I could've sworn I had an IDE CDROM working just fine with one of my A4k's running default OS3.1?
There's a CD Filesystem included with 3.1 (L:CDFileSystem) and all I had to do was change the cd0 mountlist to look at scsi.device unit 1 (via the tooltype) and stick it in DEVS:DOSdrivers. However the filesystem doesn't have joliet support (so filenames are limited to MSDOS-style 8.3)
Isn't atapi.device only for use with those 4-way adaptors so that you can access the second IDe channel?
Hmmm.. maybe my memory is playing up