Compatibility: EGA VGA
Expects: AX    1130H
BH    request code: 00H = get addr at INT 1fH vector
01H = get addr at INT 43H vector
02H = get addr of ROM 8x14 font
03H = get addr of ROM 8x8 font
04H = get addr of ROM 8x8 font (2nd half)
05H = get addr of ROM 9x14 alternate font
(VGA)  06H = get addr of ROM 8x16 font
(VGA)  07H = get addr of ROM 8x16 alternate font
                                                                  
Returns: CX    height (scan-lines) / bytes per character (from 0040:0085)
DL    screen rows (from 0040:0084)
ES:BP address of requested font-definition table
                                                                  
Info: This provides a means to locate ROM-defined character-definition
tables.

A typical use would be to copy the table data, make some custom
modifications, then modify the EGA/VGA Data Areas to point to you
changed table, and then use TSR function to make the changes
permanent.

The tables are always CX*256 bytes long.

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INT 10H 1130H: Get Current Character Generator Info