*            ,        .

**     pcb3m



	    ,   :      EPROM .
 
	    I2C (Intelligent Circuit) : 24CXXX, 25Cxxx, 93Cxxx  PIC-.       ,   ,     ICSP(Integrated Circuit Serial Peripheral).
  -   ,    DO0 (pin 2 LPT)  U1a(74HC04),  Q6, Q5, U1b   BUSY (pin 11 LPT).      U7, U10, U12, U13   DO0      BUSI,        .   24Cxx  PIC    Data.  , ,         .  25Cxx  93Cxx       .   \  , ,        Data2,      DOut,      BUSI     DOut,    R3   R4.     DO1   U2.2   D1, CS (Chip Select)  WP (Write Protect    24Cxx)   SELIN LPT   U4.5   S4.    ,            ,     .
 
	      :
 
	  4503 (2+4        )     LPT     .    4  U2.1-U2.4  U4.1-U4.4    LPT (DO0-DO7)     .      -\   E1 (pin1 U2 U4)  AUTOFEED (pin 14 LPT)   U4.6.   - "0"    ,   - "1" - .   U2.5  U2.6         U3 (4014).     U1E,  AUTO="1".  U4.5  U4.6         SELIN  AUTO.  SELIN   WE (write enable),    LPT pin 17  U4 pin 12,  U4 pin 11  DIP-switches (S4).
	  - 24     3 x  4015 (U6, U11, U14)     \    ,   DO1  U2.5   D.          DO1       (DO0-U1.6-CLK)      ,    24    .    CLK    "1"  "0"      0-24.    pcb3,5  D U11a  U14a      ,   DO4, DO5 LPT        ,     , ..   (  ,    Flash    ). 
	-  U3 (4014)      EPROM.   (pin P1-P8 4014)   8-    EPROM (D0.. D7).  "1"  P/S (pin 9)    CLK ( DO2   U1D) byte    .  P/S   "0"      CLK      .     Q8     D7-D0   U1F    ACK,        .    CLK   "1"  "0",      ,      .
 
	 ,     7805  7812,    .      ""     ,   J6-J8. Vpp   Strob (pin 1 LPT)   Q3  Q1. Vcc    Init (pin 16LPT)   U1C  Q2.

 
	DIP switch 12       . Vcc, Vpp  WE          Zif 32.  J1  J2            . J5        pcb3b/pcb3,5,        0,97j  0,98C-0,98D2
 
	 , , ,  ID     ,         .            ,  .  ,         -   ,   , WE, CE, OE,    .

	 Flash:
	1. SELIN - "1" (WE - "1"  ), AUTO - "1",    (E1 - "1", U2.1 - U2.4, U4.1 - U4.4 ), U2.5  U2.6 .  DO1      An,  DO0   .     CLK      Q1 .  DO1    An-1,   CLK  An   Q2,   Q1  An-1  .         A0 - An.
	2. AUTO - "0", SELIN - "1", U2.5  U2.6 , U2.1-U2.4  U4.1-U4.4 . CLK=D="1"      . S6=OE="1"-    Flash .   DO0-DO7   Byte  .
	3. AUTO - "0", U2.1-U2.4  U4.1-U4.4 ,         . SELIN = WE = "0" -   -   Flash     D0-D7      .

	 Flash:
	1.    . 
	2. SELIN - "1" (WE - "1"  ), AUTO - "1", S6=OE="0"   , DO2      4014   .   Flash        OE="0".          D0-D7 Byte .
	3.   CLK U3          D0-D7    4014.
	4. DO1=D="0"  4014    .   CLK  DO2          Q8 U3,    U1F   ACK,   .

	    ID                    ID   3 Byte' .     ID   .    EPROM     ID     9  12 .              .     Willem',   12  9    (  ,    ) ,   0000  0001    ID.    ID        , ,     BiDiPro http://www.geocities.com/pop_eco/ .	

	            ,     .    16-bit EPROM     2 Byte' ,    FWH       Byte,      .




