Tuesday, May 2, 2023

Lenovo LT2252p wide and Amiga 500 NTSC VGA

 I got a Lenovo LT2252p wide and tried it with an Amiga 500 NTSC with a buffered VGA adapter.  It looks great in 640x200 and displays 640x400 interlace fine with some jitter.


However, it has a strange behavior when switching back from interlace workbench 640x400 to non-interlace 640x200.  The screen display goes black and won't come back on.  The monitor's on, with the green power LED, just no screen display.

Turning the monitor on and off with the power button doesn't bring the screen back.  

Unplugging/replugging the VGA doesn't bring the screen back.  

Unplugging/replugging the power doesn't bring the screen back.


What did bring the screen back?  resetting the amiga with ctrl+Amiga+Amiga or launching DeluxePaint3 and using dpaint3 to switch modes.  

Oddly, once you've got a dpaint non-interlace screen paired with an interlaced workbench, there's no problem switching screens.


Other than that bizarre blank screen behavior, it works fine.  Go figure.


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