What is a Sirius? - test-drb@ccmp.vtda.org

10 Jul 1999

Hi Tony,

...
 ....The only firmware on the disk controller board is
the GCR
encoder/decoder ROM and the microcontroller for the spindle
motors. Neither of those would change for DS drives. And I'm
not suprised that the boot ROM will boot a DS drive either. 
Quite, IIRC when you're using DS drives the system treats each side of the disc
as a separate drive. So in a dual floppy machine you'd have drives A through D
(A/C and B/D) - under DOS anyway.

  TTFN - Pete.

--
Hardware & Software Engineer. Sound Engineer.
Collector of Arcade Machines, Games Consoles & Obsolete Computers (esp DEC)

peter.pachla(a)virgin.net                   |
peter.pachla(a)vectrex.freeserve.co.uk      |
peter.pachla(a)wintermute.free-online.co.uk | www.wintermute.free-online.co.uk
--