AMERICAN MEGATRENDS, INC.
386/486 MARK III CONVERTIBLE
|
Processor |
80386DX (80486DX on MARK III adapter) |
|
Processor Speed |
25/33MHz |
|
Chip Set |
AMI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card slot, CPU/NPU expansion card slot |
|
NPU Options |
80387 (3167/4167 on MARK III adapter) |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Turbo switch |
J8 |
|
Turbo LED |
J5 |
Reset switch |
J14 |
|
Speaker |
J6 |
32-bit external memory card |
P10 |
|
Power LED & keylock |
J7 |
CPU/NPU expansion card |
P13 |
|
USER CONFIGURABLE SETTINGS | ||||
|
Function |
Jumper/Switch |
Position | ||
|
DRAM address sequence select bank 0, then bank 1 |
J3 |
pins 1 & 2, 3 & 4 closed | ||
|
DRAM address sequence select bank 1, then bank 0 |
J3 |
pins 2 & 3, 4 & 5 closed | ||
|
CMOS memory normal operation |
J4 |
Open | ||
|
CMOS memory clear |
J4 |
Closed | ||
|
Factory configured - do not alter |
SW1/switch 1 |
Off | ||
|
Monitor type select color |
SW1/switch 2 |
On | ||
|
Monitor type select monochrome |
SW1/switch 2 |
Off | ||
|
Note : Cache is factory installed and is not configurable. The size of the cache & tag are unidentified. | ||||
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |