Add documentation.

src/main.asm

@@ -54,15 +54,10 @@ coldstart SUBROUTINE
 
     jsr clear_color_ram
 
-pm:
+    ; print informative message for user
     lda #<message
     ldy #>message
-    jsr $cb1e
-
-    ; jmp .
-
-    ; lda #0
-    ; jsr $c871
+    jsr $cb1e       ; print null terminated string
 
     jmp $c483 ; BASIC
 
@@ -144,7 +139,7 @@ copyloop:
     inc count + 1
 .noinc3:
 
-    ; LENGTH
+    ; lenght of program to copy
     lda count
     cmp #$00
     bne copyloop
@@ -156,15 +151,6 @@ copyloop:
 .finito:
     rts
 
-;    lda srcPointer
-;    cmp #<demoend
-;    bne copyloop
-;    lda srcPointer + 1
-;    cmp #>demoend
-;.remainder:
-;    bne copyloop
-;    rts
-
 message:
     BYTE #$0d,#$0d,"TYPE 'RUN'",#$0d,"THEN WAIT 20 SEC",#$0d,#$0d,#0