Assembler

the project consist of 2 pases :

pass 1 :

• Specifications:

  1. Parsing SIC/XE code in formatts 2,3 & 4.
  2. Handling directives BYTE,WORD,RESW,RESB,ORG & EQU.
  3. Generate the symbol table.
  4. Generate the source file of code with assigned addresses.

• Design :

  The main design consist of 4 modules parsing ,validation, executing the pass1 algorithm & printing the output.

  • The parsing module extract the components of each line.
  • The validating module validate the components of every line.
  • Then executing the algorithm and printing the output.

• Main data structures :

  • Arrays & Lists : contain the components of every line sequenchelly.
  • Maps : made one to one mapping between the operation code & their hexadecimal values & formats
  • Created data structures LIne & Rows : carry the values of the line components.

• Algorithm :

- Assumptions : - Add comments in free format preceded with “.” - Don’t enter literals & expressions.

• Sample runs :

pass 2 :

• Specifications:

  • The assembler is to execute by entering assemble .
  • The source file for the main program for this phase is to be named assemble.cpp.
  • The output of the assembler should include (at least):
    • Object-code file whose format is the same as the one described in the text book in section 2.1.1 and 2.3.5.
    • A report at the end of pass2. Pass1 and Pass2 errors should be included as part of the assembler report, exhibiting both the offending line ofsource code and the error.
  • The assembler should support:
    • EQU and ORG statements.
    • Simple expression evaluation. A simple expression includes simple {A -op- B} operand arithmetic, where -op- is one of +,-,*,/ and no spaces surround the operation, eg. A+B.
    • Literals (Including LTORG) =C’’, =X’HEX-TEXT’, = forms

• Design :

  The main design consist of 5 main modules parsing ,validation, executing the pass1 algorithm, executing pass 2 algorithm & printing the output

  • The parsing module extract the components of each line.
  • The validating module validate the components of every line.
  • The pass2 module generate the object code for each line and print it in a file.
  • Then executing the algorithm and printing the output.

• Main data structures :

  • Arrays & Lists & vectors : contain the components of every line sequenchelly.
  • Maps : made one to one mapping between the operation code & their hexadecimal values & formats.
  • Created data structures LIne & Rows : carry the values of the line components.

• Algorithm :

• Sample runs :

a detaield Explanation can be found here Report 1 , Report 2

Running

Clone & install

• Clone this repo https://github.com/Magho/Assembler
• cd Assemblerp
• run assembler.exe file

Authors

• Magho
• AhmedHesham
• ritasamir
• Mohamed Kamal

License

LICENSE.md