CHAINTECH COMPUTER COMPANY, LTD.
486SCSL/486SCSI
|
Processor |
CX486S/CX486S & CX487S/80486SX/80487SX/AMD486DX/80486DX/ ODP486SX/ 80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
265mm x 220mm |
|
I/O Options |
32-bit VESA local bus slots (2) (486SCSL only) |
|
NPU Options |
None |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Power LED & keylock |
J5 |
|
Turbo LED |
J2 |
Reset switch |
J6 |
|
Turbo switch |
J3 |
32-bit VESA local bus slots |
SL1 & SL2 |
|
Speaker |
J4 |
|
|
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper |
Position |
|
|
» |
Turbo switch select low |
J3 |
Open |
|
|
Turbo switch select high |
J3 |
Closed |
|
» |
CMOS memory normal operation |
JP12 |
Pins 1 & 2 closed |
|
|
CMOS memory clear |
JP12 |
Pins 2 & 3 closed |
|
» |
PQFP CPU disabled |
JP16 |
Closed |
|
|
PQFP CPU enabled |
JP16 |
Open |
|
DRAM CONFIGURATION |
||
|
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 |
|
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 |
|
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 or (1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION |
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|
Size |
JP1 |
JP2 |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
|
64KB |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
Open |
1 & 2 |
|
128KB |
2 & 3 |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
2 & 3 |
|
256KB |
2 & 3 |
2 & 3 |
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 |
JP13 |
JP14 |
JP15 |
|
CX486S |
Open |
Pins 2 & 3 closed |
Open |
|
CX486S & CX487S |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Closed |
|
80486SX (PQFP) |
Open |
Pins 2 & 3 closed |
Open |
|
80486SX (PGA) |
Open |
Pins 2 & 3 closed |
Open |
|
ODP486SX |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Closed |
|
80487SX |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Closed |
|
AMD486DX |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Closed |
|
80486DX |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Closed |
|
80486DX2 |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Closed |
|
CPU SPEED CONFIGURATION |
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|
Speed |
JP20 |
JP21 |
JP22 |
|
25MHz |
Closed |
Open |
Open |
|
33MHz |
Open |
Open |
Closed |
|
40MHz |
Open |
Closed |
Closed |
|
50iMHz |
Closed |
Open |
Open |
|
50MHz |
Open |
Closed |
Open |
|
66iMHz |
Open |
Open |
Closed |
|
VESA WAIT STATE CONFIGURATION (SCSL ONLY) |
|
|
Wait states |
JP9/11 |
|
0 wait states |
Pins 1 & 2 closed |
|
1 wait state |
Pins 2 & 3 closed |
|
BUS SPEED CONFIGURATION (SCSL ONLY) |
|
|
CPU speed |
JP8/10 |
|
<= 33MHz |
Pins 1 & 2 closed |
|
> 33MHz |
Pins 2 & 3 closed |