I have a problem, similar to these.
I added a 40 pin ZIF socket to a WIN-ISP board and use it as my programmer with FlashMagic. I have problems entering boot mode on the very first time (brand new IC). I have a backup boot mode similar to eric's solution, so as long as I can get my stuff loaded, I can always get back to boot.
Sometimes it takes several power cycles with PSEN low and a couple presses of the reset button to get the chip into boot mode.
I am currently using P89C51RC2BN/01, with plans to move up to the RD2 part, so I would like to get this fixed......
P2.6 and P2.7 are floating, also.
Any ideas on things to check or try... eric? Andy?
Is there a support guy at Philips that might lend a hand?
Thanks guys!
Bob