Problem Session 2 for ECE 109 / CSCI 255

This problem session is associated with Assignment 2.

Problem 2 -- Memory

Start with a short talk about memories and a few related questions.

• How many bits are in 256MB?
• How many 16-bit words are in a 512MB memory?
• What is the word size of a 128kB memory with 16k words?
• How many bytes are in a memory with 1M of 32-bit words?
• How many address bits are required to address a memory with 16M words?

Problem 2

Here are a few examples of legal floating point numbers in the Pascal programming language.

• 1.0
• 1.0e9
• 1.0e+9
• 1.0e-9
• 1e9
• 1e+9
• 1e-9

The one significant diffence between Pascal and C/C++/Java is that there must be digits before and after the decimal point. In C, 1.e+9 and .1 are legal.

Now let's do something similar to Assignment 2 for Pascal floating point numbers. It should give you a state table and, if you are ambitious, a set of equations.