>> A66 file

A66 file format description

Many people share .a66 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .a66 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .a66 files.

1 filename extension(s) found in our database.

.a51 - µVision Assembler Source Code

The A51 development files are related to µVision. A51 file is a µVision Assembler Source Code. µVision is a window-based software development platform that combines a robust and modern editor with a project manager and make facility tool.

Development files
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µVision Assembler Source Code related extensions:
Adobe Flash Exchange Data
Adobe Flash FlashHelp Skin Data
Adobe Flash FXP Library
DataFlex Web Business Object
RemedyBG Debugger Data
CMSIS Pack Vendor Index

Naturally, other applications may also use the .a66 file extension. Even harmful programs can create .a66 files. Be especially cautious with .a66 files coming from an unknown source!

Can't open a .a66 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .a66 file format, then write to us!

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