                      ######### ADAPTER ########

  In order to use ASIM you must build the adapter described below,
  you will only require some basic electronics experience.

  You can find PCB design for this board in the original ASIM by the
  ANDROID in the site you found this file.

  You can produce your card adapter by making a PCB with contact areas
  or use an empty phone card, which also has ISO contacts, removing the
  integrated chip from the non-contact side  and use a conductive ink
  to draw connections to the end of the card were you connect wires.

  The following diagram describes the whole interface.
  This easy level adapter with only 3 transistors was worked in almost all
  PC's i have tested.
  If you experiment any problem you can use instead a MAX232 level converter
  and two transistors as see below.

                                            Ŀ
  C1	VCC	Supply voltage +5 V            C1                C5   
  C2	RST	Reset (active low)                                    
  C3	CLK	Clock                       \          /Ĵ
  C4	RFU     NOT USED                       C2           C6   
  C5	GND	Ground                                               
  C6	VPP	TIRED EVER TO +5V           Ĵ         Ĵ
  C7	I/O	DATA INPUT OUTPUT              C3               C7   
  C8    RFU     NOT USDED                                   
                                            /          \Ĵ
                                              C4                 C8   
                                                                      
                                            

  RS232 DB9                    VCC
                       
                              Ŀ
  PCGND (5)  GND        4k 
                               7 
                              
                                 ISO C7 I/O PIN (7)
                               /c        
                  Ŀ   /           
   TXD (3) Ĵ 10k Ĵ\  BC547    
                    b  \e        
                                        
                               GND       
                                         
                VCC                      
                                        
               Ŀ                     
               4k                      
                7                      
                                    
    RXD (2) Ĵc                      
                  \                      
                    \ b Ŀ         
              BC547  /Ĵ 10k 
                   /    
                  e
                GND


                VCC
                 
               Ŀ
               4k                       ISO C2 RESET PIN (2)
                7                      
                                    
    DTR (6) Ĵc                      
                  \                      
                    \ b Ŀ         
              BC547  /Ĵ 10k 
                   /    
                  e
                GND


         INTERFACE WITH A MAX232 AND TWO TRANSISTORS:

  The four condensators must be 10 uf electrolitic or tantalium type.
  Note that the condensators have polarity.
  VCC must be conected to the card Vcc pin (ISO C1).
  GND must be conecter to the card GND pin (ISO C5) and the PC serial COM GND
  (pin 5 in a DB9 conector).

              Ŀ
  +-----------1          16-------o VCC
 +|          +             
 === VCC o-||-2          15-------o GND (CARD & RS-232)
  |                        
  +-----------3          14-------o DTR (6 RS232)
           +     MAX232    
     +---||---4          13-- NC
     |                     
     +--------5          12-- NC
          +                
     GND o-||-6          11-------o RESET  (ISO C2)        I/O  (ISO C7)
                                                            
 (2) RXD o----7          10Ĵ          VCC
                                                                     Ŀ
 (3) TXD o----8           9Ŀ              VCC                 4k 
                                                       7 
                                                 Ŀ                
                                                 4k        Ĵ
                                                  7                   /c
                                                      Ŀ   /
                                                   Ĵ 10k Ĵ\  BC547
                                                  /c         b  \e
                                     Ŀ   /                        
                                    Ĵ 10k Ĵ\  BC547                GND
                                        b  \e
                                                    
                                                   GND

