u/hieg_siel

A queue (q[$]) is contiguous storage. It's indexable and we can push/pop elements from the front and back in constant time. If we call pop_front() or pop_back() on an empty list, we get an error. Although it's called queue for historical reasons, it's closer to python's list.

A mailbox is a FIFO that blocks both ends. put() adds an item and get() removes an item. Mailboxes are unbounded by default, but we can make them fixed size. Mailboxes synchronize the flow of transactions between components/threads: when the source thread tries to put a value into a sized mailbox that's full, that thread blocks until the value is removed. Likewise, if a sink thread tries to remove a value from a mailbox that's empty, that thread blocks until a value is put into the mailbox. Queues don't offer this synchronization

Note: A mailbox never holds objects directly, only handles to them. By default it has no fixed type, so nothing stops you from putting a mix of unrelated data into the same mailbox, whereas queues are statically typed so int int_q[$] can hold only values of type int. Always parameterize your mailbox (mailbox #(Transaction) mb) instead, so a type mismatch is caught at compile time rather than corrupting your testbench silently at runtime.

logic replaces the old wire and reg from Verilog to get rid of the confusion regarding when to use which data type. logic can hold 4 different values: 0, 1, X, Z. In order for a variable to hold 4 states, it takes up 2 bits of memory.

To improve simulator performance, SV introduces a 2-state variable called bit, which can only hold 0 and 1.

We use logic for any signal that might become X or Z (if the RTL is buggy). Typically, we use logic for signals driven by the DUT, and bit for signals generated by the TB.

If a signal driven by the DUT is declared as bit, and the buggy DUT drives an X on that signal, it might show up as either 0 or 1 — making the bug harder to catch.

What the sub is about:

SystemVerilog and UVM. RTL basics, testbenches, verification methodology, all the way up to full UVM environments.

What to Post:

- projects / resumes

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- debugging help

- concept breakdown

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- pirated books

- pirated video

- cracked licensed software

- any discussions regarding piracy

Happy Learning.

Anna thamudlaki akka chellilaki andariki namaskaram. Nenu rjy lo putti hyd lo perigi ippudu blr lo nivasistunnanu. Desham motham protests avtunnayi kada, Andhra rashtram lo ekkadaina jaruguthunnaya? Ante telusukundam ani adugutunna ante.

Kakinada, Vijayawada, Guntur, Rjy, Tirupati, asalu ekkadaina avtunnaya? Any info?

Asalu janalu ela react avtunnaru? Mi friends, family em antunnaru?

Eeroju first time life lo mummy scooty ichi koncham dooram pampinchindi, pani meeda, and evado erripuku tagiladu.

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Na pakkana bikes cars oka 28-32 lo velthunnayi, nenu oka 40 lo velthunna. Traffic koncham undi, road madhyalo evado sudden break vesdu. Vadi venakala anna kuda sudden ga break veyalsi vachindi, anna venaka nenu break vesa kani time distance saripoledu. velli anna bike ni kotti kinda padda.

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Na bad luck enti ante mundu light velli sarigga anna bike number plate ki tagilindi. Anna bike ok, koncham scratches padini. Na scootyki light pagilindi, inka pedda sotta padindi.

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Intlo amma titlu apatledu, daddy office lo unnadu evening vastadu.

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Evado kani erripuku ventane paripoyadu.

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Na bike ethi, road pakkana pettina uncle ki thanks cheppadam marchipoya. Madhapur 100 feat road lo jarigindi incident, okavela ah uncle miku teliste na vaipununchi koncham thanks cheppandi pls.

Edit: today I found out that my mom loves her scooty more than me