INFORMTECH INTERNATIONAL, INC.
286/SUPRA (MODEL B)
|
Processor |
80286 |
|
Processor Speed |
6/8/10/12/16/20MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
4MB |
|
SRAM Cache |
None |
|
BIOS |
Award |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
16-bit external memory card slot, auxillary keyboard connector |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Auxiliary keyboard |
J9 |
Power LED & keylock |
P5 |
|
Turbo LED |
P2 |
External battery |
P8 |
|
Speaker |
P3 |
16-bit external memory card |
S1 |
|
Reset switch |
P4 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
BIOS type select 27256 |
J4 |
pins 2 & 3 closed | |
|
BIOS type select 27128 |
J4 |
pins 1 & 2 closed | |
|
Keyboard controller clock speed select 6MHz |
J5 |
pins 1 & 2 closed | |
|
Keyboard controller clock speed select 12MHz |
J5 |
pins 2 & 3 closed | |
|
Battery type select Alkaline 4.5VDC |
J7 |
closed | |
|
Battery type select Lithium 6VDC |
J7 |
open | |
|
Power good signal detect from power supply |
J8 |
pins 2 & 3 closed | |
|
Power good signal detect from board |
J8 |
pins 1 & 2 closed | |
|
Monitor type select color |
SW1/Switch 3 |
closed | |
|
Monitor type select monochrome |
SW1/Switch 3 |
open | |
|
CPU SPEED/BUS CLOCK CONFIGURATION | ||||||
|
CPU Speed |
AT Bus Speed |
J2 |
J3 |
J10 |
J13 |
J14 |
|
20MHz |
8MHz |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
open |
open |
|
20MHz |
10MHz |
N/A |
pins 1 & 2 |
pins 2 & 3 |
closed |
open |
|
20MHz |
12MHz |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
open |
open |
|
16MHz |
8MHz |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
open |
open |
|
16MHz |
12MHz |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
open |
open |
|
12MHz |
6MHz |
N/A |
pins 2 & 3 |
N/A |
closed |
open |
|
12MHz |
8MHz |
pins 1 & 2 |
pins 2 & 3 |
N/A |
open |
open |
|
12MHz |
12MHz |
pins 2 & 3 |
N/A |
N/A |
open |
closed |
|
10MHz |
10MHz |
N/A |
pins 1 & 2 |
pins 2 & 3 |
closed |
closed |
|
8MHz |
8MHz |
pins 1 & 2 |
N/A |
N/A |
open |
closed |
|
6MHz |
6MHz |
N/A |
pins 2 & 3 |
N/A |
closed |
closed |
|
Note:Pins designated should be in the closed position. | ||||||
|
NPU CLOCK RATE CONFIGUARATION | |||
|
NPU Speed |
Clock Rate |
SW1/Switch 1 |
SW1/Switch 2 |
|
80287-8 |
6MHz |
closed |
closed |
|
80287-8 |
8MHz |
closed |
open |
|
80287-10 |
10MHz |
open |
closed |
|
80287-12 |
12MHz |
open |
open |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
J11 |
J12 |
|
512KB |
(2) 256K x 9 |
NONE |
open |
open |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
closed |
open |
|
2MB |
(2) 1M x 9 |
NONE |
open |
closed |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
closed |
closed |