Dell Precision 610 Dell Precision WorkStation 610 Mini Tower Systems User's Gu - Page 160
Deutsche Indus, trie Norm
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55 ATN I/O 56 GND N/A 57 BSY I/O 58 ACK I/O 59 RST I/O 60 MSG I/O 61 SEL I/O 62 C/D I/O 63 REQ I/O 64 I/O I/O 65 D8 I/O 66 D9 I/O 67 D10 I/O 68 D11 I/O SCSI attention Signal ground SCSI busy SCSI acknowledge SCSI reset SCSI message SCSI select SCSI command/data SCSI request SCSI in/out SCSI data bit 8 SCSI data bit 9 SCSI data bit 10 SCSI data bit 11 Your system uses a Personal System/2 (PS/2)-style keyboard and supports a PS/2compatible mouse. Cables from both devices attach to 6-pin miniature Deutsche Industrie Norm (DIN) connectors on the back panel of your computer. A PS/2-compatible mouse works identically to an industry-standard serial mouse or bus mouse except that it has its own dedicated connector, which frees up both serial ports and does not require an expansion card. Circuitry inside the mouse detects the movement of a small ball and relays the direction to the computer. Mouse driver software can give the mouse priority with the processor by issuing IRQ12 whenever a new mouse movement is made. The driver software also passes along the mouse data to the application program that is in control. If you reconfigure your hardware, you may need pin number and signal information for the keyboard connector. Figure B-6 illustrates the pin numbers for the keyboard connector, and Table B-6 lists and defines the pin assignments and interface signals for the keyboard connector. B-12 Dell Precision 610 Mini Tower Systems User's Guide