Hello boys and girls, and sorry for this boring question.
I have been trying 1-2 year with HC08GR8 and HC08QY4 controllers, and use custom built monitor circuits based on the Motorola/Freescale book circuits (factory pdf docs.) and it's working perfectly, except one thing.
I can't start these CPU-s in normal user mode.
1. Upload 1 simple code (led blinker) to flashrom. Offcourse it working perfectly from debugger software.
2. Setup the reset vectors to my code. (example:fffe:ee , ffff:00) (My code first instruction address: $ee00)
3. Connect/disconnect the required pins, followed reference books. (example: IRQ pin vTST disconnect, external osc disconnect, etc.)
4. Turned on the power and do nothing. (Original power is a 12v car battery, what is regulated to 5v with 7805 + 2 capac.)
This is the result with GR8 and QY4 both of them.
I was beginning to give up with this CPU-s, I do not understand why is it so hard, and why didn't describe this thing clearly in factory docs.
I did everything from GR8 and QY4 reference books 100%, but it's not working.
This forum is my last chance, please help me somebody.
Thank you very much to everyone. (My english is not perfect sorry.)