30-11-2012, 04:17 PM
8085 Assembly Language Programming
8085 Assembly.pdf (Size: 984.68 KB / Downloads: 30)
Instruction Classification
• Instruction: is a binary pattern designed inside
μp to perform a specific function.
• Instruction Set: is the entire group of instructions
• 8085 is upward compatible
Data Format
ASCII Code
7-Bit alphanumeric code
• BCD Code
4-bit binary coded decimal
• Signed Integer
D7 is used for the sign
D0-D6 represent the magnitude
00-7F positive numbers.
80-FF negative numbers.
all negative numbers are in 2’s complement