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/*****************************************************************************
*
* includes/pcw.h
*
****************************************************************************/
#ifndef PCW_H_
#define PCW_H_
#define PCW_BORDER_HEIGHT 8
#define PCW_BORDER_WIDTH 8
#define PCW_NUM_COLOURS 2
#define PCW_DISPLAY_WIDTH 720
#define PCW_DISPLAY_HEIGHT 256
#define PCW_SCREEN_WIDTH (PCW_DISPLAY_WIDTH + (PCW_BORDER_WIDTH<<1))
#define PCW_SCREEN_HEIGHT (PCW_DISPLAY_HEIGHT + (PCW_BORDER_HEIGHT<<1))
#define PCW_PRINTER_WIDTH (80*16)
#define PCW_PRINTER_HEIGHT (20*16)
class pcw_state : public driver_device
{
public:
pcw_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
int m_boot;
int m_system_status;
int m_fdc_interrupt_code;
int m_interrupt_counter;
UINT8 m_banks[4];
unsigned char m_bank_force;
UINT8 m_timer_irq_flag;
UINT8 m_nmi_flag;
UINT8 m_printer_command;
UINT8 m_printer_data;
UINT8 m_printer_status;
INT16 m_printer_headpos;
UINT16 m_kb_scan_row;
UINT8 m_mcu_keyboard_data[16];
UINT8 m_mcu_transmit_reset_seq;
UINT8 m_mcu_transmit_count;
UINT8 m_mcu_selected;
UINT8 m_mcu_buffer;
UINT8 m_mcu_prev;
unsigned int m_roller_ram_addr;
unsigned short m_roller_ram_offset;
unsigned char m_vdu_video_control_register;
UINT8 m_printer_serial; // value if shift/store data pin
UINT8 m_printer_shift; // state of shift register
UINT8 m_printer_shift_output; // output presented to the paper feed motor and print head motor
UINT8 m_head_motor_state;
UINT8 m_linefeed_motor_state;
UINT16 m_printer_pins;
UINT8 m_printer_p2; // MCU port P2 state
UINT32 m_paper_feed; // amount of paper fed through printer, by n/360 inches. One line feed is 61/360in (from the linefeed command in CP/M;s ptr menu)
bitmap_ind16* m_prn_output;
UINT8 m_printer_p2_prev;
emu_timer* m_prn_stepper;
emu_timer* m_prn_pins;
DECLARE_READ8_MEMBER(pcw_keyboard_r);
DECLARE_READ8_MEMBER(pcw_keyboard_data_r);
DECLARE_READ8_MEMBER(pcw_interrupt_counter_r);
DECLARE_WRITE8_MEMBER(pcw_bank_select_w);
DECLARE_WRITE8_MEMBER(pcw_bank_force_selection_w);
DECLARE_WRITE8_MEMBER(pcw_roller_ram_addr_w);
DECLARE_WRITE8_MEMBER(pcw_pointer_table_top_scan_w);
DECLARE_WRITE8_MEMBER(pcw_vdu_video_control_register_w);
DECLARE_WRITE8_MEMBER(pcw_system_control_w);
DECLARE_READ8_MEMBER(pcw_system_status_r);
DECLARE_READ8_MEMBER(pcw_expansion_r);
DECLARE_WRITE8_MEMBER(pcw_expansion_w);
DECLARE_READ8_MEMBER(pcw_fdc_r);
DECLARE_WRITE8_MEMBER(pcw_fdc_w);
DECLARE_WRITE8_MEMBER(pcw_printer_data_w);
DECLARE_WRITE8_MEMBER(pcw_printer_command_w);
DECLARE_READ8_MEMBER(pcw_printer_data_r);
DECLARE_READ8_MEMBER(pcw_printer_status_r);
DECLARE_READ8_MEMBER(mcu_printer_p1_r);
DECLARE_WRITE8_MEMBER(mcu_printer_p1_w);
DECLARE_READ8_MEMBER(mcu_printer_p2_r);
DECLARE_WRITE8_MEMBER(mcu_printer_p2_w);
DECLARE_READ8_MEMBER(mcu_printer_t1_r);
DECLARE_READ8_MEMBER(mcu_printer_t0_r);
DECLARE_READ8_MEMBER(mcu_kb_scan_r);
DECLARE_WRITE8_MEMBER(mcu_kb_scan_w);
DECLARE_READ8_MEMBER(mcu_kb_scan_high_r);
DECLARE_WRITE8_MEMBER(mcu_kb_scan_high_w);
DECLARE_READ8_MEMBER(mcu_kb_data_r);
DECLARE_READ8_MEMBER(mcu_kb_t1_r);
DECLARE_READ8_MEMBER(mcu_kb_t0_r);
DECLARE_READ8_MEMBER(pcw9512_parallel_r);
DECLARE_WRITE8_MEMBER(pcw9512_parallel_w);
void mcu_transmit_serial(UINT8 bit);
DECLARE_DRIVER_INIT(pcw);
virtual void machine_start();
virtual void machine_reset();
virtual void video_start();
virtual void palette_init();
UINT32 screen_update_pcw(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
UINT32 screen_update_pcw_printer(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
};
#endif /* PCW_H_ */
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