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Testing an Unresponsive Computer
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Additionally address bus address decoder ASCII ASCII character assembly language bit pattern bootstrap loader Centronics chip Clock connected control program control register copper track counter CRT controller current tracer data bus data link data switches devices diskette Display RAM dot matrix dynamic RAM EPROM example fault fetch-execute cycle floppy disk handshaking bits hardware hexadecimal in-circuit emulator Initialise input port input/output input/output addresses instruction interconnecting interface interrupt item of test logic analyser logic probe machine code main program memory address memory and input/output memory location memory map microcomputer microprocessor modules monitor normally opcode operating system output PIO port printer pulse pushbutton Read read/write remote computer RESET sector serial shown in figure signature analyser Speech Synthesiser stepper motor STRUCTURE BEGIN Subroutine test equipment test program transfer typically UART voltage waveform