But How Do It Know? by J. Clark Scott

Author:J. Clark Scott
Language: eng
Format: epub
Publisher: John C. Scott

Below is the wiring within the Control Section that does the 'fetch' part of the instruction cycle. It uses the first three steps of the stepper and is the same for all types of instructions.

The stepper's first three steps are shown here, and result in 'fetching' the next 'instruction' from RAM. Then the rest of the steps 'execute' the 'instruction.' Exactly what will be done in steps 4, 5 and 6, is determined by the contents of the instruction that was fetched. Then the stepper starts over, fetches the next instruction, and executes it.

The bottom of this diagram includes the Instruction Register. Notice that we have given numbers to the individual bits of the IR, o at the left through 7 on the right. We will be referring to the individual bits soon.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.