Motorola 6800 Cross Assembler

[Charles Wall]

I am looking forward to an Altair 680 -Duino and thought I would learn a little about the Motorola 6800 processor.  Any recommendation for a nice 6800 Cross Assembler would be appreciated.  The simplest thing for me would be something that runs on a Windows based PC or a web-based product.  Suggestions would be appreciated.

[Kelly Loyd]

I use VASM for 6502/6800/Z80 assembly. I built it from source or there are binaries available.

http://sun.hasenbraten.de/vasm/

[Chris Davis]

I used Bruce Tomlin's asmx multi-CPU assembler: http://xi6.com/projects/asmx/

[Mike Douglas]

Here’s a ready to go version that runs in a command window even under 64 bit Windows 11

https://deramp.com/downloads/swtpc/software/6800%20Cross%20Assembler%20(Windows)/

Mike D

[Charles Wall]

Thanks Mike, I will give this one a try.

[Tom Wilson]

And looking for an 6800 instruction reference, I came across this. It's an online M6800 assembler:

https://www.8bit-era.cz/

So far, it only seems to write out Intel Hex records, but that's still a super useful resource, as it includes a very handy reference page.