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c64 mouse: add note (nw)

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This commit is contained in:
hap 2019-05-13 20:44:41 +02:00
parent 137a4109b9
commit 561cb3b964
1 changed files with 12 additions and 5 deletions
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17
src/devices/bus/vcs_ctrl/mouse.cpp
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@ -2,7 +2,14 @@
// copyright-holders:Curt Coder, hap // copyright-holders:Curt Coder, hap
/********************************************************************** /**********************************************************************
Mouse emulation (Commodore 1351 or compatible) Mouse emulation (Commodore 1351 or compatible)
At power-on, holding the right mouse button will put it in joystick mode.
In proportional mode, left button goes to pin #6, right button to pin #1.
POT(X/Y) d1-d6 holds the current direction, d7 unused, d0 is a 'noise bit'.
TODO:
- joystick mode
**********************************************************************/ **********************************************************************/
@ -25,10 +32,10 @@ static INPUT_PORTS_START( vcs_mouse )
PORT_BIT( 0xde, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0xde, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("POTX") PORT_START("POTX")
PORT_BIT( 0xff, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_BIT( 0x3f, 0x00, IPT_MOUSE_X) PORT_SENSITIVITY(15) PORT_KEYDELTA(10)
PORT_START("POTY") PORT_START("POTY")
PORT_BIT( 0xff, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(30) PORT_KEYDELTA(20) PORT_REVERSE PORT_BIT( 0x3f, 0x00, IPT_MOUSE_Y) PORT_SENSITIVITY(15) PORT_KEYDELTA(10) PORT_REVERSE
INPUT_PORTS_END INPUT_PORTS_END
@ -86,7 +93,7 @@ uint8_t vcs_mouse_device::vcs_joy_r()
uint8_t vcs_mouse_device::vcs_pot_x_r() uint8_t vcs_mouse_device::vcs_pot_x_r()
{ {
return m_potx->read(); return m_potx->read() << 1;
} }
@ -96,5 +103,5 @@ uint8_t vcs_mouse_device::vcs_pot_x_r()
uint8_t vcs_mouse_device::vcs_pot_y_r() uint8_t vcs_mouse_device::vcs_pot_y_r()
{ {
return m_poty->read(); return m_poty->read() << 1;
} }