Assembly w/C

You'll need the Microsoft Macro Assembler, MASM. It will compile the assembly source files and yield object files (.obj), which you can then link with the object and static import library files resulting from compiling your C files.

You might want to write header files to declare interfaces to any routines defined in the assembly files, as well as data structures. Watch your calling conventions!

What does the documentation say about including assembly language source files into the project? You might need to compile the .asm file separately and include the resulting .obj file in the project.

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Original post by Oluseyi You'll need the Microsoft Macro Assembler, MASM. It will compile the assembly source files and yield object files (.obj), which you can then link with the object and static import library files resulting from compiling your C files. You might want to write header files to declare interfaces to any routines defined in the assembly files, as well as data structures. Watch your calling conventions!

Yes, I tried compiling the .ASM source with ML and it up-chucked with some errors. I guess the file isn't met for MASM. Oh well. But I had defined C interface functions __cdecl or what ever it is. I had to change the file's build options. Adding the command line and output file parameters. That is when I got the errors from ML.

So I guess I was on the right track and it would have worked I think. You said static import libraries. Does that mean I have to use a .DEF file then. And would that mean ML would produce a .INC instead of a .OBJ?

Anyways, thanks for the reply.

It's becoming more of a problem to link with ASM source files then its worth. I think I'll just rewrite the emulator using glue-code and inline ASM.

I can some-what understand the ASM pretty good. Some instructions I'm a little worried about.

The more I learn about using the 6502 and other's the ASM is becoming more and more friendly. The addressing modes are what's holding me. Indirect Indexed and Indexed Direct are the two I have a few problems with. I understand the docs that describe the process of finding the *given* address. But the algorithm is a little hard for me to get just yet. I think its because I keep forgetting about the PC that is increaments and descrements during the operations.

Most of the instructions are fairly easy. Instructions that use Implied and Relative addressing modes make things easy to code. Which leaves the more advance addressing mores (i.e. Absolute, Zero Page) left to be coded.