Selecting the D-DISP sourceUsing the Data Selector buttons you select what to display in the D-DISP. That can be Memory or any of the internal registers: A, B, C, D, E, PC, SP, OR, IR. You can change your selection at any time during program execution or when the computer is in Halt mode.
Immediately after power-on all registers (except F and IR) as well as all memory cells contain nothing but random values. You may want to select "Memory" at this point because it is convenient for entering your star up program.
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Homebuilt CPUs WebRing
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Join the ring?
David Brooks, the designer of the Simplex-III homebrew computer, has founded the Homebuilt CPUs Web Ring. To join, drop David a line, mentioning your page's URL. He will then add it to the list.
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Project start date: May 13 of 2009
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