AMERICAN MEGATRENDS, INC.
MARK IV AT Convertible Screamer
|
Processor |
80386DX/80486DX |
|
Processor Speed |
25/33/40MHz |
|
Chip Set |
C & T |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
355mm x 289mm |
|
I/O Options |
32-bit external CPU/NPU card slot |
|
NPU Options |
80387/3167/4167 (on 32-bit external CPU/NPU card) |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
32-bit external CPU/NPU card |
CN1 |
Turbo LED |
J6 |
|
External battery |
J1 |
Power LED & keylock |
J7 |
|
Speaker |
J4 |
Diagnostic LED |
J8 |
|
Reset switch |
J5 |
Auxiliary keyboard |
JX |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
| » |
Factory configured - do not alter |
J2 |
Open |
| » |
Auxiliary BIOS disabled |
J9 |
Open |
|
Auxiliary BIOS enabled (27512 EPROM installed at U1) |
J9 |
Closed | |
| » |
Factory configured - do not alter |
SW1/1 |
Off |
| » |
Monitor type select monochrome |
SW1/2 |
Off |
|
Monitor type select color |
SW1/2 |
On | |
|
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 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
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 |
|
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 |
|
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 |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
18MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 4M x 9 |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
34MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
36MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 1M x 9 |
NONE |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
40MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
DRAM JUMPER CONFIGURATION | |
|
Size |
J3 |
|
1MB |
closed |
|
2MB |
closed |
|
4MB |
closed |
|
4MB |
open |
|
6MB |
closed |
|
8MB |
closed |
|
DRAM JUMPER CONFIGURATION (CON'T) | |
|
Size |
J3 |
|
8MB |
open |
|
10MB |
closed |
|
12MB |
closed |
|
12MB |
Open |
|
16MB |
Closed |
|
16MB |
Open |
|
16MB |
Open |
|
18MB |
Closed |
|
24MB |
Closed |
|
24MB |
Open |
|
32MB |
Open |
|
34MB |
Closed |
|
36MB |
Open |
|
40MB |
Closed |
|
40MB |
Open |
|
40MB |
Open |
|
48MB |
Open |
|
64MB |
Open |
|
Note:If jumper J3 is open, then PAL M00B2411 must be installed at U68 (factory default). If jumper J3 is closed, then PAL M01B2411 must be installed at U68. | |
|
CACHE CONFIGURATION | |
|
Size |
Bank 0 |
|
64KB |
(8) 8K x 8 |
|
256KB |
(8) 32K x 8 |