BCD arithmetic and 16-bit data operations

BCD arithmetic and 16-bit data operations

• 1.
  BCD ARITHMETIC AND16-BIT DATA OPERATIONS DHANANJAYSINH JHALA 170410107027 TY CE-1, BATCH B MICROPROCESSOR AND INTERFACING ALA
• 2.
  BCD ADDITION The additionof two BCD numbers in 8085 may not represent an appropriate BCD value. This is because the microprocessor cannot recognize BCD numbers. In BCD addition, any number larger than 9 is invalid and we need to adjust that by adding 6 in binary.  A special instruction called decimal adjust accumulator(DAA) performs the function of adjusting a BCD sum.
• 4.
  PACKED AND UNPACKEDBCD
• 5.
  ADDITION OF UNSIGNEDBCD NUMBERS Problem statement: A set of 10 packed BCD numbers is stored in the memory location starting at XX50H.
• 9.
  SUBTRACTION OF PACKEDBCD NUMBERS
• 10.
  16-BIT DATA OPERATIONS