Online Assembly language resources

Question

Hi, does anyone have any resources for learning assembly language on x86? I'm trying to debug a program in MSVC++6 and frequently come across assembly (like stepping into memcpy).. Previously I just ignored these but memcpy keeps throwing exceptions and I need to find out why..

Any help would be appreciated :)

EDIT:Wow, lots of great resources.. I wish I could mark everything as accepted answer :P

HINT: combine anyone? :P

New edit: I just looked through the answers, and these seemed the best:

Aseraphim's post specific to intel x86

jkchong's post for a more introductory text

Answer 1

Dunteman's "Assembly Language Step by Step" is a pretty good starting point for x86 assembly.

I'm sure there are good tutorial sites on the Net, but I'm not familiar with them.

Answer 2

If you just need to understand what each instruction does, the reference manual for the x86 Instruction Set is located here.

Answer 3

Online resources:

PC Assembly Language

Art of Assembly Language Programming

Answer 4

We used Microcomputer Experimentation with the IBM PC and Assembly Language Step-By-Step when I took it in school (back in the 1900s). Both are pretty good introductory books.

Answer 5

There are also two great communities about x86 assembly programming on Windows:

• ascommunity.net
• masmforum.com

If you are specifically interested in Visual Studio and the MS assembler (masm), you'll want to look into masmforum.com.