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Diffstat (limited to 'src/mess/includes/z80ne.h')
-rw-r--r-- | src/mess/includes/z80ne.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/mess/includes/z80ne.h b/src/mess/includes/z80ne.h new file mode 100644 index 00000000000..538656a3027 --- /dev/null +++ b/src/mess/includes/z80ne.h @@ -0,0 +1,122 @@ +/***************************************************************************** + * + * includes/z80ne.h + * + * Nuova Elettronica Z80NE + * + * http://www.z80ne.com/ + * + ****************************************************************************/ + +#ifndef Z80NE_H_ +#define Z80NE_H_ + +#include "video/mc6847.h" + + +/*************************************************************************** + CONSTANTS +***************************************************************************/ + +#define Z80NE_CPU_SPEED_HZ 1920000 /* 1.92 MHz */ + +#define LX383_KEYS 16 +#define LX383_DOWNSAMPLING 16 + +#define LX385_TAPE_SAMPLE_FREQ 38400 + +/* wave duration threshold */ +typedef enum +{ + TAPE_300BPS = 300, /* 300 bps */ + TAPE_600BPS = 600, /* 600 bps */ + TAPE_1200BPS = 1200 /* 1200 bps */ +} z80netape_speed; + +typedef struct { + struct { + int length; /* time cassette level is at input.level */ + int level; /* cassette level */ + int bit; /* bit being read */ + } input; + struct { + int length; /* time cassette level is at output.level */ + int level; /* cassette level */ + int bit; /* bit to to output */ + } output; + z80netape_speed speed; /* 300 - 600 - 1200 */ + int wave_filter; + int wave_length; + int wave_short; + int wave_long; +} cass_data_t; + +typedef struct { + int drq; + int intrq; + UINT8 drive; /* current drive */ + UINT8 head; /* current head */ +} wd17xx_state_t; + + +class z80ne_state : public driver_device +{ +public: + z80ne_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_vdg(*this, "mc6847"), + m_videoram(*this,"videoram") {} + + optional_device<mc6847_base_device> m_vdg; + optional_shared_ptr<UINT8> m_videoram; + UINT8 m_lx383_scan_counter; + UINT8 m_lx383_key[LX383_KEYS]; + int m_lx383_downsampler; + int m_nmi_delay_counter; + int m_reset_delay_counter; + device_t *m_ay31015; + UINT8 m_lx385_ctrl; + device_t *m_lx388_kr2376; + emu_timer *m_cassette_timer; + cass_data_t m_cass_data; + wd17xx_state_t m_wd17xx_state; + DECLARE_READ8_MEMBER(lx383_r); + DECLARE_WRITE8_MEMBER(lx383_w); + DECLARE_READ8_MEMBER(lx385_data_r); + DECLARE_READ8_MEMBER(lx385_ctrl_r); + DECLARE_WRITE8_MEMBER(lx385_data_w); + DECLARE_WRITE8_MEMBER(lx385_ctrl_w); + DECLARE_READ8_MEMBER(lx388_data_r); + DECLARE_READ8_MEMBER(lx388_read_field_sync); + DECLARE_DIRECT_UPDATE_MEMBER(z80ne_default); + DECLARE_DIRECT_UPDATE_MEMBER(z80ne_nmi_delay_count); + DECLARE_DIRECT_UPDATE_MEMBER(z80ne_reset_delay_count); + DECLARE_DRIVER_INIT(z80netf); + DECLARE_DRIVER_INIT(z80net); + DECLARE_DRIVER_INIT(z80netb); + DECLARE_DRIVER_INIT(z80ne); +}; + + +/*----------- defined in machine/z80ne.c -----------*/ + +READ8_DEVICE_HANDLER(lx388_mc6847_videoram_r); +READ8_DEVICE_HANDLER(lx390_fdc_r); +WRITE8_DEVICE_HANDLER(lx390_fdc_w); +READ8_DEVICE_HANDLER(lx390_reset_bank); +WRITE8_DEVICE_HANDLER(lx390_motor_w); + + +MACHINE_RESET(z80ne); +MACHINE_RESET(z80net); +MACHINE_RESET(z80netb); +MACHINE_RESET(z80netf); +MACHINE_START(z80ne); +MACHINE_START(z80net); +MACHINE_START(z80netb); +MACHINE_START(z80netf); + +INPUT_CHANGED(z80ne_reset); +INPUT_CHANGED(z80ne_nmi); + +#endif /* Z80NE_H_ */ |