One field of the EgaSavePtrRec points to an EgaVidParmsRec.  This
structure is initialized by the video system BIOS.

EgaVidParmsRec
Offset Size Contents
                                                                          
+0      1  bCrtClms     screen columns (e.g., 80)
+1      1  bCrtRows     screen rows (e.g., 25)
+2      1  bCrtPoints   height of character matrix (e.g., 14 or 8)
+3      2  wCrtLen      size of video buffer, in bytes (e.g., 2000)
+5      4  abSeqRegs    values for Sequencer regs 1-4         (port 3c5H)
+9      1  bMiscOutReg  value of Miscellanous Output reg      (port 32cH)
+0aH    25  abCrtcRegs   values for CRTC regs 00-18H           (port 3d5H)
+23H    20  abAttrRegs   values for Attrib Ctrlr regs 00-13H   (port 3c0H)
+37H     9  abGfxRegs    values for Graphics Ctrlr regs 0-8    (port 3cfH)
64               size of an EgaVidParmsRec

See Also: EGA Data Areas
- -

EgaVidParmsRec