lördag 14 december 2019 skrev jim stephens via cctalk <cctalk@classiccmp.org >:
> > > On 12/14/2019 1:10 AM, shadoooo via cctalk wrote: > >> Hello, >> I also was searching about a clear SMD specification years ago, I found >> something in disk documentation from CDC, but doubts remain, because some >> disks call the interface SMD, some other CMD, never understood the >> difference... >> > CMD was the name of the division that manufactured the disks, FWIW. Not > heard of CDC calling it anything other than SMD. It was their golden > goose, so though it's not really a spec, reading the specs of any CDC drive > of an equivalent capability as you are looking for is probably what any > standard would contain. I think the name of the division was MPI. CMD was the Cartridge Module Drive aka Phoenix. http://bitsavers.informatik.uni-stuttgart.de/pdf/cdc/discs/CDC_Drive_Models.txt But as far as I know the interface of the SMD drives and CMD drives were identical. At least the Norsk Data ND10 used them both on the same interface in the computer end. /Mattis > The big problem they faced was there wasn't a second act for them, despite > spending huge amounts on a lot of other products. They continued using > oddball interfaces to try to pull the same stunt and people didn't fall for > it twice. > > The closesest that anyone came to challenging them was the Trident > interface, but they crashed and burned anyway. > > When did you see something called CMD? > thanks > Jim > >> Andrea >> >> >> >
