How to use the check8.exe utility? What are the parameters? I got this example form the download. check8 %1.bin /s0x0000 /e0x3FFE /p0x3FFF /v0x80 What do the parameters mean? check8 can force the checksum to be a fixed number. How does it do that? By adding a byte into the rom somewhere? Where will it be? Thank you for answering my questions. chao.