The Intel 82C55 Programmable Peripheral Interface chip is de

The Intel 82C55 Programmable Peripheral Interface chip is designed to be connected to a microprocessor as a memory mapped I/O device which provides 3 additional 8-bit GPIO ports for connecting to external devices. The ports are referred to as PA, PB, and PC in the data sheet. (See 8255 data sheets for details.) Use ABSOLUTE decoding with no fold-back for the external DATA memory. Show your work and include the following items: MEMORY MAP MEMORY ADDRESS TABLE BOOLEAN EQUATIONS for each chip select signal Full schematic logic diagram of your DECODING CIRCUITS

Solution

USE A) mEMORY MAP

B) MEMORY MAP TABLES

USING MEMORY MAP WE MAP EXACT MACHING FOR MEMORY TO BE INSERTED

USING MEMORY MAP TABLES WE CAN IDENTIFY EXACT TABLE TO MACH FOR MEM STORE