DonNews #19 26 февраля 2003

Железо

HARD - KEMPSTON MOUSE INTERFACE.

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          HARD



        KEMPSTON MOUSE INTERFACE ...

(C) Bit / XXL
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   Hello, comrades! At the moment you begin to read (out) the 
next description of the Bat a la KEMPSTON, and if your

hand involuntarily reached for something heavy, I recommend to 
browse this epic, and wasted no time to start looking for 
friends bukovok in the next article ... 


            So pristupims:


   This is an interface for a mouse with a wheel, which 
rulitsya in this issue of DonNews, but By some features of the 
shell (otmazatsya I:) is not quite cool. But because I would 
die too early, progress in kolesopodderzhke not be avoided. 
Although newspaper is vobschem something and not really 
necessary (in some filers, such as sense of

It will be much more), but it is necessary to
something to experience ...

Coordinate the wheel hanging in the upper 4 bits of port 
buttons. Consequence-> some Prog does not define this Pribluda. 
More precisely, not defined his first specimens collected by me 
for almost a year ago. During this time, My thoughts still went 
so far as to apply for the 1 st leg counter IE11 signalets

RES and get rid of this zamorochki. Text
opredelyalki mouse and joystick from Don-News19
format XAS (42sm), correctly identify the presence of Bat (at 
any position of the wheel) and taking into account the 
conflicting connection (if someone has still not reached his 
hands to connect all as it should be) buried in the appendix. 
Also in the application, you can dig up and the driver wheels, 
and a masterpiece by entitled "TestMous", created for the needs 
of checking opisuemogo miracle technology.


Scheme countable cascade of x or y (same)


      5 PI CT DO DI BD DO

a 15 CLK 0 6 2 0 0

                1 11 3 1 1
b 10 U / D February 1914 4 2 2

                3 2 5 3 3

      9 R 6 4 4

      1 S P July 7 on May 5

                             8 6 6

                             9 7 7


      5 PI CT DO OE '


     CLK 15 0 6 5 <1 0

                January 11 19o1

     10 U / D February 1914

                March 2 FEET 18.11

      9 R-BUS DATA

      1 S P 7 D0-D7


                           SIGNAL

                       SELECT X / Y PORT

                           (X / YCS)


     Decoding scheme ports KEMPSTON


       DI DC / DO
 A10 January 1 DMX 0 15 joystick port
 A8 2 on Jan. 2, 1914
 A7 3 2 March 1913

               March 1912

       'April 11 PORT SWITCH, BCS
 RD 4oE1 May 1910

     5oE2 September 6 PORT COORDINATES X, XCS

  A0 E3 6 July 7 PORT COORDINATES Y, YCS



  A5 1 OE BD

             DO 3
OIRQ 2oDI


Scheme ports and buttons, and counting stage roller


       The mouse buttons DI BD DO


                      RB 2 0 0 18 D0

                      LB 3 1 January 1917 D1

     5 PI CT DO MB 4 2 February 1916 D2

                     5 <5 3 3 15 D3
ra CLK 15 0 6 6 4 4 14 D4

               1 11 7 5 5 13 D5
rb 1910 U / D 2 14 8 6 6 12 D6

               3 2 9 7 7 11 D7

     9 R

     1 S p 7 OE '


       RESET +5 <1 0

                    BCS 19o1


 +5 V <4 OE BD
_____ DO 6 R1
RESET 5oDI



a, b-phase with optocouplers
ra, rb-same with the opto-coupler clip
address A0-A15
OIRQ-D85 / 6 (the Pentagon)
CT-(a) 561 / (1) 564 IE11 or CD4516AE/AK
BD-1533/1531AP6 or SN74ALS (F) 245
BD on one channel - 1533LP8/SN74ALS (F) 125
DC/DMX-1533/1531ID7 (SN74ALS (F) 138)
R1-10 k 4

As for LB and RB (left / right buttons):
standard of their location is unknown to me.
I like everything on the scheme, and almost all prog, which I 
use, are designed to a position of buttons. In today's software 
have the opportunity to swap the functions of the buttons or 
the auto worth (in mostly in journals). Particularly clever (?) 
May stir up the hardware buttons exchange - convenient 
(probably) STE done on rats switch on the bottom (I do not 
have). Very myshu (Genius NetScroll +) I did on

1533TL2.


   The scheme of alterations pc-shnoy Serial Mouse


                                 D1

          X Y

                               1 T o2 Xa

          v v
 \ X / 3 T o4 Xb


                               5 T o6 Ya


                               9 T o8 Yb
 \ Y /

                    WHEEL 11 T o10 Ra


  13 R v T o12 Rb

  8



      R R R R R R
 \ R / 2 3 4 5 6 7



  v +5


D1-1533 TL2
R2 ... 5 to 3.3 ohms *
R6, 7 - to 10 ohms *
R8 - 150 ohms
* It is possible that you have to pick up.
For non-1533 series TL'ki ratings rezyukov
others.


  --=*> THEORY OPTIMIZATION SCHEMES <*=- We can get rid of 
LP8'oy, if we find Corps à la 1533AP14 (SN74ALS465). Then

instead of the signal with lp'hi on id7'yu throw A5
and on the hoof 1'e buffers throw OIRQ. But
if you want to use dzhoistik, then
15'e have to knead the hoof id7 with OIRQ
or collect and Kempston instead of AP3 in the AP14.
The only problem with this whole mutyuAP14 not so easy to find. 
We have, in Rostov-on-Don, ee at radio no. Fumbling on the 
internet I ee no problems found, and is just simply ona Ciric 
(without account transfer, the price of December 10'e

2002)..
 But I want to note that the AP14 I'm not perverted, and may 
well be that they give capita as a characteristic stinking of 
smoke, as is the case with 1533AP5. With AP5 I steamed a long 
time since I was too lazy to look at power in the handbook, and 
I looked ADVENTURER 11 and a long spit, looking

on a pile of burned chips. Then collected
everything on the AP6 and spent the whole day for CV.