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diff --git a/doc/supplements/m68k/memmodel.t b/doc/supplements/m68k/memmodel.t deleted file mode 100644 index 7b7776050c..0000000000 --- a/doc/supplements/m68k/memmodel.t +++ /dev/null @@ -1,39 +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 - -The MC68xxx family supports 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 big endian -fashion by the processors in this family. - -Some of the MC68xxx family members such as the -MC68020, MC68030, and MC68040 support virtual memory and -segmentation. The MC68020 requires external hardware support -such as the MC68851 Paged Memory Management Unit coprocessor -which is typically used to perform address translations for -these systems. RTEMS does not support virtual memory or -segmentation on any of the MC68xxx family members. - |