SIEMENS-NIXDORF INFORMATIONSSYSTEME AG
SYSTEM BOARD D1025
Device Type | Mainboard |
Processor | CX M2/AM K6/Pentium |
Processor Speed | 166/200/233MHz |
Chip Set | Unidentified |
Video Chip Set | Matrox |
Maximum Onboard Memory | 256MB (EDO & SDRAM supported) |
Maximum Video Memory | 8MB (SGRAM supported) |
Cache | 512KB |
BIOS | Unidentified |
Dimensions | 330mm x 218mm |
I/O Options | Ethernet 10BaseT connector, floppy drive interface, game/MIDI port, IDE interfaces (2), parallel port, PS/2 mouse port, serial port, VGA feature connector, VGA port, riser slot, IR connector, USB connectors (2), line in, line out, microphone in |
NPU Options | None |

CONNECTIONS | |||
Purpose | Location | Purpose | Location |
Voice modem connector | C7 | Parallel port | CN3 |
Auxiliary in | C8 | Serial port 1 | CN4 |
Audio in – CD-ROM | C9 | PS/2 mouse port | CN5 |
Chip card reader | C10 | USB connector 1 | CN6 |
IR connector | C11 | USB connector 2 | CN7 |
Control panel 2 | C12 | Microphone in | CN8 |
Control panel 1 | C13 | Line in | CN9 |
Soft off power supply | C14 | Line out | CN10 |
Speaker | C15 | Game/MIDI port | CN11 |
Chassis fan power | C16 | IDE interface 2 | CN12 |
Fax board connector | C18 | Floppy drive interface | CN13 |
Wake on LAN connector | C19 | IDE interface 1 | CN14 |
SCSI interface LED | C20 | VGA feature connector | CN15 |
I2C connector | C21 | 5v power | P1 |
VGA port | CN1 | 3.3v power | P2 |
Ethernet 10BaseT connector | CN2 | Riser slot | SL1 |
USER CONFIGURABLE SETTINGS | |||
Function | Label | Position | |
» | Factory configured - do not alter | C1 | Unidentified |
» | Factory configured - do not alter | C2 | Unidentified |
» | Factory configured - do not alter | C3 | Unidentified |
» | Factory configured - do not alter | C4 | Unidentified |
» | Factory configured - do not alter | C6 | Unidentified |
» | Flash BIOS normal operation | SW1/5 | Off |
Flash BIOS recovery mode | SW1/5 | On | |
» | Factory configured - do not alter | SW1/6 | Off |
» | Factory configured - do not alter | SW1/7 | Unidentified |
» | Floppy drive write protect disabled | SW1/8 | Off |
Floppy drive write protect enabled | SW1/8 | On | |
DIMM CONFIGURATION | ||
Size | Bank 0 | Bank 1 |
8MB | (1) 1M x 64 | None |
16MB | (1) 2M x 64 | None |
16MB | (1) 1M x 64 | (1) 1M x 64 |
24MB | (1) 2M x 64 | (1) 1M x 64 |
32MB | (1) 4M x 64 | None |
32MB | (1) 2M x 64 | (1) 2M x 64 |
40MB | (1) 4M x 64 | (1) 1M x 64 |
48MB | (1) 4M x 64 | (1) 2M x 64 |
64MB | (1) 8M x 64 | None |
64MB | (1) 4M x 64 | (1) 4M x 64 |
72MB | (1) 8M x 64 | (1) 1M x 64 |
80MB | (1) 8M x 64 | (1) 2M x 64 |
96MB | (1) 8M x 64 | (1) 4M x 64 |
128MB | (1) 16M x 64 | None |
128MB | (1) 8M x 64 | (1) 8M x 64 |
136MB | (1) 16M x 64 | (1) 1M x 64 |
144MB | (1) 16M x 64 | (1) 2M x 64 |
160MB | (1) 16M x 64 | (1) 4M x 64 |
192MB | (1) 16M x 64 | (1) 8M x 64 |
256MB | (1) 16M x 64 | (1) 16M x 64 |
Note: Board accepts EDO & SDRAM memory. | ||
CACHE CONFIGURATION |
Note: The location of the 512KB cache is unidentified. |
VIDEO MEMORY CONFIGURATION | ||
Size | Bank 0 | C5 |
2MB | 2MB | None |
4MB | 2MB | 2MB module installed |
8MB | 2MB | 6MB module installed |
CPU SPEED SELECTION | ||||||
CPU speed | Clock speed | Multiplier | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
166MHz | 66MHz | 2.5x | On | Off | On | On |
200MHz | 66MHz | 3x | On | Off | Off | On |
233MHz | 66MHz | 3.5x | On | Off | Off | Off |
CPU TYPE SELECTION | |
Type | C17 |
Intel | Open |
AM K6-166 | Pins 1 & 2 closed |
AM K6-200 | Pins 1 & 2 closed |
AM K6-233 | Pins 2 & 3 closed |