AMERICAN MEGATRENDS, INC.
SERIES 64 BABY EISA
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
20/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Mouse port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Mouse |
J2 |
Power LED & keylock |
J30 |
|
Speaker |
J22 |
Reset switch |
J31 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
CPU speed select iOSC/2 |
J3 |
pins 1 & 2 closed | |
|
CPU speed select iOSC/1 |
J3 |
pins 2 & 3 closed | |
|
Channel ready signal select IOCHRDY (ISA only) |
J29 |
Open | |
|
Channel ready signal select EXRDY (EISA only) |
J29 |
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 |
|
4MB |
(4) 1M x 9 |
NONE |
|
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 |
|
64MB |
(4) 16M x 9 |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
J14 |
J15 |
J18 |
J19 |
J28 |
|
64KB |
Open |
Open |
Open |
Open |
2 & 3 |
|
256KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
Note:Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | ||
|
Type |
Location |
J9 |
|
80486SX |
Primary |
pins 2 & 3 closed |
|
OPD486SX |
Upgrade |
pins 1 & 2, 3 & 4 closed |
|
80487SX |
Upgrade |
pins 1 & 2, 3 & 4 closed |
|
80486DX |
Primary |
pins 1 & 2, 3 & 4 closed |
|
80486DX2 |
Primary |
pins 1 & 2, 3 & 4 closed |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
J6 |
J16 |
J17 |
J27 |
|
20MHz |
Closed |
Open |
Open |
pins 2 & 3 closed |
|
25MHz |
Open |
Open |
Open |
pins 1 & 2 closed |
|
33MHz |
Open |
Open |
Closed |
pins 1 & 2 closed |
|
50iMHz |
Open |
Open |
Open |
pins 1 & 2 closed |
|
50MHz |
Open |
Closed |
Closed |
pins 1 & 2 closed |
|
66iMHz |
Open |
Open |
Closed |
pins 1 & 2 closed |