[Coco] Old Fuddy-Duddy Question

[tim franklinlabs.com]

   I was at the  VCFMW show last week and bought a virgin CoCo 2 for
   $25.00. I figured, "What the hell". Finally got to turn it on and it
   works. It's still got the original seal on the screw. However, it's
   only got 16K of RAM and Basic 1.2. So, my old fuddy-duddy question
   because I'm lazy, When I put in the SDC, it doesn't see the DISK ROM.
   Do I need to have Extended Color Basic ROMS for that to work?