Hi all,

- I'm using FlashMagic
- EA=5V
- PSEN=0V
- Crystal=20MHz
- P2.6 and P2.7 are not connected so =5V (thru internal pull-up)
- I do a reset
- I send the command 'Check part signature' from FlashMagic

Then, I can see with a scope that on RS232 some bits are sent to the 89c664, and then the 89c664 answer just a few bits and the communication stops with an error message.

Any idea ?
Thanks

Stephane