Keyboard and mouse connectors, Table b, Keyboard connector – Dell PowerEdge 500SC User Manual
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Keyboard and Mouse Connectors
The 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 system.
Mouse driver software can give the mouse priority with the microprocessor by issuing IRQ12 whenever a new mouse movement is detected. The driver
software also passes along the mouse data to the application program that is in control.
Keyboard Connector
illustrates the pin numbers for the
defines the pin assignments and interface signals for the keyboard connector.
Figure B-4. Pin Numbers for the Keyboard Connector
Table B-2. Parallel Connector Pin
Assignments
Pin
Signal I/O Definition
1
STB# I/O Strobe
2
PD0
I/O Printer data bit 0
3
PD1
I/O Printer data bit 1
4
PD2
I/O Printer data bit 2
5
PD3
I/O Printer data bit 3
6
PD4
I/O Printer data bit 4
7
PD5
I/O Printer data bit 5
8
PD6
I/O Printer data bit 6
9
PD7
I/O Printer data bit 7
10
ACK# I
Acknowledge
11
BUSY
I
Busy
12
P E
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
Table B-3. Keyboard Connector Pin
Assignments
Pin
Signal
I/O Definition
1
KBDATA I/O Keyboard data