8051 ALP to subtract two 16 bit numbers| 8051 assembly code

8051 ALP to move a block of data from internal memory to external memory
Below Code is Complied and Verified in Keil uVision 3.
The .asm file is given below after the code. For clarifications and suggestion comment in the comment section
Abhay Kagalkar
Software developer, Blogger, Learner,...