// license:BSD-3-Clause
// copyright-holders:Peter Trauner
/***************************************************************************
MOS 6560/6561 Video Interface Chip (VIC) emulation
****************************************************************************
_____ _____
N/C 1 |* \_/ | 40 Vdd
CHROMA 2 | | 39 phi1
LUMA/SYNC 3 | | 38 phi2
R/W 4 | | 37 OPTION
D11 5 | | 36 Pphi2
D10 6 | | 35 Pphi1
D9 7 | | 34 A13
D8 8 | | 33 A12
D7 9 | | 32 A11
D6 10 | MOS6560 | 31 A10
D5 11 | MOS6561 | 30 A9
D4 12 | | 29 A8
D3 13 | | 28 A7
D2 14 | | 27 A6
D1 15 | | 26 A5
D0 16 | | 25 A4
POT X 17 | | 24 A3
POT Y 18 | | 23 A2
AUDIO 19 | | 22 A1
Vss 20 |_____________| 21 A0
***************************************************************************/
#pragma once
#ifndef __MOS6560__
#define __MOS6560__
#include "emu.h"
//***************************************************************************
// DEVICE CONFIGURATION MACROS
//***************************************************************************
#define MCFG_MOS6560_ADD(_tag, _screen_tag, _clock, _videoram_map, _colorram_map) \
MCFG_SCREEN_ADD(_screen_tag, RASTER) \
MCFG_SCREEN_REFRESH_RATE(MOS6560_VRETRACERATE) \
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) \
MCFG_SCREEN_SIZE((MOS6560_XSIZE + 7) & ~7, MOS6560_YSIZE) \
MCFG_SCREEN_VISIBLE_AREA(MOS6560_MAME_XPOS, MOS6560_MAME_XPOS + MOS6560_MAME_XSIZE - 1, MOS6560_MAME_YPOS, MOS6560_MAME_YPOS + MOS6560_MAME_YSIZE - 1) \
MCFG_SCREEN_UPDATE_DEVICE(_tag, mos6560_device, screen_update) \
MCFG_SOUND_ADD(_tag, MOS6560, _clock) \
MCFG_VIDEO_SET_SCREEN(_screen_tag) \
MCFG_DEVICE_ADDRESS_MAP(AS_0, _videoram_map) \
MCFG_DEVICE_ADDRESS_MAP(AS_1, _colorram_map)
#define MCFG_MOS6561_ADD(_tag, _screen_tag, _clock, _videoram_map, _colorram_map) \
MCFG_SCREEN_ADD(_screen_tag, RASTER) \
MCFG_SCREEN_REFRESH_RATE(MOS6561_VRETRACERATE) \
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) \
MCFG_SCREEN_SIZE((MOS6561_XSIZE + 7) & ~7, MOS6561_YSIZE) \
MCFG_SCREEN_VISIBLE_AREA(MOS6561_MAME_XPOS, MOS6561_MAME_XPOS + MOS6561_MAME_XSIZE - 1, MOS6561_MAME_YPOS, MOS6561_MAME_YPOS + MOS6561_MAME_YSIZE - 1) \
MCFG_SCREEN_UPDATE_DEVICE(_tag, mos6560_device, screen_update) \
MCFG_SOUND_ADD(_tag, MOS6561, _clock) \
MCFG_VIDEO_SET_SCREEN(_screen_tag) \
MCFG_DEVICE_ADDRESS_MAP(AS_0, _videoram_map) \
MCFG_DEVICE_ADDRESS_MAP(AS_1, _colorram_map)
#define MCFG_MOS656X_ATTACK_UFO_ADD(_tag, _screen_tag, _clock, _videoram_map, _colorram_map) \
MCFG_SCREEN_ADD(_screen_tag, RASTER) \
MCFG_SCREEN_REFRESH_RATE(MOS6560_VRETRACERATE) \
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) \
MCFG_SCREEN_SIZE((MOS6560_XSIZE + 7) & ~7, MOS6560_YSIZE) \
MCFG_SCREEN_VISIBLE_AREA(0, 23*8 - 1, 0, 22*8 - 1) \
MCFG_SCREEN_UPDATE_DEVICE(_tag, mos6560_device, screen_update) \
MCFG_SOUND_ADD(_tag, MOS656X_ATTACK_UFO, _clock) \
MCFG_VIDEO_SET_SCREEN(_screen_tag) \
MCFG_DEVICE_ADDRESS_MAP(AS_0, _videoram_map) \
MCFG_DEVICE_ADDRESS_MAP(AS_1, _colorram_map)
#define MCFG_MOS6560_POTX_CALLBACK(_read) \
devcb = &mos6560_device::set_potx_rd_callback(*device, DEVCB_##_read);
#define MCFG_MOS6560_POTY_CALLBACK(_read) \
devcb = &mos6560_device::set_poty_rd_callback(*device, DEVCB_##_read);
//**************************************************************************
// MACROS / CONSTANTS
//**************************************************************************
#define MOS6560_VRETRACERATE 60
#define MOS6561_VRETRACERATE 50
#define MOS6560_MAME_XPOS 4 /* xleft not displayed */
#define MOS6560_MAME_YPOS 10 /* y up not displayed */
#define MOS6561_MAME_XPOS 20
#define MOS6561_MAME_YPOS 10
#define MOS6560_MAME_XSIZE 200
#define MOS6560_MAME_YSIZE 248
#define MOS6561_MAME_XSIZE 224
#define MOS6561_MAME_YSIZE 296
/* real values */
#define MOS6560_LINES 261
#define MOS6561_LINES 312
