I have an Slackware 3.1 from September 1996 nfomagic CD.
I think that the error is:
#define SONY_BLOCK_SYNC_ERR 0x33
but I dont find what means.
I make an diff between the cdu31a.c from linux2.0.20 and linux 1.3.42
but the differences was very small.
I somebody can hekp me ( with the solution or an advice where to search)
I would be happy.
Regards, Juan.
PS. PArdon for my bad English.