SIEMENS NIXDORF INFORMATIONSSYSTEME AG
S26361-D756-X
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
Unidentified |
|
Maximum Onboard Memory |
32MB |
|
Maximum Video Memory |
1MB |
|
Cache |
64/128/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), video feature connector, VGA port, riser slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Front panel connector |
CN1 |
Serial port 2 |
J20 |
|
Speaker |
J13 |
Parallel port |
J21 |
|
PS/2 mouse port |
J15 |
Video feature connector |
J23 |
|
IDE interface |
J17 |
VGA port |
J24 |
|
Floppy drive interface |
J18 |
External battery |
JP8 |
|
Serial port 1 |
J19 |
Riser slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Internal battery enabled |
JP8 |
Pins 1 & 2 closed |
|
Internal battery disabled (CMOS memory clear) |
JP8 |
Pins 2 & 3 closed | |
|
|
Monitor type select color |
JP10 |
Open |
|
Monitor type select monochrome |
JP10 |
Closed | |
|
|
PS/2 mouse IRQ12 enabled |
JP11 |
Closed |
|
PS/2 mouse IRQ12 disabled |
JP11 |
Open | |
|
|
On board video enabled |
JP25 |
Pins 1 & 2 closed |
|
On board video disabled |
JP25 |
Pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
4MB |
(4) 1M x 9 |
None |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
None |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
None |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
Note: The locations of banks 0 & 1 are unidentified. | ||
|
CACHE TAG CONFIGURATION | |||
|
Size |
U48 |
U49 |
U50 |
|
64KB |
(1) 8K x 8 |
None |
(1) 16K x 8 |
|
128KB |
(1) 8K x 8 |
None |
(1) 16K x 8 |
|
256KB |
(1) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 8 |
|
Note: The locations of U48, U49 & U50 are unidentified. | |||
|
CACHE JUMPER CONFIGURATION | ||||||
|
Size |
JP12 |
JP13 |
JP14 |
JP15 |
JP16 |
JP17 |
|
None |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
Open |
|
64KB |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
Open |
|
128KB |
1 & 2 |
1 & 2 |
Closed |
Open |
Open |
Closed |
|
256KB |
2 & 3 |
2 & 3 |
Closed |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | ||||||
|
VIDEO MEMORY CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
512KB |
None |
|
1MB |
512KB |
512KB |
|
Note: The chips sizes are unidentified. | ||
|
CPU SPEED SELECTION | ||
|
Speed |
JP5 |
JP6 |
|
25MHz |
Closed |
Open |
|
33MHz |
Open |
Closed |
|
50iMHz |
Closed |
Open |
|
66iMHz |
Open |
Closed |
|
CPU TYPE SELECTION | |||
|
Type |
JP1 |
JP2 |
JP3 |
|
80486SX |
Open |
Pins 1 & 2 closed |
Open |
|
80487SX |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
|
80486DX |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
80486DX2 |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
Note: If upgrade socket is filled, JP1 must be open. | |||
|
MISCELLANEOUS TECHNICAL NOTE |
|
Note: The location of pin 1 on the jumpers and connectors are unidentified. |