Interrupt Channel Assignments; Memory Map; Table 3-1. Interrupt Channel Assignments; Table 3-2. Memory Map - ADLINK Technology CoreModule 745 Reference Manual

Chapter 3

Interrupt Channel Assignments

The interrupt channel assignments are shown in

Table 3-1. Interrupt Channel Assignments

Device vs IRQ No.
Timer
PS/2 Keyboard
Secondary Cascade
COM1
COM2
COM3
RTC
IDE
Math Coprocessor
PS/2 Mouse
PCI INTA
PCI INTB
PCI INTC
PCI INTD
USB
Video
Legend: D = Default, O = Optional, X = Fixed
NOTE The IRQs for USB and Video 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. These are DOS-level addresses. The
OS typically hides these physical addresses by way of memory management.

Table 3-2. Memory Map

Base Address
00000000h - 0009FFFFh
000A0000h - 000AFFFFh
000B0000h - 000B7FFFh
000B8000h - 000BFFFFh
000C0000h - 000CFFFFh
000D0000h - 000DFFFFh
000E0000h - 000EFFFFh
000F0000h - 000FFFFFh
CoreModule 745
Table 3-1.
0 1 2 3 4 5
X
X
X
O D
D O
Automatically Assigned
Automatically Assigned
Automatically Assigned
Automatically Assigned
Automatically Assigned
Automatically Assigned
Function
Conventional Memory
Graphics Memory
Mono Text Memory
Color Text Memory
Standard Video BIOS
DVMT Memory
PCI Express Base Memory
System Flash and PCI Resources
Reference Manual
6 7 8 9 10 11
O D
X
Hardware
12 13 14 15
D
X
X
21