Crazy hands - Kempston mouse on BB55 with printed circuit board layout.

 KEMPSTON MOUSE ON BBSS     
  WITH PRINTED BOARD LAYOUT   
                                         
(C) 2001 Inside                          
-------------------------------------------------------
 Hello, readers "Black Crow"!
It's me again, INSIDE, bothering you with all sorts of things
nonsense.  But I still hope, material, because
posted below, someone might be interested in
sen (which I am sure of, by the way).           
   We are, in fact, going to talk about the old fish-
called Kempston Mouse, and even to
same on BBSS.                         
   Now someone can say, they say,
how much is possible?  - already in Deja Vu similar
There was a diagram, and in Adventurer it was on APb.
This “someone” will be partly right, but
parts and no. There were diagrams there, but it was of no use
there are not many of them. The point is that ANYONE
a ZX user could assemble this circuit, and
in those articles everything started out as if well
Well, the authors said that ZX-Format's
the scheme is too complex, they say it’s fat
det.  But in the end, their schemes are half-
Things weren't much easier.The diagram presented in this article is
can never be minimized and simplified
puppy, and most importantly - there is FIGURE
PRINTED BOARD ROUTINGS!  And this, really
agree, it was not in Deja Vu, nor in
Adventurer. So if after reading
this article you will not assemble a mouse for yourself, then
I don’t know how else to broach this topic.  
   The diagram is divided into fragments, but here
the most important thing is the decryption scheme and
port samples.  Everything else is you, I'm on-
I hope you’ve seen it more than once, but who hasn’t seen it?
cases, re-read the corresponding numbers
ZX-Format, Deja Vu and Adventurer.         








 Here, looking at these fragments and seeing
dev some diodes, some may disrupt
to fight: how can it be, we are fighting with them, bo-
we're busy, and here again - at you! I can calm down
As a matter of fact, the circuit was tested for operability
Capable at 8 MHz with CPU
1858VMZ (this is an analogue of what it costsin
KAU`yah, only cheaper). And someone wrote,
that BBSS is bad, they say they work at frequencies
above 2 MHz.  Well, first of all, it works.
read-only, secondly, CMOS, e.g.
measures, in theory, even at lower frequencies
works, thirdly, if any problems
with the advent of the mouse we will arise and be
suspicions that this is due specifically to
performance of BBSS, then you can break
data bus enable buffer on APb. Under-
Soldering it to the mouse board is not difficult, because
there are a lot of "eponymous" legs. Not yet in
this IOGE signal conditioner circuit
(blocking I/O devices). But at least
At least on the Pentagon it works without any
conflicts.                              
   The following are wiring diagrams
printed circuit board and wiring diagram. Some-
Some may be upset when they see the inscription "step
coordinate grid 1.25 mm", but not necessarily
It’s advisable to make the payment yourself - now it’s full
offices that manufacture
printed circuit boards, and some say
it's quite cheap ;)                 




























   Диоды  VD1-VDЗ - КДS22 или им подобные
Счетчики  ИЕ11  серии 561, ТЛ2 - ТТЛ сов-
местимая,  BBSS - к58OBB55a, кр18ЗЧВВ55а,
i82c55 и т.п.                            
                                         
Table 1. - signals of connectors XS1 and XS2. 
╔══════════╦════════ ═════╦══════════════╗
║ N con- ║ XS1 ║ XS2 ║
║ bar ║ ║ ║
╠══════════╬════════ ═════╬══════════════╣
* * * *
* 1 * D0 * VCC ( +5V ) *
*2*D1*GND*
*3*D2*A10*
* 4 * D3 * RD/ *
*5*D4*A8*
*6*D5*A6*
*7*D6*A5*
* 8 * D7 * IORQ/ *
* * * *
*****************************************
                                         
   The address space is specified within the limits
lah A0-A15.                              
                                         
   Table 2. - DB-9 connector signals.    
*****************************************
* * *
* 1 * VCC ( +5V ) *
* 2 * LB - left button *
* 3 * H1 - Horizontal count *
* 4 * V2 - vertical direction *
* 5 * GND ( common ) *
* 6 * MV -middle button *
* 7 * RB - right button *
* 8 * H2 - Horizontal direct. *
* 9 * V1 - vertical count *
* * *
*****************************************
                                         
    Recommendations for assembly and adjustment.    
                                         
