Ehiremen / dlx-assembler

An assembler that converts dlx-format instructions to 32-bit binaries

dlx-assembler

an assembler that converts dlx-format instructions to 32-bit binaries. done using C++ and compiled on JetBrains CLion.
the program reads a dlx-format instruction file and converts each line to its equivalent assembly language format. the assembly instructions get written to a file (instr.txt)--this can be changed in "void convertAndWriteInstr(vector vecOfCodeLine, vector vecOfLabelsAdr)" ~line 546.

my approach:

• read the input file (specified by the user in string getFileName())
• convert to lowercase and store in a new file (lower.txt)
• remove commas, colons, and parentheses from the lower.txt file, and store in a new tokenated file (tk.txt)
• read the first word of each instruction and check if that word is in either Opcode OR ALUFunc map; if not, we identify it as a label
• finally, run void convertAndWriteInstr(vector vecOfCodeLine, vector vecOfLabelsAdr) to generate the binaries for each instruction

NOTE: dlx_assembler.cpp is fairly large (~600 lines), but everything called in main() is either a defined class or a defined function so this code can readily be divided into multiple source files

files included:

• dlx_handouts.pdf - dlx instruction format and examples
• dlx_assembler.cpp - the main file for the project
• tempMap.h - a header file that goes with dlx_assembler.cpp
• CMakeLists.txt
• input.txt - sample input file