Assembler Directives - Altera Cyclone V Device Handbook

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The DMAC ignores single burst DMA requests.

<periph> Sets bs to 0 and p to 1. This instructs the DMAC to continue executing the DMA channel

thread after it receives a single or burst DMA request. The DMAC sets the request_type to:

• Single: When it receives a single DMA request.

• Burst: When it receives a burst DMA request.

You can only use this instruction in a DMA channel thread.

Write Memory Barrier forces the DMA channel to wait until all of the executed DMAST instructions for that

channel have been issued on the AXI master interface and have completed.

This permits read-after-write sequences to the same address location with no hazards.

Figure 16-24: DMAWMB Instruction Encoding

Assembler syntax

You can only use this instruction in a DMA channel thread.

Assembler Directives

The assembler provides several additional commands.

Assembler directive to place a 32-bit immediate in the instruction stream.

Assembler directive to place an 8-bit immediate in the instruction stream.

Assembler directive to insert an iterative loop.

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DMA Controller

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