How can I connect a joystick?

-Micky · Post by **-Micky** » 09 Sep 2010 15:04

How can I connect a joystick to the Sprinter 2000? The connector is X1. But what means JK0-JK4?

Normal is:

1 Forward
2 Back
3 Left
4 Right
5 NC
6 Button 1
7 +5V
8 GND
9 NC

Micky

Shaos · Post by **Shaos** » 09 Sep 2010 19:21

JK0-JK4 are your 5 buttons - try connect each of this pins one by one to the ground when any kempston enabled game is active and you will see what is what

Shaos · Post by **Shaos** » 09 Sep 2010 19:26

Try these mapping:
JK0 - right
JK1 - left
JK2 - down
JK3 - up
JK4 - fire

P.S. I found scheme of converter from you 9-pin joystick to Kempston interface:
http://8bit.yarek.pl/hardware/zx.joystick/kjschem.gif

-Micky · Post by **-Micky** » 25 Sep 2010 11:26

What kind of joysticks are supported by the Sprinter 2000? The joystick I use with my ZX 48K did not work.

Micky

Shaos · Post by **Shaos** » 26 Sep 2010 07:35

-Micky wrote:What kind of joysticks are supported by the Sprinter 2000? The joystick I use with my ZX 48K did not work.

It's a "Kempston" Joystick - most popular in ex-USSR

-Micky · Post by **-Micky** » 26 Sep 2010 07:42

Is a Competition-Pro joystick Kempston compatible or not?

Micky

Shaos · Post by **Shaos** » 26 Sep 2010 07:46

See http://www.guildserver.co.uk/tempfiles/sjs-atari.jpg

It looks like what you described in your first post is "Atari" interface, so you need to have Atari joystick to work as a Kempston for this mapping

For old ZX joystick schematic is different

-Micky · Post by **-Micky** » 26 Sep 2010 08:13

Competiton Pro works on Atari too. Then it is Kempston compatibel and should work.

Micky

-Micky · Post by **-Micky** » 29 Sep 2010 01:57

Shaos wrote:Try these mapping:
JK0 - right
JK1 - left
JK2 - down
JK3 - up
JK4 - fire

I know now why my joystick did not work:

J_VCC is Joystick GND

Micky

Shaos · Post by **Shaos** » 29 Sep 2010 06:53

It's really strange...

-Micky · Post by **-Micky** » 29 Sep 2010 16:00

Shaos wrote:It's really strange...

It is very unusual that VCC is on joystick GND.

Micky

Shaos · Post by **Shaos** » 29 Sep 2010 16:30

check this schematics:
http://www.epanorama.net/documents/joys ... stick.html
it looks like atari's GND is actually "common" wire, but in case of Kemptson interface (at least in Sp2000 schematics) "common" is +5V, not GND, so this is the reason why Kempston +5V should be connected to atari's "GND" (all JK pulled down to real GND through 1K resistors)