One field of the EgaSavePtrRec points to an EgaTxtFontRec. Initially,
this structure does not exist, but it may be installed by DOS national
language support or other TSR code.
Offset Size Contents
ßßßßßß ßßßß ßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßßß
+0 1 bLenOneChar size, in bytes, of one character definition
+1 1 bRamBank character generator RAM bank
+2 2 wCharCnt number of characters defined
+4 2 wFirstChar ASCII code of first character defined
+6 4 pfabDefTbl far address of the Font Definition Data table.
The table is a set of wCharCnt bitmaps, each
containing bLenOneChar bytes (usually 8 or 14).
See INT 1FH for related info.
+0aH 1 bAplcblRows applies when video mode has this many text lines
+0bH n abModes use for these video modes (variable-length table)
+n+0bH 1 ffH ffH indicates end of abModes table
n+0cH size of an EgaTxtFontRec
On VGA systems, a second 256-character font may be setup by initializing
the EgaSavePtrRec.pfSavePtr2 to a VgaSavePtr2Rec and setting its
pfTxtAuxFont field to point to another EgaTxtFontRec structure. This
secondary character set would be activated according to the mode values
in the abModes field.
See Also: Font Definition Data
EGA Data Areas
EGA I/O Ports