Hi everybody there !
I have some chips of this type that I have blowed someway the boot vector. The fact that Philips doesn't provide any information about parallel programming to the end user/developer is depressive.
Now lets look what philips says in the documentation - the interface is the same as 87c51 but not exactly ... No one knows what that means, but it is the same - it responds exactly to the erase command of the original 87c51. Now lets try do develope some parallel programmer and to try to progam the boot vector - I have found hex for fixing the boot vector, and there should be some way to be uploaded to the chip? Is there someone who wants to enter to project like that ? is there who knows something about the parallel programming of chips of this type ?