fonts.h
#ifndef __RAD1O_FONTS_H__
#define __RAD1O_FONTS_H__

#include <stdint.h>

/* Partially based on original code for the KS0108 by Stephane Rey */
/* Based on code code by Kevin Townsend */

typedef struct {
	const uint8_t widthBits; // width, in bits (or pixels), of the character
} FONT_CHAR_INFO;

struct FONT_DEF {
	uint8_t u8Width;                /* Character width for storage          */
	uint8_t u8Height;               /* Character height for storage         */
	uint8_t u8FirstChar;            /* The first character available        */
	uint8_t u8LastChar;             /* The last character available         */
	const uint8_t* au8FontTable;    /* Font table start address in memory   */
	const FONT_CHAR_INFO* charInfo; /* Pointer to array of char information */
	const uint16_t* charExtra;      /* Pointer to array of extra char info  */
};

struct EXTFONT {
	uint8_t type; // 0: none, 1: static, 2: loaded
	char name[13];
	struct FONT_DEF def;
};

typedef const struct FONT_DEF* FONT;

#define FONT_DEFAULT  0
#define FONT_INTERNAL 1
#define FONT_EXTERNAL 2

#endif