[KH0UJ]

I thought mach3 is only 32bit.

Yes it`s a 32 bit software but can be run on windows 10 64 bit operating system.

[naspc]

Yes it`s a 32 bit software but can be run on windows 10 64 bit operating system.

I understand 32bit software can run on a 64bit system but when the developer is adamant about it not working on a 64bit system

This is from their website:

Mach3 Minimum Recommended Requirements:

Requirements if using the parallel port for machine control:

• Desktop PC (Laptops are not supported) with at least one parallel port
• 32-bit version of Windows 2000, Windows XP, Windows Vista, or Windows 7 (64-bit versions will not work)
• 1Ghz CPU
• 512MB RAM
• Non-integrated Video Card with 32MB RAM(Large G-code files, especially 3D files will require a video card with 512MB RAM or higher)

Requirements if using an external motion device for machine control:

• An appropriate external motion controller (options can be found on the Plugins page)
• Desktop or Laptop with Windows 2000, Windows XP, Windows Vista, Windows 7, or Windows 8
• 1Ghz CPU
• 512MB RAM
• Video Card with 32MB RAM(Large G-code files, especially 3D files will require a video card with 512MB RAM or higher)