Apple Elite Series Computer Drive User Manual


 
ELITE SERIES USER MANUAL THEORY OF OPERATION
7.2.10. Power-On Reset
Unlike early Apple II computers, a power-on
reset circuit has been included to insure the
controller assumes the correct quiescent mode
when power is first applied. This is implement-
ed with a timer circuit that pulls the reset
line down in a “wire—or” fashion. After approxi—
mately 0.2 seconds, the reset line is released.
This circuit does not interfere with the normal
operation of the reset line.
7.2.11.Power Supply Decoupiing
All power supplies to the controller are bypass-
ed to ground on board, whether or not they are
used. This technique provides the best grounding
scheme for Apple II equipment and also reduces
noise on other bus lines.
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