SIEMENS NIXDORF INFORMATIONSSYSTEME AG
SYSTEM BOARD PCD-4LSX, SYSTEM BOARD PCD-H
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
Unidentified |
|
Maximum Onboard Memory |
32MB |
|
Maximum Video Memory |
2MB |
|
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), VGA feature connector, VGA port, riser slot |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
VGA port |
CN1 |
Floppy drive interface |
CN7 |
|
Parallel port |
CN2 |
Speaker |
J13 |
|
Serial port 2 |
CN3 |
External battery |
J14 |
|
Serial port 1 |
CN4 |
VGA feature connector |
J23 |
|
PS/2 mouse port |
CN5 |
Front panel connector |
JP30 |
|
IDE interface |
CN6 |
Riser slot |
SL1 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Onboard battery enabled |
JP8 |
Pins 1 & 2 closed |
|
Onboard battery disabled |
JP8 |
Pins 2 & 3 closed | |
|
|
Monitor type select color |
JP10 |
Closed |
|
Monitor type select monochrome |
JP10 |
Open | |
|
|
Mouse IRQ12 enabled |
JP11 |
Closed |
|
Mouse IRQ12 disabled |
JP11 |
Open | |
|
|
On board video enabled |
JP25 |
Closed |
|
On board video disabled |
JP25 |
Open | |
|
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 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||||
|
Size |
Bank 0 |
Bank 1 |
TAG (U48) |
TAG (U49) |
TAG (U50) |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(4) 8K x 8 |
None |
(1) 16K x 8 |
|
128KB |
(4) 32K x 8 |
None |
(4) 8K x 8 |
None |
(1) 16K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 16K x 8 |
|
Note: The location of banks 0 & 1 and the TAG 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 |
|
1MB |
1MB |
None |
|
2MB |
1MB |
1MB |
|
Note: The size of the video memory chips 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 (PQFP) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Closed |
|
80486SX (PGA) |
Open |
Pins 1 & 2 closed |
Open |
|
80486DX (PGA) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Closed |
|
80486DX2 (PGA) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Closed |