RELIALOGIC CORPORATION PRIVATE, LTD.
R486 SX25MBC, R486 DX33MBC, R486 DX50MBC, R486 DX2-50MBC, R486 DX2-66MBC
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Processor |
80486SX/80487SX/80486DX/80486DX2 |
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Processor Speed |
25/33/50(internal)/66(internal)MHz |
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Chip Set |
UMC |
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Max. Onboard DRAM |
32MB |
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Cache |
64/128/256KB |
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BIOS |
AMI |
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Dimensions |
330mm x 218mm |
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I/O Options |
None |
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NPU Options |
4167 |
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CONNECTIONS |
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Purpose |
Location |
Purpose |
Location |
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Power LED & keylock |
J1 |
Reset switch |
J4 |
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Speaker |
J2 |
Turbo LED |
J5 |
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Turbo switch |
J3 |
External battery |
J6 |
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USER CONFIGURABLE SETTINGS |
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Function |
Jumper |
Position |
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|
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Battery type select - internal |
W22 |
Closed |
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Battery type select - external |
W22 |
Open |
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Monitor type select monochrome/EGA/VGA |
W18 |
Open |
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Monitor type select CGA |
W18 |
Closed |
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DRAM CONFIGURATION |
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Size |
A |
B |
C |
D |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(1) 256K x 36 |
NONE |
|
4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(1) 1M x 36 |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
9MB |
(4) 256K x 9 |
(4) 1M x 9 |
(1) 1M x 36 |
NONE |
|
10MB |
(4) 256K x 9 |
(4) 256K x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(1) 1M x 36 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(1) 1M x 36 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 4M x 9 |
(1) 1M x 36 |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
40MB |
(4) 4M x 9 |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
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DRAM JUMPER CONFIGURATION |
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Bank |
W12 |
W13 |
W15 |
W16 |
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Bank 0 = A, Bank 1 = B, Bank 2 = C, Bank 3 = D |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
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Bank 0 = C, Bank 1 = D, Bank 2 = A, Bank 3 = B |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
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Note:Pins designated should be in the closed position. |
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CACHE CONFIGURATION |
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Size |
Bank 0 |
Bank 1 |
TAG |
U10 (Dirty Bit) |
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64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 4 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
(1) 16K x 4 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
(1) 16K x 4 |
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CACHE JUMPER CONFIGURATION |
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Size |
W2 |
W3 |
W4 |
W5 |
W6 |
W7 |
W8 |
W9 |
|
64KB |
1 & 2 |
1 & 2 |
Open |
1 & 2 |
Open |
Open |
Open |
Open |
|
128KB |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
Closed |
Open |
Open |
Closed |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
1 & 2 |
Closed |
Closed |
Closed |
Closed |
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Note:Pins designated should be in the closed position. |
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CPU TYPE CONFIGURATION |
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|
Type |
W10 |
W11 |
|
80486SX |
Open |
pins 2 & 3 closed |
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80487SX |
pins 2 & 3 closed |
pins 1 & 2, 3 & 4 closed |
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80486DX |
pins 1 & 2 closed |
pins 1 & 2, 3 & 4 closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2, 3 & 4 closed |