Entry
R0 = addressing mode, for returned size
R1 = pointer to 8 byte block
R7 = pointer to CDFS control block
Exit
R0 preserved
R1 corrupted
R7 preserved
This call returns the size of the CD currently in the drive. The call works with audio CDs as well as with CD-ROMs. The size is returned in the block pointed to by R1 on entry :
Bytes Contents
0-3 Size of CD
4-7 Size of blocks on CD, in bytes (usually 2048)
Note that R1 may be corrupted on exit.
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