Codici caratteri ASCII per display

[Zhong]

Buonasera,
per chi avesse bisogno dei codici esadecimali del font 9x16 ASCII lascio qui un piccolo programma scritto in C con la matrice dei caratteri. Il primo dbyte (16bit) e' la colonna verticale di 16 pixel gli altri 9 dbyte le 9 colonne. Il programma funziona anche con il compilatore online in modo testo.

/*
 *  C-Linux
 *
 *  gcc program.c -lm
 *
 *  execute with :
 *
 *  ./a.out
 */

# include <stdio.h>
# include <stdlib.h>
# include <math.h>

# define NOT !
# define OR ||
# define AND &&
# define TRUE 1
# define FALSE 0

// ASCII font 9x16 pixels of 256 characters
// each number = 16 bits = 16 vertical pixels
unsigned int font0[2500] =
{ 0X0,0X0,0X0,0X0,0X0,0X0,0X0,0X0,0X0,
  0X1FE0,0X2010,0X2910,0X2190,0X2190,0X2910,0X2010,0X1FE0,0X0,
  0X1FE0,0X3FF0,0X36F0,0X3E70,0X3E70,0X36F0,0X3FF0,0X1FE0,0X0,
  0X780,0XFC0,0XFE0,0X7F0,0XFE0,0XFC0,0X780,0X0,0X0,
  0X100,0X380,0X7C0,0XFE0,0X7C0,0X380,0X100,0X0,0X0,
  0X380,0X380,0XF90,0X1C70,0X1C70,0XF90,0X380,0X380,0X0,
  0X300,0X780,0XF90,0X1FF0,0X1FF0,0XF90,0X780,0X300,0X0,
  0X0,0X0,0X180,0X3C0,0X3C0,0X180,0X0,0X0,0X0,
  0XFFFF,0XFFFF,0XFE7F,0XFC3F,0XFC3F,0XFE7F,0XFFFF,0XFFFF,0X0,
  0X0,0X3C0,0X660,0X420,0X420,0X660,0X3C0,0X0,0X0,
  0XFFFF,0XFC3F,0XF99F,0XFBDF,0XFBDF,0XF99F,0XFC3F,0XFFFF,0X0,
  0X1E0,0X3F0,0X610,0X2E10,0X3BF0,0X31E0,0X3C00,0X0,0X0,
  0X0,0X1E40,0X3F40,0X21F0,0X21F0,0X3F40,0X1E40,0X0,0X0,
  0X30,0X70,0X3FF0,0X3FE0,0X2800,0X2800,0X3800,0X3800,0X0,
  0X38,0X3FF8,0X3FF0,0X2800,0X2800,0X2870,0X3FF0,0X3FE0,0X0,
  0X540,0X540,0X380,0X1EF0,0X1EF0,0X380,0X540,0X540,0X0,
  0X7FF0,0X3FE0,0X1FC0,0XF80,0X700,0X200,0X200,0X0,0X0,
  0X200,0X200,0X700,0XF80,0X1FC0,0X3FE0,0X7FF0,0X0,0X0,
  0X0,0X880,0X18C0,0X3FE0,0X3FE0,0X18C0,0X880,0X0,0X0,
  0X0,0X3FB0,0X3FB0,0X0,0X0,0X3FB0,0X3FB0,0X0,0X0,
  0X1C00,0X3E00,0X2200,0X3FF0,0X3FF0,0X2000,0X3FF0,0X3FF0,0X0,
  0X2310,0X7798,0X5CC8,0X4848,0X4CE8,0X67B8,0X2310,0X0,0X0,
  0XF0,0XF0,0XF0,0XF0,0XF0,0XF0,0XF0,0X0,0X0,
  0X0,0X890,0X18D0,0X3FF0,0X3FF0,0X18D0,0X890,0X0,0X0,
  0X0,0X800,0X1800,0X3FF0,0X3FF0,0X1800,0X800,0X0,0X0,
