Finally

I worked my way through Grant Searle's CBIOS and compared it to my CBIOS. I found a two disk set up errors but the main problem was not copying CP/M properly upon a Warm Boot. All fixed and CP/M now works properly.

I also redesigned my Flash ROM Programmer so I can upload a single (large) HEX8-16 file to the Flash ROM (i.e. W29C020). This save a huge amount of time over the old Flash ROM Programmer which uploaded just 16kb blocks in firmware.

Here is the happy MyCP/M V2 and the Flash ROM Programmer:

AlanX