Now,I'm using Keil software debug TI MSC1210. When I connect ISD51,the screen shows the following information: "Loaded application does not match the ROM content!Please program your application into the ROM of your taget system again."whereas my download programme is identical to the debug program.
What version of ISD51 and C51 are you using?
C51:v7.01 ISD51:v1.00 (not Beta 0)