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6R6
Registered: Feb 2002
Posts: 244 |
Disabling AR freeze button
Is it possible to disable the Action
Replay freeze function 100% ?
In that case, please enlighten me... :)
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Krill
Registered: Apr 2002
Posts: 2847 |
So... make all damn emulators work with raw images, it's not like we don't have the storage or RAM space. :) |
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chatGPZ
Registered: Dec 2001
Posts: 11123 |
VICE has support for it, so does micro64 (p64) - but as said, since almost nothing requires it, its not really tested, and probably has bugs :=) (hoxs64 also has support for some kind of raw images, but no idea if our how that works).
for something like 1541U the size of the image is actually still a problem (it must fit into the ram completely, and non compressed) |
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Krill
Registered: Apr 2002
Posts: 2847 |
One would think that they compress rather well, with a simple algorithm which allows for efficient on-the-fly decoding in hardware... :) |
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chatGPZ
Registered: Dec 2001
Posts: 11123 |
that just cant be done, you need a raw bitstream - else you cant implement writing in any practical way. you also want to be able to "rotate" all tracks in perfect sync, which also rules out compression. |
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Krill
Registered: Apr 2002
Posts: 2847 |
Being restricted to mounting an image read-only isn't such a bad thing, especially with protected commercial software. As for the other drawback, i'm sceptical. Indices have been invented. :) |
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chatGPZ
Registered: Dec 2001
Posts: 11123 |
in the worst case you'd have to decompress an entire track at once. that kind of thing just doesnt work in hardware. |
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Krill
Registered: Apr 2002
Posts: 2847 |
I was thinking of on-the-fly RLE decompression or Huffman or something along those lines. Can be indexed for quasi-random access and aligned rotation. No need to decompress entire tracks. |
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chatGPZ
Registered: Dec 2001
Posts: 11123 |
even then - you never want to do this. in hardware you always want to do small things in regular intervals, never one huge operation that has to happen "now". |
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Krill
Registered: Apr 2002
Posts: 2847 |
There is no huge operation involved, and every sub-operation has an upper bound for data to be accessed and logical complexity.
Anyhow, this discussion doesn't really belong here, plus bigger/faster FPGAs and other devices will come along eventually, allowing for straight-forward raw image operation. |
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enthusi
Registered: May 2004
Posts: 675 |
I still think you can master a tape that will always load but never on emulator. I should maybe give that a try :) |
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