8085 instruction set 8085 timing diagrams 8085 opcode fetch ,read and write timing digrams 8085 programs excerceise on 8085programs 8085 time dealys exercise on 8085 time dealys 8085 stack conepts 8085 subroutine(CALL instruction) 8085 subroutine(RET instruction) 8085 interrupts and service routine 8085 SIM,RIM,Interrupt hardware structure and code conversions 8255 introduction ,Architecture and PIN description 8255 operationg modes Exercise on 8255 study card using modes 8251 introduction 8251 Architecture and pin descrption 8251 command words with examples 8251 Controlwords 8253 introduction ,Architecture and PIN description 8253 operating modes 8253 command words with examples 8086 Introduction and Architecture 8086 pin description 8086 physical memory segmentation 8086 instruction set 8086 interrupts and exercise problems