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Yacc 0.4.0.3 Released
greg | January 18, 2008
Ah, compress it — compress it reeeal good. Oooh, baby, baby. Baby, baby. Kapoue3 has a new version of Yet Another CSO Compressor (YACC) for download. Compress those chunky ISO images to BOOSTER’s CSO and/or Uncle Jam’s JSO format. CisoPlus! is supported as well.

YACC 0.4.0.3 changes:
- Russian translation by In$ane
- Greek translation by koutsou.
- Added the dummy boot.bin option in CisoPlus configuration panel. Save some kB or MB when you create your CSO.
Download: Yacc 0.4.0.3
- source: yacc.pspgen.com
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always a nice app, glad to see its still being developed
nice
so does this compress even beter?
Great Job! I like compressing ISO’s
I switched over to Yacc from PSP ISO Compressor v1.4 and I never looked back. This is a great util. Love the batch processing. ;)
does this compress ps1games as well???
No, it’s meant for PSP games that are in ISO/BIN/CUE format, and it converts it so they are smaller. I’d suggest Simple Popstation GUI. It compresses them to the same level 9 compression as YACC does, and lets you edit your icons and stuff.
sweet!!! thank you
This one is great got my “grip shift” backup from 789mb to 84mb! haha!
Whoa. How do you play a jso?
nvm
I compressed Initial D from 1.1gb to 600mb but the damn FMV skips :( anyone had any luck with this game? is there a setting to compress likt to 800mb? thanks
yea set the compression level (1-9)
I’ve never used this APP before, how do you get your converted PSX to CSO’s to boot?
Never mind, I’m a dipshit, this program isn’t even made for doing that.
Fantastic program! Thanks!
OH JAM! another?
how nice.. also greek translation! w00t!!!
God job! Thanks
it only made my fifa 08 10mb smaller, am i doing something wrong?
cool
when i convert to cso, they are only a few mb smaller, am i doing something wrong?? please help??
No your not doing anything wrong, just some games compress smaller then others. Guess it depends on what type of files in the iso that get compressed.
how do i play the jso and dax files on my psp???
Very NICE RUSSSIAN translation :)
VERY NICE SPASIBO ISO Ya lublu !!!
In the advaced options. Which is better Ciso or Cisoplus!
CisoPlus!!! It’s the unique new compressor!!!, other softwares are just (stupid(solmetimes)) GUI. On top of that I think that Yacc is the best GUI for what it is designed, even if the author can still add new functions