Caple C871i Bedienungsanleitung PDF herunterladen (Seite 269)

100

101

Apple II Computer Info

ShRegistr PPPPPPPLHPPPPPPH

IOU LLPPPHLLPLLHHPHOPPPPPPPPPPPHPPLLPPPPHPPP

LS10 PPPHHPLHLHHHPH

Dec/Demux PPPPPPHLHHHHHHPH

All RAMs HPPPPPPHPPPPPPPL

CD ROM HPPPPPPPPPPPPLPPPPPLPPPPPHHL

S202 LHLPPLLPPPHPLH

EF ROM HPPPPPPPPPPPPLPPPPPLPHPPPHHH

LS154 PHHHHHHHHHHLHHHHHPPPPPPH

Keybd ROM LLLHLLHHPPPLPPPPHLLPHLHH

-------- --

LS251 OLLHPOHLPPPHHHHH

RC741 PLLPPPHO

NE558 HOHHHHOHHOHLHHOH

Decoder PPPLLLLHLLLHHHLLLLLLLLLLLLLHHHLPPPPPPPPP

---------

P = Pulse

H = High

L = Low

O = No Light

Pins 1-8 & 22 & 23 on the Keyboard ROM as well as pins 6-14 on the

Decoder are readings made after "space bar" pressed.

+ These readings are taken under normal stand-by conditions.

That's all there is to it! Please do not ask what the chips themselves

do - refer to the Apple //e Technical Reference Manual, in the Hardware

Implementation section.

- Tony :-)

** This list was obtained from p.232 of "Troubleshooting and Repairing

Personal Computers 2nd Edition" by Art Margolis published by

Windcrest/McGraw Hill. ISBN 0-8306-2187-3. **

<<<<< DISCLAIMER: This post is for reference only - I will not be held

responsible for any damages or personal injury as the result of the use,

misuse, or otherwise of the information contained herein. The above

procedures should only be performed by a qualified technician, or Apple

authorized representative. >>>>>

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### logic.chart

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Apple II Computer Technical Information : Apple II Family Hardware Info

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