System Resources; System Memory Map; Direct Memory Access Channels - ADLINK Technology COM Express cExpress-BL User Manual

6. System Resources

6.1.

System Memory Map

Address Range (decimal)
(4GB-2MB)
(4GB-18MB) – (4GB-17MB-1)
(4GB-20MB) – (4GB-19MB-1)
15MB – 16MB
1MB -15MB
0K –1MB
6.2.

Direct Memory Access Channels

Channel Number
0
1
2
3
4
5
6
7
Address Range (hex)
FFE00000 – FFFFFFFF
FEE00000 – FEEFFFFF
FEC00000 – FECFFFFF
F00000 – FFFFFF
100000 - EFFFFF
00000 – FFFFFF
Data Width
8-bits
8-bits
8-bits
8-bits
16-bits
16-bits
16-bits
Size Description
2 MB High BIOS Area
1 MB MSI Interrupts
1 MB APIC Configuration Space
1 MB ISA Hole
14MB Main Memory
1MB DOS Compatibility Memory
System Resource
Generic
Generic
Generic
Generic
Reserved - cascade channel
Generic
Generic
Generic
cExpress-BL
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