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RetroConnector
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added calibration BASIC program

This commit is contained in:
Charles Mangin 2014-01-14 15:52:00 -05:00
parent f1c346c3a9
commit 49ec8d22d8
1 changed files with 7 additions and 1 deletions
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8
USB_Joystick/README.md
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@ -19,7 +19,7 @@ Calibration
This BASIC program is helpful in calibrating the RetroConnector Joystick Interface board. Type this in at the BASIC prompt on your Apple II:
10 print pdl(0) " " pdl(1) " " peek(-16287) " " peek(-16286)
10 print pdl(0) " " pdl(1)
20 goto 10
Then type *RUN* and hit enter.
@ -28,3 +28,9 @@ While the resulting numbers scroll down the screen, use a small screwdriver to a
Most Apple II programs allow for a certain "dead zone" in the middle of the joystick values, so it's not necessary to be precisely 127 at center.
To test buttons along with joystick calibration, the above program can be adjusted so:
10 print pdl(0) " " pdl(1) " " peek(-16287) " " peek(-16286)
20 goto 10
The last two values are button 1 and 2. When pressed, they should be *above* 127, when released, *below* 127.