LPC2388 programs only once

[PQPGuy]

Andy,

Yes, there IS a power controller (89LPC931) that goes to sleep if it doesn't hear back from the device for 60 seconds.  Which FM setting (in the latest version) should I use to overrule this behavior?  I have the "use DTR and RTS to enter ISP mode" option checked and the "assert DTR and RTS while COM port is open" one unchecked.

Lowering the baudrate proved pointless.  Of course, I've tried this like one million times.

Many thanks.

[Andy Ayre]

What exactly does the LPC2388 need to do to tell the 89LPC931 to keep it alive? Send data on the UART? Some other signal?