ARITHMETIC AND FLAGS

Microprocessors and Numbers

• Binary and Hexadecimal Numbers

• Binary- Coded Decimal Numbers     

• ASCII 

• Microprocessors and Number Conversation 

• Bit Positions

 

Flag Instructions

• - each of our microprocessors has instructions to alter the state of its flags. Which of their flags and how many of their flags can be directly altered vary.

• we use the flags primarily during arithmetic operation and for control of loops, branches and subroutines. 

• since flags are used to give us information about the outcome of arithmetic operations, we often need the set or clear flags before these math operations.