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Altera_Forum
Honored Contributor
Honored ContributorNew IP development
Hello, I am interested in developing some instructions which can do the bignum operations (like adding two operands of 1024 bit) and hence by plan to implement a simple Full Adder like this: ...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- My problem with the performance counter block is that it is a 16bit slave - so it takes a lot of accesses to do anything. --- Quote End --- I'm not sure about the history of the block, but at least in the files sitting on my hard drive right now, it is a 32-bit slave. --- Quote Start --- With care and a combinatorial custom instruction (or 2) could be 3 instruction (I think). --- Quote End --- I'm not following you: I see two loads, one store, and one math function (4 instructions, or 128 total). I'm not intimately familiar with the instruction set: does NIOS have a double-load or add-and-store instruction? (how did you compress it down to 3?)
