SOYO COMPUTER CO., LTD.
SY-021
|
Processor |
80386DX/80486SX/80486DX |
|
Processor Speed |
25/33/40/50MHz |
|
Chip Set |
Intel |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB (on CPU/Cache card) |
|
BIOS |
Intel |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external CPU/Cache card slot, bus mouse, floppy drive interface, parallel port, serial port |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
32-bit external CPU/Cache card |
CN1 |
Speaker |
J18 |
|
Bus mouse |
J2 |
Reset switch |
J19 |
|
Serial port |
J3 |
External battery |
J20 |
|
Parallel port |
J5 |
Turbo switch |
J21 |
|
Floppy drive interface |
J7 |
Turbo LED |
J22 |
|
Power LED & keylock |
J17 | ||
|
Note:The Turbo switch and Turbo LED may not be present on all board revisions. | |||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Floppy drive interface select 1.44MB |
J6 |
Open | |
|
Floppy drive interface select 1.2MB |
J6 |
pins 1 & 2 closed | |
|
Wait states select zero |
J8 |
Open | |
|
Wait states select one |
J8 |
Closed | |
|
Posted write control enabled |
J9 |
Open | |
|
Posted write control disabled |
J9 |
Closed | |
|
Monitor type select monochrome |
JP3 |
Open | |
|
Monitor type select color |
JP3 |
Closed | |
|
CMOS memory normal operation |
JP5 |
pins 1 & 2 closed | |
|
CMOS memory clear |
JP5 |
pins 2 & 3 closed | |
|
Note:Jumper JP3 and JP5 may not be present on all board revisions. | |||
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 256K x 36 |
NONE |
|
8MB |
(4) 256K x 36 |
(4) 256K x 36 |
|
8MB |
(4) 512K x 36 |
NONE |
|
12MB |
(4) 512K x 36 |
(4) 256K x 36 |
|
16MB |
(4) 512K x 36 |
(4) 512K x 36 |
|
16MB |
(4) 1M x 36 |
NONE |
|
20MB |
(4) 1M x 36 |
(4) 256K x 36 |
|
24MB |
(4) 1M x 36 |
(4) 512K x 36 |
|
32MB |
(4) 1M x 36 |
(4) 1M x 36 |
|
32MB |
(4) 2M x 36 |
NONE |
|
36MB |
(4) 2M x 36 |
(4) 256K x 36 |
|
40MB |
(4) 2M x 36 |
(4) 512K x 36 |
|
48MB |
(4) 2M x 36 |
(4) 1M x 36 |
|
64MB |
(4) 2M x 36 |
(4) 2M x 36 |
|
64MB |
(4) 4M x 36 |
NONE |
|
68MB |
(4) 4M x 36 |
(4) 256K x 36 |
|
72MB |
(4) 4M x 36 |
(4) 512K x 36 |
|
80MB |
(4) 4M x 36 |
(4) 1M x 36 |
|
96MB |
(4) 4M x 36 |
(4) 2M x 36 |
|
128MB |
(4) 4M x 36 |
(4) 4M x 36 |