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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
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Amiga 4-joystick parport extension
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Parallel port pins:
(2) - Up1 (6) - Up2
(3) - Down1 (7) - Down2
(4) - Left1 (8) - Left2
(5) - Right1 (9) - Right2
(13) - Fire1 (11) - Fire2
(18) - Gnd1 (18) - Gnd2
Amiga digital joystick pinout
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(1) - Up
(2) - Down
(3) - Left
(4) - Right
(5) - n/c
(6) - Fire button
(7) - +5V (50mA)
(8) - Gnd
(9) - Thumb button
Amiga mouse pinout
~~~~~~~~~~~~~~~~~~
(1) - V-pulse
(2) - H-pulse
(3) - VQ-pulse
(4) - HQ-pulse
(5) - Middle button
(6) - Left button
(7) - +5V (50mA)
(8) - Gnd
(9) - Right button
Amiga analog joystick pinout
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(1) - Top button
(2) - Top2 button
(3) - Trigger button
(4) - Thumb button
(5) - Analog X
(6) - n/c
(7) - +5V (50mA)
(8) - Gnd
(9) - Analog Y
Amiga lightpen pinout
~~~~~~~~~~~~~~~~~~~~~
(1) - n/c
(2) - n/c
(3) - n/c
(4) - n/c
(5) - Touch button
(6) - /Beamtrigger
(7) - +5V (50mA)
(8) - Gnd
(9) - Stylus button
-------------------------------------------------------------------------------
NAME rev ADDR type chip Description
JOY0DAT 00A R Denise Joystick-mouse 0 data (left vert, horiz)
JOY1DAT 00C R Denise Joystick-mouse 1 data (right vert,horiz)
These addresses each read a 16 bit register. These in turn
are loaded from the MDAT serial stream and are clocked in on
the rising edge of SCLK. MLD output is used to parallel load
the external parallel-to-serial converter.This in turn is
loaded with the 4 quadrature inputs from each of two game
controller ports (8 total) plus 8 miscellaneous control bits
which are new for LISA and can be read in upper 8 bits of
LISAID.
Register bits are as follows:
Mouse counter usage (pins 1,3 =Yclock, pins 2,4 =Xclock)
BIT# 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
JOY0DAT Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 X7 X6 X5 X4 X3 X2 X1 X0
JOY1DAT Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 X7 X6 X5 X4 X3 X2 X1 X0
0=LEFT CONTROLLER PAIR, 1=RIGHT CONTROLLER PAIR.
(4 counters total). The bit usage for both left and right
addresses is shown below. Each 6 bit counter (Y7-Y2,X7-X2) is
clocked by 2 of the signals input from the mouse serial
stream. Starting with first bit received:
+-------------------+-----------------------------------------+
| Serial | Bit Name | Description |
+--------+----------+-----------------------------------------+
| 0 | M0H | JOY0DAT Horizontal Clock |
| 1 | M0HQ | JOY0DAT Horizontal Clock (quadrature) |
| 2 | M0V | JOY0DAT Vertical Clock |
| 3 | M0VQ | JOY0DAT Vertical Clock (quadrature) |
| 4 | M1V | JOY1DAT Horizontal Clock |
| 5 | M1VQ | JOY1DAT Horizontal Clock (quadrature) |
| 6 | M1V | JOY1DAT Vertical Clock |
| 7 | M1VQ | JOY1DAT Vertical Clock (quadrature) |
+--------+----------+-----------------------------------------+
Bits 1 and 0 of each counter (Y1-Y0,X1-X0) may be
read to determine the state of the related input signal pair.
This allows these pins to double as joystick switch inputs.
Joystick switch closures can be deciphered as follows:
+------------+------+---------------------------------+
| Directions | Pin# | Counter bits |
+------------+------+---------------------------------+
| Forward | 1 | Y1 xor Y0 (BIT#09 xor BIT#08) |
| Left | 3 | Y1 |
| Back | 2 | X1 xor X0 (BIT#01 xor BIT#00) |
| Right | 4 | X1 |
+------------+------+---------------------------------+
-------------------------------------------------------------------------------
NAME rev ADDR type chip Description
JOYTEST 036 W Denise Write to all 4 joystick-mouse counters at once.
Mouse counter write test data:
BIT# 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
JOYxDAT Y7 Y6 Y5 Y4 Y3 Y2 xx xx X7 X6 X5 X4 X3 X2 xx xx
JOYxDAT Y7 Y6 Y5 Y4 Y3 Y2 xx xx X7 X6 X5 X4 X3 X2 xx xx
-------------------------------------------------------------------------------
NAME rev ADDR type chip Description
POT0DAT h 012 R Paula Pot counter data left pair (vert, horiz)
POT1DAT h 014 R Paula Pot counter data right pair (vert,horiz)
These addresses each read a pair of 8 bit pot counters.
(4 counters total). The bit assignment for both
addresses is shown below. The counters are stopped by signals
from 2 controller connectors (left-right) with 2 pins each.
BIT# 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
RIGHT Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 X7 X6 X5 X4 X3 X2 X1 X0
LEFT Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 X7 X6 X5 X4 X3 X2 X1 X0
+--------------------------+-------+
| CONNECTORS | PAULA |
+-------+------+-----+-----+-------+
| Loc. | Dir. | Sym | pin | pin |
+-------+------+-----+-----+-------+
| RIGHT | Y | RX | 9 | 33 |
| RIGHT | X | RX | 5 | 32 |
| LEFT | Y | LY | 9 | 36 |
| LEFT | X | LX | 5 | 35 |
+-------+------+-----+-----+-------+
With normal (NTSC or PAL) horiz. line rate, the pots will
give a full scale (FF) reading with about 500kohms in one
frame time. With proportionally faster horiz line times,
the counters will count proportionally faster.
This should be noted when doing variable beam displays.
-------------------------------------------------------------------------------
NAME rev ADDR type chip Description
POTGO 034 W Paula Pot port (4 bit) bi-direction and data, and pot counter start.
-------------------------------------------------------------------------------
NAME rev ADDR type chip Description
POTINP 016 R Paula Pot pin data read
This register controls a 4 bit bi-direction I/O port
that shares the same 4 pins as the 4 pot counters above.
+-------+----------+---------------------------------------------+
| BIT# | FUNCTION | DESCRIPTION |
+-------+----------+---------------------------------------------+
| 15 | OUTRY | Output enable for Paula pin 33 |
| 14 | DATRY | I/O data Paula pin 33 |
| 13 | OUTRX | Output enable for Paula pin 32 |
| 12 | DATRX | I/O data Paula pin 32 |
| 11 | OUTLY | Out put enable for Paula pin 36 |
| 10 | DATLY | I/O data Paula pin 36 |
| 09 | OUTLX | Output enable for Paula pin 35 |
| 08 | DATLX | I/O data Paula pin 35 |
| 07-01 | X | Not used |
| 00 | START | Start pots (dump capacitors,start counters) |
+-------+----------+---------------------------------------------+
-------------------------------------------------------------------------------