Iron - On connecting AY MOUSE.

   IN DEFENCE OF THE POOR MOUSE.


                 (C) V.M.G.
________________________________


              "Guys, let's

                  live in harmony! "

                      Leopold.


  Epigraph requires some explanation. In recent years, among
authors of the journal "ZX FORMAT"
and other computer publications
came into vogue style-type:
 "My thoughts - a gift to the uninitiated,
any dissent - nonsense. "
 Will not evaluate the first part of
this idea - it is safe for
others, and here is the second ...

   Guys, ladies and gentlemen, boys!
 Let us leave the racket at the bedside
seriously ill. Let everyone in the
Because of their ability helps
SPECCY survive, while the other structurally related to such 
attempts. 

  I confess, I'm pretty long been skeptical about the need to 
expand the computer's RAM to  512K and has not published the 
relevant scheme. But the process is went well, without asking my

views - are now on the East
Ukraine is probably more "Pentagon" with 512K than to 128K.
Scheme itself expandable memory up to
512K - a massive popular
creativity. It only remained to
systematize "folklore"
make and publish.

  The same applies to the AY-MOUSE.
Is it possible now to trace who
first began experimenting with connecting the then popular 
"korvetovskoy the mouse to SPECCY? - No! This "mouse" bore no 
mountain Brain in someone's forehead with a mighty and 
unpretentious fantasy yuzersky "grassroots." And it is 
illegitimate child is, for some reason, some elephant circuitry 
panic instead of a condescending smile. 

    Calm down, everything will be fine! If you use
KEMPSTON MOUSE, no one, believe me, is not going to rush in
into your house and forcing you to immediately obkarnat it to 
the size of AY; met string "AY-MOUSE" a menu, the specialist 
may convert existing driver from your favorite mouse,

and the others can not pay for
this line of attention.
 I myself - a former employee of the system
State Standard - I think that one
old standard of a new better one. Each month, irrevocably
decide to connect KEMPSTON MOUSE,
but when I see this pile of parts and
torn the system bus of the computer, then such a desire
gradually taking place.
 And then look unwittingly stops on the corner terrified 
zabivsheysya AY-MOUSE, I once brought home, warmed and

connected to SPECCY for 5 minutes. AND
All Circuits safely placed in her body.
 Why did with gusto worthy of a better, waving
on the poor mouse? I know about the shortcomings of AY-MOUSE, 
more than any of her critics. The most fatal of them - a small 
"memory" (4 +4 bits). Ie If the mechanism

Your mouse gives a fairly high number of pulses per centimeter
movement, and her boss more impulsive, the perpolnenie
mice occurs earlier than
the next interrupt (with its consequences).

   If there is any goodwill
trouble remedied. Counters can be downloaded AYMOUSE number
"8" on a signal from the computer.
Therefore it is possible to install meters at the beginning of 
any long and regular procedures and take

them after graduation. Difference,
of course, proportional
movement of the mouse.

   The author did not set out
purpose of advertising AY-MOUSE,
as it has with this commercial benefit. Purpose of the article -
familiarizing users
and programmers with a
relatively long-standing
"Widgets" on SPECCY. Think and
you decide for yourself. And if you thought
and the decision of the author, suddenly, did not coincide with 
yours, do not rush indignantly to grab a pen -

simply click on one known
you button on a computer ...

 For those who are still with us, bring the scheme and a brief 
description AY-MOUSE.


   If suddenly you have a bedside table
long is the mouse from the PC "CORVETTE"
then you are lucky - connect it
port 'A' musical coprocessor and work! If y
You do not just such a "mouse", then
you lucky twice - first,
"Korvetovskaya" mouse collected on
mikruhah and eerie clicks, and, secondly, you can customize
any mouse in the AY-mouse on the proposed scheme. After careful
evisceration, all details can be
place in the body of the mouse.

    Signals are used directly with 4-opto-couplers: two
mounted on wheels which is responsible for vertical movement 
(marked as VER1, VER2), and two mounted on wheels

horizontal movement
(HOR1, HOR2).



SETTING. Get the appearance of
stable periodic signals at the outputs 2,4,6,8 chips D1 when 
moving the mouse. To do this, you may have

pull up the corresponding inputs
TL2 resistor to +5 V or ground. " It is also possible a more 
precise matching capacity and resistor on

output D1.6. Some of the mouse
give an increased number of pulses per inch of movement: from
this will have to accept, although
Poster cases are known as taping the "extra" holes
and installation of the frequency divider
in TM2.

      PROGRAMMING.
 First, configure port 'A' on
command output: OUT 65533,7

  OUT 49149,255: OUT 65533,14
(I wonder what it will
it can run on input). When
write to the port number 49149 112
multiplexer switches D6
to counter the vertical displacements of D3 (bits 0 ... 3), 
while records in the same port number 48 -

to counter horizontal displacements D4 and, simultaneously,
through an element of D1.6 and RC-chain
set the initial value of '8 'on both counters. Bits 4 and 5 
indicate the state buttons (pressed - '0 '). Bit 7

used for testing
computer and create effects
type MULTICOLOR.


             . . .


  The annex to this number
there is a program "ARTMOUSE" -
this is "ART STUDIO", adapted by COBRA under the AY-MOUSE
(With other manipulators are not
works).
________________________________



      IN DEFENCE OF THE POOR MOUSE.

(C) V.M.G.
-------------------------------
 "Guys, let's live together!"

                       Leopold.


  Epigraph requires some explanation. In recent years, among
authors of the journal "ZX FORMAT" and
other computer publications came into vogue style-type:
 "My thoughts - a gift to the uninitiated,
any dissent - nonsense. "
 Will not evaluate the first part of
this idea - it is safe for
others, and here is the second ...