Scripting Interview Question 2 | Physical Design | Floor-planning | Tcl Programming

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Scripting Interview Question 2 | Physical Design  | Floor-Planning | Tcl Programming

Role: Physical Design

Company : Product Based

Experience: 5+ years

Suppose you are working on floor-planning for a block-level implementation, and one of the key tasks is macro placement. In this scenario, there are special cells in the design that need to be placed according to specific requirements:

  1. The cells must be uniformly placed throughout the chip.
  2. The block has dimensions of 500 μm in height and 1000 μm in width.
  3. The distance between adjacent special cells should be 10 μm in both the vertical and horizontal directions.
  4. Each special cell has dimensions of 2 μm x 2 μm.
  5. The first special cell should be placed with an offset of 5 μm from the origin.
Write a TCL script to implement this placement strategy at floorplan stage.

Instructions for Submission:

  • Please post your answers in the comment section below.
  • For detailed explanations and solutions, check the answers later on compile-vlsi.blogspot.com


Happy Learning !

#scripting #coding #Tcl #pd #physicaldesign #physicalverification #pv #vlsi #design #india #semiconductor #freshers #professional #hardware #floorplanning #motivation #leadership







Comments

  1. Ravi SankarJune 27, 2025 at 1:40 AM

    set H 500

    set w 1000

    set cell_height_width 2

    set offset 5

    set cell_place [expr $cell_height_width + $offset]

    for {set x 5} {$x <= $w} {incr x $cell_place} {

    for {set y 5} {$y <= $H} {incr y $cell_place} {

    set name "Special_${x}_${y}"

    puts "create_cell -ref_name NAND*****ULVT -name $name"

    puts "set_cell_location -location/cordinates {$x $y} $name -physical_Status -fixed"

    }

    }



    sample solution

    create_cell -ref_name NAND*****ULVT -name Special_5_5

    set_cell_location -location/cordinates {5 5} Special_5_5 -physical_Status -fixed

    create_cell -ref_name NAND*****ULVT -name Special_5_12

    set_cell_location -location/cordinates {5 12} Special_5_12 -physical_Status -fixed

    create_cell -ref_name NAND*****ULVT -name Special_5_19

    set_cell_location -location/cordinates {5 19} Special_5_19 -physical_Status -fixed







    use file handling and save to another file or use catch



    let me correct if there are any mistakes



    ReplyDelete

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