I/O Map - ADLINK Technology COM Express Express-BL User Manual

6.3.

I/O Map

Hex Range
000-01F
020-02D and 030-03F
02E-02F
040-043
04e-04f
050-053
060, 064,
061
070-077
080-090
092
091，93-9F
0A0-0B1 and 0B4-0BD
0B2 and 0B3
0C0-0DF
0E0-0EF
0F0
0F1-0FF
100-169
170-177
178-1EF
1F0-1F7
1F8-2DF
2E0 -2F7
2F8-2FF
300-36F
376
378-37F
380-3AF
3B0-3BB and 3BF
3BC-3BE
3C0-3DF
3E0-3EF
3F0-3F5
3F6
3F7
3F8-3FF
Page 46
Device
DMA Controller
Interrupt controller 1, 8259 equivalent
LPC SIO () configuration index/data registers
Timer, 8254-2 equivalent
LPC SIO () configuration index/data registers
Timer, 8254-2 equivalent
8742 equivalent (keyboard)
NMI control and status
Real Time Clock Controller( bit 7 -NMI mask)
DMA Controller and LPC,PCI, or PCIe
Reset (Bit 0)/ Fast Gate A20 (Bit 1)
DMA Controller
Interrupt controller 2, 8259 equivalent
APM control and status port respectively
DMA Controller
N/A
Co-processor error register
N/A
N/A
Sata Controller
N/A
Sata Controller
N/A
Serial Port 3/4
Serial Port 2
Available
Sata Controller
Available
Available
Mono/VGA mode video
Reserved for parallel port
VGA registers
Available
Available
Sata Controller
Available
Serial port 1