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Ensures all 6560 properties have a valid default value.

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Thomas Harte 2020-09-16 17:24:18 -04:00
parent b1aefbfe85
commit bb57f0bcc7
1 changed files with 21 additions and 21 deletions
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42
Components/6560/6560.hpp
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@ -445,20 +445,20 @@ template <class BusHandler> class MOS6560 {
// register state // register state
struct { struct {
bool interlaced = false, tall_characters = false; bool interlaced = false, tall_characters = false;
uint8_t first_column_location, first_row_location; uint8_t first_column_location = 0, first_row_location = 0;
uint8_t number_of_columns, number_of_rows; uint8_t number_of_columns = 0, number_of_rows = 0;
uint16_t character_cell_start_address, video_matrix_start_address; uint16_t character_cell_start_address = 0, video_matrix_start_address = 0;
uint16_t backgroundColour, borderColour, auxiliary_colour; uint16_t backgroundColour = 0, borderColour = 0, auxiliary_colour = 0;
bool invertedCells = false; bool invertedCells = false;
uint8_t direct_values[16]; uint8_t direct_values[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
} registers_; } registers_;
// output state // output state
enum State { enum State {
Sync, ColourBurst, Border, Pixels Sync, ColourBurst, Border, Pixels
} this_state_, output_state_; } this_state_ = State::Sync, output_state_ = State::Sync;
int cycles_in_state_; int cycles_in_state_ = 0;
// counters that cover an entire field // counters that cover an entire field
int horizontal_counter_ = 0, vertical_counter_ = 0; int horizontal_counter_ = 0, vertical_counter_ = 0;
@ -487,23 +487,23 @@ template <class BusHandler> class MOS6560 {
// latches dictating start and length of drawing // latches dictating start and length of drawing
bool vertical_drawing_latch_ = false, horizontal_drawing_latch_ = false; bool vertical_drawing_latch_ = false, horizontal_drawing_latch_ = false;
int rows_this_field_, columns_this_line_; int rows_this_field_ = 0, columns_this_line_ = 0;
// current drawing position counter // current drawing position counter
int pixel_line_cycle_, column_counter_; int pixel_line_cycle_ = 0, column_counter_ = 0;
int current_row_; int current_row_ = 0;
uint16_t current_character_row_; uint16_t current_character_row_ = 0;
uint16_t video_matrix_address_counter_, base_video_matrix_address_counter_; uint16_t video_matrix_address_counter_ = 0, base_video_matrix_address_counter_ = 0;
// data latched from the bus // data latched from the bus
uint8_t character_code_, character_colour_, character_value_; uint8_t character_code_ = 0, character_colour_ = 0, character_value_ = 0;
bool is_odd_frame_ = false, is_odd_line_ = false; bool is_odd_frame_ = false, is_odd_line_ = false;
// lookup table from 6560 colour index to appropriate PAL/NTSC value // lookup table from 6560 colour index to appropriate PAL/NTSC value
uint16_t colours_[16]; uint16_t colours_[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
uint16_t *pixel_pointer; uint16_t *pixel_pointer = nullptr;
void output_border(int number_of_cycles) { void output_border(int number_of_cycles) {
uint16_t *colour_pointer = reinterpret_cast<uint16_t *>(crt_.begin_data(1)); uint16_t *colour_pointer = reinterpret_cast<uint16_t *>(crt_.begin_data(1));
if(colour_pointer) *colour_pointer = registers_.borderColour; if(colour_pointer) *colour_pointer = registers_.borderColour;
@ -511,13 +511,13 @@ template <class BusHandler> class MOS6560 {
} }
struct { struct {
int cycles_per_line; int cycles_per_line = 0;
int line_counter_increment_offset; int line_counter_increment_offset = 0;
int final_line_increment_position; int final_line_increment_position = 0;
int lines_per_progressive_field; int lines_per_progressive_field = 0;
bool supports_interlacing; bool supports_interlacing = 0;
} timing_; } timing_;
OutputMode output_mode_; OutputMode output_mode_ = OutputMode::NTSC;
}; };
} }