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-rw-r--r--src/mess/machine/x1.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/mess/machine/x1.c b/src/mess/machine/x1.c
new file mode 100644
index 00000000000..c8cf472e689
--- /dev/null
+++ b/src/mess/machine/x1.c
@@ -0,0 +1,67 @@
+
+#include "includes/x1.h"
+
+
+//**************************************************************************
+// LIVE DEVICE
+//**************************************************************************
+
+const device_type X1_KEYBOARD = &device_creator<x1_keyboard_device>;
+
+//-------------------------------------------------
+// z80ctc_device - constructor
+//-------------------------------------------------
+
+x1_keyboard_device::x1_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
+ : device_t(mconfig, X1_KEYBOARD, "X1 Keyboard", tag, owner, clock),
+ device_z80daisy_interface(mconfig, *this)
+{
+}
+
+//-------------------------------------------------
+// device_start - device-specific startup
+//-------------------------------------------------
+
+void x1_keyboard_device::device_start()
+{
+}
+
+//**************************************************************************
+// DAISY CHAIN INTERFACE
+//**************************************************************************
+
+//-------------------------------------------------
+// z80daisy_irq_state - return the overall IRQ
+// state for this device
+//-------------------------------------------------
+
+int x1_keyboard_device::z80daisy_irq_state()
+{
+ x1_state *state = machine().driver_data<x1_state>();
+ if(state->m_key_irq_flag != 0)
+ return Z80_DAISY_INT;
+ return 0;
+}
+
+
+//-------------------------------------------------
+// z80daisy_irq_ack - acknowledge an IRQ and
+// return the appropriate vector
+//-------------------------------------------------
+
+int x1_keyboard_device::z80daisy_irq_ack()
+{
+ x1_state *state = machine().driver_data<x1_state>();
+ state->m_key_irq_flag = 0;
+ cputag_set_input_line(device().machine(),"x1_cpu",INPUT_LINE_IRQ0,CLEAR_LINE);
+ return state->m_key_irq_vector;
+}
+
+//-------------------------------------------------
+// z80daisy_irq_reti - clear the interrupt
+// pending state to allow other interrupts through
+//-------------------------------------------------
+
+void x1_keyboard_device::z80daisy_irq_reti()
+{
+}