CS-401 Computer Architecture & Assembly Language Programming Lecture-16 Display Memory.

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Presentation transcript:

CS-401 Computer Architecture & Assembly Language Programming Lecture-16 Display Memory

Lets Revise the Last Lecture

Character Mode

ASCII Table

String Declaration db0x61, 0x62,... db‘a’, ‘b’,... db‘abcdef’

Video Device Function in Computer

Character Formation

BGRIBGR blink ASCII CODE Attributes Back Ground Fore Ground

Character Formation BGRIBGR blink Attributes Back Ground Fore Ground R = Red G = Green B = Blue I = Intensity Bl = Blinking

Accecing Video Memory Mov ax, 0*b800 Mov ex, ax Mov word [es:0], 0*0741 ; print A at the top left in ;White on the Black bg Move word [es:160], 0*1230 ;print 0 at second line ;Left in green on blue bg