This chapter is from the book
This chapter is from the book
This chapter is from the book
3.6 Exercises
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Write a code segment that contains just one statement to import file basic_types.e.
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Determine which comments in the following piece of e code are written correctly. Circle the comments that are written incorrectly.
<' Import the basic test environment for the CPU... import cpu_test_env; '> This particular test requires the code that bypasses bug#72 as well as the constraints
that focus on the immediate instructions.
<'
/*Import the bypass bug file*/
import bypass_bug72;
//Import the cpu test file_0012
import cpu_test0012;
--Import the cpu test file_0013
import cpu_test0013;
'>
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Practice writing the following numbers. Use _ for readability.
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Decimal number 123 as a sized 8-bit number in binary
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A 16-bit hexadecimal with decimal value 135
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An unsized hex number 1234
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64K in decimal
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64K in e
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Name the predefined constants in e.
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Write the correct string to produce each of the following outputs.
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“This is a string displaying the % sign”
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“out = in1 + in2 \\”
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“Please ring a bell \t”
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“This is a backslash \ character\n”
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Determine whether the following identifiers are legal:
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system1
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1reg
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~latch
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@latch
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exec[
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exec@
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Define a macro LENGTH equal to 16.
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Declare the following fields in e.
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An 8-bit unsigned vector called a_in
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A 24-bit unsigned vector called b_in
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A 24-bit signed vector called c_in
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An integer called count
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A time field called snap_shot
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A string called l_str
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A 1-bit field called b
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Declare an enumerated type called frame_type. It can have values SMALL and LARGE. Declare a field called frame of this enumerated type.
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Write the following actions with simulator variables.
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Assign the value of simulator variable top.x1.value to len field in e.
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Write the value 7 to the simulator variable top.x1.value.
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Describe the four levels of e syntax hierarchy. Identify three keywords used at each level of the hierarchy.