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Virtual Front Panel (VFP) Overview

The VFP shows the processor registers, as well as the 6809 system address and data busses. There is a set of 8 user LED's which may be controlled directly from software running under the emulator, some dip swicthes, and some emulator step capability. Details are provided in the follwoing sections. The VFP is fairly simple to operate. You open or close it using the Modes, Panel menu items.

When it is open, it allows you to let the emulator run (when Run is checked) or to be stopped, and subsequently single stepped on a per-instruction basis, using the Step control. When single-stepping, the next instruction to be executed is displayed at the bottom of the panel.


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