Since 8051 doesn't provide the instructions:
cjne rn, rn+1, relative
cjne acc, rn, relative

It make the job for comparing two register quite cumbersome.

Usually, I compare the content of two register by using subtraction technique. That is,acc = r0-r1, check
acc == 0, r0==r1
acc <0, r0<r1
acc >0, r0>r1

I was wondering whether you have any better techniques for doing this?
Do share it with me.

thanks

regards
yccheok