1 | @c |
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2 | @c COPYRIGHT (c) 1988-1998. |
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3 | @c On-Line Applications Research Corporation (OAR). |
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4 | @c All rights reserved. |
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5 | @c |
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6 | @c $Id$ |
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7 | @c |
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8 | |
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9 | @ifinfo |
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10 | @node Preface, CPU Model Dependent Features, Top, Top |
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11 | @end ifinfo |
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12 | @unnumbered Preface |
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13 | |
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14 | The Real Time Executive for Multiprocessor Systems (RTEMS) |
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15 | is designed to be portable across multiple processor |
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16 | architectures. However, the nature of real-time systems makes |
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17 | it essential that the application designer understand certain |
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18 | processor dependent implementation details. These processor |
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19 | dependencies include calling convention, board support package |
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20 | issues, interrupt processing, exact RTEMS memory requirements, |
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21 | performance data, header files, and the assembly language |
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22 | interface to the executive. |
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23 | |
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24 | This document discusses the Motorola MC68xxx |
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25 | architecture dependencies in this port of RTEMS. The MC68xxx |
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26 | family has a wide variety of CPU models within it. The part |
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27 | numbers for these models are generally divided into MC680xx and |
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28 | MC683xx. The MC680xx models are more general purpose processors |
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29 | with no integrated peripherals. The MC683xx models, on the |
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30 | other hand, are more specialized and have a variety of |
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31 | peripherals on chip including sophisticated timers and serial |
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32 | communications controllers. |
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33 | |
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34 | It is highly recommended that the Motorola MC68xxx |
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35 | RTEMS application developer obtain and become familiar with the |
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36 | documentation for the processor being used as well as the |
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37 | documentation for the family as a whole. |
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38 | |
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39 | @subheading Architecture Documents |
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40 | |
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41 | For information on the Motorola MC68xxx architecture, |
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42 | refer to the following documents available from Motorola |
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43 | (@file{http//www.moto.com/}): |
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44 | |
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45 | @itemize @bullet |
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46 | @item @cite{M68000 Family Reference, Motorola, FR68K/D}. |
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47 | @end itemize |
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48 | |
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49 | @subheading MODEL SPECIFIC DOCUMENTS |
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50 | |
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51 | For information on specific processor models and |
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52 | their associated coprocessors, refer to the following documents: |
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53 | |
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54 | @itemize @bullet |
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55 | @item @cite{MC68020 User's Manual, Motorola, MC68020UM/AD}. |
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56 | |
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57 | @item @cite{MC68881/MC68882 Floating-Point Coprocessor User's |
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58 | Manual, Motorola, MC68881UM/AD}. |
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59 | @end itemize |
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60 | |
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