95 Chapter 5
C_INTRUSION: Chassis detect header
This detects if the chassis cover has been removed. This function needs a chassis equipped with intrusion
detection switch and needs to be enabled in BIOS.
INT_SPK: Internal speaker
OBR: Button recovery jumper
PRINTER: Oboard parallel port header
Pin1-2 Signal Name
Short Chassis cover is removed
Open Chassis cover is closed
Pin Signal Name Pin Signal Name
1 Output_L 2 GND
3 Output_R 4 Key
5GND 6GND
7N/A 8VCC
Pin Signal Name
1OBR
2GND
Pin Signal Name Pin Signal Name
1 STROBE 2 PD0
3PD1 4PD2
5PD3 6PD4
7PD5 8PD6
9PD7 10ACK
11 BUSY 12 PE
13 SLCT 14 ALF
15 ERROR 16 INTT
17 SLCTIN 18 Ground
19 Ground 20 Ground
21 Ground 22 Ground
23 Ground 24 Ground
25 Ground 26 NC
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