CHAINTECH COMPUTER COMPANY, LTD.
416SX/420SX/425SX/433SC/450SC
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
16/20/25/33/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
64MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
Reset switch |
J1 |
Speaker |
J4 |
|
Turbo switch |
J2 |
Power LED & keylock |
J5 |
|
Turbo LED |
J3 |
External battery |
J7 |
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper |
Position |
|
|
» |
Turbo enabled |
J2 |
Closed |
|
|
Turbo disabled |
J2 |
Open |
|
» |
Monitor type select monochrome |
J6 |
Open |
|
|
Monitor type select color |
J6 |
Closed |
|
» |
Factory configured - do not alter |
JP7 |
Open |
|
» |
CMOS memory normal operation |
JP17 |
pins 1 & 2 closed |
|
|
CMOS memory clear |
JP17 |
pins 2 & 3 closed |
|
» |
Factory configured - do not alter |
JP18 |
Open |
|
DRAM CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
|
1MB |
(1) 256K x 36 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
NONE |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
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 |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
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 |
(1) 1M x 36 |
(1) 1M x 36 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
NONE |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
18MB |
(4) 256K x 9 |
(4) 256K x 9 |
(1) 4M x 36 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(1) 4M x 36 |
NONE |
|
24MB |
(1) 4M x 36 |
(1) 1M x 36 |
(4) 1M x 9 |
NONE |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
36MB |
(1) 1M x 36 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
36MB |
(4) 4M x 9 |
(4) 4M x 9 |
(1) 1M x 36 |
NONE |
|
36MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 1M x 9 |
NONE |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(4) 4M x 9 |
(4) 4M x 9 |
|
40MB |
(4) 4M x 9 |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
40MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 1M x 9 |
(4) 1M x 9 |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(1) 4M x 36 |
NONE |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 4M x 9 |
NONE |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 4M x 9 |
(4) 4M x 9 |
|
DRAM JUMPER CONFIGURATION |
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|
Type |
JP1 |
JP2 |
JP20 |
JP21 |
|
Option 1 |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
Option 2 |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
Note: Option 1- Banks 0 & 1 use x 9 SIMMS and Banks 2 & 3 use X 36 SIMMS. Option 2- Banks 0 & 1 use x 36 SIMMS and Banks 2 & 3 use X 9 SIMMS. |
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|
CACHE CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
|
32KB |
(4) 8K x 8 |
NONE |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
CACHE JUMPER CONFIGURATION |
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|
Size |
JP8 |
JP9 |
JP10 |
JP11 |
|
32KB |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
64KB |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
128KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
256KB |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
CACHE JUMPER CONFIGURATION (CON'T) |
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|
Size |
JP12 |
JP13 |
JP14 |
JP15 |
JP16 |
|
32KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
64KB |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
128KB |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. |
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CPU TYPE CONFIGURATION |
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|
Type |
JP4 |
JP5 |
JP6 |
|
80486SX |
pins 2 & 3 closed |
Open |
Open |
|
ODP486SX |
pins 1 & 2 closed |
Closed |
pins 2 & 3 closed |
|
80487SX |
pins 1 & 2 closed |
Closed |
pins 2 & 3 closed |
|
80486DX |
pins 1 & 2 closed |
Closed |
pins 1 & 2 closed |
|
80486DX2 |
pins 1 & 2 closed |
Closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION |
|
|
Speed |
JP3 |
|
16MHz |
pins 2 & 3 closed |
|
20MHz |
pins 2 & 3 closed |
|
> 25MHz |
pins 1 & 2 closed |
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MISCELLANEOUS TECHNICAL NOTE |
|
Note:Depending on board version, cache and accompanying jumpers may not be present. |