Drew wrote:
On Aug 20, 7:16 pm, Drew <GoggleD...@gmail.com> wrote:On 20 Aug, 07:45, Drew <GoggleD...@gmail.com> wrote:On 19 Aug, 20:25, "Ferdinan Meyer-hermann" <ferdinan.meyer- herm...@a2central.com.remove-5h3-this> wrote:To: Drew Drew wrote:Hi, I am hoping this is a simple one :-). I have a ROM03 IIGS with a ZIPGSX (12.5Mhz 64K) and have recently got it out of storage. I was trying to play some old games last night but thejoystickwouldnt move down at all (up left and right worked fine). I tried thejoystickon another GS with another ZIPGSX card and all worked fine. I have made sure the CDA for the ZIP says thatjoystickdelay is enabled. Any ideas?Two, actually. The first: Yourjoystickis out of calibration. start the GS and type in the following simple applesoft program: ]NEW ]10 PRINT PDL(0),PDL(1) ]20 GOTO 10 ]RUN You will have two columns of lines on-screen. the first is the X-Axis (left/right), while the second is the Y-Axis (up/down). The values should be 0 in the upper/left position, 127 in the middle and 255 in the lower/right position. If the middle values are incorrect, you can adjust them using two controls that are usually on the bottom of thejoystick. The calibration needs to be done for every computer thejoystickis used on. It will, usually also work on others, but you don't know for sure. If the middle value is 127 and 255 is still not reached in the lowest position, then you need idea two: Thejoystickport uses some capacitors that can go out of tolerance. You will then not be able to get the full range out of thejoystick. The best solution would be to replace the caps, but I don't know where they exactly are. At least you can also connect a correction cap in theJoystick connector or even to thejoystick(this is what I did when I had the same problem). If you have calibrated thejoystickand tell me the readings you get in the extreme paddle positions, I can tell you which cap you would need, and where to connect it. Regards, FerdinandThanks for all the info :-), will give that a try tonight. Drew- Hide quoted text - - Show quoted text -Hi Ferdinand, Thank you so much for that basic program to check calibration. As soon as did that all was ok. They must have been so far out that :-). For a bit I thought my iigs setup was conflicting for some reason. Cheers Andrew- Hide quoted text - - Show quoted text -I went to play Silpheed today (on ROM03, ZIP GSX) and noticed that i could not go down the screen using my CH Mach 3 Joystick. I thought that maybe my calibration was out so ran the basic program to calibrate only to find that everthing was perfect. I ran couple of other games and joystick ran fine. I then used a spare joystick i have which is a Kraft one and everything worked ok. So there seems to be an issue with my CH March 3 and Silpheed...which seems odd as it seems to work fine with every other game I have. Any ideas...or is it just one of those things..?
You may find that a slight tweak in the direction of increasing the "down" values will get it to work. Some games assumed that all joysticks could present resistances that would result in a full 0-255 range for the normal paddle routines. If your joystick in fact covers the full 0-255 range, then the Silpheed paddle reader may actually be incorrect, in the sense that it requires an even larger resistance than would produce 255 with the standard paddle routine. -michael AppleCrate II: An Apple II "blade server"! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."