Dual  joystick/mouse  interface interface for ZX and compatible 

Main fetaures: 

• Magic button ( reset, joytick mode)
• fully passthrough - you can connect any device that uses ZX Edge connector.
• Joystick mode/activity LEDs
• built upon XC95144XL CPLD and Atmel AVR
• jumperless configuration stored in eprom memory
• 12V/9V/5V status voltages leds
• works with AMIGA and ATARI ST mice and ATARI compatybile joysticks
• device will not work with orginal Sinclcair JOYSTICKS

AFTER "POWER ON" CONFIGURATION ( READ THIS VERY CAREFULLY) 

• after power on, device blinks with LED`s  DOT  - it means:
  • second JOYSTICK PORT IS INACTIVE  untill Your action  - read below

• If  device present at second port is JOYSTICK:
  • Press FIRE  to ACTIVATE second port in JOY MODE (LED OFF)

• If  device present at second port is MOUSE/ mouse adapter:
  • make a smal circle with mouse to ACTIVATE second port in MOUSE MODE (LED ON)

• If You need to change  device connected: 
  • power off computer and change device
  • do NOT ATTACH / DETACH devices if POWER ON !

DISCLAIMNER/ WARNING!   LEFT MOUSE signal  equals JOY_FIRE  

If You have mouse connected and You press left button 

 device will assume JOYSTICK is connected !

any mouse movement shall set back input device as mouse

ONE BUTTON USAGE:

• allmost all is done with ONE BUTTON. Device stores setting after power OFF. 
• Pressing button cycles modes, long press and release resets spectrum (2seconds at least)

MODE 1:

• Joystick A - kempston interface port 31
• Joystick B  
  • if mouse connected - Amiga mouse as a KEMPSTON MOUSE 
  • if joystick connected - kempston joystick interface port 55

MODE 2:

• Joystick A - kempston interface port 31
• Joystick B
  • if mouse connected - ATARI ST mouse as a KEMPSTON MOUSE 
  • if joystick connected - kempston joystick interface port 95

MODE 3:

• Joystick A - Sinclair 1 (6,7,8,9,0 keys) 
• Joystick B-  Sinclair 2 (1,2,3,4,5 keys) (if mouse is present - port is inactive)

MOD0E 4:

• Joystick A - Sinclair 2 (1,2,3,4,5 keys) 
• Joystick B-  Sinclair 1 (6,7,8,9,0 keys) (if mouse is present - port is inactive)

MODE 5:

• Joystick A -  Fuller  port 127  
• Joystick B-   kempston interface port 55 (if mouse is present - port is inactive)

MODE 6:

• Joystick A - PROTEK / CURSOR ( 5,8,6,7,0 keys) 
• Joystick B-   kempston interface port 55 (if mouse is present - port is inactive)

MODE 7:

• Joystick A -  QAOP / Space keys emulation   
• Joystick B-   kempston interface  port 95 (if mouse is present - port is inactive)

MODE 8:

• Joystick A -  HUNGRY HORACE mode ( QZIP / SPACE)
• Joystick B-   kempston interface  port 95 (if mouse is present - port is inactive)

More INFO:  (https://worldofspectrum.org/faq/reference/peripherals.htm)

• Kempston

  The Kempston joystick interface differs from the other common types in that it does not map to the ZX Spectrum keyboard directly. Rather, it maps to a particular hardware port (0x1f) and support must therefore be 'built-in' to the software. Fortunately, the Kempston joystick interface was enormously popular, and support was very easy to provide, making Kempston control a common, almost standard, feature of most games.

  Assuming an appropriate interface is attached, reading from port 0x1f returns the current state of the Kempston joystick in the form 000FUDLR, with active bits high.

• Sinclair

  The 'left' Sinclair joystick maps the joystick directions and the fire button to the 1 (left), 2 (right), 3 (down), 4 (up) and 5 (fire) keys on the ZX Spectrum keyboard, and can thus be read via port 0xf7fe; see the Port 0xfe section for full details. For any of the joystick interfaces which map to keys, any game offering the appropriate form of joystick control can instead be played with the listed keys.

  The 'right' Sinclair joystick maps to keys 6 (left), 7 (right), 8 (down), 9 (up) and 0 (fire) and can therefore be read via port 0xeffe.

• Cursor (PROTEK)

  A cursor joystick interfaces maps to keys 5 (left), 6 (down), 7 (up), 8 (right) and 0 (fire). Reading a cursor joystick thus requires a combination of bit 4 of port 0xf7fe and bits 0, 2, 3 and 4 of port 0xeffe. Common interfaces offering a cursor joystick option included those produced by Protek and AGF.

• Fuller

  The Fuller Audio Box included a joystick interface. Results were obtained by reading from port 0x7f in the form F---RLDU, with active bits low.

• Kempston Mouse:
  Although better known for their Joystick interfaces, Kempston also introduced many other devices. Their mouse is emulated by Spectaculator, vbSpec, SPIN, and others.

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