Now, let us try to address video RAM which is just like any other RAM. We know that the
starting address of video memory for CGA display is B800:0000. We will attempt to display
our data without using BIOS, rather, we write data directly into video RAM which causes dis-
playing of that information. Let us try to make the whole of page 0 display appear green. For
this a 16-bit number with the attribute byte and ASCII character is loaded in AX. is word
is written into the 2000 locations (25 × 80 characters) starting from the address B800H. Using
string instructions, this display ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.