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基于XAPP996-双处理器参考设计套件
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The reference design suite in this application note contains three dual-core architectures.
1. Dual MicroBlaze Design
2. Dual PowerPC Design
3. A PowerPC-MicroBlaze dual processor design
All three designs illustrate two fully functional processor systems interacting with each other via
communication channels. Special cores are supplied as a part of the reference design
package. These cores provide simple synchronization and message passing features for use
between the two processors. These cores are：
1. OPB_Mutex
The OPB Mutex core helps achieve synchronization between multiple processors when
accessing shared resources. The core has a configurable number of mutexes and has a
write to lock scheme. More information about the core is present in the Mutex datasheet is
available by right clicking on the Mutex core in the Platform Studio IDE. The software
interface is provided by the mutex_v1_00_a driver which is also provided with the reference
design.
2. OPB_Mailbox
The OPB Mailbox core helps a processor pass simple messages to another processor in a
FIFO fashion. The Mailbox is suited for small to medium sized messages （《 a few 100
bytes）。 The mailbox also offers an interrupt line which indicates the presence of data in the
mailbox. More information about the core is present in the Mailbox data sheet which is
available by right clicking on the Mailbox core in the Platform Studio IDE. The software
interface is provided by the mbox_v1_00_a driver which is also provided with the reference
design.
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