Iron - Klava and rat.

Track: By me composed! Xe-xe.. :)        
Author: Macros, 14 July 2K1.             
-----------------------------------------

  Разъем клавиатур:                      

  Со  стороны  контактов 5-контактная ро-
зетка DIN имеет нумерацию:               


      U              u                   
  3       1      6   |   5               
                   o   o                 
   5     4        o     o                
      2         4         3              
                  >     <                
                   o   o                 
                  2     1                


  Контроллер  8242B  supports and inter-
PS/2-Mouse face.                    
  Purpose of the keyboard controller registers
 i8042                             
+===+--+--------------------------------+
|060|RW|Data port 8042 |
+---+--+--------------------------------+
|064|R |Status register 8042 |
|   |  |Bit 7 - parity error |
|   |  |Bit 6 - receiver timeout/ |
|   |  |        general timeout* |
|   |  |Bit 5 - transmitter timeout/ |
|   |  |        output buffer optional |
|   |  |        body interface |
|   |  |        full* |
|   |  |Bit 4 - 1=keypad locked |
|   |  |Bit 3 - 1=command, 0=data |
|   |  |Bit 2 - 0=Power ON, 1=Reset |
|   |  |        OK - status completed |
|   |  |        system reset |
|   |  |Bit 1 - 1=input buffer full, |
|   |  |        0=ready to receive |
|   |  |        command/data |
|   |  |Bit 0 - 1=output buffer full |
+---+--+--------------------------------+
|064|W |Command register 8042 |
+===+--+--------------------------------+
*The second purpose of the bit relates to
controller 8242BB, which has additional
interface for connection
PS/2-Mouse.                              

  Controller data register in download modewriting is used to issue commands from
rushing to the keyboard and actually
controller.     A sign of readiness
controller to perceive commands is
zero value of bit 1 of the status register
niya (port 064h in PC)                     

    General commands of the 8042 controller:      
+-------------------------------------+  
|DFh - enable control of line A20|  
|DDh - disable control of line A20|  
|D1h - writing to output port 8042 |  
|DOh - reading output port 8042 |  
|COh - read input port 8042 |  
|AEh - keyboard resolution |  
|ADh - keyboard prohibition |  
|ACh - read controller RAM |  
|ABh - synchronization and data test |  
|AAh - internal controller test |  
|60h - writing to the controller |  
|20h - reading the controller |  
+-------------------------------------+  

  AT keyboard control commands      

  FF - Reset - keyboard reset and test   
  FE - Resend - repeat the last transmission
  FB-FD - Set Key Types - setting auto-
   repeat individual keys              
  F7-FA - Set All Keys - operating system installation
   Keyboard auto-repeat options            
  F6 - Set Default - reset to initial   
  scanning status and resolution    
  F5- Default Disable - reset to
initial                                
  scan status and prohibition        
  F4 - Enable KB - the keyboard will respond
buy-                                     
  ACK volume and continue      
  scanning                           
  F3 - Set Typical Rate/Delay - task
- delays and code repetition rates.     
  The subsequent data byte has          
 the following format:                      
  - Bit 7=0                              
  - Bits 6-5 - delay, ms               
  00 - 250                               
  01 - 500                               
  10 - 750                               
  11 - 1000                              
  - Bits 4-0=00-1Fh - repetition speed, 
  1/s:                                   
  00h=30.0 08h=15.0 OAh=12.0 12h=6.0     
  01h=26.7 09h=13.3 Och=10.0 14h=5.0     
  02h=24.0 05h=18.5 Odh=9.2 17h=4.0      
  03h=21.8 06h=17.1 Ofh=8.0 1ah=3.0      
  04h=20.0 07h=16.0 10h=7.5 1fh=2.0      

  F2 - Read ID Code - 2-byte request
ID.                           
  EE - Echo - echo diagnostics: returns
K#EEh                                    
  ED - Set/Reset Mode Indicators - control
Keyboard indicators. I will follow-
current byte of data:                         
  - Bit 0: 1=enable Scroll Lock        
  - Bit 1: 1=enable Num Lock - Bit 2: 1=enable Caps Lock          
  AD - scan prohibition               
  AE - scanning resolution            

  From the controller data register except
scan codes, it is possible to receive answers to
commands, key release code prefix
shi (F0) or special case codes:        

