						File:	DR11VC.TXT


Principe schema:
================


	PDP11/34				LSI11/23
	--------				--------
		    (Reseive)
 ----------\	      (LED)   			   /----------
	   !		!     _ /-------\	   !
	   !Req.B	!     Q !	! Q   Req.A!
	   !<-------------------! Flip-	!--------->!
	   !			! Flop	!	   !
	   !Data      /-----\ S	!	! R   Data !
  DR11C	   !--------->!     !-->!	!<---------!    DR11V
	   !transmit  ! OR  !	\-------/     ready!
   J2	   !	      !     !			   !     J1
	   !--------->!     !<---------------------!
  Input	   !Init      \-----/		       Init!    Output
	   !					   !
	   !<--------------------------------------!
	   !<              16 * data		   !
	   !<--------------------------------------!
	   !					   !
 ----------/					   \----------




	PDP11/34				LSI11/23
	--------				--------
				     (Send)
 ----------\		       	      (LED)	   /----------
	   !          /-------\ _	!	   !	
	   !Req.A   Q !	      ! Q       !     Req.B!
	   !<---------! Flip- !------------------->!
	   !	      ! Flop  !			   !
	   !Data    R !	      ! S /-----\     Data !
  DR11C    !--------->!	      !<--!     !<---------!    DR11V
	   !ready     \-------/	  ! OR  !  transmit!
   J1	   !			  !     !	   !     J2
	   !--------------------->!     !<---------!
  Output   !Init		  \-----/      Init!    Input
	   !					   !
	   !-------------------------------------->!
	   !              16 * data		  >!
	   !-------------------------------------->!
	   !					   !
 ----------/					   \----------



Functie Flip-Flop:
==================					(Set-->Q^)

	Request A: Hoog; Klaar		Request B: Hoog; Lezen

		   Laag; Wacht			   Laag; Klaar




		Bergconnector aansluiting aan flat calble.
		==========================================




		Connector		Flat cable
		 Female
		/-------\
		!	!----------------------------------
		!	!  40e = VV (Bovenste rij op con.)
		!	!    .
		!	!    .
		!	!    .
	Nokje	!----	!    .
	boven	!   !	!    .
		!----	!    .
		!	!    .
		!	!    .
		!	!    .
		!	!   1e = A (Onderste rij op con.)
		!	!-------------------------
		\-------/






				Connector
				  Male

	2	    10  	   20		  30    	 40
	.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .

	.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .
	1	    9    	   19		  29		 39


		     (Van uit de flat calble gezien!)


		Connectorverbinding DR11C en DR11V.
		===================================

    Con. J1, output DR11-C en V    Con. J2, input DR11-C en V
    ---------------------------    --------------------------


   	Pin	  Functie	       Functie	     Pin

	 1	     -			  -	      1
	 2	     -			  -	      2
	 3	   OUT00 <------------> IN00	     38
	 4	     -			  -	      4
	 5	     -			  -	      5
	 6	     -			  -	      6
	 7	     -
	 8	    Gnd			 Gnd	      8
	 9	   OUT01 <------------> IN01	     32
	10	   OUT04 <------------> IN04	     31
	11	     -
	12	   OUT05 <------------> IN05	     29
	13	   INIT
	14	   OUT06 <------------> IN06	     27
	15				Req.B  	     15
	16	   OUT07 <------------> IN07	     25
	17	   OUT03 <------------> IN03	     24
	18	     -
	19	   OUT08 <------------> IN08	     22
	20	   OUT09 <------------> IN09	     21
	21	     -
	22	   OUT10 <------------> IN10	     19
	23	   OUT11 <------------> IN11	     18
	24	   OUT12 <------------> IN12	     17
	25	     -
	26	     -			  -	     26
	27	     -
	28	   OUT13 <------------> IN13	     13
	29	   OUT14 <------------> IN14	     12
	30	   OUT15 <------------> IN15	     11
	31	     -
	32	   Req.A
	33	    Gnd			 Gnd	     33
	34	   OUT02 <------------> IN02	      7
	35	    Gnd			 Gnd	     35
	36				INIT	     36
	37	    Gnd			 Gnd	     37
	38	     -
	39	    Gnd			 Gnd	     39
	40	 data ready		  -	     40


		    Opbouw van de Flip-Flop.
		    ========================




						    Vcc
		  /----\			     !
  init 11C J1    1!    !			   13!Clr.
  --------------->!    !			   /----\
		  ! OR !     /----\		  1!    !3  Req.A 11V J1
  init 11V J1    2!    !3   4!    !  /------------>!J  Q!--------------->
  --------------->!    !---->!    !  !		   !    !
		  \----/     ! OR !  !  /----\	   !    !
  data transmitted 11C J2   5!    !6 ! 9!    !	   !    !
  -------------------------->!    !---->!    !8  12!Clk.!
			     \----/     ! OR !---->!----! (J-K Flip Flop)
  data ready 11V J1		      10!    !	   !    !
  ------------------------------------->!    !     !	!
				     !  \----/     !	!
				     !		  4!   _!2  Req.B 11C J2
				     \------------>!K  Q!--------------->
						   !	!         en LED
						   \----/	(reseive)


		!______________________________! !________!
			  IC-1, SN7432		    IC-3,
						   SN74107



						    Vcc
		  /----\			     !
  init 11C J2    1!    !			   10!Clr.
  --------------->!    !			   /----\
		  ! OR !     /----\		  8!    !5  Req.A 11C J1
  init 11V J2    2!    !3   4!    !  /------------>!J  Q!--------------->
  --------------->!    !---->!    !  !		   !    !
		  \----/     ! OR !  !  /----\	   !    !
  data transmitted 11V J2   5!    !6 ! 9!    !	   !    !
  -------------------------->!    !---->!    !8   9!Clk.!
			     \----/     ! OR !---->!----! (J-K Flip Flop)
  data ready 11C J1		      10!    !	   !    !
  ------------------------------------->!    !     !	!
				     !  \----/     !	!
				     !		 11!   _!6  Req.B 11V J2
				     \------------>!K  Q!--------------->
						   !	!         en LED
						   \----/	  (send)


		!______________________________! !________!
			  IC-2, SN7432		    IC-3,
						   SN74107



			Led driver IC-4, SN7416.
			========================

				/------\
		Req.B 11C J2   1!      !2  Led (Reseive)
		--------------->!      !---------------->
				!      !
				!      !
		Req.B 11V J2   3!      !4     Led (Send)
		--------------->!      !---------------->
				!      !
				\------/

		

	Stroomschema:
	-------------

		+5 Volt (Rood)
		-------------------------
			!		!
			!		!
		      _____	      _____
		      \   / Send      \   / Reseive
		       \ /  (Rood)     \ /  (Geel)
		      -----	      -----
			!		!
			! (Geel)	! (Groen)
			!		!
		       ---	       ---
		       ! !	       ! !
		       ! ! R	       ! ! R
		       ! !	       ! !
		       ---	       ---
			!		!
			!		!
		      	/		/
	       11V J2 !/       11C J2 !/
	       -------!	       -------!
		      !\	      !\
			\ e		\ e
			!		!
			!		!
		-------------------------
		Ground (Zwart)

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