Hi All!

I have problems with in-application programming of ST9 CPU using the Flasher 5 programmer unit.
I connected Flaher 5 to the target board according to the instructions in the UM05001_Flasher5.pdf manual.
When I try any of the target operations ( blank check, verify, clear, program, read memory ), I keep on getting "Error 75 - RAMCode does not work" error messages.
I've done a few tests to clear the situation and I'm afraid the RAM code that Flasher 5 sends to the ST9 CPU does not contain a proper code for my target!
Please give me an advice how can I get any further?
Are there more than one RAM code versions available that I could try ( I think it's inside the FW530.mot firmware file )?
Is it possible to customize the RAM code somehow?

Some more information about my tests:

My target processor is ST92V124 VLT6.
My target board is a commercially available microcontroller unit for alarm systems ( DSC PC1864 )
When I connect Flaher 5 and target properly, for any of the target operations I get:
Error 75 - RAMCode does not work
When I disconnect SOUT signal, for any of the target operations I get:
Error 70 - Illegal start byte received
When I disconnect TxCLK signal, for any of the target operations I get:
Error 71 - No start byte received
When I disconnect SIN signal, for any of the target operations I get:
Error 74 - RAMCode does not respond after start byte
When I disconnect RxCLK signal, for any of the target operations I get:
Error 74 - RAMCode does not respond after start byte

Thanks

Miklos Jurisits