On 2/19/19 12:37 PM, Glen Slick via cctalk wrote:
  On Tue, Feb 19, 2019 at 5:39 AM Bill Gunshannon via
cctalk
 <cctalk at classiccmp.org> wrote:
 All sounds like fun, but if the two emulations don't do RA81
 correctly the information doesn't really do me much good.  I
 certainly can't change the CQD's idea of what an RA81 is.
 
 I have mostly used CMD CQD-220/TM controllers. As far as I remember
 they do not have an RA drive emulation option. 
I have a 220A/TM and it certainly does.  Pages 4-10 thru 4-15
of the manual, particularly Configuration Options "A" and "1".
 I also have some of the newer CMD CQD-220A/E controllers (the 220A/E
 being Either MSCP or TMSCP but not both at the same time, while the
 220A/TM can be both MSCP and TMSCP at the same time). I'll see if I
 can find some time today to take a look at the RA drive emulation
 option using a CMD CQD-220A/E controller, and see exactly what it
 reports for MSCP drive geometry.
  
Not familiar with the 220A/E it's not mentioned in my manual.
Probably a much newer version.
bill