Hello Mr. Subair!

If you really want to add a Floppy Drive Interface to your 8051 System
I have a possible Solution. I´ve once had a ATARI ST Computer. The
ATARI ST Computer uses to have the WD1772 Floppy Controller from
Western Digital. It´s available in two versions .. 8 Mhz (720 kb) and
16 Mhz (1.44 Mb) with the WD1772/2. This maybee could be a solution
for you. Simlpy search the Web for ATARI ST Schematics.

Best regards

Stefan