[Coco] [COCO] SuperIDE SuperDrivers and DVDROM IDE drives
Gene Heskett
gheskett at wdtv.com
Fri Sep 21 07:55:16 EDT 2012
On Friday 21 September 2012 07:16:02 David Ladd did opine:
> Just a quick check to see if anyone has managed to use a IDE DVDROM
> drive on the CoCo using the SuperIDE and the SuperDrivers?
I don't know about that combination as my setup is scsi, but I believe that
the drivers from Chris Hawks are required because the native sector sizes
of the CD/DVDROM is 2048 bytes. I believe the superdriver only translates
between 512 byte sectors and the coco's native 256 byte sectors. It does
this nicely on both of the 1gb scsi drives I have hooked up.
That is something I should check into as I do have a scsi cd reader.
Humm, according to Cloud9's site, it does appear that the superdriver
should support a cdrom's 2048 bit sector. But with only the usual 24 bit
addressing, a DVDROM would overflow if it was more than 90% full. 4Gb max
drive size. That, with the size of our corpus of os9 software, shouldn't
be a problem. :(
There is one gotcha in the superdriver, but I'd have to go boot up mine to
get the details. The docs aren't too clear in places.
Cheers, Gene
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