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From: rubywand@aol.com (RUBYWAND)
Newsgroups: comp.sys.apple2.programmer
Subject: Re: WANTED: DHR screen snipper
Date: 24 Jan 1996 11:23:53 -0500
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In article
<supersede.lazarus.long-1201961322380001@longgpc.sea.adobe.com>,
lazarus.long@adobe.com (Lazarus I. Long) writes:

>
>i'd like to be able to snip Double-High Res screens like this:
>
>get your graphic on screen, ex: play AirHeart or Thexder or some such
>swap in your screen snipping disk
>reboot
>the snipper disk boots and then saves your DHGR graphic ....
>
>obviously this would need to be in DOS 3.3 cuz ProDOS clobbers your hi
res
>graphics while booting

    I do not own a IIe and can't say whether it immediately wipes display
areas of Main mem upon a cold reboot. If it leaves them alone (like the
II+ does),  then capturing DHR game screens should be possible via your
RESET-Boot scheme. 

    You can get around the ProDOS overwrite-on-boot problem by patching
Block 0 on the diskette. (You can use the Aux Move routine at $C311 to
move $2000-$3FFF to Aux Mem $4000-$5FFF early in the booting process.) 

    The rest is easy. Just start your DHR.SNIP program and have it move
the block you stuck in Aux $4000-$5FFF back to Main mem $2000-$3FFF. Now,
you can flip the correct soft switches and display the pic.

   To save in standard 1-file format, move $2000-$3FFF to $4000-$5FFF and,
then, move Aux $2000-$3FFF to Main mem $2000-$3FFF.

BSAVE Picname, A$2000, L$4000



Rubywand