  0X0,0X40,0X60,0X3FF0,0X3FF0,0X60,0X40,0X0,0X0,
  0X100,0X100,0X100,0X540,0X7C0,0X380,0X100,0X0,0X0,
  0X100,0X380,0X7C0,0X540,0X100,0X100,0X100,0X0,0X0,
  0X3C0,0X3C0,0X40,0X40,0X40,0X40,0X40,0X0,0X0,
  0X100,0X380,0X7C0,0X100,0X100,0X7C0,0X380,0X100,0X0,
  0X60,0X1E0,0X7E0,0XFE0,0X7E0,0X1E0,0X60,0X0,0X0,
  0XC00,0XF00,0XFC0,0XFE0,0XFC0,0XF00,0XC00,0X0,0X0,
  0X0,0X0,0X0,0X0,0X0,0X0,0X0,0X0,0X0,
  0X0,0X0,0X1C00,0X3FB0,0X3FB0,0X1C00,0X0,0X0,0X0,
  0X0,0X7000,0X7800,0X0,0X0,0X7800,0X7000,0X0,0X0,
  0X440,0X1FF0,0X1FF0,0X440,0X1FF0,0X1FF0,0X440,0X0,0X0,
  0X1C60,0X3E30,0X2210,0XE21C,0XE21C,0X33F0,0X19E0,0X0,0X0,
  0XC30,0XC60,0XC0,0X180,0X300,0X630,0XC30,0X0,0X0,
  0X1E0,0X1BF0,0X3E10,0X2710,0X3DE0,0X1BF0,0X210,0X0,0X0,
  0X0,0X800,0X7800,0X7000,0X0,0X0,0X0,0X0,0X0,
  0X0,0X0,0XFC0,0X1FE0,0X3030,0X2010,0X0,0X0,0X0,
  0X0,0X0,0X2010,0X3030,0X1FE0,0XFC0,0X0,0X0,0X0,
  0X100,0X540,0X7C0,0X380,0X380,0X7C0,0X540,0X100,0X0,
  0X0,0X100,0X100,0X7C0,0X7C0,0X100,0X100,0X0,0X0,
  0X0,0X0,0X8,0X78,0X70,0X0,0X0,0X0,0X0,
  0X100,0X100,0X100,0X100,0X100,0X100,0X100,0X0,0X0,
  0X0,0X0,0X0,0X30,0X30,0X0,0X0,0X0,0X0,
  0X30,0X60,0XC0,0X180,0X300,0X600,0XC00,0X0,0X0,
  0XFC0,0X1FE0,0X3030,0X2310,0X2310,0X3030,0X1FE0,0XFC0,0X0,
  0X0,0X810,0X1810,0X3FF0,0X3FF0,0X10,0X10,0X0,0X0,
  0X1070,0X30F0,0X2190,0X2310,0X2610,0X3C30,0X1830,0X0,0X0,
  0X1020,0X3030,0X2210,0X2210,0X2210,0X3FF0,0X1DE0,0X0,0X0,
  0X300,0X700,0XD00,0X1910,0X3FF0,0X3FF0,0X110,0X0,0X0,
  0X3E20,0X3E30,0X2210,0X2210,0X2210,0X23F0,0X21E0,0X0,0X0,
  0XFE0,0X1FF0,0X3210,0X2210,0X2210,0X3F0,0X1E0,0X0,0X0,
  0X3000,0X3000,0X20F0,0X21F0,0X2300,0X3E00,0X3C00,0X0,0X0,
  0X1DE0,0X3FF0,0X2210,0X2210,0X2210,0X3FF0,0X1DE0,0X0,0X0,
  0X1C00,0X3E10,0X2210,0X2210,0X2230,0X3FE0,0X1FC0,0X0,0X0,
  0X0,0X0,0X0,0XC60,0XC60,0X0,0X0,0X0,0X0,
  0X0,0X0,0X10,0XC70,0XC60,0X0,0X0,0X0,0X0,
  0X0,0X100,0X380,0X6C0,0XC60,0X1830,0X1010,0X0,0X0,
  0X0,0X480,0X480,0X480,0X480,0X480,0X480,0X0,0X0,
  0X0,0X1010,0X1830,0XC60,0X6C0,0X380,0X100,0X0,0X0,
  0X1800,0X3800,0X2000,0X23B0,0X27B0,0X3C00,0X1800,0X0,0X0,
