Please help me with this VPL problem.

Please use those supported materials and answer this question

On Problem 1-3, you will be given a snapshot of part of the memory and the registers of a VPL machine while some program is executing. Your job on each problem is to demonstrate your understanding of VPL semantics by executing a few instruction as specified. You should simply trace what happens by crossing out old values in cells and writing in new values whenever that happens, and similarly in the registers. If there is any output, write it in the console box provided.

You would be well-advised to write auxiliary information on the memory picture, like we always do, to help you trace what is happening.

2. Trace execution of the given code through completion of command 2:

A Very Primitive Language For the rest of our introduction to the course (including in-depth study of a number of im- portant issues relating to designing and implementing imperative programming languages) we will study a toy language known as VPL (for very primitive language") To begin, we will specify the syntax and semantics of VPL, and then you will have a project to implement VPL (which will turn out to be quite easy) The main requirement for this language is that it be very easy to specify and implement. One major consequence of this requirement is that we will only work with integer values, and input/output operations and other utility functions that could easily be provided are kept to a minimum. This work provides a first example of specification of a programming language, begins our study of implementation of programming languages, will be used later as the platform for discussing all sorts of imperative language implementation issues, and will provide a very gentle introduction to language design issues In a sense, all procedural languages are just spiffed up versions of a language such as this The following description of VPL makes sense in the context of the imple- mentation we have in mind, so implementation suggestions will be integrated with the language description. This makes sense, since we are sort of creating a virtual processor as we describe the language Page 1 CS 3210 Spring 2017