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// license:GPL-2.0+
// copyright-holders:Raphael Nabet
#include "sound/beep.h"
#define vdt911_chr_region ":gfx1"
enum
{
/* 10 bytes per character definition */
vdt911_single_char_len = 10,
vdt911_US_chr_offset = 0,
vdt911_UK_chr_offset = vdt911_US_chr_offset+128*vdt911_single_char_len,
vdt911_german_chr_offset = vdt911_UK_chr_offset+128*vdt911_single_char_len,
vdt911_swedish_chr_offset = vdt911_german_chr_offset+128*vdt911_single_char_len,
vdt911_norwegian_chr_offset = vdt911_swedish_chr_offset+128*vdt911_single_char_len,
vdt911_frenchWP_chr_offset = vdt911_norwegian_chr_offset+128*vdt911_single_char_len,
vdt911_japanese_chr_offset = vdt911_frenchWP_chr_offset+128*vdt911_single_char_len,
vdt911_chr_region_len = vdt911_japanese_chr_offset+256*vdt911_single_char_len
};
enum vdt911_screen_size_t { char_960 = 0, char_1920 };
enum vdt911_model_t
{
vdt911_model_US = 0,
vdt911_model_UK,
vdt911_model_French,
vdt911_model_German,
vdt911_model_Swedish, // Swedish/Finnish
vdt911_model_Norwegian, // Norwegian/Danish
vdt911_model_Japanese, // Katakana Japanese
/*vdt911_model_Arabic,*/ // Arabic
vdt911_model_FrenchWP // French word processing
};
class vdt911_device : public device_t
{
public:
vdt911_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER(cru_r);
DECLARE_WRITE8_MEMBER(cru_w);
DECLARE_PALETTE_INIT(vdt911);
template<class _Object> static devcb_base &static_set_keyint_callback(device_t &device, _Object object)
{
return downcast<vdt911_device &>(device).m_keyint_line.set_callback(object);
}
template<class _Object> static devcb_base &static_set_lineint_callback(device_t &device, _Object object)
{
return downcast<vdt911_device &>(device).m_lineint_line.set_callback(object);
}
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
protected:
// device-level overrides
void device_config_complete();
void device_start();
void device_reset();
machine_config_constructor device_mconfig_additions() const;
ioport_constructor device_input_ports() const;
void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
void refresh(bitmap_ind16 &bitmap, const rectangle &cliprect, int x, int y);
int get_refresh_rate();
void check_keyboard();
vdt911_screen_size_t m_screen_size; // char_960 for 960-char, 12-line model; char_1920 for 1920-char, 24-line model
vdt911_model_t m_model; // country code
UINT8 m_data_reg; // dt911 write buffer
UINT8 m_display_RAM[2048]; // vdt911 char buffer (1kbyte for 960-char model, 2kbytes for 1920-char model)
unsigned int m_cursor_address; // current cursor address (controlled by the computer, affects both display and I/O protocol)
unsigned int m_cursor_address_mask; // 1023 for 960-char model, 2047 for 1920-char model
emu_timer *m_beep_timer; // beep clock (beeps ends when timer times out)
emu_timer *m_blink_timer; // cursor blink clock
emu_timer *m_line_timer; // screen line timer
UINT8 m_keyboard_data; // last code pressed on keyboard
bool m_keyboard_data_ready; // true if there is a new code in keyboard_data
bool m_keyboard_interrupt_enable; // true when keybord interrupts are enabled
bool m_display_enable; // screen is black when false
bool m_dual_intensity_enable; // if true, MSBit of ASCII codes controls character highlight
bool m_display_cursor; // if true, the current cursor location is displayed on screen
bool m_blinking_cursor_enable; // if true, the cursor will blink when displayed
bool m_blink_state; // current cursor blink state
bool m_word_select; // CRU interface mode
bool m_previous_word_select; // value of word_select is saved here
UINT8 m_last_key_pressed;
int m_last_modifier_state;
char m_foreign_mode;
required_device<beep_device> m_beeper;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
devcb_write_line m_keyint_line;
devcb_write_line m_lineint_line;
};
extern const device_type VDT911;
#define MCFG_VDT911_KEYINT_HANDLER( _intcallb ) \
devcb = &vdt911_device::static_set_keyint_callback( *device, DEVCB_##_intcallb );
#define MCFG_VDT911_LINEINT_HANDLER( _intcallb ) \
devcb = &vdt911_device::static_set_lineint_callback( *device, DEVCB_##_intcallb );
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