Dell WorkStation 210 manual ERDUGDQG0RXVH&RQQHFWRUV

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10	ACK#	I	Acknowledge
11	BUSY	I	Busy
12	PE	I	Paper end
13	SLCT	I	Select
14	AFD#	O	Automatic feed
15	ERR#	I	Error
16	INIT#	O	Initialize printer
17	SLIN#	O	Select in
18–25	GND	N/A	Signal ground

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Your 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 miniature Deutsche Industrie Norm (DIN) connectors on the back panel of your computer.

APS/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 microprocessor by issu- ing IRQ12 whenever a new mouse movement is made. The driver software also passes.H\ERDUGalong&RQQHFWRUthe 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-5 illustrates the pin numbers for the keyboard con- nector, and Table B-5 lists and defines the pin assignments and interface signals for

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6

4

2

5

3

1

B-10 Dell Precision 210 Desktop Systems User’s Guide