Interrupt channel assignments, Memory map, Interrupt channel assignments memory map – Ampro Corporation Single Board Computer 700 User Manual
Page 27: Table 3-1. interrupt channel assignments
Chapter 3
Hardware
ReadyBoard 700
Reference Manual
21
Interrupt Channel Assignments
The channel interrupt assignments are listed in Table 3-1.
Table 3-1. Interrupt Channel Assignments
Device vs IRQ No.
0
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
Timer
X
Keyboard
X
Secondary
Cascade
X
COM1
O
D
COM2
D
O
COM3
O
O
O
D
COM4
O
O
D
O
Floppy
X
Parallel
O
D
RTC
X
IDE Primary
X
O
IDE Secondary
O
X
Math Coprocessor
X
PS/2 Mouse
X
PCI INTA
Automatically Assigned
PCI INTB
Automatically Assigned
PCI INTC
Automatically Assigned
PCI INTD
Automatically Assigned
Sound Blaster
D
O
O
O
USB
Automatically Assigned
VGA
Automatically Assigned
Ethernet
Automatically Assigned
Legend: D = Default, O = Optional, X = Fixed
NOTE
The IRQs for the Ethernet, Video, and Internal Local Bus (ISA) are
automatically assigned by the BIOS Plug and Play logic. Local IRQs
assigned during initialization can not be used by external devices.
Memory Map
The following table provides the common PC/AT memory allocations. Memory below 000500h is used
by the BIOS. Refer to Table 3-2.