How to use DPTR register in C program | Microcontroller › 8051 › How to use DPTR register in C program This topic has 1 reply, 2 voices, and was last updated 12 years, 7 months ago by Mehtab Ali. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts March 4, 2012 at 11:56 am #1608 amardeepParticipant i want use DPTR 16-bit register in c programming .. plz guide me March 4, 2012 at 12:41 pm #7238 Mehtab AliParticipant in c program we use XBYTE[address] command to access external memory location. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In