The X 86 Microprocessors: Architecture, Programming and Interfacing (8086 to Pentium) 2nd Edition by Pearson

THE INTERRUPT STRUCTURE OF 8086 8-25

v) The LODSB and STOSW instructions are executed until CX = 0. Recollect that

for using the LODSB instruction, the message should be in the data segment and

should be pointed by SI. Here, the data segment is the same as the code segment as

we are using the tiny model.

vi) Thus, we find the string HELLO WORLD displayed on a green screen.

8.9 | Keyboard Interfacing

Next, let us use BIOS interrupts for the computer keyboard. For that, we first have

to understand the computer keyboard as well as the hardware associated with the

keyboard.

8.9.1 | Computer Keyboard

All of us are familiar with the PC keyboard, which is more or less standard. However,

the keyboard, which is one of the most important (but taken for ...