参数资料
型号: IPT-C2H-NIOS
厂商: Altera
文件页数: 87/138页
文件大小: 0K
描述: C2H COMPILER FOR NIOS II
标准包装: 1
系列: Nios®II
类型: Nios II
功能: C 到硬件编译器
许可证: 初始许可证
C-to-Hardware Mapping Reference
that performs Avalon-MM pipelined read transfers. Inside the
accelerator, the master port connects to a FIFO, which guarantees the
accelerator can receive data for all pending read transfers, regardless of
whether the state machine stalls.
Figure 3–24 shows the dependency graph for Example 3–37 , which
demonstrates a loop that pipelines memory accesses with latency. This
example uses the connection pragma to connect the master port for
variable list to a slave memory named
my_mem_with_two_cycles_read_latency , as described in section
“Master-Slave Connections” on page 3–23 .
Example 3–37. Accessing Memory with Latency
#pragma altera_accelerate connect_variable
sum_elements/list to
my_mem_with_two_cycles_read_latency
int sum_elements (int *list, int len)
{
int i;
int sum = 0;
for (i=0; i<len; i++)
sum += *list++;
}
Figure 3–24. Accessing Memory with Latency
Altera Corporation
November 2009
9.1
3–47
Nios II C2H Compiler User Guide
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