Dell Precision 410 User Manual

Also see for Vostro 410: Setup guide User guide Service manual Setup and quick reference guide Documentation update

Contents

B-12 Dell Precision 410 Mini Tower Systems User’s Guide.H\ERDUGDQG0RXVH&RQQHFWRUVYour system uses a Personal System/2 (PS/2)-style keyboard and supports a PS/2-compatible mouse. Cables from both devices attach to 6-pin miniatureDeutsche Indus-trie Norm (DIN) connectors on the back panel of your computer.A PS/2-compatible mouse works identically to an industry-standard serial mouse orbus mouse except that it has its own dedicated connector, which frees up both serialports and does not require an expansion card. Circuitry inside the mouse detects themovement of a small ball and relays the direction to the computer.Mouse driver software can give the mouse priority with the microprocessor by issu-ing IRQ12 whenever a new mouse movement is made. The driver software alsopasses along the mouse data to the application program that is in control..H\ERDUG &RQQHFWRUIf you reconfigure your hardware, you may need pin number and signal information forthe keyboard connector. Figure B-6 illustrates the pin numbers for the keyboard con-nector, and Table B-6 lists and defines the pin assignments and interface signals forthe keyboard connector.55 ATN I/O SCSI attention56 GND N/A Signal ground57 BSY I/O SCSI busy58 ACK I/O SCSI acknowledge59 RST I/O SCSI reset60 MSG I/O SCSI message61 SEL I/O SCSI select62 C/D I/O SCSI command/data63 REQ I/O SCSI request64 I/O I/O SCSI in/out65 D8 I/O SCSI data bit 866 D9 I/O SCSI data bit 967 D10 I/O SCSI data bit 1068 D11 I/O SCSI data bit 117DEOH % 3LQ $VVLJQPHQWV IRU WKH ([WHUQDO6&6, &RQQHFWRU FRQWLQXHG3LQ 6LJQDO ,2 'HILQLWLRQ23205BK0.BK : 23205AB0.FM Page 12 Wednesday, March 18, 1998 1:51 PM