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Diffstat (limited to 'src/devices/bus/ieee488/c2040.h')
-rw-r--r-- | src/devices/bus/ieee488/c2040.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/devices/bus/ieee488/c2040.h b/src/devices/bus/ieee488/c2040.h new file mode 100644 index 00000000000..1618a46599f --- /dev/null +++ b/src/devices/bus/ieee488/c2040.h @@ -0,0 +1,133 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Commodore 2040/3040/4040 Disk Drive emulation + +**********************************************************************/ + +#pragma once + +#ifndef __C2040__ +#define __C2040__ + +#include "emu.h" +#include "ieee488.h" +#include "c2040fdc.h" +#include "cpu/m6502/m6502.h" +#include "cpu/m6502/m6504.h" +#include "machine/6522via.h" +#include "machine/mos6530n.h" + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> c2040_t + +class c2040_t : public device_t, + public device_ieee488_interface +{ +public: + // construction/destruction + c2040_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source); + c2040_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // optional information overrides + virtual const rom_entry *device_rom_region() const; + virtual machine_config_constructor device_mconfig_additions() const; + virtual ioport_constructor device_input_ports() const; + + DECLARE_READ8_MEMBER( dio_r ); + DECLARE_WRITE8_MEMBER( dio_w ); + DECLARE_READ8_MEMBER( riot1_pa_r ); + DECLARE_WRITE8_MEMBER( riot1_pa_w ); + DECLARE_READ8_MEMBER( riot1_pb_r ); + DECLARE_WRITE8_MEMBER( riot1_pb_w ); + DECLARE_WRITE8_MEMBER( via_pb_w ); + DECLARE_WRITE_LINE_MEMBER( mode_sel_w ); + DECLARE_WRITE_LINE_MEMBER( rw_sel_w ); + + DECLARE_FLOPPY_FORMATS( floppy_formats ); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + + // device_ieee488_interface overrides + virtual void ieee488_atn(int state); + virtual void ieee488_ifc(int state); + + enum + { + LED_POWER = 0, + LED_ACT0, + LED_ACT1, + LED_ERR + }; + + inline void update_ieee_signals(); + + required_device<m6502_device> m_maincpu; + required_device<m6504_device> m_fdccpu; + required_device<mos6532_t> m_riot0; + required_device<mos6532_t> m_riot1; + required_device<mos6530_t> m_miot; + required_device<via6522_device> m_via; + required_device<floppy_image_device> m_floppy0; + optional_device<floppy_image_device> m_floppy1; + required_device<c2040_fdc_t> m_fdc; + required_memory_region m_gcr; + required_ioport m_address; + + // IEEE-488 bus + int m_rfdo; // not ready for data output + int m_daco; // not data accepted output + int m_atna; // attention acknowledge + int m_ifc; +}; + + +// ======================> c3040_t + +class c3040_t : public c2040_t +{ +public: + // construction/destruction + c3040_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // optional information overrides + virtual const rom_entry *device_rom_region() const; + virtual machine_config_constructor device_mconfig_additions() const; + + DECLARE_FLOPPY_FORMATS( floppy_formats ); +}; + + +// ======================> c4040_t + +class c4040_t : public c2040_t +{ +public: + // construction/destruction + c4040_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // optional information overrides + virtual const rom_entry *device_rom_region() const; + virtual machine_config_constructor device_mconfig_additions() const; + + DECLARE_FLOPPY_FORMATS( floppy_formats ); +}; + + +// device type definition +extern const device_type C2040; +extern const device_type C3040; +extern const device_type C4040; + + + +#endif |