Wednesday, September 30, 2020

CMS 9619 Drivewire Boot to NitrOS-9

I finally got drivewire running on the CMS 9619 SBC. As a result, I managed to complete the bootup and have a virtual disk! Source code available on github.


  1. Did you have to modify the software timing loop in Drivewire to get it to work at 2MHz?

    1. Hi Joel,
      No timing changes since I am using the 6551 ACIA drivewire. I tried using the bit banger, but I never had any luck. I may try again for kicks, and to free up an ACIA.