how to restrict the uvm sequencer to pick from a set of user sequences

[worma]

For a testbench env, in which i need to run a predetermined set of directed transactions[to configure the dut] followed by any number of sequences randomly with the constraint to pick from a selected set of sequences how do i do it?? any ideas are welcome

[uwes]

hi worma,

you can build something along the lines of uvm_random_sequence. basically you can

1. create a sequence (uvm_constraint_seq having a member "string valid_seqs[]" )

2. add the valid_seqs member

3. translate all valid_seq strings into their seq_kind using get_seq_kind() (you should now have a list of valid sequence idx)

4. pick an element from that list

5. exec that sequence (do_sequence_kind(idx))

from your user-seq you can now say 'ovm_do_with(subseq,{valid_seqs=["my1_seq","my_two_seq"})

regards

/uwe