Entry | |
---|---|
R0 | 0 to return track range, or a valid track number |
R1 | Pointer to 5 byte track block |
R7 | Pointer to CDFS Control Block |
Exit | |
---|---|
R0 | Preserved |
R1 | Preserved |
R7 | Preserved |
Following 5-byte block data format is used if R0 = 0
Offset | Contents |
---|---|
0 | Number of first track on CD |
1 | Number of last track on CD |
2 – 4 | Corrupt |
Following 5-byte block data format is used if R0 = track
Offset | Contents |
---|---|
0 | Logical block address of track start (ie mode 0 addr) |
4 bits as follows : | |
b0: = 0 audio, 1 = data | |
b1: = 0 4-channel, 1 = 2-channel | |
b2 – 7: Reserved |
The purpose of this call is to return track range, or info on a specified track.
None.