Task $2$: Paint a number $(10$ marks$)$ The template for this task contains data for bitmaps of the digits $0-9,$ stored at the label DigitPixels. Each digit consists of $3$x$5$ pixels of data. The first $3$ words are the first row of pixels, the next $3$ words are the second row, and so on$.$ For example, the digit $2$ is represented as $00000000$ FFFF FFFF FFFF $0000$ FFFF $0000$ FFFF $0000$ FFFF FFFF $000000000000$ You can see the pattern here, the zeros $$paint$$ the shape of the character $2$ in black, with the background in white $($FFFF$).$ Your task is to write a subroutine called SubDrawDigit that paints a digit into the graphics memory. The beginning of the subroutine should be structured as follows: DigitDataAddress, HEX $0$ DigitDisplayAddress, HEX $0$ SubDrawDigit, HEX $0$ In the DigitDataAddress argument, you will pass the address of the first pixel data for the digit you want to paint, as defined in the DigitPixels. In the DigitDisplayAddress argument, you will provide the address of the top$-$left corner in the graphic memory where you wish to start painting the digit. For example, to paint the digit $0,$ starting from the second pixel in the second row, we could use the following code: Load DigitPixelsAddr Store DigitDataAddress Load Display$11$ Store DigitDisplayAddress JnS SubDrawDigit Halt Display$11,$ HEX $0$F$11$ Note that the address $0$F$11($label Display$11)$ lies exactly $17$ words after the start of the graphics memory. This means we$$re skipping the first row $(16$ words$)$ and the first pixel in the second row $(1$ word$).$ Here we simply use DigitPixelsAddr to refer to the first character $($for the digit $0).$ For the other characters, we would have to add a corresponding offset into the DigitPixels memory.

To paint a digit in your subroutine, you can follow this $$recipe$$: $$ Each digit consists of $15$ pixels $(3$ columns x $5$ rows$).$ You need to loop through these $15$ pixels, loading each one from the DigitPixels definition and storing it in the graphics memory. $$ Your subroutine should contain two nested loops: o Outer Loop $($Rows$)$: Loop through each row of the digit. o Inner Loop $($Columns$)$: Within the outer loop, loop through each column of the current row. $-$ Retrieve the corresponding pixel data from DigitDataAddress $-$ Store the pixel data at the correct graphics memory address $($e$.$g$.$ DigitDisplayAddress plus the current row offset and current column offset$).$ Once you have $$copied$$ all $15$ pixels from the DigitPixels definition into the graphics memory, you can exit the subroutine. Your subroutine must include sufficient comments to help others $($such as the person marking your assignment$)$ in understanding the purpose of your code.