Feature: 50 Hz frame rate #7
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Current frametick value must be saved/restored between CMotherBoard::SystemFrame() calls. For example, if CPU/PPU breakpoint triggered in a middle of frame processing current timing state of frame will be lost after resume via 'g' debug command or pressing 'Run'toolbutton. Sometime this leads to various FDD failure while debuggin, for exmple. This fix is incomplete, because exact number of scheduled and processed CPU/PPU ticks is still loss, but currently it is don't have much impact and can be interpreted as oscillator frequency deviation on real HW (anyway it is not cycle accurate emulation). Of course, we need also rework debugger's step command. Currently this one doesn't processing any timed event on peripherials, just steps CPU/PPU by one instructions and handle interrupts.
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Часть этих изменений применил в коммите 4f1c4a3 |
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Update screen every 20 ms (instead of 40 ms), because we can.