MIT System 99 source tree for the MIT CADR

This is System 99.32 with microcode 322. We do have a load band for this, but the sources have not been updated to reflect the current state.

The following files had errors (suggesting corruption) when running through wfconv:

The following had non-NUL bytes in in the 5th byte:

The microcode (ubin/ucadr.mcr) is short, and is not valid.