#define MOS6560_XSIZE (4+201) /* 4 left not visible */
#define MOS6560_YSIZE (10+251) /* 10 not visible */
/* cycles 65 */
#define MOS6561_XSIZE (20+229) /* 20 left not visible */
#define MOS6561_YSIZE (10+302) /* 10 not visible */
/* cycles 71 */
/* the following values depend on the VIC clock,
* but to achieve TV-frequency the clock must have a fix frequency */
#define MOS6560_CLOCK (14318181/14)
#define MOS6561_CLOCK (4433618/4)
//***************************************************************************
// TYPE DEFINITIONS
//***************************************************************************
// ======================> mos6560_device
class mos6560_device : public device_t,
public device_memory_interface,
public device_sound_interface,
public device_video_interface
{
public:
mos6560_device(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);
mos6560_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
template<class _Object> static devcb_base &set_potx_rd_callback(device_t &device, _Object object) { return downcast<mos6560_device &>(device).m_read_potx.set_callback(object); }
template<class _Object> static devcb_base &set_poty_rd_callback(device_t &device, _Object object) { return downcast<mos6560_device &>(device).m_read_poty.set_callback(object); }
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const override;
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
UINT8 bus_r();
DECLARE_WRITE_LINE_MEMBER( lp_w );
UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
protected:
enum
{
TYPE_6560, // NTSC-M
TYPE_6561, // PAL-B
TYPE_ATTACK_UFO // NTSC-M, less features
};
enum
{
TIMER_LINE
};
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
inline UINT8 read_videoram(offs_t offset);
inline UINT8 read_colorram(offs_t offset);
void draw_character( int ybegin, int yend, int ch, int yoff, int xoff, UINT16 *color );
void draw_character_multi( int ybegin, int yend, int ch, int yoff, int xoff, UINT16 *color );
void drawlines( int first, int last );
void soundport_w( int offset, int data );
void sound_start();
void raster_interrupt_gen();
int m_variant;
const address_space_config m_videoram_space_config;
const address_space_config m_colorram_space_config;
devcb_read8 m_read_potx;
devcb_read8 m_read_poty;
UINT8 m_reg[16];
bitmap_rgb32 m_bitmap;
int m_rasterline, m_lastline;
double m_lightpenreadtime;
int m_charheight, m_matrix8x16, m_inverted;
int m_chars_x, m_chars_y;
int m_xsize, m_ysize, m_xpos, m_ypos;
int m_chargenaddr, m_videoaddr;
/* values in videoformat */
UINT16 m_backgroundcolor, m_framecolor, m_helpercolor;
/* arrays for bit to color conversion without condition checking */
UINT16 m_mono[2], m_monoinverted[2], m_multi[4], m_multiinverted[4];
/* video chip settings */
int m_total_xsize, m_total_ysize, m_total_lines, m_total_vretracerate;
/* DMA */
UINT8 m_last_data;
/* sound part */
int m_tone1pos, m_tone2pos, m_tone3pos,
m_tonesize, m_tone1samples, m_tone2samples, m_tone3samples,
m_noisesize, /* number of samples */
m_noisepos, /* pos of tone */
m_noisesamples; /* count of samples to give out per tone */
sound_stream *m_channel;
std::unique_ptr<INT16[]> m_tone;
std::unique_ptr<INT8[]> m_noise;
emu_timer *m_line_timer;
};
// ======================> mos6561_device
class mos6561_device : public mos6560_device
{
public:
// construction/destruction
mos6561_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
// ======================> mos656x_attack_ufo_device
class mos656x_attack_ufo_device : public mos6560_device
{
public:
// construction/destruction
mos656x_attack_ufo_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
// device type definitions
extern const device_type MOS6560;
extern const device_type MOS6561;
extern const device_type MOS656X_ATTACK_UFO;
#endif