Alfabeto (.ALF)

  This is the font file for Graphos III, composed by the MSX file header and the MSX 0/1 character table.

  MSX Header:

Offset (hexa)	Size (bytes)	Description
0	1	MSX file type
1	2	Initial address
3	2	Final address
5	2	Execution address

  Character table:

Offset (hexa)	Size (bytes)	Description
0007	8	Character index 0 pattern
000F	8	Character index 1 pattern
...	...	...
07FF	8	Character index 255 pattern

  Each character is defined by an 8x8 block, where each line is represented by a byte. For example, the letter "A" is located at the file offset x:

Offset	Value
x	&B00100000
x+1	&B01010000
x+2	&B10001000
x+3	&B10001000
x+4	&B11111000
x+5	&B10001000
x+6	&B10001000
x+7	&B00000000

  Use this formula to calculate the offset of a character with index i:

  x = 7 + i*8

  The file offset for the character "A", which ASCII code is 65, is calculated as follows:

 PRINT 7 + 65*8
 527
 Ok