while sending pilot bios target communication error

hi this is swamy from India.i am working on RCM 3000 . it"s my own design .Based on RCM3100 core module. here i am getting one prob .
1.I am unable to programme the RCM3000 after few programing cycles . it is showing the error “while sending pilot bios target communication error” pls help me to come out of this prob .
a) one thing i have observed that same unit work for some times in that time the cs1 pin of the
RCM3000 is low. CS1(chip select of the RAM).
b)And same pin will be high when it is unable to programme.

pls my i know on which condition the cs1 pin will be high.

I had a same problem. I solving change my programmer wire. I sorry for my very bad english.