  0XFE0,0X1FF0,0X1010,0X13D0,0X13D0,0X1FD0,0XF80,0X0,0X0,
  0X7F0,0XFF0,0X1900,0X3100,0X1900,0XFF0,0X7F0,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2210,0X2210,0X3FF0,0X1DE0,0X0,0X0,
  0XFC0,0X1FE0,0X3030,0X2010,0X2010,0X3030,0X1860,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2010,0X3030,0X1FE0,0XFC0,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2210,0X2710,0X3030,0X3870,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2210,0X2700,0X3000,0X3800,0X0,0X0,
  0XFC0,0X1FE0,0X3030,0X2110,0X2110,0X31E0,0X19F0,0X0,0X0,
  0X3FF0,0X3FF0,0X200,0X200,0X200,0X3FF0,0X3FF0,0X0,0X0,
  0X0,0X0,0X2010,0X3FF0,0X3FF0,0X2010,0X0,0X0,0X0,
  0XE0,0XF0,0X10,0X2010,0X3FF0,0X3FE0,0X2000,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X300,0X780,0X3CF0,0X3870,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2010,0X10,0X30,0X70,0X0,0X0,
  0X3FF0,0X3FF0,0X1C00,0XE00,0XE00,0X1C00,0X3FF0,0X3FF0,0X0,
  0X3FF0,0X3FF0,0X1C00,0XE00,0X700,0X3FF0,0X3FF0,0X0,0X0,
  0X1FE0,0X3FF0,0X2010,0X2010,0X2010,0X3FF0,0X1FE0,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2210,0X2200,0X3E00,0X1C00,0X0,0X0,
  0X1FE0,0X3FF0,0X2010,0X2070,0X203C,0X3FFC,0X1FE4,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X2200,0X2300,0X3FF0,0X1CF0,0X0,0X0,
  0X1860,0X3C70,0X2610,0X2210,0X2310,0X39F0,0X18E0,0X0,0X0,
  0X3800,0X3000,0X2010,0X3FF0,0X3FF0,0X2010,0X3000,0X3800,0X0,
  0X3FE0,0X3FF0,0X10,0X10,0X10,0X3FF0,0X3FE0,0X0,0X0,
  0X3F80,0X3FC0,0X60,0X30,0X30,0X60,0X3FC0,0X3F80,0X0,
  0X3FC0,0X3FF0,0X70,0X1C0,0X1C0,0X70,0X3FF0,0X3FC0,0X0,
  0X3030,0X3870,0XCC0,0X780,0X780,0XCC0,0X3870,0X3030,0X0,
  0X3800,0X3C00,0X610,0X3F0,0X3F0,0X610,0X3C00,0X3800,0X0,
  0X3870,0X30F0,0X2190,0X2310,0X2610,0X2C10,0X3830,0X3070,0X0,
  0X0,0X0,0X3FF0,0X3FF0,0X2010,0X2010,0X0,0X0,0X0,
  0X1C00,0XE00,0X700,0X380,0X1C0,0XE0,0X70,0X0,0X0,
  0X0,0X0,0X2010,0X2010,0X3FF0,0X3FF0,0X0,0X0,0X0,
  0X1000,0X3000,0X6000,0XC000,0X6000,0X3000,0X1000,0X0,0X0,
  0X4,0X4,0X4,0X4,0X4,0X4,0X4,0X4,0X0,
  0X0,0X0,0XC000,0XE000,0X2000,0X0,0X0,0X0,0X0,
  0XE0,0X5F0,0X510,0X510,0X7E0,0X3F0,0X10,0X0,0X0,
