There is a great comparission thread here https://www.stardot.org.uk/forums/viewtopic.php?t=27861 with links.
I think it was something like lz77, but I didn't know that when I wrote it![:)]( "Smile")
I only wrote it to compress my games to fit in a 16K EPROM, or more if they use sideways RAM.
All my games, but not necessarily my "ports" from arcade ROMs can have their main "exe" loaded as a ROM or into SWRAM and launched from there, if they are in slot 0 on a master, they will auto boot, like a cartridge console.
I only need to compress about 17-20K into a 16K ROM with room for a ROM header to make the game load more quickly and fit in a ROM, so that is what it does with the minimum of space overhead. It is also position independent apart from the 5 bytes of ZP.
It is a shame that something similar wasn't built into the OS with a compressor on the Welcome disc.
It has been used by some games on here and all mine whether they need it or not as it is also used to move the game down on load.
It can completely overwrite the source data except a couple of bytes as long as it is moving down.
I think it was something like lz77, but I didn't know that when I wrote it
I only wrote it to compress my games to fit in a 16K EPROM, or more if they use sideways RAM.
All my games, but not necessarily my "ports" from arcade ROMs can have their main "exe" loaded as a ROM or into SWRAM and launched from there, if they are in slot 0 on a master, they will auto boot, like a cartridge console.
I only need to compress about 17-20K into a 16K ROM with room for a ROM header to make the game load more quickly and fit in a ROM, so that is what it does with the minimum of space overhead. It is also position independent apart from the 5 bytes of ZP.
It is a shame that something similar wasn't built into the OS with a compressor on the Welcome disc.
It has been used by some games on here and all mine whether they need it or not as it is also used to move the game down on load.
It can completely overwrite the source data except a couple of bytes as long as it is moving down.
Statistics: Posted by tricky — Sun Feb 18, 2024 10:46 am