diff options
Diffstat (limited to 'src/devices/bus/cbmiec/c1571.h')
-rw-r--r-- | src/devices/bus/cbmiec/c1571.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/devices/bus/cbmiec/c1571.h b/src/devices/bus/cbmiec/c1571.h new file mode 100644 index 00000000000..6a938b73291 --- /dev/null +++ b/src/devices/bus/cbmiec/c1571.h @@ -0,0 +1,187 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + Commodore 1570/1571/1571CR Single Disk Drive emulation + +**********************************************************************/ + +#pragma once + +#ifndef __C1571__ +#define __C1571__ + +#include "emu.h" +#include "cbmiec.h" +#include "bus/c64/bn1541.h" +#include "cpu/m6502/m6502.h" +#include "machine/64h156.h" +#include "machine/6522via.h" +#include "bus/isa/isa.h" +#include "bus/isa/wd1002a_wx1.h" +#include "machine/mos6526.h" +#include "machine/wd_fdc.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + +#define C1571_TAG "c1571" + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> c1571_t + +class c1571_t : public device_t, + public device_cbm_iec_interface, + public device_c64_floppy_parallel_interface +{ +public: + // construction/destruction + c1571_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); + c1571_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_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_READ8_MEMBER( via1_r ); + DECLARE_WRITE8_MEMBER( via1_w ); + DECLARE_WRITE_LINE_MEMBER( via1_irq_w ); + DECLARE_READ8_MEMBER( via1_pb_r ); + DECLARE_WRITE8_MEMBER( via1_pb_w ); + + DECLARE_WRITE_LINE_MEMBER( cia_irq_w ); + DECLARE_WRITE_LINE_MEMBER( cia_pc_w ); + DECLARE_WRITE_LINE_MEMBER( cia_cnt_w ); + DECLARE_WRITE_LINE_MEMBER( cia_sp_w ); + DECLARE_READ8_MEMBER( cia_pb_r ); + DECLARE_WRITE8_MEMBER( cia_pb_w ); + + DECLARE_WRITE_LINE_MEMBER( byte_w ); + + DECLARE_WRITE_LINE_MEMBER( wpt_w ); + + DECLARE_FLOPPY_FORMATS( floppy_formats ); + + void wpt_callback(floppy_image_device *floppy, int state); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + + // device_cbm_iec_interface overrides + virtual void cbm_iec_srq(int state); + virtual void cbm_iec_atn(int state); + virtual void cbm_iec_data(int state); + virtual void cbm_iec_reset(int state); + + // device_c64_floppy_parallel_interface overrides + virtual void parallel_data_w(UINT8 data); + virtual void parallel_strobe_w(int state); + + enum + { + LED_POWER = 0, + LED_ACT + }; + + void update_iec(); + + required_device<cpu_device> m_maincpu; + required_device<via6522_device> m_via0; + required_device<via6522_device> m_via1; + required_device<mos6526_device> m_cia; + required_device<wd1770_t> m_fdc; + required_device<c64h156_device> m_ga; + required_device<floppy_image_device> m_floppy; + required_ioport m_address; + + // signals + int m_1_2mhz; // clock speed + + // IEC bus + int m_data_out; // serial data out + int m_ser_dir; // fast serial direction + int m_sp_out; // fast serial data out + int m_cnt_out; // fast serial clock out + + // interrupts + int m_via0_irq; // VIA #0 interrupt request + int m_via1_irq; // VIA #1 interrupt request + int m_cia_irq; // CIA interrupt request +}; + + +// ======================> c1570_t + +class c1570_t : public c1571_t +{ +public: + // construction/destruction + c1570_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; +}; + + +// ======================> c1571cr_t + +class c1571cr_t : public c1571_t +{ +public: + // construction/destruction + c1571cr_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_WRITE8_MEMBER( via0_pa_w ); + DECLARE_WRITE8_MEMBER( via0_pb_w ); +}; + + +// ======================> mini_chief_t + +class mini_chief_t : public c1571_t +{ +public: + // construction/destruction + mini_chief_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_READ8_MEMBER( cia_pa_r ); + DECLARE_WRITE8_MEMBER( cia_pa_w ); + DECLARE_WRITE8_MEMBER( cia_pb_w ); +}; + + +// device type definition +extern const device_type C1570; +extern const device_type C1571; +extern const device_type C1571CR; +extern const device_type MINI_CHIEF; + + + +#endif |