Iron - a description of the connection Kempston MOUSE (simple and small circuit).

<b>Iron</b> - a description of the connection Kempston MOUSE (simple and small circuit).

     (C) Parshukov XN0ByS Yuri / CPU


                      One piece of iron is well

                         and the other is better!


         Today we have iron!


     At this time I was entrusted to describe
description in connection Kempston MOUSE,
you say that these myhov was to @ # $! not
hair dryer, BUT! I say this scheme is slightly different from 
everyone else (which I saw) the number of elements and simple 
connection. So, read "corporate" description of the author of 
the scheme (Nikolai Volkoff). 

     I'm here and I will embed the explanation
(XNB>).


     (C) -= NGW =


  Legend of the Wild Myshe (KEMPSTON)



     One winter a sunny day caught my eye diagram of the Bat, 
this whole cool - with full decoding of the ports. But far too 
many buildings used to it, with many incomplete. And I decided 
that this mouse too ofu_la, and it needs to be a bit lower (to 
make easier and available to me details.) I found a mouse DEAD 
firm HP unwound it. My eyes appeared a picture: the two 
buildings, 4 lamps and 4, the phototransistor. And LEDs were 
powered through the current Stabilizer 12 volts. I decided if

wants 12, then so be it, and the phases
I took the bills straight from the feet of one of the buildings 
(the shaper, the second - the shear register).


     Then I started thinking about the counting stage and tore 
it from the old scheme to 561IE11, but due to the simplified 
scheme decryption of the KP chi I could not use.

A set 555AP5. As a result, I
worked as a stage, and the second safely burned because of the 
large input current 555 series.


     Digging in the references (thanks to
Company ZELTEK), I found the body SN74ALS245
- An analogue of our 1533AP6. After this
improvements counters are no longer burning. If there are any 
left punching, put more capacity on 155LP8.


     In general, the scheme has not been fully think out, we 
ought to get rid of the LP-chi, because it is one eats about 60 
mA. 

     Nothing serious in the fact that
inputs of the counters is applied somewhat more
5 volts.

-= <XNB>


     I have added to the scheme the middle button.

     Minor clarifications to the scheme from me:
cascade coordinates X and Y coordinates
absolutely identical.
 Port coordinates X - # FBDF (64479)

      coordinate Y - # FFDF (65503)

      Buttons - # FADF (64,423).


      Bit alignment port Buttons:

      76543210 Bit

      00000111

                Left button

                Right Button

                Middle button


     In the driver myhi need to provide
auto-buttons: the first pressing
button (LEFT or RIGHT) to fire, and
another cancellation.
 =



     P.S. Also bring a drawing printed
Port Card # FF under AP5 from the elements (tested - works).



   POSTSCRIPTUM FOR KEMPSTON MOUSE



     This text I have to fill
for those who - well, SBI .. generally not vezzhaet
to this board (controller rats), inserted "... ... they would 
insert it yourself ... ... Flat ...


     Anyway, sluhayte "sons":


     1. We explain how the complex is
before you:


     Yes. PENTAGON

     b. SCORPION

     at. LENINGRAD, DUET, Microsha, Irishev, corvettes, etc.

     Mr. .. x knows ...


     2. Your next steps:


     Yes. For owners PENTAGON 's signals: A0, A5, A7, A8, A10, 
RD, D0, D1, D2, D3, D4, D5, D6, D7 are taken directly from the 
respective legs of the processor. IORQ - it a separate issue - 
it can get from second leg D65 (555LL1). To lock

Kempston, use the following "trick":
from 15 feet ID7 (on the controller rat) throws provodnichok 1 
+ 19 feet on AP5 on GAMECARD, who had previously cut off from 
the board. 

-= <XNB> GAMECARD - meaning

     card installed on it AY8912

     or YAMAHA.
 =

     b. For owners of the SCORPION 's signals: A0, A5, A7, A8, 
A10, RD, D0, D1, D2, D3, D4, D5, D6, D7, IORQCE taken from the 
system connector. To block Kempston Use the following "trick": 
15 feet ID7 (on the controller rat) throws at 13 feet 
provodnichok D32 (555LI1), which pre-cut from the board.


     at. As one friend of mine:
"This is not good," find something
newer.

     Look, the point 1.


     3. As most zabatsat Bat:


     1. Remove the casing.

     2. Find any chip on the motherboard
(Its extreme feet - food).

     3. Track power to size sockets.

     4. Connect power supply (it is written
on the body, usually 12 V).

-= <XNB> Most often, in my experience, 5
 -=>


     5. Rotate the mouse wheel and look
signals at the feet of m-us.

     6. For each wheel of the two signals
Input (m-us), these signals must be
shifted by 90 degrees.

     7. Here is their something we will submit to counters rats.


     4. Tips for tuning.


     1. Tamp prog to bit-polling the port, because maybe you 
mixed up the output. 

     2. On the 155th series (LP8) hang kondyuki more.

     3. System wires should be shorter, and the Bat better 
twisted pair or shielded cable. 

     4. Counter inputs is desirable to hang
on the plus by pezyuki for 5 .. 10 ohms.

     5. CMOS (561seriya) fears of statics,
(Akuratno their foot).

     6. Button at the Bat run zero (on
land).

     7. If you have any questions:

     tel.26-61-30 (Rybinsk)

     Nicholas