Functional coverage to check each bit is toggled or not in a memory

Coverage
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In reply to dave_59:

In reply to mamathamanu:
Many tools have built-in toggle coverage so you don’t have to write a covergroup for it manually. Otherwise see Bitwise toggle coverage for a bitvector - SystemVerilog - Verification Academy

Hi dave, thanks for your response.so if i want to check individual bit i should create 128*8 instance of covergroup?.