Irq Line Assignments - Dell Inspiron 3800 System Reference Manual

Technical Overview: Dell Inspiron 3800 System Reference
800 x 600 (8 bit)
1024 x 768 (8 bit)
1280 x 1024 (8 bit)
1600 x 1200 (8 bit)
640 x 480 (16 bit)
800 x 600 (16 bit)
1024 x 768 (16 bit)
P
1280 x 1024 (16 bit)
r
i
1600 x 1200 (16 bit)
m
640 x 480 (24 bit)
a
r
800 x 600 (24 bit)
y
1024 x 768 (24 bit)
1280 x 1024 (24 bit)
1600 x 1200 (24 bit)
640 x 480 (32 bit)
800 x 600 (32 bit)
1024 x 768 (32 bit)
1280 x 1024 (32 bit)
1600 x 1200 (32 bit)

IRQ Line Assignments

Problems can arise if two devices attempt to use the same interrupt request (IRQ) line. To avoid this type of conflict, check the
documentation for the default IRQ line setting for each installed device. Then consult
available IRQ lines.
NOTE: Installed devices cannot share the same COM port address. The default address of your computer's serial
port is COM1.
To view IRQ line assignments in Windows 98, click the Start button, point to Settings, and click Control Panel. Double-click the System
icon. Select the Device Manager tab, and then double-click Computer.
To view IRQ line assignments in Windows 2000, click the Start button, point to Settings, and click Control Panel. Double-click the
System icon. Select the Hardware tab, and then click Device Manager. Click View, and then click Resources by connection. Double-
click Interrupt request (IRQ) to view the IRQ assignments.
Table 3. IRQ Line Assignments
IRQ Line Reserved/Available
IRQ0 Reserved; generated by the system timer
IRQ1 Reserved; generated by the keyboard controller to signal that the keyboard output buffer is full
IRQ2 Reserved; generated internally by the interrupt controller to enable IRQ8 through IRQ15
file:///F|/Service%20Manuals/Dell/Inspiron/3800/overview.htm (7 of 10) [2/28/2004 6:58:48 AM]
32 32
32 32
32 32
32 32
32 32
32 32
32 32
32 32
32 32
32 32
32 32
32 32
32 32
24 24
32 32
32 32
32 32
32 32
8 8
32
32
32
32
32
32
32
32
24
32
32
32
32
16
32
32
32
24
--
Table 3 to configure the device for one of the
32
32
32
32
32
32
32
32
24
32
32
32
24
8
32
32
24
16
--