy drive speed select 12MHz |
JP11 |
Closed |
|
Floppy drive speed select low 16/20MHz |
JP11 |
Open | |
| » |
NPU speed select low (12MHz CPU) |
JP19 & JP20 |
pins 1 & 2 closed |
|
NPU speed select high (16/20MHz CPU) |
JP19 & JP20 |
pins 2 & 3 closed | |
| » |
I/O bus speed select OSC1/4 for 12/16MHz |
JP25 |
Closed |
|
I/O bus speed select OSC2/2 for 12/16MHz |
JP25 |
Open | |
| » |
Monitor type select color |
SW1/switch 1 |
On |
|
Monitor type select monochrome |
SW1/switch 1 |
Off | |
| » |
Parity enabled |
SW1/switch 2 |
On |
|
Parity disabled |
SW1/switch 2 |
Off | |
|
Note:For a 20Mhz CPU, JP25 should remain open. | |||
|
DRAM CONFIGURATION | ||||||
|
Size |
Bank 0 |
Parity 0 |
Bank 1 |
Parity 1 |
Bank 2 |
Bank 3 |
|
512KB |
(4) 44256 |
(2) 41256 |
NONE |
NONE |
NONE |
NONE |
|
512KB |
NONE |
NONE |
NONE |
NONE |
(2) 256K x 9 |
NONE |
|
1MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
NONE |
NONE |
|
1MB |
NONE |
NONE |
NONE |
NONE |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
NONE |
NONE |
NONE |
NONE |
(2) 1M x 9 |
NONE |
|
3MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
(2) 1M x 9 |
NONE |
|
4MB |
NONE |
NONE |
NONE |
NONE |
(2) 1M x 9 |
(2) 1M x 9 |
|
5MB |
(4) 44256 |
(2) 41256 |
(4) 44256 |
(2) 41256 |
(2) 1M x 9 |
(2) 1M x 9 |
|
Note:You may use SIPP modules as bank 0 and bank 1. | ||||||
|
DRAM SWITCH CONFIGURATION | |||
|
Size |
SW1/switch 3 |
SW1/switch 4 |
SW1/switch 5 |
|
512KB |
On |
On |
On |
|
1MB |
On |
On |
Off |
|
2MB |
On |
Off |
Off |
|
2MB |
Off |
On |
On |
|
3MB |
Off |
Off |
On |
|
4MB |
Off |
On |
Off |
|
5MB |
On |
Off |
On |
|
MODULE RAM BANK CONFIGURATION | ||||
|
Bank |
JP21 |
JP22 |
JP23 |
JP24 |
|
SIP RAM as banks 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
SIP RAM as banks 0 & 1 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. | ||||
|
MEMORY MAP CONFIGURATION | |||||
|
Base Memory |
Shadow |
Extended |
SW1/6 |
SW1/7 |
SW1/8 |
|
640KB |
0KB |
remaining memory |
On |
On |
On |
|
640KB |
128KB |
remaining memory |
On |
On |
Off |
|
512KB |
0KB |
remaining memory |
On |
Off |
On |
|
512KB |
128KB |
remaining memory |
Off |
On |
On |
|
640KB |
EMS |
64KB |
Off |
Off |
On |
|
640KB |
EMS |
0KB |
Off |
On |
Off |
|
512KB |
EMS |
64KB |
Off |
Off |
On |
|
512KB |
EMS |
0KB |
Off |
Off |
Off |
|
IDE INTERFACE CONFIGURATION | ||
|
Function |
JP14 |
JP15 |
|
Enabled |
pins 2 & 3 |
pins 2 & 3 |
|
Disabled |
pins 1 & 2 |
pins 1 & 2 |