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Diffstat (limited to 'doc/supplements/arm/memmodel.t')
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diff --git a/doc/supplements/arm/memmodel.t b/doc/supplements/arm/memmodel.t deleted file mode 100644 index bf543364c7..0000000000 --- a/doc/supplements/arm/memmodel.t +++ /dev/null @@ -1,38 +0,0 @@ -@c -@c COPYRIGHT (c) 1988-2002. -@c On-Line Applications Research Corporation (OAR). -@c All rights reserved. -@c -@c $Id$ -@c - -@chapter Memory Model - -@section Introduction - -A processor may support any combination of memory -models ranging from pure physical addressing to complex demand -paged virtual memory systems. RTEMS supports a flat memory -model which ranges contiguously over the processor's allowable -address space. RTEMS does not support segmentation or virtual -memory of any kind. The appropriate memory model for RTEMS -provided by the targeted processor and related characteristics -of that model are described in this chapter. - -@section Flat Memory Model - -Members of the ARM family newer than Version 3 support a flat -32-bit address space with addresses ranging from 0x00000000 to -0xFFFFFFFF (4 gigabytes). Each address is represented by a -32-bit value and is byte addressable. -The address may be used to reference a -single byte, word (2-bytes), or long word (4 bytes). Memory -accesses within this address space are performed in the endian -mode that the processor is configured for. In general, ARM -processors are used in little endian mode. - -Some of the ARM family members such as the -920 and 720 include an MMU and thus support virtual memory and -segmentation. RTEMS does not support virtual memory or -segmentation on any of the ARM family members. - |