Changes between Version 8 and Version 9 of io_operations


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Timestamp:
Oct 5, 2016, 5:46:02 PM (6 years ago)
Author:
alain
Comment:

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  • io_operations

    v8 v9  
    1717ALMOS-MK supports ''multi-channels'' peripherals, where one single peripheral controller contains N channels that can run in parallel. Each channel has a separated set of addressable registers, and each channel can be used by the OS as an independent device. Examples are the  TXT peripheral (one channel per text terminal), or the NIC peripheral (one channel per MAC interface).
    1818
    19 Th composite index is implemented as a 32 bits integer, where the 16 MSB bits define the type, and the 16 LSB bits define the subtype.
     19The set of available peripherals, and their localisation in a given many-core architecture must be described in the '''arch_info;py''' file. For each peripheral, the composite index is implemented as a 32 bits integer, where the 16 MSB bits define the type, and the 16 LSB bits define the subtype.
    2020
    2121== B) Device Descriptors Placement ==