Int 10 Fn 1129  - Video - Graph-mode Chargen - Set User Graphics Characte  [V]

   AX = 1129h
   DI:BP -> user table
   CX = bytes per character
   BL = row specifier
       00h user set
       DL = number of rows
       01h 14 rows
       02h 25 rows
       03h 43 rows

Return: AL = new number of rows

Notes: this function is meant to be called immediately after a mode set;
     results are unpredictable at other times
   supported by Diamond Stealth64 Video

See Also: AX=1120h,AX=1122h,AX=1123h,AX=1124h,INT 1F"SYSTEM",INT 43"VIDEO"