UNIDENTIFIED
SIS 486-471 VL BUS 5/3.3V
|
Processor |
CX486S/80486SX/CX486DX/80486DX/80486DX2/80486DX4/Pentium Overdrive |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
128MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 220mm |
|
I/O Options |
32-bit VESA local bus slots (3), green PC connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J1 |
Reset switch |
J6 |
|
Green PC connector |
J2 |
Power LED & keylock |
J7 |
|
Turbo switch |
J3 |
Break switch connector |
JP26 |
|
Turbo LED |
J4 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
Speaker |
J5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Turbo switch enabled |
J3 |
pins 1 & 2 closed |
|
Turbo switch disabled |
J3 |
pins 2 & 3 closed | |
|
Use for break switch |
J3 |
pins 4 & 5 closed | |
|
|
CMOS memory normal operation |
JP16 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP16 |
pins 2 & 3 closed | |
|
|
Monitor type select VGA/EGA/monochrome |
JP17 |
Open |
|
Monitor type select CGA |
JP17 |
Closed | |
|
|
CX486S2 CPU not installed |
JP18 |
Open |
|
CX486S2 CPU installed |
JP18 |
Closed | |
|
|
RC pin for break switch |
JP19 |
pins 1 & 2 closed |
|
RC pin for RC |
JP19 |
pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
JP20 |
pins 2 & 3 closed |
|
|
Factory configured - do not alter |
JP23 |
pins 1 & 2 closed |
|
|
J3 set with pins open |
JP27 |
Closed |
|
J3 set with pins 4 & 5 closed |
JP27 |
Open | |
|
|
Factory configured - do not alter |
JP43 |
pins 1 & 2 closed |
|
DRAM CONFIGURATION (TABLE 1) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(1) 256K x 36 |
NONE |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
|
5MB |
(4) 256K x 9 |
(1) 1M x 36 |
NONE |
|
6MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 1M x 36 |
|
8MB |
(4) 1M x 9 |
(1) 1M x 36 |
NONE |
|
12MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
|
17MB |
(4) 256K x 9 |
(1) 4M x 36 |
NONE |
|
18MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 4M x 36 |
|
20MB |
(4) 1M x 9 |
(1) 4M x 36 |
NONE |
|
24MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
32MB |
(4) 4M x 9 |
(1) 4M x 36 |
NONE |
|
34MB |
(4) 256K x 9 |
(1) 256K x 36 |
(1) 8M x 36 |
|
36MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 8M x 36 |
NONE |
|
48MB |
(4) 4M x 9 |
(1) 8M x 36 |
NONE |
|
52MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 8M x 36 |
|
64MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 8M x 36 |
|
64MB |
(4) 16M x 9 |
NONE |
NONE |
|
68MB |
(4) 1M x 9 |
(1) 8M x 36 |
(1) 8M x 36 |
|
80MB |
(4) 4M x 9 |
(1) 8M x 36 |
(1) 8M x 36 |
|
96MB |
(4) 16M x 9 |
(1) 8M x 36 |
NONE |
|
128MB |
(4) 16M x 9 |
(1) 8M x 36 |
(1) 8M x 36 |
|
DRAM CONFIGURATION (TABLE 2) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
1MB |
(1) 256K x 36 |
NONE |
NONE |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
NONE |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
|
5MB |
(1) 256K x 36 |
(1) 1M x 36 |
NONE |
|
6MB |
(1) 256K x 36 |
(1) 256K x 36 |
(4) 1M x 9 |
|
8MB |
(1) 2M x 36 |
NONE |
NONE |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(4) 1M x 9 |
|
16MB |
(1) 2M x 36 |
(1) 2M x 36 |
NONE |
|
16MB |
(1) 4M x 36 |
NONE |
NONE |
|
17MB |
(1) 256K x 36 |
(1) 4M x 36 |
NONE |
|
18MB |
(1) 256K x 36 |
(1) 256K x 36 |
(4) 4M x 9 |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
|
24MB |
(1) 1M x 36 |
(1) 1M x 36 |
(4) 4M x 9 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
32MB |
(1) 8M x 36 |
NONE |
NONE |
|
36MB |
(1) 1M x 36 |
(1) 4M x 36 |
(4) 4M x 9 |
|
36MB |
(1) 1M x 36 |
(1) 8M x 36 |
NONE |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 4M x 9 |
|
48MB |
(1) 4M x 36 |
(1) 8M x 36 |
NONE |
|
64MB |
(1) 8M x 36 |
(1) 8M x 36 |
NONE |
|
72MB |
(1) 1M x 36 |
(1) 1M x 36 |
(4) 16M x 9 |
|
96MB |
(1) 4M x 36 |
(1) 4M x 36 |
(4) 16M x 9 |
|
128MB |
(1) 8M x 36 |
(1) 8M x 36 |
(4) 16M x 9 |
|
DRAM JUMPER CONFIGURATION | ||
|
Configuration |
JP36 |
JP37 |
|
Table 1 |
pins 1 & 2 closed |
pins 2 & 3 closed |
|
Table 2 |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 4K 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 |
