EFA CORPORATION
ECA 34M50FL
|
Processor |
80386DX/CX486DLC/80486SX/80486DX/80486DX2 |
|
Processor Speed |
16/20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
80387DX |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Turbo Switch |
J13 |
|
Power LED & keylock |
J10 |
Turbo LED |
J14 |
|
Speaker |
J11 |
Chassis fan power |
J15 |
|
Reset switch |
J12 |
32-bit VESA Local bus slots |
S1 & S2 |
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper |
Position |
|
|
|
CMOS memory normal operation |
W1 |
pins 1 & 2 closed |
|
|
CMOS memory clear |
W1 |
pins 2 & 3 closed |
|
|
On board battery enabled |
W2 |
pins 1 & 2 closed |
|
|
On board battery disabled |
W2 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
W14 |
Open |
|
DRAM CONFIGURATION |
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|
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 |
|
CACHE CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
TAG/U24 |
Dirty Bit/U37 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
(1) 16K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
(1) 16K x 8 |
|
CACHE JUMPER CONFIGURATION |
||||||||
|
Size |
W5 |
W6 |
W7 |
W8 |
W9 |
W10 |
W11 |
W12 |
|
64KB |
1 & 2 |
1 & 2 |
1 & 2 |
Open |
Open |
Open |
Open |
Open |
|
128KB |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
Open |
Closed |
Open |
Closed |
|
256KB |
2 & 3 |
2 & 3 |
1 & 2 |
2 & 3 |
Closed |
Closed |
Closed |
Closed |
|
Note:Pins designated should be in the closed position. |
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|
CPU TYPE CONFIGURATION |
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|
Type |
SW3/1 |
SW3/2 |
SW3/3 |
SW3/4 |
SW3/5 |
SW3/6 |
|
CX486DLC |
Off |
On |
On |
Off |
Off |
Off |
|
80486SX/20 |
Off |
Off |
Off |
On |
On |
Off |
|
80486SX/25 |
Off |
Off |
Off |
Off |
On |
Off |
|
80486SX (PQFP) |
Off |
Off |
Off |
Off |
Off |
Off |
|
80486DX |
Off |
On |
On |
Off |
Off |
Off |
|
80486DX (PQFP) |
On |
Off |
Off |
Off |
Off |
On |
|
ODP486SX |
Off |
On |
On |
Off |
Off |
Off |
|
80486DX2 |
Off |
On |
On |
Off |
Off |
Off |
|
CPU TYPE CONFIGURATION (CONT.) |
||
|
Type |
Pins |
J9 |
|
80486SX |
168 |
pins 1 & 2 closed |
|
80486SX/80486DX2 |
168 Overdrive |
pins 1 & 2 closed |
|
80486DX |
168 Overdrive |
pins 2 & 3 closed |
|
80486DX |
169 Overdrive |
pins 1 & 2 closed |
|
80486DX/80486DX2 |
168 |
pins 2 & 3 closed |
|
CPU TYPE CONFIGURATION (CONT.) |
||||||
|
Type |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
SW2/6 |
|
80386 |
On |
On |
On |
On |
On |
On |
|
80486 |
Off |
Off |
Off |
Off |
Off |
Off |
|
NPU TYPE CONFIGURATION |
|
|
Type |
SW2/switch 7 |
|
80387DX enabled |
On |
|
80387DX disabled |
Off |
|
CPU TYPE CONFIGURATION (CONT.) |
|
|
Type |
J5 |
|
80486SX |
pins 2 & 3 closed |
|
80486DX |
pins 2 & 3 closed |
|
ODP486SX |
pins 1 & 2 closed |
|
80486DX2 |
pins 2 & 3 closed |
|
Note:This only applies when the 80486SX/DX PQFP is disabled. |
|
|
CPU SPEED CONFIGURATION |
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|
CPU |
Speed |
Osc. |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
80386DX |
16MHz |
16MHz |
On |
On |
On |
On |
|
80386DX |
16MHz |
16MHz |
On |
On |
Off |
Off |
|
80386DX |
20MHz |
20MHz |
On |
On |
On |
Off |
|
80386DX |
33MHz |
33MHz |
On |
Off |
On |
On |
|
80386DX |
40MHz |
80MHz |
On |
Off |
Off |
Off |
|
80486SX |
20MHz |
40MHz |
Off |
Off |
On |
Off |
|
80486SX |
25MHz |
25MHz |
On |
On |
Off |
On |
|
80487SX |
20MHz |
40MHz |
Off |
Off |
On |
Off |
|
80487SX |
25MHz |
25MHz |
On |
On |
Off |
On |
|
80486DX |
25MHz |
25MHz |
On |
On |
Off |
On |
|
80486DX |
33MHz |
33MHz |
On |
Off |
On |
On |
|
80486DX |
50MHz |
50MHz |
Off |
Off |
Off |
Off |
|
ODP486SX |
50i MHz |
25MHz |
On |
On |
Off |
On |
|
ODP486SX |
66i MHz |
33MHz |
On |
Off |
On |
On |
|
80486DX2 |
50i MHz |
25MHz |
On |
On |
Off |
On |
|
80486DX2 |
66i MHz |
33MHz |
On |
Off |
On |
On |
|
VESA WAIT STATE/BUS SPEED CONFIGURATION |
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|
CPU speed |
Wait states |
J4 |
J6 |
J7 |
|
Auto detect |
Auto select |
Closed |
Open |
Closed |
|
£ 33MHz |
0 wait states |
Closed |
Closed |
Open |
|
> 33MHz |
1 wait state |
Open |
Closed |
Closed |