  0X2000,0X3FF0,0X3FF0,0X410,0X610,0X3F0,0X1E0,0X0,0X0,
  0X3E0,0X7F0,0X410,0X410,0X410,0X630,0X220,0X0,0X0,
  0X1E0,0X3F0,0X610,0X2410,0X3FE0,0X3FF0,0X10,0X0,0X0,
  0X3E0,0X7F0,0X510,0X510,0X510,0X730,0X320,0X0,0X0,
  0X210,0X1FF0,0X3FF0,0X2210,0X3000,0X1800,0X0,0X0,0X0,
  0X3E4,0X7F6,0X412,0X412,0X3FE,0X7FC,0X400,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X200,0X400,0X7F0,0X3F0,0X0,0X0,
  0X0,0X0,0X410,0X37F0,0X37F0,0X10,0X0,0X0,0X0,
  0X0,0XC,0XE,0X2,0X402,0X37FE,0X37FC,0X0,0X0,
  0X2010,0X3FF0,0X3FF0,0X180,0X3C0,0X670,0X430,0X0,0X0,
  0X0,0X0,0X2010,0X3FF0,0X3FF0,0X10,0X0,0X0,0X0,
  0X7F0,0X7F0,0X600,0X3F0,0X3F0,0X600,0X7F0,0X3F0,0X0,
  0X400,0X7F0,0X3F0,0X400,0X400,0X7F0,0X3F0,0X0,0X0,
  0X3E0,0X7F0,0X410,0X410,0X410,0X7F0,0X3E0,0X0,0X0,
  0X402,0X7FE,0X3FE,0X412,0X410,0X7F0,0X3E0,0X0,0X0,
  0X3E0,0X7F0,0X410,0X412,0X3FE,0X7FE,0X402,0X0,0X0,
  0X410,0X7F0,0X3F0,0X610,0X400,0X700,0X300,0X0,0X0,
  0X220,0X730,0X590,0X490,0X4D0,0X670,0X220,0X0,0X0,
  0X400,0X400,0X1FE0,0X3FF0,0X410,0X430,0X20,0X0,0X0,
  0X7E0,0X7F0,0X10,0X10,0X7E0,0X7F0,0X10,0X0,0X0,
  0X780,0X7C0,0X60,0X30,0X30,0X60,0X7C0,0X780,0X0,
  0X7E0,0X7F0,0X30,0XE0,0XE0,0X30,0X7F0,0X7E0,0X0,
  0X410,0X630,0X360,0X1C0,0X1C0,0X360,0X630,0X410,0X0,
  0X7E2,0X7F2,0X12,0X12,0X16,0X7FC,0X7F8,0X0,0X0,
  0X630,0X670,0X4D0,0X590,0X710,0X630,0X430,0X0,0X0,
  0X0,0X200,0X200,0X1FE0,0X3DF0,0X2010,0X2010,0X0,0X0,
  0X0,0X0,0X0,0X3DF0,0X3DF0,0X0,0X0,0X0,0X0,
  0X0,0X2010,0X2010,0X3DF0,0X1FE0,0X200,0X200,0X0,0X0,
  0X1000,0X3000,0X2000,0X3000,0X1000,0X3000,0X2000,0X0,0X0,
  0X1E0,0X3E0,0X620,0XC20,0X620,0X3E0,0X1E0,0X0,0X0,
  0XF80,0X1FC4,0X3064,0X2024,0X2034,0X307C,0X18C8,0X0,0X0,
  0X27E0,0X27F0,0X10,0X10,0X27E0,0X27F0,0X10,0X0,0X0,
  0X3E0,0X7F0,0X1510,0X3510,0X6510,0X4730,0X320,0X0,0X0,
  0XE0,0X15F0,0X3510,0X6510,0X37E0,0X13F0,0X10,0X0,0X0,
  0X20E0,0X25F0,0X510,0X510,0X27E0,0X23F0,0X10,0X0,0X0,
  0XE0,0X45F0,0X6510,0X3510,0X17E0,0X3F0,0X10,0X0,0X0,
  0XE0,0X25F0,0X7510,0X5510,0X77E0,0X23F0,0X10,0X0,0X0,
  0X0,0X780,0XFC8,0X848,0X868,0XCF8,0X490,0X0,0X0,
  0X3E0,0X17F0,0X3510,0X6510,0X3510,0X1730,0X320,0X0,0X0,
