CD_DiscUsed (changes)
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CDFSDriver
» SWI Calls
» CD_DiscUsed
CD_DiscUsed
(SWI &41253)
| Entry | |
|---|---|
| R0 | Addressing mode for returned size |
| R1 | Pointer to 8-byte block |
| R7 | Pointer to |
| Exit | |
|---|---|
| R0 | Preserved |
| R1 | Corrupted |
| R7 | Preserved |
8-byte block details:
| Offset | Contents |
|---|---|
| 0 | Size of CD |
| 4 | Size of blocks on CD |
Use
The purpose of this call is to return the size of CD currently in drive.
Notes
The size of a CD is calculated based on (((min * 60) + sec) * 75) + 151 frames.
See also
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