2. Amiga joystick extensions¶
2.1. Amiga 4-joystick parport extension¶
Parallel port pins:
| Pin | Meaning | Pin | Meaning |
|---|---|---|---|
| 2 | Up1 | 6 | Up2 |
| 3 | Down1 | 7 | Down2 |
| 4 | Left1 | 8 | Left2 |
| 5 | Right1 | 9 | Right2 |
| 13 | Fire1 | 11 | Fire2 |
| 18 | Gnd1 | 18 | Gnd2 |
2.2. Amiga digital joystick pinout¶
| Pin | Meaning |
|---|---|
| 1 | Up |
| 2 | Down |
| 3 | Left |
| 4 | Right |
| 5 | n/c |
| 6 | Fire button |
| 7 | +5V (50mA) |
| 8 | Gnd |
| 9 | Thumb button |
2.3. Amiga mouse pinout¶
| Pin | Meaning |
|---|---|
| 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 |
2.4. Amiga analog joystick pinout¶
| Pin | Meaning |
|---|---|
| 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 |
2.5. Amiga lightpen pinout¶
| Pin | Meaning |
|---|---|
| 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)