=> R0 = pointer to 36 byte buffer
R7 = pointer to CDFS control block
This SWI returns the CD-ROM device information - the same as returned by the SCSI Inquiry command.
Note: Non-SCSI drivers fake this block as best they can. Do not rely too much on some of the SCSI specific values making sense.
CD_Inquiry buffer
Offset Contents
0 device type
4 length of block - 4
5-6 reserved
7 interface flags
8 vendor identification, space padded to 8 characters
16 product identification, space padded to 16 characters
32 product revision level, space padded to 4 characters
CD_Inquiry device type
Bit Meaning
0-4 Device type
0 Direct access device
5 CD-ROM device
7 Optical memory device
8 Medium changer device
5-7 Device qualifier
0 Device is connected
1 Device is not connected
3 Target doesn't support any device
8-14 Device type modifier (should be 0 for SCSI I compatibility)
15 Device is removable
16-18 ANSI-approved version supported
19-21 ECMA version supported
22-23 ISO version supported
24-27 Response format
0 Follows SCSI I format
1 Compatible with pre-SCSI I devices
2 Follows SCSI II format
28-29 reserved
30 Device supports Terminate I/O Process message
31 Device supports asynchronous event notification
CD interface flags
Bit Meaning
0 Device responds to the reset condition with soft reset
1 Supports tagged command queuing
2 reserved
3 Supports linked commands
4 Supports synchronous data transfer
5 Supports 16 bit data transfers
6 Supports 32 bit data transfers
7 Supports relative addressing mode
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