I am trying to figure out how to play audio CD tracks using Novaxis SCSI so I can add support to it on Knightmare Gold. Luca (KdL) has sent me some docs from Henrik Gilvad and a CDDA.BIN plus a BASIC program that uses it. I downloaded also the datasheet for the WD chip which is used on Novaxis SCSI... but the CDDA.BIN "driver" seems to do a lot of checks (after the command is sent) very hard to understand without the real hardware in my hands.
I had never programmed any SCSI interface in my life, and I really don't know if all those checks are necessary. If they are, there is no way I can add support to it (too much delay, too much space needed).
Anyone here had ever programmed this beast?
All I need is:
a) A good routine to detect if this kind of SCSI is present (I believe I found one in a package named novaxispr.zip).
b) A routine to start playing music using MSF format.
c) A routine to read cd playing status in a specific address.
d) A routine to pause the cd playing.
I noticed there are routines ready for that on CDDA.BIN, and the data packages sent to SCSI to play CDs are very similar to ATAPI packages; but on IDE I have to send the package and that's all. As I said before, on CDDA.BIN the package is sent to SCSI... but that's not all: after that, a lot (A LOT) of checks are done.
I appreciate whatever help anyone could provide.
