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#581 C128 VDC emulation glitches
In a demo Risen from Oblivion VDC V2 (pouet) (download) (youtube from real hw), with x128 2.4.10, rev.28787, with VDC set to rev.1, 64Kb, machine set to C128 PAL:
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at the screen after loading, count of clocks in "A VDC RASTERLINE TAKES 63.0xxx ..." fluctuates from run to run (by pressing reset to reload demo). It is probably not a bug, but I don't have real HW to check.
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The first plasma effect has clearly visible glitches at the top (0:22 on video).
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Rasterbars scroll (1:51 on video) has glitches on border, while in the video border stays black.
Plasma part issue fixed in r39293, should make it into 3.5.
Issue 1 is fixed in r40618 with some improvement to the VDC busy state emulation, cycles per line now varies slightly between runs as expected.
Issue 3 would be resolved implementing R34/35 (horizontal blanking) support in the renderer. Last time I tried to do that the raster code got in the way by drawing the border when we didn't want it to, and raster is an undocumented pile of spaghetti code.