Hello,
I want to check if there is an equivalent instruction of the MOVX at the C language.
I tried doing in-line assembly with no luck.
Any assistance is appreciated
Don't Atmel and/or Keil provide a C51 header file?
What is your specific difficulty in 'C'? Have you looked in the C51 Manual?
http://www.keil.com/support/man/docs/c51/c51_le_memtypes.htm
http://www.keil.com/support/man/docs/c51/c51_le_sfrs.htm
http://www.keil.com/support/man/docs/c51/c51_le_absvarloc.htm