ATARIJOY_VGA_SCHEMATIC  V1.0
Design by: Jeff Ledger

How to hook up an Atari Joystick on the VGA header of the Demo/Proto boards.

Files:
	ATARIJOY_VGA_SCHEMATIC.JPG 	Build Diagram
	
	joystickdemo.spin		Simple Test Program
	   |
	   + TV_Text.spin
	   + TV.spin
	   + joystick_drv_001.spin	Atari Joystick Driver

	NES Replacement Code.txt	Drop in code for Hydra Book/CD
					which has embedded NES code.
					{Simply replace the PUB section 							with this snippit of code.}

	gamepad_drv_001.spin		Drop-in replacement for NES driver
					used with the Hydra Book/CD

Detail:

  I wanted a way to connect a simple game controller without loosing pins
  on the demoboard.   If you have a Demoboard or a Protoboard with the VGA
  connector, then this is a simple adapter which will give you a joystick
  port at the expense of VGA out.

  Five of the VGA out pins are simply turned the other direction, using the
  existing 240ohms resistors for debounce.

Parts Required:

  1) Small pref board
  1) DB9 Male (for the Atari Joystick Side)
  1) DB15 Male (for the VGA connection side)
  6) 10K Resistors

  --Jeff-  jeffledger@gmail.com






Atari Joystick Driver & Virtual NES Driver  
 

  Contains Atari Joystick Driver for VGA header as well as a Virtual NES driver for Hydra demos.
Includes build schematic for conversion adapter
 
