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→Without using the ROM routines
=== Without using the ROM routines ===
define SCREEN $f000 ; location of screen memory ldy #$00 ; index value (character we're currently processing)
char: lda text,y ; get a character from address (text + Y) beq done ; if the character is NULL, branch to done sta SCREEN,y ; store character at (SCREEN + Y) iny ; increment Y (go to next character) bne char ; repeat loop
done: brk ; when we're done, break (stop the program)
text: ; this is the text message
dcb "6","5","0","2",32,"w","a","s",32,"h","e","r","e",".",00
