Specifications

D:\D\inter61a\INTERRUP.A Saturday, January 08, 2011 11:31 AM
provides text output in graphics mode and some graphics primitives
on the Hercules Graphics Card
Desc: switch the Hercules Graphics Card into graphics mode (720x348) without
clearing the screen; make Page 0 the default for both writing and
display, and set LEVEL (see AH=44h) to 01h
SeeAlso: AH=00h,AH=41h,AH=42h
Index: video modes;Hercules
--------V-1041-------------------------------
INT 10 - VIDEO - Hercules GRAFIX - "TMODE" - SET TEXT MODE
AH = 41h
Return: nothing
Desc: switch the Hercules Graphics Card into text mode
SeeAlso: AH=00h,AH=40h
Index: video modes;Hercules
--------V-1042-------------------------------
INT 10 - VIDEO - Hercules GRAFIX - "CLRSCR" - CLEAR CURRENT PAGE
AH = 42h
Return: nothing
SeeAlso: AH=45h
--------V-1043-------------------------------
INT 10 - VIDEO - Hercules GRAFIX - "GPAGE" - SELECT DRAWING PAGE
AH = 43h
AL = page number (0,1)
Return: nothing
Desc: specify which of the two pages of video memory is to be used for
output
SeeAlso: AH=05h,AH=44h,AH=45h
--------V-1044-------------------------------
INT 10 - VIDEO - Hercules GRAFIX - "LEVEL" - SELECT DRAWING FUNCTION
AH = 44h
AL = drawing function
00h clear pixels
01h set pixels
02h invert pixels
Return: nothing
Desc: specify how graphics output will change the display
SeeAlso: AH=40h,AH=45h,AH=46h,AH=4Bh,AH=4Ch,AH=4Dh
--------V-1045-------------------------------
INT 10 - VIDEO - Hercules GRAFIX - "DISP" - SELECT PAGE TO DISPLAY
AH = 45h
AL = page number (0,1)
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