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Input: amijoy - fix grammar in documentation
Make small grammar fixes to Amiga joystick documentation.
Signed-off-by: George Anthony Vernon <contact@gvernon.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20250526135957.180254-4-contact@gvernon.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
authored by
George Anthony Vernon
and committed by
Dmitry Torokhov
11172ec5
ed1d9c2b
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-43
+42
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Documentation/input/devices/amijoy.rst
+42
-43
Documentation/input/devices/amijoy.rst
···
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~~~~~~~~~~~~~~~~~~~~~~~~~
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Amiga joystick extensions
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~~~~~~~~~~~~~~~~~~~~~~~~~
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~~~~~~~~~~~~~~~
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Amiga joysticks
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~~~~~~~~~~~~~~~
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Amiga 4-joystick parport extension
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Amiga 4-joystick parallel port extension
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Parallel port pins:
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===== ======== ==== ==========
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Pin Meaning Pin Meaning
···
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-------------------------------------------------------------------------------
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======== === ==== ==== ====== ========================================
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======== === ==== ==== ====== ===========================================
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NAME rev ADDR type chip Description
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======== === ==== ==== ====== ========================================
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JOY0DAT 00A R Denise Joystick-mouse 0 data (left vert, horiz)
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JOY1DAT 00C R Denise Joystick-mouse 1 data (right vert,horiz)
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======== === ==== ==== ====== ========================================
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======== === ==== ==== ====== ===========================================
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JOY0DAT 00A R Denise Joystick-mouse 0 data (left vert., horiz.)
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JOY1DAT 00C R Denise Joystick-mouse 1 data (right vert., horiz.)
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======== === ==== ==== ====== ===========================================
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These addresses each read a 16 bit register. These in turn
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are loaded from the MDAT serial stream and are clocked in on
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the rising edge of SCLK. MLD output is used to parallel load
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the external parallel-to-serial converter.This in turn is
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the external parallel-to-serial converter. This in turn is
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loaded with the 4 quadrature inputs from each of two game
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controller ports (8 total) plus 8 miscellaneous control bits
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which are new for LISA and can be read in upper 8 bits of
···
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Register bits are as follows:
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- Mouse counter usage (pins 1,3 =Yclock, pins 2,4 =Xclock)
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- Mouse counter usage (pins 1,3 =Yclock, pins 2,4 =Xclock)
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======== === === === === === === === === ====== === === === === === === ===
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BIT# 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
···
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-------------------------------------------------------------------------------
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======= === ==== ==== ====== ========================================
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======= === ==== ==== ====== ===========================================
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NAME rev ADDR type chip Description
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======= === ==== ==== ====== ========================================
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POT0DAT h 012 R Paula Pot counter data left pair (vert, horiz)
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POT1DAT h 014 R Paula Pot counter data right pair (vert,horiz)
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======= === ==== ==== ====== ========================================
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======= === ==== ==== ====== ===========================================
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POT0DAT h 012 R Paula Pot counter data left pair (vert., horiz.)
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POT1DAT h 014 R Paula Pot counter data right pair (vert., horiz.)
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======= === ==== ==== ====== ===========================================
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These addresses each read a pair of 8 bit pot counters.
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(4 counters total). The bit assignment for both
···
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+-------+------+-----+-----+-------+
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With normal (NTSC or PAL) horiz. line rate, the pots will
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give a full scale (FF) reading with about 500kohms in one
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frame time. With proportionally faster horiz line times,
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give a full scale (FF) reading with about 500k ohm in one
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frame time. With proportionally faster horiz. line times,
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the counters will count proportionally faster.
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This should be noted when doing variable beam displays.
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···
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This register controls a 4 bit bi-direction I/O port
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that shares the same 4 pins as the 4 pot counters above.
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+-------+----------+---------------------------------------------+
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| BIT# | FUNCTION | DESCRIPTION |
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+=======+==========+=============================================+
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| 15 | OUTRY | Output enable for Paula pin 33 |
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+-------+----------+---------------------------------------------+
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| 14 | DATRY | I/O data Paula pin 33 |
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+-------+----------+---------------------------------------------+
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| 13 | OUTRX | Output enable for Paula pin 32 |
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+-------+----------+---------------------------------------------+
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| 12 | DATRX | I/O data Paula pin 32 |
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+-------+----------+---------------------------------------------+
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| 11 | OUTLY | Out put enable for Paula pin 36 |
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+-------+----------+---------------------------------------------+
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| 10 | DATLY | I/O data Paula pin 36 |
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+-------+----------+---------------------------------------------+
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| 09 | OUTLX | Output enable for Paula pin 35 |
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+-------+----------+---------------------------------------------+
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| 08 | DATLX | I/O data Paula pin 35 |
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+-------+----------+---------------------------------------------+
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| 07-01 | X | Not used |
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+-------+----------+---------------------------------------------+
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| 00 | START | Start pots (dump capacitors,start counters) |
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+-------+----------+---------------------------------------------+
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+-------+----------+----------------------------------------------+
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| BIT# | FUNCTION | DESCRIPTION |
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+=======+==========+==============================================+
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| 15 | OUTRY | Output enable for Paula pin 33 |
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+-------+----------+----------------------------------------------+
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| 14 | DATRY | I/O data Paula pin 33 |
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+-------+----------+----------------------------------------------+
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| 13 | OUTRX | Output enable for Paula pin 32 |
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+-------+----------+----------------------------------------------+
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| 12 | DATRX | I/O data Paula pin 32 |
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+-------+----------+----------------------------------------------+
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| 11 | OUTLY | Out put enable for Paula pin 36 |
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+-------+----------+----------------------------------------------+
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| 10 | DATLY | I/O data Paula pin 36 |
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+-------+----------+----------------------------------------------+
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| 09 | OUTLX | Output enable for Paula pin 35 |
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+-------+----------+----------------------------------------------+
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| 08 | DATLX | I/O data Paula pin 35 |
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+-------+----------+----------------------------------------------+
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| 07-01 | X | Not used |
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+-------+----------+----------------------------------------------+
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| 00 | START | Start pots (dump capacitors, start counters) |
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+-------+----------+----------------------------------------------+