A friend of mine noted that both Choplifter! (1982)(Broderbund Software)(US)[a][!].atx and Choplifter! (1982)(Broderbund Software)(US)[a2][!].atx in the a8preservation archive replace the copy-protection check at $067D with a JMP past it. In other words, these are cracked disks. Should they have the [!] label attached to them, which I understand to mean a pristine dump of original media? Now if these images were made from a budget re-release disk, that might explain why they were cracked. Companies were known to do budget re-releases and eliminate copy protection which was not cost-effective to replicate. Can anyone shed more light on the subject?