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DIGITAL SYSTEM CONCEPTS
BASIC MICROPROCESSOR SYSTEM
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AAAAAA Meaning Access ACIA addressing mode Addressing Number affected Table 3.1 arithmetic binary numbers bit is cleared bit is set bits affected Table bits not affected breakpoint chip select clock code bits affected Condition code bits Condition Code Register connections Control Register data bus data word device display EPROM ERROR example flag flip-flop flowchart hardware hexadecimal implemented Index Register initialisation instruction integrated circuit interface interrupt request interrupt routine interrupt vector JMP EXT LDAA IMM loaded logic machine-cycles memory bytes main program Memory address Memory address Content memory bytes INH memory-map microprocessor microprocessor system mode machine-cycles memory Number of Number Number of Op-code Offset one's complement Op-code mode machine-cycles operation otherwise cleared output parity Peripheral Data Register program counter reset result Section selected accumulator shown in Fig sign bit signal significant bit specified memory location STAA EXT stack pointer stored subroutine subtraction symbol tri-state two's complement zero