82
System Resources
The following sections list the available system resources. See the vendor documentation
delivered with an expansion card or a peripheral device for instructions on how to use these
resources.
ISA Bus Interrupt (IRQ) Assignments
IRQ
System Resource
IRQ
System Resource
0
Reserved (interval timer)
8
Real time clock
1
Reserved (keyboard)
9
Open / PIRQ mapping
2
Reserved (interrupt controller)
10
Open
3
Serial port COM2 (default)
11
Open
4
Serial port COM1 (default)
12
PS/2 mouse port
5
USB
13
Reserved (math coprocessor)
6
Floppy disk controller
14
Primary IDE controller or open
7
Parallel port LPT1 (default)
15
Secondary IDE controller or open
Direct Memory Access (DMA) Channels
Channel
Assignment
Channel
Assignment
0
Open
4
DMA controller
1
Open
5
Open
2
Floppy disk controller
6
Open
3
Open
7
Open
Input/Output (I/O) Addresses
Address (hex)
Description
0000-000F
Direct memory access controller
0020-0021
Programmable Interrupt controller
0040-0043
System timer
0060-0060
Standard 101/102-key or Microsoft Natural keyboard
0061-0061
System Speaker
0064-0064
Standard 101/102-key or Microsoft Natural keyboard
0070-0071
System CMOS/real time clock
0080-0090
Direct memory access controller
Содержание ExtremeZ GL1
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