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Diffstat (limited to 'src/devices/bus/ieee488/d9060.h')
-rw-r--r-- | src/devices/bus/ieee488/d9060.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/devices/bus/ieee488/d9060.h b/src/devices/bus/ieee488/d9060.h new file mode 100644 index 00000000000..7efc20006cf --- /dev/null +++ b/src/devices/bus/ieee488/d9060.h @@ -0,0 +1,122 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Commodore D9060/D9090 Hard Disk Drive emulation + +**********************************************************************/ + +#pragma once + +#ifndef __D9060__ +#define __D9060__ + +#include "emu.h" +#include "ieee488.h" +#include "cpu/m6502/m6502.h" +#include "machine/6522via.h" +#include "machine/mos6530n.h" +#include "bus/scsi/scsi.h" + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + + +// ======================> d9060_base_t + +class d9060_base_t : public device_t, + public device_ieee488_interface +{ +public: + enum + { + TYPE_9060, + TYPE_9090 + }; + + // construction/destruction + d9060_base_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, UINT32 variant, const char *shortname, const char *source); + + // 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; + + // not really public + 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_READ8_MEMBER( via_pb_r ); + DECLARE_WRITE8_MEMBER( via_pb_w ); + DECLARE_WRITE_LINE_MEMBER( ack_w ); + DECLARE_WRITE_LINE_MEMBER( enable_w ); + DECLARE_WRITE8_MEMBER( scsi_data_w ); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + + // device_ieee488_interface overrides + void ieee488_atn(int state); + void ieee488_ifc(int state); + +private: + inline void update_ieee_signals(); + + required_device<cpu_device> m_maincpu; + required_device<cpu_device> m_hdccpu; + required_device<mos6532_t> m_riot0; + required_device<mos6532_t> m_riot1; + required_device<via6522_device> m_via; + required_device<SCSI_PORT_DEVICE> m_sasibus; + required_device<output_latch_device> m_sasi_data_out; + 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; + + // SASI bus + int m_enable; + UINT8 m_data; + + int m_variant; +}; + + +// ======================> d9060_t + +class d9060_t : public d9060_base_t +{ +public: + // construction/destruction + d9060_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); +}; + + +// ======================> d9090_t + +class d9090_t : public d9060_base_t +{ +public: + // construction/destruction + d9090_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); +}; + + +// device type definition +extern const device_type D9060; +extern const device_type D9090; + + + +#endif |