Instantiating Arria ii half-dsp block

Hi - thanks for the info.

I've looked thru the templates, and they all seem pointed at a particular sub-function of the block, i.e. a muliplier, a multiply add or multiply-acc function.

None of them seem to expose the chain_in/chain_out feature that I need for cascading half-dsp blocks for a FIR filter. This is shown in the Arria ii handbook in figure 4.5 - the half-dsp block diagram.

How can I get a VHDL template that corresponds to figure 4.5? Without a template it seems like I will need to attempt to model the half-dsp block in VHDL and modify it until the Quartus synth tool agrees that all the functionality can be placed in a single half-dsp block. This can be very time consuming.

THanks,