  0X23E0,0X27F0,0X510,0X510,0X510,0X2730,0X2320,0X0,0X0,
  0X3E0,0X47F0,0X6510,0X3510,0X1510,0X730,0X320,0X0,0X0,
  0X0,0X2000,0X2410,0X7F0,0X7F0,0X2010,0X2000,0X0,0X0,
  0X0,0X1000,0X3410,0X67F0,0X67F0,0X3010,0X1000,0X0,0X0,
  0X0,0X4000,0X6410,0X37F0,0X17F0,0X10,0X0,0X0,0X0,
  0X43F0,0X47F0,0XC80,0X1880,0XC80,0X47F0,0X43F0,0X0,0X0,
  0X3F0,0X47F0,0XEC80,0XA880,0XEC80,0X47F0,0X3F0,0X0,0X0,
  0X810,0X2FF0,0X6FF0,0XC910,0X8910,0XD30,0XC30,0X0,0X0,
  0X60,0X4F0,0X690,0X3F0,0X7E0,0X4B0,0X790,0X310,0X0,
  0XFF0,0X1FF0,0X3200,0X2200,0X3FF0,0X3FF0,0X2210,0X0,0X0,
  0X3E0,0X17F0,0X3410,0X6410,0X3410,0X17F0,0X3E0,0X0,0X0,
  0X23E0,0X27F0,0X410,0X410,0X410,0X27F0,0X23E0,0X0,0X0,
  0X3E0,0X47F0,0X6410,0X3410,0X1410,0X7F0,0X3E0,0X0,0X0,
  0X17E0,0X37F0,0X6010,0X6010,0X37E0,0X17F0,0X10,0X0,0X0,
  0X7E0,0X47F0,0X6010,0X3010,0X17E0,0X7F0,0X10,0X0,0X0,
  0X27E0,0X27F2,0X12,0X12,0X16,0X27FC,0X27F8,0X0,0X0,
  0X4FE0,0X5FF0,0X1010,0X1010,0X1010,0X5FF0,0X4FE0,0X0,0X0,
  0X5FE0,0X5FF0,0X10,0X10,0X10,0X5FF0,0X5FE0,0X0,0X0,
  0XF80,0X1FC0,0X1040,0X7070,0X7070,0X1040,0X18C0,0X880,0X0,
  0X430,0X3FF0,0X7FF0,0X4410,0X6010,0X3030,0X20,0X0,0X0,
  0X2280,0X3280,0X1A80,0XFF0,0XFF0,0X1A80,0X3280,0X2280,0X0,
  0X4010,0X7FF0,0X7FF0,0X4810,0X4900,0X7BE0,0X37F0,0X110,0X0,
  0X8,0X20C,0X204,0X3FFC,0X7FF8,0X4200,0X6200,0X2000,0X0,
  0XE0,0X15F0,0X3510,0X6510,0X47E0,0X3F0,0X10,0X0,0X0,
  0X0,0X0,0X1410,0X37F0,0X67F0,0X4010,0X0,0X0,0X0,
  0X3E0,0X17F0,0X3410,0X6410,0X4410,0X7F0,0X3E0,0X0,0X0,
  0X7E0,0X17F0,0X3010,0X6010,0X47E0,0X7F0,0X10,0X0,0X0,
  0X1400,0X37F0,0X23F0,0X3400,0X1400,0X37F0,0X23F0,0X0,0X0,
  0X5FF0,0XDFF0,0X8E00,0XC700,0X4380,0XDFF0,0X9FF0,0X0,0X0,
  0X0,0X3200,0X7A00,0X4A00,0X7A00,0X7A00,0XA00,0X0,0X0,
  0X0,0X3200,0X7A00,0X4A00,0X7A00,0X3200,0X0,0X0,0X0,
  0XE0,0X1F0,0X3710,0X3610,0X10,0X70,0X60,0X0,0X0,
  0X3E0,0X3E0,0X200,0X200,0X200,0X200,0X200,0X0,0X0,
  0X200,0X200,0X200,0X200,0X200,0X3E0,0X3E0,0X0,0X0,
  0X7C60,0X7CC0,0X180,0X324,0X66C,0XC5C,0X1874,0X24,0X0,
  0X7C60,0X7CC0,0X190,0X330,0X650,0XCFC,0X18FC,0X0,0X0,
