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authorjmz <jmz@FreeBSD.org>1995-09-16 16:29:16 +0000
committerjmz <jmz@FreeBSD.org>1995-09-16 16:29:16 +0000
commitf96d2d37101a40564bb5591c85fd4ce376c5ee3d (patch)
tree4757343c88b54a5a4d4eb0f8a5f838fe5773d810 /share/man/man4/joy.4
parentd500436e5d23119a6ac31100fd9268b3d8b0fc88 (diff)
downloadFreeBSD-src-f96d2d37101a40564bb5591c85fd4ce376c5ee3d.zip
FreeBSD-src-f96d2d37101a40564bb5591c85fd4ce376c5ee3d.tar.gz
Add technical specifications, and give the pinout of the game port
Submitted by: Joe Greco <jgreco@brasil.moneng.mei.com>
Diffstat (limited to 'share/man/man4/joy.4')
-rw-r--r--share/man/man4/joy.425
1 files changed, 25 insertions, 0 deletions
diff --git a/share/man/man4/joy.4 b/share/man/man4/joy.4
index a0082e6..2ed006e 100644
--- a/share/man/man4/joy.4
+++ b/share/man/man4/joy.4
@@ -54,6 +54,31 @@ status.
.It Dv JOY_GET_Y_OFFSET Fa int *offset
Get the value which is added to the Y position when reading the joystick
status.
+
+.Sh TECHNICAL SPECIFICATIONS
+
+The pinout of the DB-15 connector is as follow:
+.Pp
+ 1 XY1 (+5v)
+ 2 Switch 1
+ 3 X1 (potentiometer #1)
+ 4 Switch 1 (GND)
+ 5 Switch 2 (GND)
+ 6 Y1 (potentiometer #2)
+ 7 Switch 2
+ 8 N.C.
+ 9 XY2 (+5v)
+ 10 Switch 4
+ 11 X2 (potentiometer #3)
+ 12 Switch 3&4 (GND)
+ 13 Y2 (potentiometer #4)
+ 14 Switch 3
+ 15 N.C.
+.Pp
+Pots are normally 0-150k variable resistors (0-100k sometimes), and
+according to the IBM techref, the time is given by
+Time = 24.2e-6s + 0.011e-6s * R/Ohms
+
.Sh FILES
.Bl -tag -width /dev/joy?
.It Pa /dev/joy?
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