Screen display

The screen is laid out so that the full rule of the automaton is displayed, the corresponding totalistic rule, and the semitotalistic rule. This latter is obtained by summing the diagonal cells to get one coordinate, the antidiagonal cells to get the other. There is little sense to separating a ``central'' cell from the remainder with this kind of geometry. If this is all done in text mode, enough space remains to display the traditional help panel on the right hand side of the screen.

 
Figure: CAMEX 2-D (4,1/2) menu  

There is enough space in the data segment of the INTEL 8086 to accommodate a very rudimentary de Bruijn diagram calculation for automata along with the data pertaining to the main program and to the option itself. The strips of width 3 which can be computed barely suffice to establish the existence of de Bruijn diagrams, but there wouldn't be enough space for four cell strips even if a separate submenu were allocated for the purpose.

Nevertheless the de Bruijn option occupies a separate graphics mode screen, whose characteristics and operation follow the description given in the section on de Bruijn diagrams for Moore automata.

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Harold V. McIntosh
E-mail:mcintosh@servidor.unam.mx