Hugo Holden
Veteran Member
I have designed an altered version of the programmer board, with 6 additional connectors to be able to access the most of the likely required signals and feed in an alternate clock. Obviously if this process is to be successful I will have to get used to programming and verifying these CPU-EProms in the first place , regardless of anything else. So the programmer board makes a handy start to the problem.
Whether or not I will be able to get this CPU to deliver its internal Eprom contents to its ports is still very much conjecture, since the method to do it, if there is one, was not documented, and one might imagine that if they had gone to the trouble to write the firmware into the CPU to do it, they would have said something in the Application notes. Unless it was all "Top Secret". It may all turn out to be a wasted effort with the Eprom contents locked in forever, but I don't give up very easily.
Whether or not I will be able to get this CPU to deliver its internal Eprom contents to its ports is still very much conjecture, since the method to do it, if there is one, was not documented, and one might imagine that if they had gone to the trouble to write the firmware into the CPU to do it, they would have said something in the Application notes. Unless it was all "Top Secret". It may all turn out to be a wasted effort with the Eprom contents locked in forever, but I don't give up very easily.