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Diffstat (limited to 'src/devices/bus/vcs_ctrl/keypad.c')
-rw-r--r--src/devices/bus/vcs_ctrl/keypad.c139
1 files changed, 139 insertions, 0 deletions
diff --git a/src/devices/bus/vcs_ctrl/keypad.c b/src/devices/bus/vcs_ctrl/keypad.c
new file mode 100644
index 00000000000..0ef8b6b4db3
--- /dev/null
+++ b/src/devices/bus/vcs_ctrl/keypad.c
@@ -0,0 +1,139 @@
+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Atari Video Computer System keypad emulation
+
+**********************************************************************/
+
+#include "keypad.h"
+
+
+
+//**************************************************************************
+// DEVICE DEFINITIONS
+//**************************************************************************
+
+const device_type VCS_KEYPAD = &device_creator<vcs_keypad_device>;
+
+
+static INPUT_PORTS_START( vcs_keypad )
+ PORT_START("KEYPAD")
+ PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 1") PORT_CODE(KEYCODE_7_PAD)
+ PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 2") PORT_CODE(KEYCODE_8_PAD)
+ PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 3") PORT_CODE(KEYCODE_9_PAD)
+ PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 4") PORT_CODE(KEYCODE_4_PAD)
+ PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 5") PORT_CODE(KEYCODE_5_PAD)
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 6") PORT_CODE(KEYCODE_6_PAD)
+ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 7") PORT_CODE(KEYCODE_1_PAD)
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 8") PORT_CODE(KEYCODE_2_PAD)
+ PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 9") PORT_CODE(KEYCODE_3_PAD)
+ PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad *") PORT_CODE(KEYCODE_0_PAD)
+ PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad 0") PORT_CODE(KEYCODE_DEL_PAD)
+ PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("keypad #") PORT_CODE(KEYCODE_ENTER_PAD)
+INPUT_PORTS_END
+
+
+//-------------------------------------------------
+// input_ports - device-specific input ports
+//-------------------------------------------------
+
+ioport_constructor vcs_keypad_device::device_input_ports() const
+{
+ return INPUT_PORTS_NAME( vcs_keypad );
+}
+
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+//-------------------------------------------------
+// vcs_keypad_device - constructor
+//-------------------------------------------------
+
+vcs_keypad_device::vcs_keypad_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
+ device_t(mconfig, VCS_KEYPAD, "Atari / CBM Keypad", tag, owner, clock, "vcs_keypad", __FILE__),
+ device_vcs_control_port_interface(mconfig, *this),
+ m_keypad(*this, "KEYPAD")
+{
+}
+
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void vcs_keypad_device::device_start()
+{
+ m_column = 0;
+ save_item(NAME(m_column));
+}
+
+
+//-------------------------------------------------
+// vcs_joy_w - joystick write
+//-------------------------------------------------
+
+UINT8 vcs_keypad_device::vcs_joy_r()
+{
+ for ( int i = 0; i < 4; i++ )
+ {
+ if ( ! ( ( m_column >> i ) & 0x01 ) )
+ {
+ if ( ( m_keypad->read() >> 3*i ) & 0x04 )
+ {
+ return 0xff;
+ }
+ else
+ {
+ return 0;
+ }
+ }
+ }
+ return 0xff;
+}
+
+void vcs_keypad_device::vcs_joy_w( UINT8 data )
+{
+ m_column = data & 0x0F;
+}
+
+UINT8 vcs_keypad_device::vcs_pot_x_r()
+{
+ for ( int i = 0; i < 4; i++ )
+ {
+ if ( ! ( ( m_column >> i ) & 0x01 ) )
+ {
+ if ( ( m_keypad->read() >> 3*i ) & 0x01 )
+ {
+ return 0;
+ }
+ else
+ {
+ return 0xff;
+ }
+ }
+ }
+ return 0;
+}
+
+UINT8 vcs_keypad_device::vcs_pot_y_r()
+{
+ for ( int i = 0; i < 4; i++ )
+ {
+ if ( ! ( ( m_column >> i ) & 0x01 ) )
+ {
+ if ( ( m_keypad->read() >> 3*i ) & 0x02 )
+ {
+ return 0;
+ }
+ else
+ {
+ return 0xff;
+ }
+ }
+ }
+ return 0;
+}