Grauw:
[about compressing GFX data:]
>> Run-length or even some more advanced pattern based compression.
>> I once implemented this compressed gfx fileformat:
>>
>> 1 byte: repeat
>> 1 byte: pattern length
>> n bytes: pattern
>
> Believe me, I know how run-length works.
Well, the compression I mentioned is usually not seen as RLE. RLE is
only encodes/compresses repeating *bytes* not *patterns*.
> I actually think run-length isn't a very good compression in this case,
> since the file-format of the tiles probably hasn't got much repeating
bytes
> in it.
You'd be surprised, I think. Anyway, the issue is the trade-off between
fast decompression or a good compression rate. More advanced compression
techniques like LZW (as used in GIF) bring pretty good compression but
decompression is slow on MSX and needs a lot of (temporary) memory...
Eric
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