读HLS Bluebook(三)之 IO and Memories

IO主要包括通过数值传递和通过指针(或references\数组)。

Unconditional IO

对应于"wire"类型，没有握手协议。

Unconditional IO is used most often for either control type interfaces, where the IO does not change, on in designs that are pipelined with II=1 and the IO is read or written every clock cycle.

具体细分如下：

Pass by Reference

Pass by reference is when a variable is declared as either a pointer or a reference on the design interface. This means that the data that the variable “points to” or “refers to” is stored externally. In other words the “data” is stored off-chip.

Example 5-1. Unconditional IO Passed by Reference
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