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 Post subject: Screenshots
PostPosted: Wed Jul 30, 2008 12:44 pm 
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Hello

Is there a way from any emulator to grab a 1:1 screenshot?

BeebEm has 320x256 presumably to keep the display correct, but I want a 160x256 MODE 2 screengrab. Does any emulator support that?


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 Post subject: Re: Screenshots
PostPosted: Wed Jul 30, 2008 7:06 pm 
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6502em-->640x512

!Beebit-->640x256


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 Post subject: Re: Screenshots
PostPosted: Wed Jul 30, 2008 8:12 pm 
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Have you checked MESS? They are quite strict about the graphic output being very faithful to the original and, I assume, the same goes with screenshots too - which is why it looks somewhat different to the other beeb emulators. Of course, it depends on how well-supported the BBC B driver is ... it works, but I don't know if it's been updated for a while.

Sam.


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 Post subject: Re: Screenshots
PostPosted: Wed Jul 30, 2008 9:26 pm 
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Actually 320x256 will do me just fine.

Ta anyway!


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 Post subject: Re: Screenshots
PostPosted: Thu Jul 31, 2008 12:42 pm 
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Maybe this is a dumb question.... but how do you save a screenshot in BeebEm? I've looked for this option many times, and never discovered it!


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 Post subject: Re: Screenshots
PostPosted: Thu Jul 31, 2008 12:51 pm 
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I don't think there is a way - I use Gimp and capture from window....

B-Em does save out screenshots though.


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 Post subject: Re: Screenshots
PostPosted: Thu Jul 31, 2008 12:56 pm 
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Best you'll get under Windows with BeebEm is Alt+Print Screen to capture the current window to clipboard and then you can paste it into your preferred graphics app - where you'll need to crop the Window borders etc. There may be other snapshot programs which can do that automatically ... Under Linux, I use KSnapshot to do something similar.

BeebEm itself only captures videos to files. As DaveF said, B-Em can capture screenshots directly, as can MESS.

Sam.


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 Post subject: Re: Screenshots
PostPosted: Wed Sep 03, 2008 3:18 pm 
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In case you're asking about all types of emulator, ElectrEm will copy the current display to the clipboard following either your OS's standard keyboard shortcut or you asking it to do so from the menubar. You can then paste that into whatever art program you want.

The images are always 640x512, but in Mode 2 that means that every 4x2 pixel block will be a uniform colour so getting any reliablepaint package to resize of resample to 160x256 should produce a pixel-identical version of the original screen, irrespective of whether the paint program point samples, box samples, Gaussians or whatever.

EDIT: ye olde ElectrEm (prior to about 2002) had an option to save a PCX (I think, might have been BMP) image of the current screen that would inspect it to find out the minimum resolution that could be used without losing data (which is not always dictated by the current screen mode because some games use multiple screen modes on the same display) - though I can't remember whether it would go to the extreme of saving a 4 pixel by 3 pixel image for a blank screen.

This stuff's all a lot easier on the Electron, as there is no CRTC and the region of the display that may have pixels on as well as the potential placement of those pixels is very rigidly defined.


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