Problem for programming P89V51RD2

[jess]

Hello everyone,

I've got a problem. I'm working on a new board (with P89V51RD2) based on a older validated board (with P89C51RD2).
To program the old board, I used Flash Magic directly (I did not have to reset the P89C51RD2).
Now I want to program the P89V51RD2 on my new board. When I try to read the device signature, I've got a message : "Reset the device into ISP mode now". What is the way to follow ?

Another question (I'm just beginning in programming such micros) : I've got a code working on P89C51RD2 ; what must I do (excepting choosing the rigth device to get the .hex file) to obtain a .hex file working on P89V51RD2 ?

Thank you !

Jess

[Andy Ayre]

The ISP entry method is different on these devices than on the 89C51RD2. See the datasheet for details. If you wern't resetting your 89C51RD2 to program it, how were you placing it in ISP mode?

[jess]

Thank you for your answer but now it's ok !

[Andy Ayre]

Can you please post the solution for the benefit of future readers? Thanks.

Andy