summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/bus/centronics/digiblst.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/bus/centronics/digiblst.h')
-rw-r--r--src/devices/bus/centronics/digiblst.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/devices/bus/centronics/digiblst.h b/src/devices/bus/centronics/digiblst.h
new file mode 100644
index 00000000000..340e5cd0f4c
--- /dev/null
+++ b/src/devices/bus/centronics/digiblst.h
@@ -0,0 +1,60 @@
+// license:BSD-3-Clause
+// copyright-holders:Barry Rodewald
+/*
+ * digiblst.h
+ *
+ * Digiblaster - a DIY printer port DAC for the Amstrad CPC
+ * Printed in the German magazine CPC Amstrad International issue 8-9/1991
+ * Uses Strobe (inverted on the CPC) for the 8th bit (CPCs only have 7-bit printer ports)
+ *
+ * Code borrows from the Covox Speech Thing device.
+ *
+ * Created on: 23/08/2014
+ */
+
+#ifndef DIGIBLST_H_
+#define DIGIBLST_H_
+
+#pragma once
+
+#include "ctronics.h"
+#include "sound/dac.h"
+
+// ======================> centronics_covox_device
+
+class centronics_digiblaster_device : public device_t,
+ public device_centronics_peripheral_interface
+{
+public:
+ // construction/destruction
+ centronics_digiblaster_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data0 ) { if (state) m_data |= 0x01; else m_data &= ~0x01; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data1 ) { if (state) m_data |= 0x02; else m_data &= ~0x02; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data2 ) { if (state) m_data |= 0x04; else m_data &= ~0x04; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data3 ) { if (state) m_data |= 0x08; else m_data &= ~0x08; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data4 ) { if (state) m_data |= 0x10; else m_data &= ~0x10; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data5 ) { if (state) m_data |= 0x20; else m_data &= ~0x20; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_data6 ) { if (state) m_data |= 0x40; else m_data &= ~0x40; update_dac(); }
+ virtual DECLARE_WRITE_LINE_MEMBER( input_strobe ) { if (state) m_data &= ~0x80; else m_data |= 0x80; update_dac(); }
+
+private:
+ required_device<dac_device> m_dac;
+
+ void update_dac();
+
+ UINT8 m_data;
+};
+
+// device type definition
+extern const device_type CENTRONICS_DIGIBLASTER;
+
+
+#endif /* DIGIBLST_H_ */