80x86 Instruction Encoding Machine Language 8086 Instructions •Like other attributes of x86 processors, the machines through x86-64 are backwardly compatible with the 8086 •We will look at 8086 encoding in detail •Extension to Pentium instruction is straightforward Encoding of 8086 Instructions •8086 instructions are encoded as binary

This is an HTML-ized version of the opcode map for the 8086 processor. It is based on the opcode map from Appendix A of Volume 2 of the Intel Architecture Software Developer's Manual.A plain-text version - easily parsable by software - is also available.. This map was constructed by taking a map for a more recent x86 processor and removing information irrelevant to the (much earlier) 8086 8086 Microprocessor is an enhanced version of 8085Microprocessor that was designed by Intel in 1976. It is a 16-bit Microprocessor having 20 address lines and16 data lines that provides up to 1MB storage. It consists of powerful instruction set, which provides operations like multiplication and RCL memory, immediate REG, immediate memory, CL REG, CL: Rotate operand1 left through Carry Flag. The number of rotates is set by operand2. When immediate is greater then 1, assembler generates several RCL xx, 1 instructions because 8086 has machine code only for this instruction (the same principle works for all other shift/rotate instructions). LEGO Droid Tri-Fighter Set 8086 Instructions Viewer. If you've lost your original instructions, or just want to try building something new, these are the full building instructions for the LEGO Droid Tri-Fighter Set 8086 Logical instructions are the instructions which perform basic logical operations such as AND, OR, etc. In 8086 microprocessor, the destination operand need not be the accumulator. ECS 50 8086 Instruction Set Opcodes . Operation Operands Opcode. ADC see ADD ADD opcode + $10, and xx010xxx (ModR/M byte) for $80-$83 ADD r/m8, reg8 $00 ADD r/m16, reg16 $01 ADD reg8, r/m8 $02 ADD reg16, r/m1