  FA - ACK - confirmation of command receipt
d AA - Test OK - internal test passed 
  ED - Diag. Failure - internal error
from the test                                 
  EE - Echo Response - response to
echo command 00,FF - Buffer Error -
buffer overflow or
unidentified key             

 BUS-mouse connector                        


         1                               
         >o o<                           


        o o o o                          

        o o o                          
                9                        

+=========+=========+                    
| Contact | Signals |                    
+=========+=========+                    
|  1 |  Vcc=5V |                    
|  2 |  Xa |                    
|  3 |  Xb |                    
|  4 |  Ya |                    
|  5 |  Yb |                    
|  6 |  Lb |                    
|  7 |  Mb |                    
|  8 |  Rb |                    
|  9 |  GND |                    
+---------+---------+                    

  Active mice parcel format: 1200
bit/s, with one stop bit, without control
parity.  Microsoft Mouse (PC-mouse) is used
uses 7 bits of data, and the Mouse System
Mouse (MS-mouse) - 8 bits. The mouse sends
packet every time the state changes.
Microsoft Mouse transfers 3 bytes, and
MS-Mouse - 5 bytes (see table). Here
bits X and Y - bits of relative movement
mouse movement since the previous sending. 


Active mouse connectors:                 
+========+===========+============+      
|Signal |Contact DB9|Contact DB25|      
+========+===========+============+      
| Data |    2 |     3 |      
| GND |    5 |     7 |      
| +V |    4.7 |     4.20 |      
| -V |    3 |     9 |      
+--------+-----------+------------+ Разъем DB9P:       Разъем DB25P:        

 5                   13                  
   .   9               .  25             
     .                   .               
   .                   .                 
     .                   .               
   .                   .                 
     .                   .               
   .                   .                 
     .                   .               
   .   6               .                 
                         .               
 1                     .                 
                         .               
                       .  14             
                      1                  

 Разъем DB9S         Разъем DB25S        

 1                   1                   
   o   6               o   14            
     o                   o               
   o                   o                 
     o                   o               
   o                   o                 
     o                   o               
   o                   o                 
o                   o               
   o   9               o                 
 5                       o               
                       o                 
                         o               
                       o   25            
                     13                  


 На задней панели пц установлены следую- 
щие разъёмы:                             

  вилка DB9P         COM-порт            
розетка DB9S         Mono, CGA, EGA      
розетка DB15S(2рядн) Game, MIDI          
розетка DB15S(Зрядн) VGA/SVGA            
  вилка DB25P        COM-порт            
socket DB25S LPT                 

Microsoft Mouse package format:           
+=====+----+----+----+----+----+----+--+ 
|Bit | D6 | D5 | D4 | D3 | D2 | D1 |D0| 
+-----+----+----+----+----+----+----+--+ 
|1byte| 1 | lb | rb | y7 | y6 | x7 |x6| 
|2bytes| 0 | x5 | x4 | x3 | x2 | x1 |x0| 
|Zbyte| 0 | y5 | y4 | y3 | y2 | y1 |y0| 
+=====+----+----+----+----+----+----+--+ 

Mouse System Mouse package format         
+======+----+---+----+---+---+---+--+--+ 
|Bit |  D7| D6| D5 |D4 |D3 |D2 |D1|D0| 
+------+----+---+----+---+---+---+--+--+ 
|1byte |  1 | 0 | 0 |0 |0 |lb |mb|rb| 
|2bytes |  x7| x6| x5 |x4 |x3 |x2 |x1|x0| 
|Zbyte |  y7| y6| y5 |y4 |y3 |y2 |y1|y0| 
+------+----+---+----+---+---+---+--+--+ 
|Hbyte |  matches byte 2 | 
|Sbyte |  matches byte 3 | 
+======+---------------------------------+ 

PS/2-Mouse connector and interface is similar 
6-pin mini-DIM keyboard connector.       

 6  u  5                               
   o | o                                 
4 o o 3                             
   o o                                 
2 > < 1                              


The PS/2 interface uses unipolar
signal with TTL levels, mouse power -
unipolar, 5 V. RS-232C interface,
used in active mice, using
There is a bipolar signal with trigger levels
+3 V and -3 V and requires
bipolar mouse nutrition.                
  The PS/2 interface uses two divided
nal signal lines, one for transmission,
the other is for synchronization signals.
Serial Mouse uses asynchronous
data transmission over one line.