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INTRODUCTION TO MICROCOMPUTERS
USE OF CODES WITH MICROCOMPUTERS
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8080A Microprocessor addition address bus address lines addressing mode arithmetic binary pattern branch instructions carry flag chapter circuitry clock cycles clock pulse clock signal Code Address condition code register contents of accumulator contents of memory control register count Cycle Address Bus data at location data bus data bus lines data line decimal Decode op code delay diagram EPROM fetch flag bits goes low hexadecimal increment PC index register input instruction is executed instruction set interface device interrupt request jump latch line goes Load accumulator machine cycle main program memory chips memory location Microprocessor octal offset Oper.X Operand Order Byte output lines peripheral equipment port program counter R/W line register pair reset result is placed Rotate second byte Section shown in Figure shows stack pointer struction subroutine subroutine program Table tion transfer write zero zero page