Hi all,
In an embedded project I am developing I have implemented 2 different
custom instructions (in particular 2 "External Interface Custom
Instruction") with a variable Multi-Cycle.
Each custom instruction has the canonical inputs and oputputs as specified in the custom instruction application note:
INPUT: clk, clk_en, reset, start
OUTPUT: done, result[31..0]
Currently, these two custom instructions could be implemented with only
one piece of logic that can serve both instructions.
If I try to implement them with a single piece of logic, I get all the
input and output pins twice (one for the first custom instruction, one
for the second).
Are there any relationship between the first custom instruction's pins and
the second custom instruction's pins inside the ALU???
(For example, I would expect that clk, clk_en, reset, and other pins are simply the same signals routed once for each custom instruction...)
May I simplyfy the hardware I'm writing supposing that some pins arrive
only once to that unique piece of logic that serve more than one custom
instruction?
Thank you!
Matteo
