Geoeso - KEMPSTON joystick for Pentagon 128.

                                          
                                          
 METALLURGY                
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(C) ZEVS                                 
                                         
                                         
     For owners of PENTAGON-128-1 we offer
I'm thinking of the KEMPSTON JOYSTICK scheme, which is otcy-
appears on the board. There are some
programs that have support from KEM-
PSTON JOYSTICK & MOUSE. With simultaneous
When polling these devices, a large
"glitch" on PENTAGON (for example in ZX-WORDe).
This is why you need to add port 31.
However, it is necessary to provide for disabling
this port, since there are programs that
some conflict with it (for example, the magazine ZX-
FORMAT #1). In short, look at the diagram.       
                                          
 
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