Zybo > Chronicles blog 49 > AMPの使用 > 7. OCMによるCore同士の通信 > OCMアクセスの優先度 > 1. SCU reads and writes / 2. Reads and writes initiated by OCM interconnect

MicroZed Chronicles リスト http://adiuvoengineering.com/?page_id=285
@ Adam Taylor blog
https://forums.xilinx.com/t5/Xcell-Daily-Blog/Adam-Taylor-s-MicroZed-Chronicles-Part-49-Using-the-Zynq-SoC-s/ba-p/518579

OCMへのアクセスは４つの方法がある
http://qiita.com/7of9/items/468ffbbef13a3f97c5b8

そのアクセスに関して優先度が決まっている

With multiple sources accessing the OCM, it is only sensible that a form of arbitration and priority is defined for the access protocols. SCU reads and writes have the highest priority. (Reads have higher priority than writes.) Reads and writes initiated by the OCM interconnect have the next highest priority. Note: You can invert the priority between the SCU write and the OCM interconnect access by setting the SCU Write Priority Low in the OCM Control Register.

1. SCU reads and writes
2. Reads and writes initiated by OCM interconnect

設定で優先度を逆転することもできる