/***************************************************************************** * * includes/tx0.h * ****************************************************************************/ #ifndef TX0_H_ #define TX0_H_ enum state_t { MTS_UNSELECTED, MTS_SELECTING, MTS_SELECTED, MTS_UNSELECTING }; enum backspace_state_t { MTBSS_STATE0, MTBSS_STATE1, MTBSS_STATE2, MTBSS_STATE3, MTBSS_STATE4, MTBSS_STATE5, MTBSS_STATE6 }; enum state_2_t { MTRDS_STATE0, MTRDS_STATE1, MTRDS_STATE2, MTRDS_STATE3, MTRDS_STATE4, MTRDS_STATE5, MTRDS_STATE6 }; enum state_3_t { MTWTS_STATE0, MTWTS_STATE1, MTWTS_STATE2, MTWTS_STATE3 }; enum irg_pos_t { MTIRGP_START, MTIRGP_ENDMINUS1, MTIRGP_END }; /* tape reader registers */ typedef struct tape_reader_t { device_image_interface *fd; /* file descriptor of tape image */ int motor_on; /* 1-bit reader motor on */ int rcl; /* 1-bit reader clutch */ int rc; /* 2-bit reader counter */ emu_timer *timer; /* timer to simulate reader timing */ } tape_reader_t; /* tape puncher registers */ typedef struct tape_puncher_t { device_image_interface *fd; /* file descriptor of tape image */ emu_timer *timer; /* timer to generate completion pulses */ } tape_puncher_t; /* typewriter registers */ typedef struct typewriter_t { device_image_interface *fd; /* file descriptor of output image */ emu_timer *prt_timer;/* timer to generate completion pulses */ } typewriter_t; /* magnetic tape unit registers */ typedef struct magtape_t { device_image_interface *img; /* image descriptor */ state_t state; int command; int binary_flag; union { backspace_state_t backspace_state; struct { state_2_t state; int space_flag; } read; struct { state_3_t state; int counter; } write; } u; int sel_pending; int cpy_pending; irg_pos_t irg_pos; /* position relative to inter-record gap */ int long_parity; emu_timer *timer; /* timer to simulate reader timing */ } magtape_t; class tx0_state : public driver_device { public: tx0_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } tape_reader_t m_tape_reader; tape_puncher_t m_tape_puncher; typewriter_t m_typewriter; emu_timer *m_dis_timer; magtape_t m_magtape; int m_old_typewriter_keys[4]; int m_old_control_keys; int m_old_tsr_keys; int m_tsr_index; int m_typewriter_color; bitmap_ind16 m_panel_bitmap; bitmap_ind16 m_typewriter_bitmap; int m_pos; int m_case_shift; device_t *m_crt; DECLARE_DRIVER_INIT(tx0); }; /*----------- defined in video/tx0.c -----------*/ VIDEO_START( tx0 ); SCREEN_VBLANK( tx0 ); SCREEN_UPDATE_IND16( tx0 ); void tx0_plot(running_machine &machine, int x, int y); void tx0_typewriter_drawchar(running_machine &machine, int character); /* defines for each bit and mask in input port "CSW" */ enum { /* bit numbers */ tx0_control_bit = 0, tx0_stop_c0_bit = 1, tx0_stop_c1_bit = 2, tx0_gbl_cm_sel_bit = 3, tx0_stop_bit = 4, tx0_restart_bit = 5, tx0_read_in_bit = 6, tx0_toggle_dn_bit = 12, tx0_toggle_up_bit = 13, tx0_cm_sel_bit = 14, tx0_lr_sel_bit = 15, /* masks */ tx0_control = (1 << tx0_control_bit), tx0_stop_cyc0 = (1 << tx0_stop_c0_bit), tx0_stop_cyc1 = (1 << tx0_stop_c1_bit), tx0_gbl_cm_sel = (1 << tx0_gbl_cm_sel_bit), tx0_stop = (1 << tx0_stop_bit), tx0_restart = (1 << tx0_restart_bit), tx0_read_in = (1 << tx0_read_in_bit), tx0_toggle_dn = (1 << tx0_toggle_dn_bit), tx0_toggle_up = (1 << tx0_toggle_up_bit), tx0_cm_sel = (1 << tx0_cm_sel_bit), tx0_lr_sel = (1 << tx0_lr_sel_bit) }; /* defines for our font */ enum { tx0_charnum = /*96*/128, /* ASCII set + xx special characters */ /* for whatever reason, 96 breaks some characters */ tx0_fontdata_size = 8 * tx0_charnum }; enum { /* size and position of crt window */ crt_window_width = /*511*/512, crt_window_height = /*511*/512, crt_window_offset_x = 0, crt_window_offset_y = 0, /* size and position of operator control panel window */ panel_window_width = 272, panel_window_height = 264, panel_window_offset_x = crt_window_width, panel_window_offset_y = 0, /* size and position of typewriter window */ typewriter_window_width = 640, typewriter_window_height = 160, typewriter_window_offset_x = 0, typewriter_window_offset_y = crt_window_height }; enum { total_width = crt_window_width + panel_window_width, total_height = crt_window_height + typewriter_window_height, /* respect 4:3 aspect ratio to keep pixels square */ virtual_width_1 = ((total_width+3)/4)*4, virtual_height_1 = ((total_height+2)/3)*3, virtual_width_2 = virtual_height_1*4/3, virtual_height_2 = virtual_width_1*3/4, virtual_width = (virtual_width_1 > virtual_width_2) ? virtual_width_1 : virtual_width_2, virtual_height = (virtual_height_1 > virtual_height_2) ? virtual_height_1 : virtual_height_2 }; enum { /* refresh rate in Hz: can be changed at will */ refresh_rate = 60 }; /* Color codes */ enum { /* first pen_crt_num_levels colors used for CRT (with remanence) */ pen_crt_num_levels = 69, pen_crt_max_intensity = pen_crt_num_levels-1, /* next colors used for control panel and typewriter */ pen_black = pen_crt_num_levels, pen_white, pen_green, pen_dk_green, pen_red, pen_lt_gray, /* color constants for control panel */ pen_panel_bg = pen_black, pen_panel_caption = pen_white, color_panel_caption = 0, pen_switch_nut = pen_lt_gray, pen_switch_button = pen_white, pen_lit_lamp = pen_green, pen_unlit_lamp = pen_dk_green, /* color constants for typewriter */ pen_typewriter_bg = pen_white, color_typewriter_black = 1, /* palette 1 = black on white */ color_typewriter_red = 2, /* palette 2 = red on white */ /* color constants used for light pen */ pen_lightpen_nonpressed = pen_red, pen_lightpen_pressed = pen_green }; #endif /* TX0_H_ */