🚀 go-pugleaf

On Fri Nov 20 08:27:04 EST 1992, message <1992Nov19.174707.8487@mydual.uucp>
I posted a schematic with a confusing error.  Correct version follows:

You can attach two joysticks to the controller.  Each joystick follows
this wiring diagram:

                   +------------------ 1,9 +5VDC
                   |                   
                   +---/\/\/\-- 0-100K
                   |     ^
                   |     |    X-coord
                   |     +------------ 3,11 Timer
                   |                   
                   +---/\/\/\-- 0-100K
                           ^
                           |  Y-coord
                           +---------- 6,13 Timer

                   +------------------ 2,10 To 1k Pullup
                 | o  #1 Button
                 | o
                   +------------------ 4,12 GND

                   +------------------ 7,14 To 1k Pullup
                 | o  #2 Button
                 | o
                   +------------------ 4,12 GND

Pins 1-7 Are for Joystick A, pins 9-14 are for joystick B.  You can also
use paddles, having only one 0-100K pot and one button per controller. 
The data show up in the same place but are named differently.  Here's a
chart of the the byte at 201H:

Bit     |  7  |  6  |  5  |  4  |  3  |  2  |  1  |  0  |
Joystick|B-#2 |B-#1 |A-#2 |A-#1 | B-Y | B-X | A-Y | A-X |
Paddle  |  D  |  C  |  B  |  A  |  D  |  C  |  B  |  A  |
Pin     | 14  | 10  |  7  |  2  | 13  | 11  |  6  |  3  |
Device  |<-------Buttons------->|<------Resistors------>|

Explanation and additional info:

Well, it confused me--so I got it wrong.  The buttons *do not* go to
one-shots.  On the card, each button connects through 1000 Ohms to      
+5VDC, through 51pF to ground, and to one input of the 74LS244 bus driver.  

Here's what the tech reference says:

The four digital inputs each have a 1-kilohm pullup resistor to +5 Vdc. 
With no drives on these inputs, a 1 is read.  For a 0 reading, the
inputs must be pulled to ground.

The trigger button inputs are read by an In from address hex 201.

Now as to the real position of the one-shots, they are on the resistor
inputs to convert resistance to delay time.  

My thanks to geir.pedersen@usit.uio.no for questioning the prior post
and makeing me realize my error.  My apologies to the rest of you.

-- 
Kirtland H. Olson                     olson%mydual.uucp@alliant.com