64tass Reviews

This is the best 6502 assembler. Accept no substitute.

Fast and cool!

Solid assembler, with nice syntax

We've started a new retro project using the 65816. We would not be able to do much without a solid assembler.

A featurerich assembler veteran

best 6502 assembler available

The best 6502 assembler you can get. I use it regulary.

Underrated, underused. Small file size, no deps, updated regulary here on sourceforge, good results. Thank you!

If you are looking for an assembler that works fast and flawlessly, with syntax that is easy to understand and work with -- this is the assembler for you. I have been using 64tass for over five years and believe me -- the instant I see an update message I stop here and get the newest version! The interesting part for me is that I have never encountered an actual bug! My projects are always fairly involved, too (such as writing a new OS for the SuperCPU in VICE), so I tend to put 64tass through its paces whether the project is large or small. Did I say fast? Oh, it's fast. A million source bytes a second or better, I reckon. Great listings, frequently updated, the benefit of an extremely helpful author when you need him, and the fact that 64tass includes a wonderful 65816 assembler makes it very easy to "highly" recommend AND declare that it is by far the best 65xxx assembler I have ever used. Oh... and the price is right. :D