coding

Displaying "Hello World" to the top of the screen... there are several ways to do this... In this example the CALL 8252 routine is used to display each character of our string.  The routine also starts to deduct the value of BC register pairs, and completed when BC register pair equal to 0.  Therefore we must load the BC register pair also with the length of our string before the routine starts . org 33000         ;Load our code starting memory address 33000. main                ;Declare MAIN section of code (good habit). ld a, 2           ;Load Accumulator with 2. call 5633        ;O pen channel 2 (top part of screen). ld DE, string    ;load DE register pair with string values. ld BC, 11        ;Load BC (Bit-Counter) with 11. call 8252        ;Routine displays each character,...