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40 lines
947 B
C
40 lines
947 B
C
#ifndef __RUNTIME_H__
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#define __RUNTIME_H__
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#include "platform.h"
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// Maximum number of variables. These fit in the zero page.
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#define MAX_VARIABLES 16
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// Location of first variable in zero page. See zeropage.s and zeropage.inc
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// in the compiler tree. They seem to use 26 bytes, so we start after that.
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// Each variable takes two bytes (int16_t).
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#define FIRST_VARIABLE 26
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extern uint16_t g_cursor_x;
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extern uint16_t g_cursor_y;
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extern uint16_t g_showing_cursor;
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extern uint8_t g_cursor_ch;
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extern uint8_t g_variable_names[MAX_VARIABLES*2];
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void clear_variable_values(void);
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uint8_t *cursor_pos(void);
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void show_cursor(void);
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void hide_cursor(void);
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void move_cursor(int16_t x, int16_t y);
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void clear_to_eol(void);
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void home(void);
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void print(uint8_t *s);
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void print_char(uint8_t c);
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void print_int(uint16_t i);
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void print_newline(void);
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void syntax_error(void);
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void syntax_error_in_line(uint16_t line_number);
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#endif // __RUNTIME_H__
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