Our website provides a free download of Yacc 0.4.0.3. The latest version of the program can be installed on PCs running Windows XP/Vista/7/8/10, 32-bit. The program is categorized as Multimedia Tools. The common filenames for the program's installer are Yacc.exe or Yacc_0.4.0.1_Installer.exe etc. This free program was originally produced by kapoue3. The following versions: 0.4 and 0.3 are the most frequently downloaded ones by the program users.
From the developer:
Yet Another Cso Compressor (YACC) is as its name indicates a GUI using simple program of Compressed Iso Converter BOOSTER.This program compresses the ISO of a PSP game to a new cso file smaller and it is not uncommon to reduce more than one-half size of the majority of iso.
You may want to check out more software, such as Flex Windows Lex and Yacc or Python PLY, which might be related to Yacc.