SOYO COMPUTER CO., LTD.
SY-020C/D
|
Processor |
80486SX/80486DX |
|
Speed |
20/25/33/50MHz |
|
Chip Set |
ETEQ |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
325mm x 220mm |
|
I/O Options |
32-bit external memory card slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
J17 |
Turbo switch |
J21 |
|
Speaker |
J18 |
Turbo LED |
J22 |
|
Reset switch |
J19 |
32-Bit external memory card |
S1 |
|
External battery |
J20 | ||
|
USER CONFIGURABLE JUMPERS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
JP2 |
closed | |
|
Monitor type select monochrome |
JP3 |
pins 2 & 3 closed | |
|
Monitor type select color |
JP3 |
pins 1 & 2 closed | |
|
CMOS memory normal operation |
JP5 |
pins 1 & 2 closed | |
|
CMOS memory clear |
JP5 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
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 |
(4) 256K x 9 |
NONE |
|
4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
5MB |
(4) 1M x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
6MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
NONE |
|
7MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
9MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 256K x 9 |
NONE |
|
10MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
13MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 256K x 9 |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(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) 1M x 9 |
(4) 4M x 9 |
NONE |
|
28MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
36MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
37MB |
(4) 256K x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
49MB |
(4) 256K x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
52MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1. | ||||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 8K x 8 |
(2) 16K x 4 |
|
256KB |
(8) 32K x 8 |
(2) 16K x 4 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP15 |
JP16 |
JP17 |
JP18 |
JP33 |
|
64KB |
Open |
Open |
2 & 3 |
2 & 3 |
Open |
|
256KB |
Closed |
Closed |
1 & 2 |
1 & 2 |
Closed |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU TYPE CONFIGURATION | |||
|
Type |
JP103 |
JP104 |
JP106 |
|
80486DX |
pins 2 & 3 closed |
pins 2 & 3 closed |
Closed |
|
80486SX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Open |
|
CPU SPEED CONFIGURATION | ||||
|
CPU Speed |
Oscillator U18 |
Oscillator U22 |
JP13 |
JP23 |
|
20MHz |
40MHz |
N/A |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
25MHz |
N/A |
50MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
33MHz |
N/A |
66MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
50MHz |
N/A |
50MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |