Normal ExecutionThe Machine Control section of the Console allows you to start, stop or continue a program loaded in memory, either in Normal or Step execution mode.
When you press the START button, execution starts at the address currently shown by the A-DISP. This is the normal way to run the starting program you just entered as explained in previous section.
Immediately after pressing the START button, the computer falls into Run Mode meaning that the program is now in full control of the machine. The A-DISP continually shows the memory address being accessed (either by the Program Counter or other register). The D-DISP shows the corresponding content if "Memory" is selected on the Data Selector, or the selected register's content otherwise.
In Run Mode, buttons in the Entry Section get locked. Buttons in the Machine Control Section get locked too with the exception of HALT. You can let the program to run normally or you can stop it by pressing the HALT button after which the machine will fall into Halt Mode after have finished to execute the current instruction.
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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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