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  0X100,0X380,0X6C0,0X540,0X380,0X6C0,0X440,0X0,0X0,
  0X440,0X6C0,0X380,0X540,0X6C0,0X380,0X100,0X0,0X0,
  0X0,0X5555,0X0,0XAAAA,0X0,0X5555,0X0,0XAAAA,0XAAAA,
  0X5555,0XAAAA,0X5555,0XAAAA,0X5555,0XAAAA,0X5555,0XAAAA,0XAAAA,
  0XAAAA,0XFFFF,0X5555,0XFFFF,0XAAAA,0XFFFF,0X5555,0XFFFF,0XFFFF,
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  0X100,0X100,0X100,0XFFFF,0XFFFF,0X0,0X0,0X0,0X0,
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  0X0,0X0,0XFFFF,0XFFFF,0X0,0XFFFF,0XFFFF,0X0,0X0,
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  0X100,0X100,0X100,0XFF00,0XFF00,0X100,0X100,0X100,0X100,
  0X100,0X100,0X100,0X1FF,0X1FF,0X100,0X100,0X100,0X100,
  0X0,0X0,0X0,0XFFFF,0XFFFF,0X100,0X100,0X100,0X100,
  0X100,0X100,0X100,0X100,0X100,0X100,0X100,0X100,0X100,
  0X100,0X100,0X100,0XFFFF,0XFFFF,0X100,0X100,0X100,0X100,
  0X0,0X0,0X0,0XFFFF,0XFFFF,0X500,0X500,0X500,0X500,
  0X0,0X0,0XFFFF,0XFFFF,0X0,0XFFFF,0XFFFF,0X100,0X100,
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  0X500,0X500,0X500,0X500,0X500,0X500,0X500,0X500,0X500,
  0X500,0X500,0XFDFF,0XFDFF,0X0,0XFDFF,0XFDFF,0X500,0X500,
  0X500,0X500,0X500,0XFD00,0XFD00,0X500,0X500,0X500,0X500,
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  0X0,0X0,0X0,0XFF00,0XFF00,0X500,0X500,0X500,0X500,
  0X0,0X0,0X0,0X7FF,0X7FF,0X500,0X500,0X500,0X500,
  0X0,0X0,0X1FF,0X1FF,0X100,0X1FF,0X1FF,0X100,0X100,
  0X100,0X100,0XFFFF,0XFFFF,0X100,0XFFFF,0XFFFF,0X100,0X100,
  0X500,0X500,0X500,0XFFFF,0XFFFF,0X500,0X500,0X500,0X500,
  0X100,0X100,0X100,0XFF00,0XFF00,0X0,0X0,0X0,0X0,
  0X0,0X0,0X0,0X1FF,0X1FF,0X100,0X100,0X100,0X100,
  0XFFFF,0XFFFF,0XFFFF,0XFFFF,0XFFFF,0XFFFF,0XFFFF,0XFFFF,0XFFFF,
  0X1FF,0X1FF,0X1FF,0X1FF,0X1FF,0X1FF,0X1FF,0X1FF,0X1FF,
  0XFFFF,0XFFFF,0XFFFF,0XFFFF,0X0,0X0,0X0,0X0,0X0,
  0X0,0X0,0X0,0X0,0XFFFF,0XFFFF,0XFFFF,0XFFFF,0XFFFF,
  0XFE00,0XFE00,0XFE00,0XFE00,0XFE00,0XFE00,0XFE00,0XFE00,0XFE00,
  0X3E0,0X7F0,0X410,0X7F0,0X3E0,0X630,0X410,0X0,0X0,
  0X1FF0,0X3FF0,0X2000,0X2200,0X3F10,0X1DF0,0XE0,0X0,0X0,
