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Diffstat (limited to 'src/mess/machine/c2031.h')
-rw-r--r-- | src/mess/machine/c2031.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/mess/machine/c2031.h b/src/mess/machine/c2031.h new file mode 100644 index 00000000000..1f2d9cb4ca2 --- /dev/null +++ b/src/mess/machine/c2031.h @@ -0,0 +1,93 @@ +/********************************************************************** + + Commodore 2031 Single Disk Drive emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +#pragma once + +#ifndef __C2031__ +#define __C2031__ + + +#include "emu.h" +#include "cpu/m6502/m6502.h" +#include "imagedev/flopdrv.h" +#include "formats/d64_dsk.h" +#include "formats/g64_dsk.h" +#include "machine/64h156.h" +#include "machine/6522via.h" +#include "machine/ieee488.h" + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> c2031_device + +class c2031_device : public device_t, + public device_ieee488_interface +{ +public: + // construction/destruction + c2031_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // not really public + static void on_disk_change(device_image_interface &image); + + DECLARE_WRITE_LINE_MEMBER( via0_irq_w ); + DECLARE_READ8_MEMBER( via0_pa_r ); + DECLARE_WRITE8_MEMBER( via0_pa_w ); + DECLARE_READ8_MEMBER( via0_pb_r ); + DECLARE_WRITE8_MEMBER( via0_pb_w ); + DECLARE_READ_LINE_MEMBER( via0_ca1_r ); + DECLARE_READ_LINE_MEMBER( via0_ca2_r ); + DECLARE_WRITE_LINE_MEMBER( via1_irq_w ); + DECLARE_READ8_MEMBER( via1_pb_r ); + DECLARE_WRITE8_MEMBER( via1_pb_w ); + DECLARE_WRITE_LINE_MEMBER( byte_w ); + + // optional information overrides + virtual const rom_entry *device_rom_region() const; + virtual machine_config_constructor device_mconfig_additions() const; + +protected: + // device-level overrides + virtual void device_config_complete() { m_shortname = "c2031"; } + virtual void device_start(); + virtual void device_reset(); + + // device_ieee488_interface overrides + virtual void ieee488_atn(int state); + virtual void ieee488_ifc(int state); + + inline int get_device_number(); + + required_device<cpu_device> m_maincpu; + required_device<via6522_device> m_via0; + required_device<via6522_device> m_via1; + required_device<c64h156_device> m_ga; + required_device<legacy_floppy_image_device> m_image; + + // IEEE-488 bus + int m_nrfd_out; // not ready for data + int m_ndac_out; // not data accepted + int m_atna; // attention acknowledge + + // interrupts + int m_via0_irq; // VIA #0 interrupt request + int m_via1_irq; // VIA #1 interrupt request +}; + + +// device type definition +extern const device_type C2031; + + + +#endif |