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ConvImgCPC Packed Screens

Started by redbox, 16:43, 13 December 10

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redbox

Does anyone know how to decompress screens saved as 'packed' (or 'compacte' in French) in ConvImgCPC?

I can't find details of the algorithm used anywhere...

Devilmarkus

Maybe these 2 files will help you:
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redbox

Thanks, will take a look - I think these are for LZW compressed screens so will have to check if ConvImgCPC uses this.

I used to have (back in the day) a really nice CPC utility that took a normal 16kb screen, compressed it (probably just RLE), added a decompress routine and then saved it to disk.  To load the screen, you just loaded the file, called the routine and it decompressed it to the screen (&C000).

I can't for the life of me remember what it was called and have searched but come up with nothing.  Anyone remember what it was called...?

redbox

Quote from: redbox on 00:14, 15 December 10
I used to have (back in the day) a really nice CPC utility that took a normal 16kb screen, compressed it (probably just RLE), added a decompress routine and then saved it to disk.  To load the screen, you just loaded the file, called the routine and it decompressed it to the screen (&C000).

Yay, I found one on CPC Rulez:)

AMSDOS

redbox wrote:

Thanks, will take a look - I think these are for LZW compressed screens so will have to check if ConvImgCPC uses this.

I used to have (back in the day) a really nice CPC utility that took a normal 16kb screen, compressed it (probably just RLE), added a decompress routine and then saved it to disk.  To load the screen, you just loaded the file, called the routine and it decompressed it to the screen (&C000).

I can't for the life of me remember what it was called and have searched but come up with nothing.  Anyone remember what it was called...?


The one I remember which was on an AA Covertape was SQ23 which I used a bit, AA used to have a few Screen Squashers in the Type-ins as well - the one I recall called Squeeze was in AA57, which had you entering the Screen Colours and Screen Mode, all worked well, though I think SQ23 was faster and allowed you to arrange how the screen was drawn I think - though it didn't allow you to set screen inks or mode, not that it was a problem and in some ways it worked to it's advantage!  ;D  Unfortunately SQ23 is one of those programs you pickup from the Robot PD Library and it's sadly on one of those disks which isn't on David Cantrell's website, but I might have a copy somewhere on one of my utility disks (if that's the program your after).
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redbox

Quote from: CP/M User on 12:09, 20 December 10
The one I remember which was on an AA Covertape was SQ23 which I used a bit, AA used to have a few Screen Squashers in the Type-ins as well - the one I recall called Squeeze was in AA57, which had you entering the Screen Colours and Screen Mode, all worked well, though I think SQ23 was faster and allowed you to arrange how the screen was drawn I think - though it didn't allow you to set screen inks or mode, not that it was a problem and in some ways it worked to it's advantage!  ;D   

Yes it was Squeeze, well done for remembering that one!

The one from CPCRulez (above) works fine for me though, so no need to dig it out thanks.

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