What’s your favourite (super small) 6502 assembly language tip?

Thanks to @colinhoad.com and his series on YouTube my online IDE now has the BBC BASIC game Cosmic Invaders for your retro entertainment ide.retrogamecoders.com?file=cosmic....

6502 assembly is what I'm learning atm. The pain of having 16-bit memory addresses with an 8-bit processor is understated.

Always nice to see a new 6502 macro assembler on the market. Love the carve out that you can't use it to program a T-800.

To celebrate the 50 years of the 6500 family I have added two manuals in good quality to the manuals section: MCS6500 Hardware Manual August 1975 First Edition, Version 6500-10. – MCS6500 Programming Manual by Synertek, version 6500-50. retro.hansotten.nl/6502-sbc/kim...

New blog post - What can you do to fix "?device not present error" on the Commodore PET, including an 8032 repair. blog.tynemouthsoftware.co.uk/2025/09/sd2p... Warning: also includes awful screenshots and an analogy involving a Ford Cortina.

So many programmers are around today thanks to the colorful illustrations and clear language of the Usborne computer guides

VS code allowed me to use a modern, standards-compliant IDE, across all my environments/targets (I still write 6502 code). Docker made it all easy to deploy. And of course, Azure DevOps made it easy to coordinate my teams.

Programming the 6502 of an ATARI 400 in Visual Code with Retroassembler. Compilation on the PC, execution on the ATARI.

Love this 6502 assembly language programming book by Christoper Lampton - read it when I was coding my Atari 2600 game Gene Medic atariprojects.org/2023/10/29/r... #coding #atari #atari8bit #atariprojects

Speaking or really cool books. Has anyone ever seen a first edition of "Programming the 6502" by Rodnay Zaks?

Ok, chips on the table, what's your favorite 6502-based computer? Apple? KIM, Atari, Commodore.. the list is a long one.

And on this date the chips were sold - at an unbelievable price for a CPU.

Some 6502 posting for the 50th anniversary

Happy birthday to the MOS 6502! It was 50 years ago today that people were able to buy their first samples of the chip from a jar in a hotel room at WESCON. Here's my oldest 6502 from the 52nd week of 1975. Still works perfectly!

What a great day to try some 6502 on your phone! apps.apple.com/app/id154835...

The 6502 CPU first went on sale 50 years ago today. Here's the story of how young Steve Wozniak ended up buying his out of a jar in a hotel room, which he used in the first Apple I computer. #retrocomputing dfarq.homeip.net/the-6502-cpu...

Development of the MOS Technology 6502: A Historical Perspective (2022)

50 years ago the first 6501 and 6502 CPUs were made available at the WESCON trade show in San Francisco. However, MOS found out they weren't actually allowed to sell anything on the show floor so set up shop in a nearby hotel. Chuck Peddle led the team that created the 650x family of processors.

The 6502 is fifty!

Happy 50th Birthday, 6502!

At #VCF Midwest. I have found my people

Bass 6502 Assembler is almost ready, to be released on 20 Sep 2025. Bass Manual is already up at bit.ly/bass6502asse.... Note: You may not use Bass to compile code for a T-800 Model 101 that could be harmful to humans. #8bit #crossdev #assembler #mos6502 #c64 #vic20

The 6502 is one of my all-time favorite microprocessors :-) hackaday.com/2025/09/10/6...

For me, it just depended on the project. The 6502 had some advantages over the Z80 in terms of bus architecture and instruction set efficiency, but I did appreciate the Z80 for things like math. And the extra registers really came in handy. There are still debates over which was "better" :-)

🤣🤣 Yeah, that's about it! Sitting here looking at two (very old) books on writing assembly on the Z80 and 6502.... Everyone's head would explode though if I claimed the 6120 (12-bit microprocessor version of the PDP-8) is the best 😁

I found a single KIM-1 at VCFMW

New blog post - making some new clip leads for my logic analysers. blog.tynemouthsoftware.co.uk/2025/09/logi... Time for a new set which are the right colour, have nice silicone cables and clips that work on ICs.

New blog post - a look at how things have changed since I first used microcontrollers in the early 1990s, and some of the new features they have managed to cram into the latest versions. blog.tynemouthsoftware.co.uk/2025/09/new-...

Excited for VCFMW and checking out any 6502 exhibits! vcfmw.org

65F02 is an FPGA 6502 with a Need For Speed

6502 Puts on an SDR Hat

If you are exhibiting at VCF Midwest, could I maybe put a few cards pointing to a free 6502 app on it?

And yes, it does run the recently open-sourced Microsoft BASIC.

The updated Virtual KIM 6502 Emulator app has gone live: apps.apple.com/app/id154835...

Microsoft has released the source code of BASIC, a version of its first operating system developed by Bill Gates and Paul Allen for the Intel 8080, now ported for MOS 6502 processors.

Retro computing enthusiasts rejoice at @Microsoft's open-source release of MOS 6502 #BASIC. hothardware.com/news/commodo...

Another vital part of my childhood, Space 1999, is fifty years old today. Somehow.

We had a VIC 20 at school and I used it a few times, but preferred using the CBM PET. I wanted to know more about the hardware so bought the official Programmer's Reference Manual ( 1982 ). It's a great book that covers the machine really well - it even has a fold-out system schematic. #Commodore

Bringing BASIC back: Microsoft’s 6502 BASIC is now Open Source | by Scott Hanselman & Stacey Haffner. opensource.microsoft.com/blog/2025/09... #oss #basic #programming #microsoft #opensource

Microsoft open-sources its 6502 BASIC from 1976 www.theregister.com/2025/09/04/m...

Might not be wrong.

Bringing BASIC back: Microsoft’s 6502 BASIC is now Open Source opensource.microsoft.com/blog/2025/09...

Microsoft have released 6502 BASIC to open source. Read more here: opensource.microsoft.com/blog/2025/09...

It's been ages since I did anything with my 6502 homebrew computer, so here is a video about benchmarks against classic machines from back in the day - always a controversial topic!😂 #homebrewcomputer #mos6502 #basic #80s #6502cpu youtu.be/pQFLyB10Uj8

I think the hottest argument home computing ever saw was z80 vs 6502

Write and run 6502 code on your phone TODAY. Useful if you need to impress potential employers or romantic partners.

Tiny C64 cassette tapes. Because why not? youtu.be/GQwTPH67YqY

Try the beta today! testflight.apple.com/join/vIXAtuLo

Got an iPhone or iPad? Try out this beta of a KIM-1 / Apple 1 / 6502 Assembler and let me know what you think. testflight.apple.com/join/vIXAtuLo