FIRST INTERNATIONAL COMPUTER, INC.
386-20/25V
|
Processor |
80386DX |
|
Processor Speed |
20/25MHz |
|
Chip Set |
Symphony |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
Award/Phoenix |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card slot |
|
NPU Options |
80387/3167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Reset switch |
J12 |
Power LED & keylock |
J15 |
|
Speaker |
J13 |
32-bit external memory card |
S1 |
|
Turbo LED |
J14 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
Factory configured - do not alter |
J3 |
Open |
| » |
Factory configured - do not alter |
J4 |
Open |
| » |
Memory select 2 wait states/ I/O select 6 wait states |
J5 |
Closed |
|
Memory select 1 wait state/ I/O select 4 wait states |
J5 |
Open | |
|
BIOS type select 27256 |
J6 |
pins 1 & 2 closed | |
|
BIOS type select 27512 |
J6 |
pins 2 & 3 closed | |
|
CPU speed select 20MHz |
J9 |
Open | |
|
CPU speed select 25MHz |
J9 |
Closed | |
| » |
CPU speed select switchable from keyboard |
J15 |
pins 2 & 3 closed |
|
CPU speed select fast |
J15 |
pins 1 & 2 closed | |
|
CPU speed select slow |
J15 |
Open | |
|
Bus speed select iOSC/2 |
J17 |
pins 1 & 2 closed | |
|
Bus speed select 8MHz |
J17 |
pins 2 & 3 closed | |
| » |
Shadow RAM enabled |
SW1/switch 6 |
closed |
|
Shadow RAM disabled |
SW1/switch 6 |
open | |
|
DRAM read select 2 wait states/write select 2 wait states |
SW1/switch 7 SW1/switch 8 |
closed closed | |
|
DRAM read select 2 wait states/write select 1 wait state |
SW1/switch 7 SW1/switch 8 |
closed open | |
|
DRAM read select 1 wait state/write select 1 wait state |
SW1/switch 7 SW1/switch 8 |
open open | |
|
NPU enabled |
SW1/switch 9 |
closed | |
|
NPU disabled |
SW1/switch 9 |
open | |
| » |
Monitor type select monochrome |
SW1/switch 10 |
open |
|
Monitor type select color |
SW1/switch 10 |
closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
|
4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
10MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
Note:Banks 2 & 3 are utilized when a 32-bit external memory card is installed at S1. | ||||
|
DRAM JUMPER/SWITCH CONFIGURATION | ||||||
|
Size |
J7 |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
SW1/5 |
|
1MB |
2 & 3 |
Off |
Off |
Off |
Off |
Off |
|
2MB |
2 & 3 |
On |
Off |
Off |
Off |
Off |
|
3MB |
2 & 3 |
Off |
On |
Off |
Off |
Off |
|
4MB |
2 & 3 |
On |
On |
Off |
Off |
Off |
|
4MB |
1 & 2 |
Off |
Off |
On |
On |
On |
|
6MB |
2 & 3 |
Off |
On |
On |
Off |
Off |
|
8MB |
1 & 2 |
On |
Off |
On |
On |
On |
|
10MB |
2 & 3 |
On |
On |
On |
Off |
Off |
|
12MB |
1 & 2 |
Off |
On |
On |
On |
On |
|
16MB |
1 & 2 |
On |
On |
On |
On |
On |
|
Note:Pins designated should be in the closed position. | ||||||
|
DRAM READ/WRITE CONFIGURATION | |||
|
Wait state |
Read state |
SW1/7 |
SW1/8 |
|
2 |
2 |
On |
On |
|
2 |
1 |
On |
Off |
|
1 |
1 |
Off |
Off |