|
512KB |
(4) 128K x 8 |
NONE |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||||
|
Size |
JP1 |
JP2 |
JP3 |
JP4 |
JP33 |
JP34 |
JP35 |
|
64KB |
2 & 3 |
1 & 2 |
2 & 3, 4 & 5 |
1 & 2 |
1 & 2 |
1 & 2 |
Open |
|
128KB |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4 |
1 & 2 |
2 & 3 |
2 & 3 |
Open |
|
256KB |
2 & 3 |
Open |
2 & 3, 4 & 5 |
Open |
2 & 3 |
2 & 3 |
Closed |
|
256KB |
2 & 3 |
2 & 3 |
2 & 3, 4 & 5 |
1 & 2 |
2 & 3 |
2 & 3 |
Open |
|
512KB |
1 & 2 |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
|
Note: Pins designated should be in the closed position. | |||||||
|
CPU TYPE CONFIGURATION | ||
|
Type |
JP30 |
JP31 |
|
P24D |
Closed |
Closed |
|
All other CPU |
Open |
Open |
|
CPU TYPE CONFIGURATION | |||||
|
Type |
JP8 |
JP9 |
JP10 |
JP11 |
JP12 |
|
CX486SX |
2 & 3 |
Closed |
2 & 3 |
Open |
2 & 3, 4 & 5 |
|
80486SX |
2 & 3 |
Open |
2 & 3 |
Open |
Open |
|
SLE486SX |
2 & 3 |
Open |
2 & 3 |
Open |
3 & 4 |
|
CX486DX |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
2 & 3 |
|
SLE486DX |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
3 & 4 |
|
80486DX |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
Open |
|
SLE486DX2 |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
3 & 4 |
|
80486DX4 |
1 & 2 |
Closed |
2 & 3 |
3 & 4 |
3 & 4 |
|
P24D |
1 & 2 |
Closed |
1 & 2 |
3 & 4 |
1 & 2, 3 & 4 |
|
P24T |
1 & 2 |
Closed |
1 & 2 |
2 & 3 |
3 & 4 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION (CONT) | |||||
|
Type |
JP13 |
JP14 |
JP15 |
JP21 |
JP22 |
|
CX486SX |
Open |
1 & 2, 3 & 4 |
2 & 3 |
1 & 2 |
2 & 3 |
|
80486SX |
Open |
Open |
Open |
2 & 3 |
1 & 2 |
|
SLE486SX |
1 & 2 |
2 & 3 |
4 & 5 |
2 & 3 |
1 & 2 |
|
CX486DX |
Open |
1 & 2, 3 & 4 |
2 & 3 |
1 & 2 |
2 & 3 |
|
SLE486DX |
1 & 2 |
2 & 3 |
4 & 5 |
2 & 3 |
1 & 2 |
|
80486DX |
Open |
Open |
Open |
2 & 3 |
1 & 2 |
|
SLE486DX2 |
1 & 2 |
2 & 3 |
4 & 5 |
2 & 3 |
1 & 2 |
|
80486DX4 |
1 & 2 |
2 & 3 |
4 & 5 |
2 & 3 |
1 & 2 |
|
P24D |
2 & 3 |
2 & 3 |
4 & 5 |
2 & 3 |
1 & 2 |
|
P24T |
Open |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION (CONT) | |||||
|
Type |
JP24 |
JP25 |
JP32 |
JP41 |
JP42 |
|
CX486SX |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
80486SX |
Open |
Open |
1 & 2 |
2 & 3, 5 & 6 |
Closed |
|
SLE486SX |
Open |
Open |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
CX486DX |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
SLE486DX |
Open |
Open |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
80486DX |
Open |
Open |
1 & 2 |
2 & 3, 5 & 6 |
Closed |
|
SLE486DX2 |
Open |
Open |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
80486DX4 |
Open |
Open |
2 & 3 |
1 & 2, 4 & 5 |
Open |
|
P24D |
Open |
1 & 2 |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
P24T |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3, 5 & 6 |
Closed |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU VOLTAGE CONFIGURATION | |
|
Voltage |
JP41 |
|
3.3v |
pins 1 & 2, 4 & 5 closed |
|
5.0v (DX4) |
pins 2 & 3, 5 & 6 closed |
|
Note: If Q4, Q5, and Q6 are installed or Q6 only installed, set JP41 with pins 1 & 2, 4 & 5 closed. | |
|
CPU SPEED CONFIGURATION (U16-AVASEM/AV9107-03/KTS0147C) | |||
|
Speed |
JP5 |
JP6 |
JP7 |
|
20MHz |
Closed |
Open |
Closed |
|
25MHz |
Closed |
Closed |
Open |
|
33MHz |
Open |
Closed |
Closed |
|
40MHz |
Closed |
Open |
Open |
|
50iMHz |
Closed |
Closed |
Open |
|
50MHz |
Open |
Open |
Closed |
|
66iMHz |
Open |
Closed |
Closed |
|
CPU SPEED CONFIGURATION (U17-MX8315) | |||
|
Speed |
JP5 |
JP6 |
JP7 |
|
20MHz |
Open |
Open |
Open |
|
25MHz |
Open |
Closed |
Open |
|
33MHz |
Closed |
Closed |
Closed |
|
40MHz |
Open |
Closed |
Closed |
|
50iMHz |
Open |
Closed |
Open |
|
50MHz |
Closed |
Open |
Open |
|
66iMHz |
Closed |
Closed |
Closed |
|
VESA WAIT STATE CONFIGURATION | |
|
Wait states |
JP28 |
|
0 wait states |
pins 1 & 2 closed |
|
1 wait state |
pins 2 & 3 closed |
|
BUS SPEED CONFIGURATION | |
|
CPU speed |
JP29 |
|
<= 33MHz |
pins 1 & 2 closed |
|
> 33MHz |
pins 2 & 3 closed |