Jump to content

Photo

New PC Joystick SNES Controller Interface


8 replies to this topic

#1 jdgabbard OFFLINE  

jdgabbard

    Moonsweeper

  • 291 posts
  • Location:Tulsa, OK

Posted Thu Mar 21, 2019 10:05 AM

I thought that I might share this here, as it is relevant to the forum.  I recently designed an interface for vintage PCs with a Gameport (either an analog card or soundcard with Gameport).  I had been thinking about the idea for quite some time.  But thought that I would sit down and put the idea together.  What I came up with is the SNES-2-GP.  I've added a write up on my website.  Clint Basinger from LGR liked the idea, and I'm sending him one to play around with.  If anyone is interested reading about it's development, the link is below.

 

http://retrodepot.net/?page_id=1078

 

 

img_6333.jpg?resize=768%2C647


Edited by jdgabbard, Thu Mar 21, 2019 10:10 AM.


#2 ave1 OFFLINE  

ave1

    Dragonstomper

  • 522 posts

Posted Tue Apr 16, 2019 8:21 AM

Can you get this to work with the SNES mouse?

#3 jdgabbard OFFLINE  

jdgabbard

    Moonsweeper

  • Topic Starter
  • 291 posts
  • Location:Tulsa, OK

Posted Tue Apr 16, 2019 9:24 AM

Possibly.  I don't have an SNES mouse to test with.  But at the end of the day it would just emulate a joystick.



#4 mr_me OFFLINE  

mr_me

    River Patroller

  • 4,073 posts
  • Location:Ontario

Posted Tue Apr 16, 2019 12:26 PM

Is hat mode not using the gameport second analog stick axis. What's the difference?

#5 jdgabbard OFFLINE  

jdgabbard

    Moonsweeper

  • Topic Starter
  • 291 posts
  • Location:Tulsa, OK

Posted Tue Apr 16, 2019 1:22 PM

It is using the second axis.  But there is a difference in how those axis work under the two modes.  In the traditional mode, it is simply another 2-axis current sensing.  However, in HAT mode, it is a 1-axis current sense line.  So the two modes are fundamentally different, and require different circuits to operate.  I got around this limitation with some clever design implementations, and a bunch of digital to analog circuitry.



#6 DragonGrafx-16 OFFLINE  

DragonGrafx-16

    Moonsweeper

  • 477 posts

Posted Tue Apr 16, 2019 1:51 PM

Why would you use an SNES mouse on a vintage PC. My DOS PC has a PS/2 mouse port so I just use that wit a laser mouse. Though even PC serial mice would be better than the SNES mouse.

#7 ave1 OFFLINE  

ave1

    Dragonstomper

  • 522 posts

Posted Tue Apr 16, 2019 7:55 PM

Why would you use an SNES mouse on a vintage PC. My DOS PC has a PS/2 mouse port so I just use that wit a laser mouse. Though even PC serial mice would be better than the SNES mouse.


On PC flight games that have joystick compatibility and not mouse compatibility, it could be interesting...

Also, I have an adapter for 15 pin PC controllers to work on the 5200. If the mouse could be made to work in an analog way with the SNES to 15 pin PC adapter and the two adapters were combined, it might make playing some of the analog 5200 games quite cool (Dreadnaught Factor, Tempest, Beamrider, etc...).

#8 jdgabbard OFFLINE  

jdgabbard

    Moonsweeper

  • Topic Starter
  • 291 posts
  • Location:Tulsa, OK

Posted Tue Apr 16, 2019 8:07 PM

To get a true analog feel youd probably need extra circuitry. The way this is design is to provide an analog equivalent of a digital value. So when in the idle state it is mid range. When a button is pressed the value either goes full swing sink or no sink. What you suggest would be possible, but youd need a digital potentiometer. But I dont think they make them that: 1) have the correct value, and 2) the results Ive seen show they are not precise.

#9 ave1 OFFLINE  

ave1

    Dragonstomper

  • 522 posts

Posted Wed Apr 17, 2019 12:48 PM

Alright- thanks for the answers. Appreciate it :)




0 user(s) are browsing this forum

0 members, 0 guests, 0 anonymous users