A1

In computing, A1 means Address 1 code.

An a1 code interpreter, by Matthew Newhook was used to test compiler output. It requires gcc 2.4.2 or higher and is portable to computers with memory segment protection.

[1]

See also:

• Programming language

This article (or an earlier version of it) contains material from FOLDOC, used with permission.

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There are also several roads named the A1:

A1 road, Britain from London to Edinburgh

A1 road, Italy from Milan to Naples

A1 road, Northern Ireland from Belfast to Newry