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  0X0,0X1390,0X17D0,0X1C70,0X1C70,0X17D0,0X1390,0X0,0X0,
  0X7C0,0XFE0,0X1930,0X1110,0X1930,0XFE0,0X7C0,0X0,0X0,
  0XE10,0X1FF0,0X31F0,0X2000,0X31F0,0X1FF0,0XE10,0X0,0X0,
  0X0,0X1E0,0X13F0,0X3A10,0X2E10,0X27F0,0X23E0,0X0,0X0,
  0X380,0X7C0,0X440,0X7C0,0X7C0,0X440,0X7C0,0X380,0X0,
  0X390,0X7F0,0X4E0,0X7C0,0X740,0XC40,0X1FC0,0X1380,0X0,
  0X0,0XFC0,0X1FE0,0X3230,0X2210,0X2210,0X0,0X0,0X0,
  0XFF0,0X1FF0,0X1000,0X1000,0X1000,0X1FF0,0XFF0,0X0,0X0,
  0X920,0X920,0X920,0X920,0X920,0X920,0X920,0X0,0X0,
  0X10,0X210,0X210,0XF90,0XF90,0X210,0X210,0X10,0X0,
  0X0,0X10,0X1050,0X18D0,0XD90,0X710,0X210,0X0,0X0,
  0X0,0X210,0X710,0XD90,0X18D0,0X1050,0X10,0X0,0X0,
  0X0,0X0,0X0,0X1FFF,0X3FFF,0X2000,0X3800,0X1800,0X0,
  0XE0,0XF0,0X10,0XFFF0,0XFFE0,0X0,0X0,0X0,0X0,
  0X0,0X100,0X100,0XD60,0XD60,0X100,0X100,0X0,0X0,
  0X240,0X6C0,0X480,0X6C0,0X240,0X6C0,0X480,0X0,0X0,
  0X0,0X3000,0X7800,0X4800,0X7800,0X3000,0X0,0X0,0X0,
  0X0,0X0,0X0,0X180,0X180,0X0,0X0,0X0,0X0,
  0X0,0X0,0X0,0X80,0X80,0X0,0X0,0X0,0X0,
  0X100,0X1C0,0X1E0,0X30,0X7FF0,0X7FF0,0X4000,0X4000,0X0,
  0X4000,0X7E00,0X3E00,0X4000,0X7E00,0X3E00,0X0,0X0,0X0,
  0X2600,0X6E00,0X5A00,0X7200,0X2600,0X0,0X0,0X0,0X0,
  0X0,0XFE0,0XFE0,0XFE0,0XFE0,0XFE0,0X0,0X0,0X0,
  0X0,0X0,0X0,0X0,0X0,0X0,0X0,0X0,0X0 };

void onechar (int c)
{ unsigned int x,y,a,b,i[10][20];

  for(x=0;x<9;x++)
  { a=font0[c*9+x]; b=32768;
    for(y=0;y<16;y++)
    { if ((a/b)==1) i[x][y]=1; else i[x][y]=0;
      a=a%b; b=b/2; 
    } 
  }
  printf("Ascii char code %d \n\n",c); 
  for(y=0;y<16;y++)
  { printf("  ");
    for(x=0;x<9;x++) 
    { if (i[x][y]==1) printf("#"); else printf("-"); }
    printf("\n");
  }
  printf("\n");
}

int main(int argc, char *argv[])
{ int a,c;
  a=0;
  do 
  { onechar(a); a++;
    printf("[enter] for continue [e] for exit \n");
    c=getc(stdin); 
  }
  while ((char)c!='e' AND (char)c!='q' AND (a<256));
  return 0;
}

A che serve ? In tutti quei casi dove lo schermo viene indirizzato pixel per pixel come i vari display a matrice lcd oppure ai programmi che accedono direttamente ai registri della scheda video.