This useful cartridge combines all the features of a monitor, an assembler and an editor for use in writing or learning to write machine code programs.

The cartridge is smaller than most and hardly rugged but performs its job very well.

It is supplied with very impressive documentation in the form of an 80 page manual which comprehensively explains all of MACE's features and many of the elements of the 6809 assembly language.

However, any beginner to assembly language programming and indeed some old hands will need a full reference guide.

The cartridge is surprisingly simple to use and does save valuable time in preparing and writing a machine code program. I particularly liked the assembler which among other things has the ability to assemble without a listing to screen, printer, tape or memory.

It also comes up with text error messages - very helpful in detecting any coding errors, a feature I unfortunately need too often!

It would be impossible to detail all the functions of this versatile cartridge.

C.G.