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2015
congatec
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9
System Resources
9.1
System Memory Map
Table 29 Memory Map
Address Range (decimal)
Address Range (hex)
Size
Description
(TOM-xxxx) – TOM
N.A.
N.A.
ACPI reclaim, PCI memory range, Video, ….
1024kB – (TOM-xxxx)
100000 – N.A
N.A.
Extended memory
869kB – 1024kB
E0000 - FFFFF
128kB
Runtime BIOS
768kB – 896kB
C0000 - DFFFF
Expansion Area
640kB – 768kB
A0000 - BFFFF
128kB
Video memory and BIOS
639kB – 640kB
9FC00 - 9FFFF
1kB
Extended BIOS data
0 – 639kB
00000 - 9FC00
512kB
Conventional memory
Note
T.O.M. = Top of memory = max. DRAM installed
9.2
I/O Address Assignment
The I/O address assignment of the conga-TCA module is functionally identical with a standard PC/AT. The BIOS assigns PCI and PCI Express
I/O resources from FFF0h downwards. Non PnP/PCI/PCI Express compliant devices must not consume I/O resources in that area.