Arria V Avalon-ST Interface for PCIe Solutions User Guide

ID 683733
Date 1/04/2023
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15.6.10.3. shmem_read Function

The shmem_read function reads data to the BFM shared memory.

Location

Syntax

data:= shmem_read(addr, leng)

Arguments

addr

BFM shared memory starting address for reading data

leng

Length, in bytes, of data read

Return

data

Data read from BFM shared memory.

This parameter is implemented as a 64-bit vector. leng is 1- 8 bytes. If leng is less than 8 bytes, only the corresponding least significant bits of the returned data are valid.

Bits 7 down to 0 are read from the location specified by addr; bits 15 down to 8 are read from the addr+1 location, etc.