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--  How to modify the 16k Ram Board  --
             By: Axe Man 
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WRITE PROTECT:
    LIFT PIN #3 FROM U18 CHIP & CONNECT
    TO ONE SIDE OF SWITCH.
    CONNECT SOCKET AND PIN #13 74LS175
    TO CENTER OF SWITCH
    CONNECT TOP OF R3 TO OTHER SIDE OF
    THE SWITCH

R3---------------------O
                       !
                       /  NORMAL OPEN
                       !
PIN #13----------------O
74LS175                !
                       /  NORMAL CLOSED
                       !
PIN #3-----------------0
U18

CHANGES FOR RAM & ROM
    LIFT PIN #3 FROM U14 CHIP & CONNECT
    TO ONE SIDE OF SWITCH
    CONNECT SOCKET AND PIN #5 74LS175
    TO CENTER OF SWITCH
    CONNECT GROUND TO OTHER SIDE

GROUND-----------------O
                       !
                       /  NORMAL OPEN
                       !
PIN #5-----------------O
74LS175                !
                       /  NORMAL CLOSED
                       !
PIN #3-----------------O
U14

* * * * * * * W A R N I N G * * * * * *
THIS IS DONE AT YOUR OWN RISK
IT WILL VOID YOUR GUARANTEE
WE ASSUME NO RESPONSIBILITY FOR RESULTS
* * * * * * * W A R N I N G * * * * * *

IT SEEMS THERE'S A DEMAND FOR A W/P
SWITCH ON THE ANDROMEDA -- SO HERE IT
IS ...
 
 LOCATED ON THE ANDROMEDA RAM CARD IS
 A PIN NUMBER 25 WHICH HAPPENS TO BE 
 THE POWER (+5V) PIN. IF THIS PIN IS
 FOLLOWED ONTO THE PC BOARD, THERE WILL
 BE TWO RESISTORS (SMALL TUBE-LIKE 
THINGS WITH COLOR BANDS AND ONE LEAD
OUT OF EACH END). AT ONE END THE POWER
WILL GO INTO THIS RESISTOR, AT THE OTHE
R ANOTHER TRACE WILL GO OFF TO SOME
OF THE OTHER ELECTRONICS ON THE BOARD.
WE WANT TO USE THE END THAT HAS THE
TRACES GOING TO OTHER CHIPS ON THE 
BOARD. (CALL THIS POINT #1 (USE EITHER
RESISTOR - THERE ARE TWO)). POINT NUMBE
R TWO IS WHERE PIN 18 FROM THE APPLE
CONNECTOR (7 PINS DOWN FROM 25 ON THE
SAME SIDE) ENTERS ONTO THE PC BOARD
AND IMMEDIATELY GOES THROUGH TO THE
OTHER SIDE (AFTER ABT 1/2 "). THIS
IS POINT #2.  IF YOU TRACE WHERE TH
E THING COMES OUT ON THE OTHER SIDE, 
YOU'LL FIND OUT THAT IT POPS BACK ON
THE SIDE IT STARTED FROM ABOUT 1/2" 
LATER... THIS LITTLE LINK IS WHEERE WE
CUT THE TRACE TO INSERT THE SWITCH.
OK, WE CUT THE TRACE BETWEEN THE TWO
POINTS THAT IT GOES THROUGH THE PC
BOARD. LABEL THE OTHER PLACE WHERE THE
TRACE GOES THROUGH POINT#3.  NOW WE
WILL ATTACH AN SPDT SWITCH TO THE BOARD
 SOLDER ONE WIRE TO POINT 3, AND ATTACH
IT TO THE CENTER TERMINAL OF THE SWITCH
THEN SOLDER A WIRE TO POINT 1 AND 
ATTACH IT TO EITHER SIDE OF THE CENTER
SWITCH. LASTLY, TAKE A WIRE AND SOLDER
IT TO POINT 2 AND THEN TO THE UNUSED
PIN ON THE SWITCH. THERE YOU HAVE IT!
WHEN THE SWITCH HANDLE IS ON THE SAME
SIDE AS THE WIRE FROM POINT #1, REG-
ULAR OPERATION WILL TAKE PLACE. IF THE
SWITCH IS THROWN IN THE OTHER DIRECTION
THE CARD WILL BE WRITE PROTECTED.
(*PLEASE NOTE THAT THIS MODIFICATION
 WILL VOID YOUR WARRANTY AND THAT THE
USER ASSUMES AND WILL BE RESPONSIBLE
FOR ALL RISKS AND DAMAGES INCURRED IN
THE MAKING OR THE USE OF THIS MOD-
IFICATION, AND THAT THIS MODIFICATION
IS NOT GUARANTEED TO BE SUITABLE FOR
ANY PARTICULAR PURPOSE*)
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