I/O Address Map; Table 3-3. I/O Address Map; Reference Manual Coremodule 720 - ADLINK Technology CoreModule 720 Reference Manual

Chapter 3

I/O Address Map

Table 3-3 shows the I/O address map. These are DOS-level addresses. The OS typically hides these physical
addresses by way of memory management.
Table 3-3. I/O Address Map
Address (hex)
0000-00F
0020-0021
0040-0043
0060-006F
0070-007F
0080-009F
00A0-00BF
00C0-00DF
00F0-00FF
02E8-02EF
02F8-02FF
03B0-03BB
03C0-03DF
03E8-03EF
03F8-03FF
0400-041F
0500-053F
0800-087F
0A79h
0CF8-0CFF
NOTE 0A79h is the ISA PnP port used by the BIOS and an OS that supports this feature to
recognize ISA PnP (Plug and Play) cards.
The Intel I/O hub PCH EG20T does not support ISA DMA.
22
Subsystem
Primary DMA Controller0
Master Interrupt Controller
Programmable Interrupt Timer (Clock/Timer)
Keyboard Controller
CMOS RAM, NMI Mask Reg, RT Clock
DMA Page Registers
Slave Interrupt Controller
Slave DMA Controller #2
Math Coprocessor
Serial Port 4 (COM3)
Serial Port 2 (COM1)
Video (monochrome)
VGA
Serial Port 3 (COM2)
Serial Port 1 (COM0)
SMBus Configuration Ports
PCH GPIO Configuration Ports
PCH Power Management Ports
ISA PnP Ports
PCI bus Configuration Address and Data
Reference Manual
Hardware
CoreModule 720