pr-mittal / PersonalComputer

Bulding a personal computer from scratch , including the software and harware architectture

PersonalComputer

• ALU/CPU design and implementation using elementary logic gates and flip flops in HDLWriting
• Assembler , VMTranslator and Compiler to parse Java like high level language responsible for converting bytecode to machine-specific code
• Understanding Object-based design and programming, abstract data types, scoping rules, syntax and semantics, references

Summary

1. The HACK Computer
   1. THE ISA
2. The JACK Compiler
   1. Memory Segements
   2. Function Implementation
   3. The JACK Tokenizer
   4. Compiling Epxressions
   5. Crafting the Compiler
   6. Symbol Tables
   7. Object Construction
   8. Array Implementation
3. The OS
   1. Heap Management
4. The Big Picture

References

1. http://www.craftinginterpreters.com/contents.html
2. The Elements of Computing Systems: Building a Modern Computer from First Principles : Book by Noam Nisan and Shimon Schocken

The HACK Computer

THE ISA

The JACK Compiler

Memory Segements

Function Implementation

The JACK Tokenizer

Compiling Epxressions

Crafting the Compiler

http://www.craftinginterpreters.com/contents.html

Symbol Tables

Object Construction

1. A constructor allocates memory for the object on the memory heap based on the number of fields and returns the reference to the start of memory segment allocated fot this object
2. For further calls we use the this pointer(containing the memory address of start of class) to access the variables stored for that class

Array Implementation

• We use the that pointer for this approach , it stores the address of the location from which we want to read/write the data
• We push the data at that = arr+expression1

The OS

Heap Management

The Big Picture

Exposure: Computer Architecture , Machine Language , Compiler Design , Operating System