SOYO COMPUTER CO., LTD.
SY-25 Q/R
|
Processor |
UMCU5S/AM486SX/80486SX/CX486DX/AM486DX/AM486DXL/ 80486DX/SL80486DX/CX486DX2/AM486DX2/80486DX2/ SL80486DX2/AM486DX4/SL80486DX4/P24D/P24T |
|
Processor Speed |
25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/ 100(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
64MB |
|
Maximum Video Memory |
None |
|
Cache |
256KB |
|
BIOS |
Award |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3), green PC connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J17 |
Turbo switch |
J21 |
|
Speaker |
J18 |
Turbo LED |
J22 |
|
Reset switch |
J19 |
Green PC connector |
JP25 |
|
External battery |
J20 |
32-bit VESA local bus slots |
SL1 SL3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
CMOS memory normal operation |
J20 |
Pins 2 & 3 closed |
|
CMOS memory clear |
J20 |
Pins 3 & 4 closed | |
|
Battery type select external |
J20 |
Closed | |
|
SIMM CONFIGURATION | |||
|
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 |
|
36MB |
(4) 1M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(4) 16M x 9 |
None |
None |
|
1MB |
None |
(1) 256K x 36 |
None |
|
2MB |
None |
(1) 256K x 36 |
(1) 256K x 36 |
|
2MB |
None |
(1) 512K x 36 |
None |
|
4MB |
None |
(1) 512K x 36 |
(1) 512K x 36 |
|
4MB |
None |
(1) 1M x 36 |
None |
|
5MB |
None |
(1) 256K x 36 |
(1) 1M x 36 |
|
6MB |
(4) 1M x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
6MB |
None |
(1) 512K x 36 |
(1) 1M x 36 |
|
8MB |
None |
(1) 1M x 36 |
(1) 1M x 36 |
|
8MB |
None |
(1) 2M x 36 |
None |
|
12MB |
(4) 1M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
12MB |
None |
(1) 1M x 36 |
(1) 2M x 36 |
|
16MB |
None |
(1) 2M x 36 |
(1) 2M x 36 |
|
SIMM CONFIGURATION (CONT) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
16MB |
None |
(1) 4M x 36 |
None |
|
17MB |
None |
(1) 256K x 36 |
(1) 4M x 36 |
|
18MB |
(4) 4M x 9 |
(1) 256K x 36 |
(1) 256K x 36 |
|
18MB |
None |
(1) 512K x 36 |
(1) 4M x 36 |
|
20MB |
None |
(1) 1M x 36 |
(1) 4M x 36 |
|
24MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 1M x 36 |
|
32MB |
None |
(1) 4M x 36 |
(1) 4M x 36 |
|
32MB |
None |
(1) 8M x 36 |
None |
|
36MB |
(4) 4M x 9 |
(1) 1M x 36 |
(1) 4M x 36 |
|
36MB |
None |
(1) 1M x 36 |
(1) 8M x 36 |
|
48MB |
(4) 4M x 9 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
None |
(1) 4M x 36 |
(1) 8M x 36 |
|
64MB |
None |
(1) 8M x 36 |
(1) 8M x 36 |
|
Note: Board also accepts x 32 SIMMs. Do not use any other combination of SIMM configuration. | |||
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
256KB (A) |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 16K/32K x 8 |
|
256KB (B) |
(4) 64K x 8 |
None |
(1) 16K/32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
JP9 |
JP10 |
|
256KB (A) |
Pins 2 & 3 closed |
Pins 2 & 3 closed |
|
256KB (B) |
Pins 1 & 2, 3 & 4 closed |
Pins 1 & 2 closed |
|
CPU SPEED SELECTION | |||
|
Speed |
JP4 |
JP5 |
JP6 |
|
25MHz |
Open |
Open |
Closed |
|
33MHz |
Closed |
Closed |
Closed |
|
40MHz |
Open |
Closed |
Closed |
|
50iMHz |
Open |
Open |
Closed |
|
66iMHz |
Closed |
Closed |
Closed |
|
75iMHz |
Open |
Open |
Closed |
|
80iMHz |
Open |
Closed |
Closed |
|
100iMHz |
Closed |
Closed |
Closed |
|
CPU TYPE SELECTION | |||||
|
Type |
JP11 |
JP12 |
JP13 |
JP14 |
JP15 |
|
UMC U5S |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
AM486SX |
Open |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
80486SX |
Open |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
CX486DX (5v) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
