6502 Cross-Development Languages and Tools
   List of cross-platform assemblers and disassemblers targeting 6502 microprocessor, focus: Commodore 8-bit computers.
   http://www.npsnet.com/danf/cbm/cross-development.html

6502 Web Ring
   Hardware and software, programming and historical aspects of the 6502, 65C02, and derivatives. Home-built computers and operating systems for them.
   http://t.webring.com/hub?ring=6502webring

8051 Macro Assembler ASEM-51
   Assembler for the Intel MCS-51 family of microcontrollers. [Freeware]
   http://plit.de/asem-51/

8051 Visual Simulator
   An integrated development environment for 8051 assembly language programs allows you to control simulated peripherals such as a scrolling signboard, a robotic mouse, and an audio peak detector.
   http://www.computersciencelab.com/8051.htm

ARM Assembler Programming
   For the ARM (2 thru 7, and StrongARM) from RISC OS, one can start programming simply by using the BASIC assembler built into the computer. For C programmers, the APCS is described.
   http://www.heyrick.co.uk/assembler/

Asl
   Free, powerful cross assembler for many microcontrollers and processors.
   http://john.ccac.rwth-aachen.de:8000/as/

Assembler Gems
   Intel x86 and Motorola assembler snippets. Good collection of assembler algorithms in an easy to read format.
   http://www.df.lth.se/~john_e/gems.html

Assembly HOWTO
   by Konstantin Boldyshev, Francois-Rene Rideau: insightful, general systems and usage philosophy, and tips.
   http://www.tldp.org/HOWTO/Assembly-HOWTO/

Assembly Language
   Growing article, with links to many related topics. [Wikipedia]
   http://en.wikipedia.org/wiki/Assembly_language

Assembly Language forum at Tek-Tips
   Assembly Language technical support forums and mutual help system for computer professionals. Selling and recruiting forbidden.
   http://www.tek-tips.com/threadminder.cfm?pid=272

Assembly for Dummies
   Articles, tutorials, books, links, other resources for those wanting to learn assembly language.
   http://asm.inightmare.org/

Assemblylanguage.Net
   List of assembly language resources.
   http://www.cheapersunglasses.com//asm.html

Bixoft: Why Assembler?
   Advantages of assembly programming, prejudices against it, exposes myths.
   http://www.bixoft.nl/english/why.htm

CPU Specific Languages: Assembly Languages
   Link collection on assemblers, simulators, interpreters, all with source code. [RocketAware.com]
   http://www.rocketaware.com/orbit/Lo/spec/softdev/lang/assembly/

Digital Alpha ASM Programmers Guide
   This manual describes the assembly language supported by the Digital UNIX Alpha compiler system, its syntax rules, and how to write some assembly programs.
   http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/HTML/AA-PS31D-TET1_html/TITLE.html

LINOLEUM
   Low-level INterfaced OverLanguage for Extremely Universal Machine-coding. Cross-platform ASM, almost 1:1 language to CPU instruction ratio, new way to address memory units (n-flat address space), easier than Assembly, still low-level interfaced, may be mi
   http://anywherebb.com/linoleum.html

LINOLEUM: Peterpaul's Place
   Brief description, projects (yahtzee game, library archive), contact, downloads.
   http://home.versatel.nl/kleinhaneveld/

Linux Assembly
   On this site you will find various resources ranging from tutorials, documentation up to actual Linux and Unix tools written in assembly language.
   http://asm.sourceforge.net/

Machine Language For Beginners
   Full text of the classic book, focused on 6502 assembly programming.
   http://www.atariarchives.org/mlb/

MicroAPL Porting Tools and Services
   A range of products which translate assembly-language code into optimized code for other architectures. Products include Relogix, an assembler-to-C translator, and PortAsm/68K, which converts 68000 assembly language source to run on the PowerPC, Intel x86
   http://www.microapl.co.uk/

Programmers Heaven Assembler Zone
   Assembler sourcecode, development tools, links, articles and tutorials for wide range CPU. Messageboards.
   http://www.programmersheaven.com/zone5/

S12X.COM
   Archiving and mirroring resources for the HCS12(X) microcontroller. Has a full HCS12, HCS12X and X-Gate assembler. Also features a C/ASM editor for the HCS12.
   http://www.s12x.com/

Softpanorama Assembler Links
   Great site. Many excellent links, many in Russian.
   http://www.softpanorama.org/Lang/assembler.shtml

TMS9900 Assembler Macro Library for Controller Programs
   The TMS9900 and TMS9995 Assembler macros provide functions and function blocks akin to instruction list (IL) according to IEC 1131-3.
   http://adweb.desy.de/~erlandm/tms/controlmacro.html

Telemark Cross Assembler
   A cross assembler lot processor families (include 64k,x86,Z80).
   http://home.comcast.net/~tasm/

The Great Debate
   Contains a series of essays that discuss the advances of compilers and machine architectures in an attempt to answer the above questions: Do compilers produce code as good as humans? Will compilers ever produce code as good as humans? Is it worth it?
   http://webster.cs.ucr.edu/Articles/GreatDebate/index.html

The Little Man Computer: LMC
   Education model of simple von Neumann architecture computer, with basic features of modern computers, can be programmed in machine or assembly code. Runs as Java applet. York University; Toronto, Ontario, Canada.
   http://www.atkinson.yorku.ca/~sychen/research/LMC/LMCHome.html

Typed Assembly Language: TAL
   Extends traditional untyped assembly languages with typing annotations, memory management primitives, and sound set of typing rules. The typing rules guarantee memory safety, control flow safety, type safety of TAL programs. What do you want to type check
   http://www.cs.cornell.edu/talc/

Using the GNU Assembler
   Manual by Dean Elsner, Jay Fenlason and friends.
   http://www.cs.utah.edu/dept/old/texinfo/as/as_toc.html

XCASM
   A meta assembler with high level optimising code generation capabilities and powerful built-in macro processing facilities. [Commercial]
   http://xcprod.com/titan/XCASM/