RTEMS 4.9.2 On-Line Library

RTEMS CPU Architecture Supplement

Chapter 5: M68xxx and Coldfire Specific Information

This chapter discusses the Freescale (formerly Motorola) MC68xxx and Coldfire architectural dependencies. The MC68xxx family has a wide variety of CPU models within it based upon different CPU core implementations. Ignoring the Coldfire parts, the part numbers for these models are generally divided into MC680xx and MC683xx. The MC680xx models are more general purpose processors with no integrated peripherals. The MC683xx models, on the other hand, are more specialized and have a variety of peripherals on chip including sophisticated timers and serial communications controllers.

Architecture Documents

For information on the MC68xxx and Coldfire architecture, refer to the following documents available from Freescale website (`http//www.freescale.com/'):

• M68000 Family Reference, Motorola, FR68K/D.
• MC68020 User's Manual, Motorola, MC68020UM/AD.
• MC68881/MC68882 Floating-Point Coprocessor User's Manual, Motorola, MC68881UM/AD.

RTEMS CPU Architecture Supplement

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