





                                   MAS SLOTS
          
              There are numerous products on the market to enhance
         your junior by accessing the cartridge slots.  Unfortunately
         there are only two slots.  Both slots are identical and wired
         in parallel so they can be multiplied in a fashion similar to
         plugging a multi-outlet extension cord into a wall socket.
         Through experimentation I have found any number of additional
         slots can be added.  Problems arise when they become too far
         away and incompatible cartridges are used.  I have
         successfully tapped into the right hand slot and added seven
         additional slots.  These seem to work for setup cartridges;
         "jrvideo, jrsynchro, quicksilver", etc.  Problems appear to
         arise when application cartridges such as "Basic, Colorpaint,
         Managing Your Money" are plugged in with each other.
          
              My solution is to reserve the left hand slot for
         applications and utilize the right hand slot plus its seven
         extention slots for setup-bootup cartridges.  There are
         several ways to do this.  Basically a 36 contact card edge to
         contact the slot, a cable and the extention slots.  I
         utilized a "Keylights" cartridge soldering 36 conductor
         ribbon cable to the appropriate contacts inside with the
         cable exiting through a slit cut in the bottom.  I utilized
         the "Keylights" cartridge as the solder points are present
         and if something was going to protrude from the slot it might
         as well do something.  You can also make your own card edge
         (I did and its no fun) or purchase empty cartridges.  The
         cable then goes under junior makes a folded ninety degree
         turn to the right to the seven slots.  As I can't find 36 pin
         card edge connectors for ribbon cable, I utilized 40 pin
         connectors.  Pins 37-40 are removed and a groove is cut,
         carved or burned across the connector at pin locations 39 &
         40 to allow the right side of a cartridge to slide in, as the
         connector is wider than the cartridge.  The seven connectors
         were then affixed to a 1/8 inch plastic board to make the
         adaptor ridgid.
          
              The project takes three to four hours.  Two for assembly
         and one to two to test for continuity and shorts, and
         debugging the errors found.  The result is an empty left
         slot, "Keylights" in the right, a cable disappearing under
         junior, reappearing on the right side at a board with seven
         slots.  I originally planned putting the slots in a pretty
         case but they look nifty exposed , are easier to access and
         the cost is $10.00 less.  That's nine functioal slots
         counting the "Keylights" cartridge.  Presently I have
         "Quicksilver, Jrvideo, Jrsynchro and Basic" plugged into my
         prototype plus "Keylights" at the well head.  I must remove
         "Basic" to run other applications.
          
              If your interested but overwhelmed I'll send you
         complete instructions for $5.00; the instructions and parts
         (without the "Keylights") for $24.95; or the whole thing,












         complete, tested, "Keylights" included for $79.95 plus $4.50
         shipping.  I will also consider building it without
         "Keylights" for $64.95 plus $4.50 or modify a "Keylights" for
         $59.95 plus $4.50.
          
              Richard Schneider, POB 42147, NAS Pt. Mugu, CA 93042
          
              Questions, 805-495-7104, your dime.
          
              By the way, "Mas" means more in Spanish.


















































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