HOWTO: Enter memory resources correctly


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Article ID: Q700002

The information in this article applies to:

  • Direct I/O, version 4.0, 4.1, 4.2, 4.3, 4.4


A common mistake is to enter memory regions in paragraphs and not in real addresses.


Almost every hardware documentation uses a historic notation where addresses are expressed in multiples of 16 bytes called paragraphs. In Direct I/O you have to enter all memory regions in bytes.


Hardware Doc Direct I/O
D000-D3FF D0000-D3FFF

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Last modified: 2018-04-24.
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