EFA CORPORATION
4MHL3S
|
Processor |
CX486SX/80486SX/CX486DX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
64MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP21 |
Reset switch |
JP26 |
|
Power LED & keylock |
JP22 |
Green PC connector |
JP28 |
|
Speaker |
JP23 |
32-bit VESA Local bus slot |
S1 |
|
Turbo LED |
JP24 |
32-bit VESA Local bus slot |
S2 |
|
Turbo switch |
JP25 |
32-bit VESA Local bus slot |
S3 |
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper |
Position |
|
|
|
External battery enabled |
JP1 |
Open |
|
|
Internal battery enabled |
JP1 |
Closed |
|
|
CPU CX486SX & CX487SX enabled |
JP6 |
pins 1 & 2 closed |
|
|
CPU CX486SX & CX487SX disabled |
JP6 |
Open |
|
» |
Trident 9000 video card not installed |
JP8 |
pins 1 & 2 closed |
|
|
Trident 9000 video card installed |
JP8 |
pins 2 & 3 closed |
|
» |
External green card enabled |
JP10 |
pins 2 & 3 closed |
|
|
External green card disabled |
JP10 |
pins 1 & 2 closed |
|
» |
Factory configured - do not alter |
JP13 |
pins 1 & 2 closed |
|
|
32K x 8 TAG enabled |
JP27 |
pins 1 & 2 closed |
|
|
16K x 8 TAG enabled |
JP27 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP29 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP30 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP31 |
Closed |
|
DRAM CONFIGURATION |
|||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(1) 256K x 36 |
NONE |
|
2MB |
(4) 256K x 9 |
NONE |
(1) 256K x 36 |
|
2MB |
NONE |
(1) 256K x 36 |
(1) 256K x 36 |
|
2MB |
NONE |
(1) 512K x 36 |
NONE |
|
2MB |
NONE |
NONE |
(1) 512K x 36 |
|
3MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
3MB |
(4) 256K x 9 |
(1) 512K x 36 |
NONE |
|
3MB |
NONE |
(1) 512K x 36 |
(1) 256K x 36 |
|
3MB |
NONE |
(1) 256K x 36 |
(1) 512K x 36 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
|
4MB |
NONE |
(1) 512K x 36 |
(1) 512K x 36 |
|
4MB |
(4) 256K x 9 |
(1) 512K x 36 |
(1) 256K x 36 |
|
5MB |
(4) 1M x 9 |
(1) 256K x 36 |
NONE |
|
5MB |
(4) 1M x 9 |
NONE |
(1) 256K x 36 |
|
5MB |
NONE |
(1) 1M x 36 |
(1) 256K x 36 |
|
5MB |
NONE |
(1) 256K x 36 |
(1) 1M x 36 |
|
5MB |
(4) 256K x 9 |
(1) 1M x 36 |
NONE |
|
5MB |
(4) 256K x 9 |
NONE |
(1) 1M x 36 |
|
6MB |
(4) 1M x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
6MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 256K x 36 |
|
6MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
6MB |
NONE |
(1) 1M x 36 |
(1) 512K x 36 |
|
6MB |
NONE |
(1) 512K x 36 |
(1) 1M x 36 |
|
7MB |
(4) 1M x 9 |
(1) 512K x 36 |
(1) 256K x 36 |
|
8MB |
(4) 1M x 9 |
(1) 1M x 36 |
NONE |
|
8MB |
(4) 1M x 9 |
NONE |
(1) 1M x 36 |
|
8MB |
NONE |
(1) 1M x 36 |
(1) 1M x 36 |
|
DRAM CONFIGURATION (CONT.) |
|||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
9MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 256K x 36 |
|
9MB |
(4) 1M x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
9MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
10MB |
NONE |
(1) 2M x 36 |
(1) 512K x 36 |
|
10MB |
(4) 1M x 9 |
(1) 512K x 36 |
(1) 1M x 36 |
|
12MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(4) 1M x 9 |
(1) 2M x 36 |
NONE |
|
12MB |
NONE |
(1) 2M x 36 |
(1) 1M x 36 |
|
12MB |
NONE |
(1) 1M x 36 |
(1) 2M x 36 |
|
13MB |
(4) 256K x 9 |
(1) 2M x 36 |
(1) 1M x 36 |
|
13MB |
(4) 1M x 9 |
(1) 2M x 36 |
(1) 256K x 36 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
|
16MB |
(4) 1M x 9 |
(1) 2M x 36 |
(1) 1M x 36 |
|
16MB |
NONE |
(1) 2M x 36 |
(1) 2M x 36 |
|
17MB |
(4) 4M x 9 |
(1) 256K x 36 |
NONE |
|
17MB |
(4) 4M x 9 |
NONE |
(1) 256K x 36 |
|
17MB |
(4) 256K x 9 |
(1) 4M x 36 |
NONE |
|
17MB |
(4) 256K x 9 |
NONE |
(1) 4M x 36 |
|
18MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
18MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
18MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 4M x 36 |
|
19MB |
(4) 4M x 9 |
(1) 512K x 36 |
(1) 256K x 36 |
|
20MB |
(4) 4M x 9 |
(1) 1M x 36 |
NONE |
|
20MB |
(4) 4M x 9 |
NONE |
(1) 1M x 36 |
|
20MB |
(4) 1M x 9 |
(1) 4M x 36 |
NONE |
|
20MB |
(4) 1M x 9 |
NONE |
(1) 4M x 36 |
|
21MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
21MB |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
21MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
21MB |
(4) 1M x 9 |
(1) 256K x 36 |
(1) 4M x 36 |
|
21MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 256K x 36 |
|
21MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
22MB |
(4) 4M x 9 |
(1) 512K x 36 |
(1) 1M x 36 |
|
24MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
24MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
24MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
24MB |
NONE |
(1) 4M x 36 |
(1) 2M x 36 |
|
24MB |
NONE |
(1) 2M x 36 |
(1) 4M x 36 |
|
25MB |
(4) 256K x 9 |
(1) 2M x 36 |
(1) 4M x 36 |
|
25MB |
(4) 4M x 9 |
(1) 2M x 36 |
(1) 256K x 36 |
|
28MB |
(4) 4M x 9 |
(1) 2M x 36 |
(1) 1M x 36 |
|
28MB |
(4) 1M x 9 |
(1) 2M x 36 |
(1) 4M x 36 |
|
32MB |
(4) 4M x 9 |
(1) 4M x 36 |
NONE |
|
32MB |
(4) 4M x 9 |
NONE |
(1) 4M x 36 |
|
32MB |
NONE |
(1) 4M x 36 |
(1) 4M x 36 |
|
DRAM CONFIGURATION (CONT.) |
|||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
33MB |
(4) 256K x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 4M x 36 |
|
33MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 256K x 36 |
|
34MB |
(4) 4M x 9 |
(1) 512K x 36 |
(1) 4M x 36 |
|
36MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
36MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
36MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 1M x 36 |
|
40MB |
(4) 4M x 9 |
(1) 2M x 36 |
(1) 4M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(4) 16M x 9 |
NONE |
NONE |
|
CLOCK GENERATOR CONFIGURATION |
||
|
Clock Type |
JP32 |
JP33 |
|
MX8310 |
pins 1 & 2 closed |
Open |
|
MX8315 |
Open |
Closed |
|
CACHE CONFIGURATION |
|||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION |
|||||
|
Size |
JP15 |
JP16 |
JP17 |
JP19 |
JP20 |
|
32KB |
pins 2 & 3 |
Open |
Open |
Open |
Open |
|
64KB |
pins 1 & 2 |
Open |
Open |
Closed |
Open |
|
128KB |
pins 2 & 3 |
pins 2 & 3 |
Closed |
Closed |
Open |
|
256KB |
pins 1 & 2 |
pins 1 & 2 |
Closed |
Closed |
Closed |
|
Note:Pins designated should be in the closed position. |
|||||
|
CPU TYPE CONFIGURATION |
||
|
Type |
JP9 |
JP11 |
|
80486SX |
Open |
pins 2 & 3 closed |
|
ODP486SX |
pins 2 & 3 closed |
pins 1 & 2, and 3 & 4 closed |
|
CX486SX/CX487SX |
pins 1 & 2 closed |
pins 1 & 2, and 3 & 4 closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2, and 3 & 4 closed |
|
80486DX2 Overdrive |
pins 2 & 3 closed |
pins 1 & 2, and 3 & 4 closed |
|
CPU SPEED CONFIGURATION |
||||
|
Speed |
JP2 |
JP3 |
JP4 |
JP7 |
|
20MHz |
Open |
Open |
Open |
pins 1 & 2 closed |
|
25MHz |
Closed |
Open |
Open |
pins 1 & 2 closed |
|
33MHz |
Closed |
Closed |
Closed |
pins 1 & 2 closed |
|
40MHz |
Closed |
Closed |
Open |
pins 2 & 3 closed |
|
50i MHz |
Closed |
Open |
Open |
pins 1 & 2 closed |
|
50MHz |
Open |
Open |
Closed |
pins 2 & 3 closed |
|
66i MHz |
Closed |
Closed |
Closed |
pins 1 & 2 closed |
|
NPU TYPE CONFIGURATION |
||
|
Type |
JP12 |
JP14 |
|
Intel CPU or CX486SX |
pins 2 & 3 closed |
Open |
|
CX486SX & CX487SX |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
VESA WAIT STATE/BUS SPEED CONFIGURATION |
||
|
CPU speed |
Wait states |
JP18 |
|
£ 33MHz |
0 wait states |
Open |
|
> 33MHz |
1 wait state |
Closed |