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Add documentation for FIFO queue component#434

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Nihal4777 wants to merge 1 commit intoCircuitVerse:masterfrom
Nihal4777:docs-fifo-queue
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Add documentation for FIFO queue component#434
Nihal4777 wants to merge 1 commit intoCircuitVerse:masterfrom
Nihal4777:docs-fifo-queue

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@Nihal4777 Nihal4777 commented Aug 2, 2025

Fixes #433

Changes done:

  • Task 1: add documentation for FIFO queue component

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✅️ By submitting this PR, I have verified the following

  • Checked to see if a similar PR has already been opened 🤔️
  • Reviewed the contributing guidelines 🔍️
  • Sample preview link added (add a link from the checks tab after checks complete)
  • Tried Squashing the commits into one

Summary by CodeRabbit

  • Documentation
    • Added a new section detailing the FIFO Queue circuit element, including its behavior, configurable properties, pin descriptions, and an interactive example, to the sequential elements documentation.

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coderabbitai bot commented Aug 2, 2025

Walkthrough

A new section describing the FIFO Queue circuit element has been added to the sequential elements documentation. This includes behavioral details, configurable properties, a pin description table, and a live example placeholder. The FIFO Queue is also listed among the sequential elements at the start of the document.

Changes

Cohort / File(s) Change Summary
Sequential Elements Documentation
docs/chapter4/6sequentialelements.md
Added documentation section for FIFO Queue, including behavior, properties, pin descriptions, and example. Integrated FIFO Queue into the list of sequential elements.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Assessment against linked issues

Objective (Issue #) Addressed Explanation
Document the newly added FIFO Queue Component (#433)

Assessment against linked issues: Out-of-scope changes

No out-of-scope changes found.

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Actionable comments posted: 2

🧹 Nitpick comments (2)
docs/chapter4/6sequentialelements.md (2)

23-24: Keep the contents table alphabetically consistent

In the table-of-contents list you inserted FIFO Queue after EEPROM. All other items are alphabetical; please move the new bullet below EEPROM to keep ordering predictable.

-  - [EEPROM](#eeprom)
-  - [FIFO Queue](#fifo-queue)
+  - [EEPROM](#eeprom)
+  - [FIFO Queue](#fifo-queue)

650-655: Move the default depth sentence into normal text

Placing the default in a blockquote makes it look like a call-out. Consider integrating it into the paragraph for consistent styling.

-The `Depth` property controls the **maximum number of entries** the queue can hold. It can be changed via the **PROPERTIES** panel.
-
-> Default depth is `8`. You can set custom values as needed.
+The `Depth` property controls the **maximum number of entries** the queue can hold (default `8`). You can adjust it in the **PROPERTIES** panel.
📜 Review details

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📥 Commits

Reviewing files that changed from the base of the PR and between 9d37221 and 8551e3e.

📒 Files selected for processing (1)
  • docs/chapter4/6sequentialelements.md (2 hunks)
🔇 Additional comments (1)
docs/chapter4/6sequentialelements.md (1)

595-596: Verify “Direction” is an actual property

Direction is listed as a configurable property, but the current implementation of the FIFO element in CircuitVerse does not expose such a field (only BitWidth, Depth). If this is accurate, keep it; otherwise remove to avoid confusing users.

Comment on lines +599 to +604

- When `ENQ` is HIGH, the value on `D` is stored into the queue (if not full).
- When `DEQ` is HIGH, the next value is output from the queue (if not empty).
- If `RST` is HIGH during a clock edge, the queue is cleared.
- Output indicators reflect queue state (`EMP` = empty, `FULL` = full).

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🛠️ Refactor suggestion

Document concurrent ENQ + DEQ behaviour

When both ENQ and DEQ are asserted on the same rising clock edge, what happens? Users will inevitably try this. Add one sentence clarifying whether the queue performs a “pass-through”, prioritises one action, or treats it as undefined.

🤖 Prompt for AI Agents
In docs/chapter4/6sequentialelements.md around lines 599 to 604, add a sentence
explaining the behavior when both ENQ and DEQ are asserted simultaneously on the
same rising clock edge. Clarify if the queue performs a pass-through,
prioritizes one action over the other, or treats this condition as undefined to
guide users on expected behavior.

Comment on lines +662 to +665
<iframe
width="600px"
height="400px"
src="https://circuitverse.org/simulator/embed/<INSERT_PROJECT_ID>"
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⚠️ Potential issue

Replace the <INSERT_PROJECT_ID> placeholder or drop the iframe

Leaving the placeholder breaks the embed and renders a 404. Either supply a real public example ID or remove the iframe until one is available.

-src="https://circuitverse.org/simulator/embed/<INSERT_PROJECT_ID>"
+src="https://circuitverse.org/simulator/embed/REPLACE_WITH_VALID_PROJECT_ID"
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
<iframe
width="600px"
height="400px"
src="https://circuitverse.org/simulator/embed/<INSERT_PROJECT_ID>"
<iframe
width="600px"
height="400px"
src="https://circuitverse.org/simulator/embed/REPLACE_WITH_VALID_PROJECT_ID"
>
</iframe>
🤖 Prompt for AI Agents
In docs/chapter4/6sequentialelements.md around lines 662 to 665, the iframe src
attribute contains a placeholder <INSERT_PROJECT_ID> which causes a 404 error
when rendered. Replace this placeholder with a valid public project ID from
circuitverse.org to ensure the embed works correctly, or remove the entire
iframe element if no valid project ID is available yet.

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Documentation of FIFO Queue Component

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