SAMSUNG ELECTRONICS, INC.
SD 550
Processor |
80286 (exact location unidentified) |
Processor Speed |
12MHz |
Chip Set |
Unidentified |
Maximum Onboard Memory |
1MB |
Cache |
None |
BIOS |
Award |
Dimensions |
406mm x 406mm |
I/O Options |
Floppy drive interface, parallel port, serial ports (2) |
NPU Options |
80287 (exact location unidentified) |
CONNECTIONS | |||
Function |
Label |
Function |
Label |
Serial port |
CN11 |
Power LED & keylock |
J13 |
Serial port |
CN12 |
Speaker |
J14 |
Parallel port |
CN13 |
External battery |
J15 |
Keyboard connector |
J11 |
Floppy drive interface |
J17 |
USER CONFIGURABLE SETTINGS | |||
Setting |
Label |
Position | |
» |
Jumper information unavailable |
J12 |
N/A |
Parallel port enabled |
JP11 |
Closed | |
Parallel port disabled |
JP11 |
Open | |
Floppy drive interface enabled |
JP12 |
Closed | |
Floppy drive interface disabled |
JP12 |
Open | |
Serial port 1 enabled |
JP13 |
Closed | |
Serial port 1 disabled |
JP13 |
Open | |
Serial port 2 enabled |
JP14 |
Closed | |
Serial port 2 disabled |
JP14 |
Open | |
BIOS type select 27256 |
JP15 |
Closed | |
BIOS type select 27128 |
JP15 |
Open | |
NPU speed select 16MHz |
JP17 |
Pins 1 & 2 closed | |
NPU speed select 25MHz |
JP17 |
Pins 2 & 3 closed | |
Drive type select dual speed |
JP19 |
Closed | |
Drive type select single speed |
JP19 |
Open | |
Precomp value select 187ns |
JP20 |
Closed | |
Precomp value select 125ns |
JP20 |
Open | |
Floppy drive address select secondary |
JP22 |
Closed | |
Floppy drive address select primary |
JP22 |
Open | |
Monitor type select color |
SW10 |
Up | |
Monitor type select monochrome |
SW10 |
Down |
DRAM | ||||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
640KB |
(9) 41256 |
(9) 41256 |
(9) 4164 |
(9) 4164 |
1MB |
(9) 41256 |
(9) 41256 |
(9) 41256 |
(9) 41256 |
Note: The orientation of the banks is unidentified. |
DRAM JUMPER | |
Size |
JP16 |
640KB |
Closed |
1MB |
Open |
DRAM WAIT STATE | |
Setting |
JP21 |
0 wait states |
Closed |
1 wait state |
Open |