AM486DX |
Open |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
AM486DXL (5v) |
2 & 3 |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
80486DX |
Open |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
SL80486DX |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
CX486DX2 (5v) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
CX486DX2-66 (3.6v) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
CX486DX2-80 (4v) |
1 & 2, 3 & 4 |
1 & 2, 3 & 4, 5 & 6 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
AM486DX2 |
Open |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
AM486DX2-80 (3.45v) |
Open |
2 & 3 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
AM486DXL2 (5v) |
2 & 3 |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
80486DX2 |
Open |
2 & 3 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
SL80486DX2 |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
AM486DX4 (3.45v) |
Open |
2 & 3 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
SL80486DX4 (3.45v) |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4 |
1 & 2 |
1 & 2 |
|
SL80486DX4 (5v) |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
P24D |
1 & 2, 4 & 5 |
1 & 2, 4 & 5 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
P24T |
1 & 2 |
1 & 2 |
1 & 2, 3 & 4 |
2 & 3 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE SELECTION (CONT) | ||||
|
Type |
JP16 |
JP17 |
JP18 |
JP19 |
|
UMC U5S |
2 & 3 |
3 & 4 |
1 & 2 |
Open |
|
AM486SX |
2 & 3 |
Open |
Open |
Open |
|
80486SX |
2 & 3 |
Open |
Open |
Open |
|
CX486DX (5v) |
2 & 3 |
1 & 2 |
2 & 3, 4 & 5 |
2 & 3 |
|
AM486DX |
2 & 3 |
1 & 2 |
Open |
Open |
|
AM486DXL (5v) |
2 & 3 |
1 & 2, 3 & 4 |
1 & 2 |
Open |
|
80486DX |
2 & 3 |
1 & 2 |
Open |
Open |
|
SL80486DX |
2 & 3 |
1 & 2 |
5 & 6 |
1 & 2, 3 & 4 |
|
CX486DX2 (5v) |
2 & 3 |
1 & 2 |
2 & 3, 4 & 5 |
2 & 3 |
|
CX486DX2-66 (3.6v) |
1 & 2 |
1 & 2 |
2 & 3, 4 & 5 |
2 & 3 |
|
CX486DX2-80 (4v) |
1 & 2 |
1 & 2 |
2 & 3, 4 & 5 |
2 & 3 |
|
AM486DX2 |
2 & 3 |
1 & 2 |
Open |
Open |
|
AM486DX2-80 (3.45v) |
1 & 2 |
1 & 2 |
Open |
Open |
|
AM486DXL2 (5v) |
2 & 3 |
1 & 2, 3 & 4 |
1 & 2 |
Open |
|
80486DX2 |
2 & 3 |
1 & 2 |
Open |
Open |
|
SL80486DX2 |
2 & 3 |
1 & 2 |
5 & 6 |
1 & 2, 3 & 4 |
|
AM486DX4 (3.45v) |
1 & 2 |
1 & 2 |
Open |
Open |
|
SL80486DX4 (3.45v) |
1 & 2 |
1 & 2 |
5 & 6 |
1 & 2, 3 & 4 |
|
SL80486DX4 (5v) |
2 & 3 |
1 & 2 |
5 & 6 |
1 & 2, 3 & 4 |
|
P24D |
2 & 3 |
1 & 2 |
3 & 4, 5 & 6 |
1 & 2, 3 & 4 |
|
P24T |
2 & 3 |
2 & 3 |
5 & 6 |
1 & 2, 3 & 4 |
|
Note: Pins designated should be in the closed position. | ||||
|
CPU TYPE SELECTION | |||
|
Type |
JP20 |
JP26 |
JP27 |
|
UMC U5S |
Open |
Open |
Open |
|
AM486SX |
Open |
Open |
Open |
|
80486SX |
Open |
Open |
Open |
|
CX486DX (5v) |
Open |
Open |
Open |
|
AM486DX |
Open |
Open |
Open |
|
AM486DXL (5v) |
Open |
Open |
Open |
|
80486DX |
Open |
Open |
Open |
|
SL80486DX |
Open |
Open |
Open |
|
CX486DX2 (5v) |
Open |
Open |
Open |
|
CX486DX2-66 (3.6v) |
Open |
Open |
Pins 3 & 4closed |
|
CX486DX2-80 (4v) |
Open |
Open |
Pins 5 & 6closed |
|
AM486DX2 |
Open |
Open |
Open |
|
AM486DX2-80 (3.45v) |
Open |
Closed |
Pins 1 & 2 closed |
|
AM486DXL2 (5v) |
Open |
Open |
Open |
|
80486DX2 |
Open |
Open |
Open |
|
SL80486DX2 |
Open |
Open |
Open |
|
AM486DX4 (3.45v) |
Open |
Open |
Pins 1 & 2 closed |
|
SL80486DX4 (3.45v) |
Open |
Open |
Pins 1 & 2 closed |
|
SL80486DX4 (5v) |
Open |
Open |
Open |
|
P24D |
Open |
Open |
Open |
|
P24T |
Open |
Open |
Open |
|
Note: Pins designated should be in the closed position. | |||