mirror of
https://github.com/bradgrantham/apple2a.git
synced 2024-11-27 03:49:31 +00:00
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
#ifndef __RUNTIME_H__
|
|
#define __RUNTIME_H__
|
|
|
|
#include "platform.h"
|
|
|
|
// Line number used for "no line number".
|
|
#define INVALID_LINE_NUMBER 0xFFFF
|
|
|
|
// Maximum number of variables. These fit in the zero page.
|
|
#define MAX_VARIABLES 16
|
|
|
|
// Location of first variable in zero page. See zeropage.s and zeropage.inc
|
|
// in the compiler tree. They seem to use 26 bytes, so we start after that.
|
|
// Each variable takes two bytes (int16_t).
|
|
#define FIRST_VARIABLE 26
|
|
|
|
extern uint16_t g_cursor_x;
|
|
extern uint16_t g_cursor_y;
|
|
extern uint16_t g_showing_cursor;
|
|
extern uint8_t g_cursor_ch;
|
|
extern uint8_t g_variable_names[MAX_VARIABLES*2];
|
|
|
|
void initialize_runtime(void);
|
|
void clear_for_stack(void);
|
|
|
|
uint8_t *cursor_pos(void);
|
|
void show_cursor(void);
|
|
void hide_cursor(void);
|
|
void move_cursor(int16_t x, int16_t y);
|
|
|
|
void clear_to_eol(void);
|
|
|
|
void home(void);
|
|
|
|
void print(uint8_t *s);
|
|
void print_char(uint8_t c);
|
|
void print_int(uint16_t i);
|
|
void print_newline(void);
|
|
|
|
void for_statement(uint16_t line_number, uint16_t var_address, int16_t end_value, int16_t step,
|
|
uint16_t loop_top_addr);
|
|
uint16_t next_statement(uint16_t line_number, uint16_t var_address);
|
|
|
|
void syntax_error(uint16_t line_number);
|
|
void syntax_error_in_line(uint16_t line_number);
|
|
void undefined_statement_error(uint16_t line_number);
|
|
|
|
void gr_statement(void);
|
|
void text_statement(void);
|
|
void color_statement(uint16_t color);
|
|
void plot_statement(uint16_t x, uint16_t y);
|
|
|
|
#endif // __RUNTIME_H__
|