   It is better to solder the socket for BBSS after
how to solder the 561IE11 counters and ensure
Check their performance, because... you-
soldering a non-working IE11 from under the socket
not easy.  You'll have to solder a jumper
on BBSS, because  from unconnected pins
BBSS reads "0" rather than "1" as with
TTL microcircuits.  And the standard if
it is appropriate to talk about this, suggests
reading the word "#FF" from the #FADF buttons port
when the buttons are not pressed.                   
   You may still have to prop up the entrance -
nal amplifiers (TL2) with resistors or
+5V, or to ground if there is no special
desire to greatly mock RS-232 we-
neck.  For example, I have a three-button GE-
NIUS MOUSE, and just a few improvements - to
button set to GND instead of +5V (well, in the sense
-5V instead of GND, from the point of view of RS-232,
of course), and the wires of the new mouse
soldered the tail onto the GENIUS chip...
Then it was necessary to prop up the resistor
rami 240 kOhm at +5V and a littlebend
one LED on an optocoupler, because was weak
be a signal. And of course the disadvantage is
whose circuit design (lack of amplifier
lei in the mouse) is poor noise immunity -
responsiveness: pressing the buttons is possible
interference (false counter alarms).
So, if you’re not lazy and don’t feel sorry for IBM’s-
who cares, it’s better to do everything as
advised in ZX-Format.                
 Fighters for reducing energy consumption
I can recommend using 58OBB55A instead
analogue of KR18ZCHVV55A, and instead of TTL micro-
circuit to use new CMOS analogues -
74ACxxx, 74ACTxxx or our analogue series
1554, 1594, etc. These series are better
performance and power consumption,
compared to series 1533. The only one
The downside is the price. These series can be recommended
be used as bus forming
lei, because microcircuits of these series can
"pump" significant capacities.      
   DB-9 connector directly to board
It’s better not to solder it, but to wire it to
false body panel.                     
                                         
                  -----                  
                                         
   If anyone has the wiring of this printed
boards will be typed in R-CAD or ACCEL EDA,
If it’s not difficult, send it to the editor’s address:
tions of the log corresponding files, please
luysta. And it would be really nice
if only someone could sort this whole thing out
under NEMO-BUS (ZX-BUS) or under ISA-8.     
                                         
   Schematic and layout of the printed circuit board published
rejoiced with permission from the authors:           
                                         
       Evil Genius & Co        
                                         
Р.S. If you want your discs not to be cleaned,
If you're on IBM, listen to the following diagram.
In essence, this is the VG93 turbocharger scheme,
but she also has the above-mentioned special
very undesirable for anyone
telny (as for example for me), but maybe
for those who are engaged in protecting their
software products will be useful. B
in general, frequencies 1 MHz/2 MHz going to VG93,
switched by WRG signal (record) c
drive connector. As a result you will get
two effects:                             
v  faster stepper movement
engine and reduction of acoustic noise
from this very engine;               
v discs will not be readable on IBM,
It’s not that AMD-Copier won’t take it there, but also
not even any version of the FDA will be able to copy
be like thisdisk.                         
   IBM disks will be readable. And the disks
recorded on your Spectrum will be
play on any other Spectrum; true
write to a disc formatted in
FDC with such a VG93 turbocharger scheme, on
machines without this scheme is impossible - "they will beat-
Xia" sector.                             
                                         
                  -----                  
                                         
   When creating this article it was used
the following:                               
                                         
SOFT:                                    
- graphic editor BGE 2.40c         
- IS-DOS tech editor                     
HARD:                                    
- photocopy of the printed circuit board              
 (P) Evil-Genius & Co                    
Electronic media:                         
- ZX-Format #???                         
- Deja Vu #0A                            
-Adventurer #11                         
                                         
                  ----- WIRING TO SOUND DRIVE    
                                         
(C) 2000 PunisHer/VooDoo People          
-------------------------------------------------------
 Here I want to show the printing layout
no board for a sound device under
modest name -SounDrive 1.51+. Sa-
I won’t give him the diagram, because... everyone has it
there should be one, but if not, then get it
very easy.  I want to warn you right away -
to reduce the size of the board, I had to
install resistors - "hang-
com", above the microcircuits. Don't be afraid - in
of this design the board has a small
height - approximately 18-20 mm, width 55 mm
and 60 mm length.