dseah@wpi.wpi.edu (David I Seah) (05/03/89)
For a while I have been contemplating the Apple II joystick...I'd like some feedback on these ideas: Reducing the range of Apple joystick potentiometers from 150Kohm to around 100K or so: Would this allow people to use the joystick for accelerated 8-bit games on the IIGS? Would this allow somewhat improved joystick response for native mode GS games? I'm assuming that this would allow for quicker draining of the capacitor in timing the analog inputs...sorry for the garbled terminology. ADB joysticks: With the problems of using those old Apple II joysticks on a GS, how about making new ADB devices that could still be compatible with old software? The IIGS keyboard is an ADB device, yet old software that tweaks the old keyboard locations $C000 and $C010 still work. In emulation, the ADB joystick would act like an old 150Kohm one. In native mode, the joystick could react near instantaneously, simplifying game loops and so forth. Better yet, the Apple II gaming world could AT LAST have 2 joysticks that didn't intefere the heck out of each other. Or even 3, 4, 16 joysticks! Bwa ha ha ha! Question: How much does it cost to make a device ADB compatible? Are these parts availiable solely at the whim of Corporate Apple? Dave Seah (dseah@wpi.wpi.edu, dseah@wpi.bitnet);
STEVENS@SENECA.BITNET (05/04/89)
From: SENRED::STEVENS 3-MAY-1989 22:06 To: Orig_To! infoapp@brl.mil, STEVENS Subj: re:adb devices I'm sorry but I cannot for the life of me figure out how to do all those fancy > froms > and to's BUT I can respond to a mailing with a "re:" in the subject line! Good eh? :-) anyways! someone was askin about the joystick Pots. they were wondering if a person could substitute 100k ohm Pots for 150k ohm (standard). well My Joystick has exactly that. EXCEPT that they add 50k ohms to the High lead. that makes the Joystick toooo sensative in my opinion! one must remember that the pots are "Logarythmic" pots. (ie: non linear) However i think that the idea has Possibilities for gimiking the games for FAST GS's. HOWEVER wouldn't it be easier to adjust the speed from the Control panel? I have experimented with some of my good 'ol ][, //e games on a friends GS and I found no probs. But i guess that gs owners would be better quallified to finish this for me. SO take it away //gs owners! TA DA! thanks in advance! , in retrospect, verbatum, and for LISTENING to my DRAWL! Murray Stevens@seneca P.S. (what is wrong with the Blue Jays?)
dseah@wpi.wpi.edu (David I Seah) (05/05/89)
In article <8905040042.aa01956@SMOKE.BRL.MIL> STEVENS@SENECA.BITNET writes: >...someone was askin about the joystick Pots. they were wondering if a >person could substitute 100k ohm Pots for 150k ohm (standard). well My Joystick >has exactly that. EXCEPT that they add 50k ohms to the High lead. that makes >the Joystick toooo sensative in my opinion! one must remember that the pots >are "Logarythmic" pots. (ie: non linear) However i think that the idea has >Possibilities for gimiking the games for FAST GS's. HOWEVER wouldn't it be >easier to adjust the speed from the Control panel? I have experimented with >some of my good 'ol ][, //e games on a friends GS and I found no probs. But i >guess that gs owners would be better quallified to finish this for me. SO >take it away //gs owners! TA DA! (Dave gets ready for another one of his, "When I was a youth in Taiwan..." stories) When I was back in Taiwan, using those cloned Apple II, they sold knock-offs of the Mach III joystick (the old, old one). These used non-linear 100Kohm pots, and boy did they suck! The joystick was, as Steve notes, WAY to sensitive, and the upper range was all crammed together. It would be nice if one could play Chuck Yeager's Advanced Flight Simulator on high speed without having to recalibrate the joystick. It's definitely better fast! Dave Seah (dseah@wpi.wpi.edu, dseah@wpi.bitnet);
stevef@pro-nucleus.UUCP ("Steven J. Freitas") (05/07/89)
Network Comment: to #244 by pnet01!crash!husc6.harvard.edu!m2c!wpi!dseah Dave, I've seen a couple of ADB adapters apart (from Kraft and CH Products), and what I saw was one (count 'em) custom chip. As you know these cost megabucks to prototype, so any ADB adaptation you're looking into should probably be done with a heaping amount of cannibalization. :) Steven J. Freitas (<- me) UUCP: crash!pnet01!pro-sol!pro-nucleus!stevef ARPA: crash!pnet01!pro-sol!pro-nucleus!stevef@nosc.mil INET: stevef@pro-nucleus.cts.com ProLine: stevef@pro-nucleus