Zhelezyachki - Something about the CMOS-clock: a modified scheme of Alone Coder'a.

<b>Zhelezyachki</b> - Something about the CMOS-clock: a modified scheme of Alone Coder'a.

   Something about the CMOS-clock

(C) AlCo


           Hello, All!

  Here, at the insistence of Cyril Frolov had to make the 
scheme a signal M1, the benefit, remained the failure to 
involve an element of Lesco. And thanks to his own post that

Dallas is not too steep, is "Option 2".

  Now it is possible for the programmer a little more freely 
refer to on / off access to the clock, which can lead to the 
emergence of glitches in those who did not finalize a watch 
from you! However, leave it on the conscience of the 
programmers. 


           CMOS-clock.

    Standard Ports "GLUK".

# EFF7 bit 7 - the inclusion of access to the clock
# DFF7 - a record in the CMOS cell address
# BFF7 - read (write) data from (a) CMOS


          Option 1.



                            10 22M KR512VI1

           quartz at 32.768 kHz

                            20 February OS1 RTC

                                          3 OS2

                                  470K

                  1533LE1

   M1 February 1

          1533ID7 March 1


  1 A12 A0 DC 15

  A13 2 A1 14

  A14 3 A2 13 Jan. 11

                   12 December 13, 1917 DS

                   11

   A3 4 v1 August 10 January 10, 1914 AS
/ OIRQ 5 v2 September 9

  A15 V3 6 July 1915 R / W

                          5 1 April 1913 cE

  / WR 6

                                          4 AD0

                                          5 AD1

                                          6 AD2

                                    / 7 AD3

       9 C TT 1533TM8 D0-D7-8 AD4
RESET 1 R 9 AD5

                                         10 AD6

   D0 Q0 D1 4 2> 11 AD7

              / Q0 3>

   D7 5 D1 Q1 July 18 rES

              / Q1 June 1K bps to 20 CKF

       12 D2 Q2 1910 1K 22 PS / IRQ 19

              / Q2 11 E

       13 D3 Q3 15430 KT315 SQW 1923

              / Q3 1914 10K CKOUT 21


                          +5 V> Vdd Vss 24 12

                            KD522

               +3 V Battery>

                            D311 (D9) - using

      batteries with a voltage less than 4V, this diode must

      should be a germanium! At higher voltages

      You can put KD522.


  The signals from the legs 2 and 3 can be fed TM8
the scheme ext. graph. mode 512 * 192. Then
from the scheme can only KP11 and IR23.


  Actually shemka connection legs 18, 20,
22 bit is incorrect, but it works well. So it was with Gluck, 
and currently I have done so - was too lazy to do it right. 
(True, from Gluck's clock feed only on battery

4.5V)


  And in the good should be used as follows:


                KD522 D311
+5 V> <+3 V battery

           10K 20K
a diode 24 Vdd

   KD522 <22 PS

    4700 4700 1920 CKF

                             18 rES


  And if you plan in future to modify your favorite computer, 
so that it includes the signal clock CMOS (all software support 
is already in the firmware MADROM by AXLR), do not be lazy just 
do as necessary.



           Option 2.


  Those who could not get such as rulez
KR512VI1 and dig out of the HRC "Dallas" or
some other foreign analogues have
stay on it. Although VI1 in
such inclusion would be easy to work with;)



                            10 22M KR512VI1

           quartz at 32.768 kHz

                            20 February OS1 RTC

                                          3 OS2

                                  470K

          1533ID7 1533LL1

  / RD 1 January

                          February 3 1917 DS

  1 A12 A0 DC 15

  A13 2 A1 14 4 1

  A14 3 A2 13 May 6, 1915 R / W

                   12

                   11 1533LE1

   A3 4 v1 10 February 1 January 1914 AS
/ OIRQ 5 v2 September 3

  A15 V3 6 July 1913 cE

                          5 1 4

  / WR 6 April AD0

                                          5 AD1

                                          6 AD2

                                    / 7 AD3

       9 C TT 1533TM8 D0-D7-8 AD4
RESET 1 R 9 AD5

                                         10 AD6

   D0 Q0 D1 4 2> 11 AD7

              / Q0 3>

   D7 5 D1 Q1 July 18 rES

              / Q1 June 1K bps to 20 CKF

       12 D2 Q2 1910 1K 22 PS / IRQ 19

              / Q2 11 E

       13 D3 Q3 15430 KT315 SQW 1923

              / Q3 1914 10K CKOUT 21


                          +5 V> Vdd Vss 24 12

                            KD522

               +3 V Battery>

                            D311